WO2022226565A1

WO2022226565A1 - Chain cutter device with stop elements for milling a pocket-shaped recess in a workpiece

Info

Publication number: WO2022226565A1
Application number: PCT/AT2022/060138
Authority: WO
Inventors: Thomas Nagel; Horst Zimmermann
Original assignee: Julius Blum Gmbh
Priority date: 2021-04-29
Filing date: 2022-04-26
Publication date: 2022-11-03
Also published as: DE112022002354A5; CN117203029A; AT525009B1; AT525009A1

Abstract

The invention relates to a chain cutter device (27) for cutting a pocket-shaped recess (44) in a workpiece (29), preferably a recess (44) starting from an end face (48) of a furniture panel (47) and in the plane of the furniture panel (47), comprising: a support device (30) for holding the workpiece (29); a fixing device (7) for fixing the workpiece (29) to the support device (30), at least one milling unit (33) comprising a cutting chain (19) and a chain guide (20); a guide device (34), the at least one milling unit (33) being movable, in an at least partially guided manner, relative to the support device (30) by means of the guide device (34); and a drive unit (23) for driving the at least one milling unit (33), the support device (30) comprising at least one carrier element (2), at least one stop element (3) and at least one support surface (51) for holding the workpiece (49), the at least one stop element (3) being mounted on the carrier element (2) such that it can pivot about an axis of rotation (D), the at least one stop element (3), in a first pivot position (49), projecting beyond the at least one support surface (51) on the workpiece side and the at least one stop element (3), in a second pivot position (50), being arranged entirely under the at least one support surface (51).

Description

Chain milling device with stop elements for milling a pocket-shaped recess in a workpiece

The invention relates to a chain milling device for milling a pocket-shaped recess in a workpiece, preferably a recess starting from an end face of a furniture panel and in the plane of the furniture panel, comprising a support device for placing the workpiece, a fixing device for fixing the workpiece on the support device, at least one Milling unit comprising a milling chain and a chain guide, a guide device, wherein the at least one milling unit can be moved relative to the support device by means of the guide device, at least partially guided, and a drive unit for driving the at least one milling unit. The invention also relates to a method for milling a pocket-shaped recess in a workpiece, preferably a recess starting from an end face of a furniture panel and in the plane of the furniture panel, with a chain milling device and a method for producing a furniture part with a furniture fitting.

WO 2020/232484 A1 shows a furniture drive for moving furniture flaps, the housing of the furniture drive being designed to be accommodated in a mounted state within a recess in a furniture panel. The recess is designed in the form of a blind hole, with the housing of the furniture drive being accommodated completely within the blind hole and completely within a material thickness of the furniture panel in an assembled state. In this way, a compact arrangement of the furniture drive is possible, with the space available inside the furniture body not being restricted. Since the furniture drive is hardly noticeable in an assembled state, an overall visual impression can also be improved. For example, a visually appealing, uniform and intact surface finish of the furniture board can be made possible on the inside and outside.

However, the efficient and cost-effective production of the recess in the furniture board is associated with a number of challenges.

The object of the invention is to simplify the production of a pocket-shaped recess in a workpiece, preferably a recess starting from an end face of a furniture panel and in the plane of the furniture panel. In particular, the workpiece should be easier to position.

The object is achieved by the chain milling device from claim 1, the method for milling a pocket-shaped recess according to claim 18 and the method for manufacturing a furniture part according to claim 21.

In a chain milling device according to the invention, the support device comprises at least one support element, at least one stop element and at least one support surface for placing the workpiece, the at least one stop element being pivotably mounted on the support element about an axis of rotation. In this case, the at least one stop element protrudes in a first pivoting position beyond the at least one bearing surface on the workpiece side and can be arranged completely under the at least one bearing surface in a second pivoting position.

Because the at least one stop element is mounted on the support element such that it can pivot about an axis of rotation, the at least one stop element can assume a number of pivot positions depending on the desired function. The workpiece can be placed against a stop element in the first pivot position, with which the position of the pocket-shaped recess to be milled is defined relative to the point at which the workpiece is placed, in particular a stop face. This makes it easier to position the workpiece.

Constant system dimensions are often provided if a furniture fitting is always to be arranged in the same position, for example 21 mm away from the top edge of a furniture panel. With the chain milling device according to the invention, a large number of workpieces with recesses can be produced efficiently and inexpensively at the same position.

A stop element in the second pivoting position, on the other hand, does not prevent a workpiece from being freely positioned on the support surface. The function of a stop element can thus be deactivated. This increases flexibility when positioning the recess in the workpiece. In particular, when several stop elements are used, only one stop element can actually serve as a stop element in the first pivoted position, while the others are deactivated in the second pivoted position.

In a preferred exemplary embodiment of the chain milling device, the at least one stop element can be held in the first pivoted position by a spring element, preferably a torsion spring, and can be pressed into the second pivoted position, in particular by a workpiece. The at least one stop element thus rests in the first pivot position without the action of force. If, for example, the workpiece is placed or pushed onto the at least one stop element, the stop element can be pressed into the second pivot position by the weight of the workpiece. It is preferably provided that the spring element can be supported on at least one stop element, particularly preferably on a screw, and the support element. The at least one stop element is thus pressed upwards by the support element by the spring element.

Provision can also be made for the at least one stop element to have a pin, with the pin bearing against the support element in the first pivoting position. In this way, a stop part pressed upwards by the support element by the spring element strikes with the pin on the support element, as a result of which a stable rest position, the first pivoting position, is assumed.

In a particularly preferred exemplary embodiment, the at least one stop element has a longitudinal direction, with the longitudinal direction being arranged parallel to the bearing surface and orthogonally to the axis of rotation.

The axis of rotation is preferably arranged in the area of a first narrow side of the at least one stop element. A second narrow side of a stop element can thus be lifted up and pressed down during pivoting.

Provision can be made for the at least one stop element to have a base body, with the at least one stop element being mounted on the support element via the base body so that it can pivot about an axis of rotation.

The upper side of the base body can be aligned parallel to the support surface in the second pivoted position. In the second swivel position, the upper side then acts like an extension of the support surface and does not form any obstacle for a workpiece placed on it. In particular, the upper side of the base body can be arranged in the first pivoting position on a first narrow side of the base body in the plane of the bearing surface and on a second narrow side of the base body above the plane of the bearing surface. The upper side of the base body thus forms an inclined surface in relation to the bearing surface in the first pivoting position, which does not protrude beyond the bearing surface on the first narrow side of the base body. A work piece can thus be pushed from the first narrow side over the at least one support element, whereby it is preferably pressed down into the second swivel position, so that the second narrow side does not protrude beyond the support surface either.

In one embodiment, the at least one stop element has at least one end part, the at least one end part protruding beyond the base body on a second narrow side of the base body and the at least one end part having a stop surface facing away from the base body, on which the workpiece can be placed. Due to the fact that the end part is arranged on the second narrow side opposite the axis of rotation, the end part can be pivoted with the stop element from a first pivot position into a second pivot position.

Provision can be made for the stop surface to be aligned orthogonally to the support surface in the first pivoting position. The bearing surface thus lies flat against the workpiece if, as is the case with standard plates, the end face from which the recess protrudes into the workpiece and the stop end face form a right angle.

Provision can furthermore be made for the position of the at least one end part to be adjustable relative to the base body, particularly preferably via a threaded screw. This allows the position of Recess can be adjusted relative to the stop face of the workpiece.

The minimum distance between the stop surface and the milling chain during the at least partially guided movement of the milling unit is preferably between 15 mm and 30 mm, particularly preferably 21 mm.

The at least one end part can consist of an elastic material, for example hard rubber. This means that the adjacent workpiece is not damaged.

At least one first stop element and at least one second stop element can be provided, with both stop elements being arranged along an imaginary line along the longitudinal direction of both stop elements. In this way, a workpiece can be brought to a stop at two points in the longitudinal direction, preferably optionally.

It can preferably be provided that the second narrow sides of the base bodies of the two stop elements are directed towards one another. A workpiece can thus be brought into abutment from two sides, preferably optionally.

Provision can be made for the at least one milling unit to be movable, at least partially guided, by means of the guide device between the at least one first stop element and the at least one second stop element, preferably with the distance being greater than the width of the guide device, preferably with the distance between 100 mm and 140 mm, preferably 125 mm. A workpiece can thus be placed against the first stop element or the second stop element in order to mill the recess. Depending on which stop element is applied, the position of the recess can have other properties.

If the distance between the two stop elements in relation to the milling chain is different, two different standard dimensions can be set.

If the guide device is set in such a way that the milling chain cuts into the workpiece in a decentralized manner with regard to the transverse direction, the direction orthogonal to the longitudinal direction, and typically with regard to the thickness of a furniture panel, the side of the decentralized recess can be selected by selecting one of the two stops.

In one exemplary embodiment, it can be provided that at least one side part can be fastened to the side of the support element, with the side part protruding from the support element over the bearing surface. With the side part, the workpiece can be secured against falling when placed on the support surface.

Provision can be made for the support device to have a splinter guard, in which case the workpiece can be placed directly and flatly on the splinter guard and the surface of the splinter guard forms the bearing surface, and the at least one milling unit is at least partially guided by means of the guide device, through at least one contact area of the The splinter guard is movable, and wherein the splinter guard consists of a material that can be milled by the at least one milling unit, at least in the contact area.

The splinter protection is also milled during the first milling process. During further milling processes, the splinter protection forms a line exactly to the Opening adapted to the size of the milling unit. This prevents the edges of the recess in the workpiece from splintering and fraying during the first milling process and during further milling processes.

The splinter guard can have at least one, preferably two, countersink openings outside the at least one contact area, with at least one stop element being arranged in the at least one countersink opening, preferably with at least one stop element protruding out of the countersink opening on the workpiece side in the first pivoted position and in the second pivoted position in the Countersunk opening is sunk. The stop elements can thus be integrated into the splinter guard.

The splinter guard can be detachably fastened to the support element, preferably by means of fastening means, particularly preferably by means of self-tapping screws. This means that the splinter guard can be replaced after a certain number of milling operations.

In one exemplary embodiment, the support element has a passage, with the splinter guard being accessible through the passage for the at least one milling unit, preferably with the passage having a length of between 100 mm and 130 mm, preferably 120 mm. The milling unit can thus be moved into the workpiece through the support element and through the splinter guard.

The support device comprises a first support unit, which preferably has a support surface that is slightly inclined from the horizontal, and a second support unit, which preferably has a leaning surface that is slightly inclined from the vertical. So that the workpiece can be placed on the support surface and on the Leaning surface are leaned against, so that the workpiece is already arranged approximately in the desired position.

It can be provided that the first support unit and the second support unit are flat, in particular plate-shaped or strip-shaped, and form a right angle to one another. A cuboid workpiece, for example a piece of furniture, can thus be placed on two side faces of the support device.

Furthermore, it can be provided that the at least one stop element and the bearing surface are provided on the first bearing unit. With this, the position of the workpiece in the longitudinal direction can be precisely adjusted.

Provision can be made for the second support unit to have a stationary back plate and an adjustable adjustment plate, preferably with the adjustment plate being adjustable in parallel with respect to the back plate. With this, the position of the workpiece in the transverse direction can be precisely adjusted. The adjustment plate has the leaning surface here.

In one exemplary embodiment, the fixing device has a lever mechanism, with at least one fixing element being adjustable by means of the lever mechanism. A workpiece can be fixed to the support device with the at least one fixing element.

It can preferably be provided that a first fixing element can be adjusted by the lever mechanism in a first direction, while a second fixing element can be adjusted by the lever mechanism in a second direction, preferably orthogonal to the first direction, with the lever mechanism particularly preferably being actuatable by an actuating lever. This allows the workpiece to be fixed in two directions with one lever operation.

It can also be provided that the first fixing element can be adjusted in the direction of the first support unit and thus a workpiece can be pressed against the first support unit and/or the second fixing element can be adjusted in the direction of the second support unit and thus a workpiece can be pressed against the second support unit is pressable. This allows the workpiece to be fixed to both support units.

In one exemplary embodiment, the guiding device can comprise a fastening element and a movement element, the position of the movement element being adjustable in relation to the fastening element. An at least partially guided relative movement of the two parts can thus be implemented.

It is preferably provided that the fastening element can be fastened to the support device. In addition or as an alternative, it can preferably be provided that the at least one milling unit can be fastened to the moving element. In this way, the milling unit can be moved, at least partially guided, relative to the support device, with which guided milling of a pocket-shaped recess can be implemented.

In one embodiment it can be provided that the chain guide is flat, in particular sword-shaped, and the milling chain can be guided on the outer edge of the chain guide. The milling unit is thus designed in a manner similar to that of a chain saw.

Provision can preferably be made for at least two deflection rollers to be arranged on a milling side of the chain guide, preferably with the position of at least one of the deflection rollers is adjustable. This allows the width of the milling side of the chain guide, and thus of the milling unit, to be adjusted. The dimension of the recess in the workpiece can thus be adjusted, in particular a change in dimension caused by wear can be counteracted.

The milling side of the chain guide can have a curved shape. In particular, the shape can be asymmetrical. This makes it easier to enter the workpiece.

The chain guide can be connected to the drive unit on a fastening side. There the milling chain is driven by the drive unit.

The chain teeth of adjacent chain links can be staggered. It is intended that the chain teeth protrude beyond the chain, which allows milling.

Provision can be made for the milling chain to be pretensioned automatically by means of a chain tensioning eccentric. This automatically counteracts a greater expansion of the chain due to the heating caused by the milling process.

Provision can be made for the movement element to be able to be connected to the fastening element via at least one guide rod, with the movement element and/or the fastening element being able to move on the at least one guide rod, preferably linearly, with the longitudinal direction of the guide rod particularly preferably being aligned orthogonally to the support surface . In this way, among other things, a chain milling device can be created for milling a pocket-shaped recess starting from an end face of a furniture panel and in the plane of the furniture panel. A pneumatic and/or hydraulic drive comprising a piston-cylinder unit can be provided for adjusting the relative position of the moving element and the fastening element. The force can preferably be transmitted from the fastening element to the moving element by a lifting rod. This allows the relative position to be changed accurately and continuously.

The drive device can include a motor, preferably an electric motor, with the milling chain being drivable by means of the motor. The drive device is preferably arranged on the guide device. Provision can therefore be made for the drive device to be movable together with the milling unit on the guide device. As a result, the milling unit can be driven directly by the drive device, in particular no drive shafts or gears are then necessary.

In one embodiment, the at least one milling unit can be covered and/or enclosed by a suction device. This means that dust and milled material cannot be released into the environment.

In addition, the suction device has a suction hose, with dust, milled material and heated air being able to be suctioned off via the suction hose. Milled material can thus be directed into a container provided for this purpose. In addition, the extraction of heated air cools the milling unit.

The suction device preferably has a first suction cover and a second suction cover, the first suction cover and the second suction cover being telescopically movable into one another. In this way it can be realized that the milling unit can be separated from the suction device in different preferably all positions of the milling unit made possible by the guide device relative to the support device can be covered and/or enclosed.

The first suction cover can have a viewing window, with part of the milling unit and/or the drive device being visible through the viewing window. For example, the pretension of the milling chain can be read and monitored.

In a method according to the invention for milling a pocket-shaped recess with a chain milling device, the following method steps are provided: the workpiece, preferably a furniture board with one of its end faces, is placed on the support surface, the workpiece, preferably with a stop end face, is brought into contact with at least a stop element in the first swivel position, the workpiece is fixed to the support device with the fixing device, the at least one milling unit is driven by the drive unit, a part of the at least one milling unit is at least partially guided by means of the guide device, milling through the Workpiece moves, preferably wherein a part of the at least one milling unit enters a workpiece shaped as a furniture board via an end face of the workpiece.

The use of at least one stop element defines the position of the recess in the workpiece relative to the stop point of the workpiece, in particular the distance of the recess from a stop face. An exemplary embodiment of the method just mentioned has the following method steps: the workpiece is placed on the support surface beyond the at least one stop element, the workpiece is pushed along the support surface over the at least one stop element, so that the at least one stop element moves into the second pivot position is pressed.

The upper side of the base body of the at least one stop element is preferably arranged diagonally opposite the support surface in the first pivot position and is pressed into the second pivot position by the weight of the workpiece, the upper side of the base body of the at least one stop element then being arranged parallel to the support surface, in particular in the supporting surface.

In a further exemplary embodiment, at least one first stop element and at least one second stop element are provided, with the following method steps being provided: the workpiece is placed on the support surface, with the second stop element being pressed into the second pivot position by the weight of the workpiece, the Workpiece brought into attack with the at least one first stop element in the first pivot position.

In particular, the workpiece can be pushed along the support surface over the at least one second stop element, the workpiece being brought into contact with the first stop element in the same sliding movement. Conversely, the following method steps can also be provided: the workpiece is placed on the support surface, with the first stop element being pressed into the second pivot position by the weight of the workpiece, the workpiece is brought into abutment with the at least one second stop element in the first pivot position .

In a method according to the invention for producing a furniture part with a furniture fitting, the following method steps are provided: according to the method for milling a pocket-shaped recess, a recess is milled in a workpiece shaped as a furniture panel, preferably in an end face of the furniture panel, the furniture fitting is cut into the Recess introduced, the furniture fitting is fixed in the recess.

Due to the simplified positioning of the workpiece, among other things, a furniture part with a furniture fitting countersunk in the furniture panel can be produced efficiently and cost-effectively.

A piece of furniture can, for example, have a furniture body comprising two side walls, with a recess for a furniture fitting being created near the top or bottom of both side walls, preferably at a distance of about 21 mm from the top or bottom of both side walls.

Such fixed system dimensions are particularly common in mass production. A large number of furniture parts can therefore be produced inexpensively. It is typically provided that the recess in the end faces of the two side walls of the furniture body is arranged centrally with respect to the thickness of the side walls.

It is therefore typically provided that part of the at least one milling unit is moved, at least partially guided, through the workpiece by means of the guide device in such a way that the recess is arranged centrally in the workpiece in the transverse direction.

However, it can also be provided that a part of the at least one milling unit is moved, at least partially guided, through the workpiece by means of the guide device in such a way that the recess is arranged closer to a first side face of the workpiece. A recess in an end face of a workpiece is thus implemented in a decentralized manner. To do this, the second support unit must be shifted in the transverse direction relative to the milling unit.

With a decentralized positioning of the recess with a defined deviation from the central position, there are now two possibilities: either the recess is arranged to the left or to the right of the center as seen from the end face of the workpiece brought into abutment with a stop element.

In an exemplary embodiment of the chain milling device with two stop elements whose end parts are aligned with one another, the left-hand and right-hand positioning of the recess can be implemented without an adjustment on the chain milling device.

This is solved in that the workpiece is brought into abutment with the first stop element for left-hand positioning of the recess. For a right positioning of the recess, the workpiece is brought into abutment with the second stop element. In the case of a piece of furniture with a furniture carcass comprising two side walls, in which a recess for a furniture fitting is to be created near the top or bottom of both side walls, preferably at a distance of about 21 mm from the top or bottom of both side walls, it can be provided that the Recesses are arranged decentralized closer to the interior or exterior of the furniture body.

A method in which such a piece of furniture is produced can have the following method steps: according to the method for milling a recess, a recess is milled in a first furniture panel in such a way that the recess is arranged closer to a first side surface of the first furniture panel, wherein a stop end face of the first furniture panel is brought into contact with at least one first stop element, a recess is milled in a second furniture panel according to the method for milling a recess in such a way that the recess is arranged closer to a second side surface of the second furniture panel, with a stop end face the second furniture panel is brought into contact with at least one second stop element, a furniture fitting is inserted into the recesses, the furniture fitting is fastened in the recesses.

Further details and advantages of the invention are explained in more detail below on the basis of the description of the figures with reference to the drawings. Show in it:

Fig. 1 is an exploded view of a chain milling device, Fig. 2 is a perspective view of a

chain milling device, 3 is a side sectional view of a

chain milling device,

Fig. 4 is a front view of a chain milling device,

5a, b shows a support device with two stop elements in FIG. 5a in an exploded view and in FIG. 5b in a perspective view,

6a-c a support device with two stop elements in FIG. 6a in a perspective view, in FIG. 6b in a detailed view of the contact area and in FIG. 6c in a plan view,

7 shows a perspective view of the support device with a workpiece placed against a first stop element with only one side part,

Fig. 8 a perspective view of the support device with a workpiece placed against a first stop element, Fig. 9 a perspective view of the support device with a workpiece placed on a second stop element, Fig. 10a-c a milling unit and a support device before milling a recess in Fig. 10a in a perspective view, in FIG. 10b in a detailed view of the contact area and in FIG. 10c in a plan view,

11a-c a milling unit, a support device and a workpiece before milling a recess in FIG. 11a in a perspective view, in FIG. 11b in a front view and in FIG. 11c in a detailed view of the contact area, FIGS. 12a-c a sectional view of the milling unit,

Support device and workpiece when milling a recess in a first position in FIG. 12a in a perspective view, in FIG. 12b in a front view and in Fig. 12c in a detailed view of the contact area, Fig. 13a-c a sectional view of the milling unit,

Support device and workpiece when milling a

Recess in a second position in Fig. 13a in a perspective view, in Fig. 13b in a front view and in Fig. 13c in a detailed view of the contact area,

Fig. 14a-c a sectional view of the milling unit,

Support device and workpiece when milling a

Recess in a third position in Fig. 14a in a perspective view, in Fig. 14b in a front view and in Fig. 14c in a detailed view of the contact area,

15 shows a sectional view of the splinter guard, a stop element and the milling unit with a recess already milled in the workpiece,

16a, b furniture panel with a recess and in FIG. 16a with a furniture fitting and in FIG. 16b with a fitting arranged in the recess

furniture fitting .

Fig. 1 shows an exploded view of a

Chain milling device 27 for milling a pocket-shaped recess 44 in a workpiece 29, preferably a recess 44 starting from an end face 48 of a furniture panel 47 and in the plane of the furniture panel 47.

Fig. 2 shows a perspective view, Fig. 3 shows a side sectional view and Fig. 4 shows a front view of such a chain milling device 27.

The chain milling device 27 comprises a support device 30 for placing the workpiece 29, a fixing device 7 for fixing the workpiece 29 on the support device 30, at least one milling unit 33 comprising a milling chain 19 and a chain guide 20, a guide device 34, wherein the at least one milling unit 33 can be moved relative to the support device 30 by means of the guide device 34, at least partially guided, and a drive unit 23 for driving the at least one milling unit 33 .

The support device 30 consists of a first support unit 31, which has a support surface 51 inclined slightly from the horizontal, and a second support unit 32, which has a leaning surface 77 inclined slightly from the vertical.

The first support unit 31 is strip-shaped and the second support unit 32 is plate-shaped, both are flat. The two units form a right angle to each other. The at least one stop element 3 and the bearing surface 51 are provided on the first bearing unit 31 .

The second support unit 32 has a stationary back plate 6 and an adjustable adjustment plate 5, preferably with the adjustment plate 5 being adjustable in parallel with respect to the back plate 6. The adjustment can be implemented using a self-locking spindle. In particular, a two-scale adjustment, ie a coarse adjustment and a fine adjustment, can be provided.

The support device 30, in particular the first support unit 31, comprises at least one support element 2, at least one stop element 3 and at least one support surface 51 for placing the workpiece 49.

The support device 30, in particular the first support unit 31, has a splinter guard 1, the workpiece 29 on Splinter protection 1 can be placed directly and over a large area and the surface of the splinter protection 1 forms the bearing surface 51 .

A panel-shaped workpiece 29 can be placed with one face on the first support unit 31, in particular on a support surface 51, and can be leaned with a side surface on the second support unit 32, in particular on a leaning surface 57.

The fixing device 7 has a lever mechanism 59, with at least one fixing element 15, 16 being adjustable by means of the lever mechanism 59. A first fixing element 15 can be adjusted by the lever mechanism 59 in a first direction, while a second fixing element 16 can be adjusted by the lever mechanism 59 in a second direction, preferably orthogonal to the first direction, with the lever mechanism 59 particularly preferably being actuatable by an actuating lever 8. The lever mechanism can be seen particularly well in FIG.

The first fixing element 15 can be adjusted in the direction of the first support unit 31 and a workpiece 29 can thus be pressed against the first support unit 31 . The second fixing element 16 can be adjusted in the direction of the second support unit 32 and a workpiece 29 can thus be pressed against the second support unit 32 .

The first fixing element 15 can be pre-placed on an adjusting rod 17 by means of an adjusting lever 18 . This means that different sizes of workpieces 29 can be gripped by the fixing device 7 .

Here, the second fixing element 16 is designed as a strip which is connected via the lever mechanism 57 to a base plate 57 connected is. The actuating rod 17 is also attached to the base plate 57 via the lever mechanism 57 .

The base plate 57 is fastened to the support device 30, in particular to the first support device 31, via a frame.

The guide device 34 comprises a fastening element 40 and a movement element 41, the position of the movement element 41 being adjustable relative to the fastening element 40.

The fastening element 40 can be fastened to the support device 30, in particular the back plate 6 of the second support unit 32.

The at least one milling unit 33 is attached to the moving element 41, and the drive device 23 is also attached to the moving element 41. The milling unit 33 can therefore be moved with the moving element 41 .

The moving element 41 is connected to the fastening element 40 via two guide rods 14 . Here the movement element 40 is fastened to the guide rods 14, the guide rods 14 together with the fastening element 40 being movable relative to the fastening element 40, preferably linearly. The longitudinal direction of the guide rods 14 is orthogonal to the support surface 51, ie the surface of the splinter guard 1, aligned. This enables a guided movement of the milling unit 33 orthogonally to the support surface 51 .

A pneumatic and/or hydraulic drive 42, comprising a piston-cylinder unit 43 for adjusting the relative position of the moving element 41 and the fastening element 40, is arranged in the region of the fastening element 40. The force is transferred from the fastener 40 to the Moving element 41 transferred. In this way, the guide rods 14, the moving element 41 and the milling unit 33 can be moved in a driven manner. A section of the piston-cylinder unit can be seen in FIG.

The milling unit 33 will be described in more detail below. A closer view of the milling unit 33 is given in FIGS. 11a to 14c. 15 shows a sectional view.

The chain guide 20 is flat, in particular sword-shaped, and the milling chain 19 can be guided on the outer edge of the chain guide 20 . This structure is similar to that of a chainsaw.

Two deflection rollers 69 are arranged on a milling side of the chain guide 20, preferably with the position of at least one of the deflection rollers 69 being adjustable, whereby the width of the milling side of the chain guide 20, and thus of the milling unit 33, can be adjusted. This is important to counteract the reduced width caused by wear of the milling chain 19. The deflection roller 69 can be mounted on an adjustment element 62, the adjustment element 62 being displaceable relative to the chain guide 20 and being secured by screws (see FIG. 15).

In addition, the milling side of the chain guide 20 has a curved shape that is also slightly asymmetrical. This makes it easier to mill into the workpiece.

The chain guide 20 is connected to the drive unit 23 at an attachment side. The chain teeth 60 of adjacent chain links 61 are staggered. The milling chain 19 can be automatically pretensioned by means of a chain tensioning eccentric 21 . The drive device 23 has a motor 22, preferably an electric motor, with the milling chain 19 being drivable by means of the motor 22. In this case, the drive device 23 is arranged on the guide device 34 , in particular the movement element 41 . When the milling unit 33 moves, the drive device 23 is also moved. As a result, the milling chain 19 can be driven directly and no shafts or gears are necessary.

The at least one milling unit 33 is covered and/or enclosed by a suction device 9 . The suction device 9 has a first suction cover 11 and a second suction cover 12, the first suction cover 11 and the second suction cover 12 being telescopically movable into one another. With this, the length of the suction cover 12 can be changed depending on the position of the milling unit 33 .

The first suction cover 11 has a viewing window 13 through which the milling unit 33 can be seen. For example, the chain pretension, in particular by means of the chain tensioning eccentric 21, of the milling chain 19 can be read with it.

A suction hose 10 can also be seen in FIGS. This allows milled material to be transported into a container provided for this purpose. In addition, the milling unit 33 is cooled.

The chain milling device 27 can be attached via a stand 24, via two legs 26 to a workbench, another frame or to the floor. The stand 24 also has two fastening legs 25, the chain milling device 27 with the support device 30, in particular the back plate 6, being able to be fastened to the fastening legs 25. Figures 5a, b show a support device 30, in particular a first support unit 31, with two stop elements 53, 54 in an exploded view and in a perspective view.

It should be noted that, in particular in the following, the term "at least one stop element 3" is also to be understood as a generic term for the first and the second stop element 53, 54.

6a also shows a support device 30, in particular a first support unit 31, with two stop elements 53, 54 in a perspective view. FIG. 6c shows a plan view of the object from FIG. 6a. FIG. 6b shows a detail of the contact area 28 from FIG. 6c.

The first support element 31 can be connected to the second support element 32 via a connecting element 67 .

The at least one stop element 3 is pivoted about an axis of rotation D on the support element 2, with the at least one stop element 3 protruding in a first pivot position 49 over the at least one bearing surface 51 on the workpiece side and the at least one stop element 3 in a second pivot position 50 completely below the at least a support surface 51 can be arranged.

As can be seen from FIG. 5a, the axis of rotation D is defined here by the longitudinal direction of an axle pin, which can be fastened in a bore in the support element 2.

The at least one stop element 3 is held in the first pivot position 49 by a spring element 52, which is designed as a torsion spring, and can be pressed into the second pivot position 50, in particular by a workpiece 29. That Spring element 52 can be supported on at least one stop element 3 , particularly preferably on a screw, and the support element 2 . In addition, the at least one stop element 3 has a pin 55 , the pin 55 resting against the support element 2 in the first pivoting position 49 .

The at least one stop element 3 has a longitudinal direction L, the longitudinal direction L being arranged parallel to the bearing surface 51 and orthogonally to the axis of rotation D.

The at least one stop element 3 has a base body 56 , the at least one stop element 3 being mounted on the support element 2 so that it can pivot about an axis of rotation D via the base body 56 .

The upper side 63 of the base body 56 is aligned parallel to the bearing surface 51 in the second pivot position 50, like the upper side 63 of the second stop element 54 in FIGS. 5a, b. In particular, the upper side 63 lies in the plane of the support surface 51. In addition, the upper side 63 of the base body 56 is arranged in the first pivot position 49 on a first narrow side 74 of the base body 56 in the plane of the support surface 51 and on a second narrow side 75 of the base body above the Level of the support surface 51 arranged, like the top 63 of the first stop element 53 in Figures 5a, b.

The at least one stop element 3 has at least one end part 37, the at least one end part 37 protruding beyond the base body 56 on a second narrow side 75 of the base body 56 in the longitudinal direction L and the at least one end part 37 having a stop surface 76 facing away from the base body 56 which the workpiece 29 can be placed. The stop surface 76 is aligned orthogonally to the support surface 51 in the first pivot position 49 . In addition, the position of the at least one end part 37 relative to the base body 57 can be adjusted, particularly preferably via a threaded screw 68, and the at least one end part 37 is made of an elastic material, for example hard rubber.

As mentioned above, a first stop element 53 and a second stop element 54 are provided in all figures, with both stop elements 53, 54 being arranged along an imaginary line along the longitudinal direction L of both stop elements 53, 54, with the second narrow sides 75 of the base body 56 of the the two stop elements 53, 54 are directed toward one another. The two end parts 37 are thus aligned with one another.

The support device 30 has a splinter guard 1, wherein the workpiece 29, preferably a furniture panel 47 with one of its end faces 48, can be placed directly and flatly on the splinter guard 1, and the at least one milling unit 33 is at least partially guided by means of the guide device 34, through at least a contact area 28 of the splinter guard 1 and wherein the splinter guard 1 at least in the contact area 28 consists of a material that can be milled by the at least one milling unit 33 .

The surface of the splinter guard 1 thus forms the support surface 51 for the workpiece 29.

The splinter guard 1 is essentially flat, in particular plate-shaped or strip-shaped, with at least one contact area 28 being arranged in the center of the side faces of the splinter guard 1 . A prefabricated opening 35 is formed in at least one contact area 28 of the splinter guard 1 . It can also be just one prefabricated depression or nothing at all. The opening 35 can be seen particularly well in FIG. 6b.

The splinter guard 1 has two countersink openings 36 outside the at least one contact area 28, with at least one stop element 3 being arranged in each countersink opening 36, preferably with at least one stop element 3 in the first pivot position 49 on the workpiece side, i.e. on the side of the support surface 51 from the Countersink opening 36 protrudes and is countersunk in the second pivoting position 50 in the countersink opening 36 .

The splinter guard 1 can be detachably fastened to the support element 2, in particular by means of fastening means 38, particularly preferably by means of self-tapping screws.

The splinter guard 1 is made, at least in the contact area 28, from a plastic, preferably a POM plastic, particularly preferably a PASL plastic.

At least one side part 4 can be fastened to the side of the support element 2 , with the side part 4 protruding from the support element 2 over the bearing surface 51 . In particular, two side parts 4 are provided, the side parts 4 being able to be fastened to the support element 2 by means of side part fastening means 65 .

In a method for milling a pocket-shaped recess 44 in a workpiece 29, preferably a recess 44, starting from an end face 48 of a furniture panel 47 and in the plane of the furniture panel 47, using a described chain milling device 27, the workpiece 29 is first positioned on the support device 30 and then fixed to the support device 30 with the fixing device 7 . Only then does the actual milling process with the milling unit 33 take place. The positioning of a workpiece 29 will be discussed in more detail below with reference to FIGS.

In the following it is assumed that the milling unit 33 can be moved, guided in a lifting direction which is orthogonal to the bearing surface 51 . The resulting recess 44 in the workpiece 29 therefore protrudes in the stroke direction H from an end face 48 into the workpiece 29.

In particular, the positioning of a workpiece 29 in the longitudinal direction L on the first support unit 31 should be discussed. The positioning in the transverse direction Q, ie the direction orthogonal to the longitudinal direction L in the plane of the bearing surface 51, is accomplished by adjusting the second bearing unit 32.

The workpiece 29 is typically designed as a rectangular panel, in particular as a furniture panel 47 . The positioning in the longitudinal direction L defines the position of the recess 44 in the face 48, from which the recess 44 extends into the furniture panel 47, in particular the distance of the recess 44 from a stop face 66, which is orthogonal to the face 48 in the case of rectangular panels. Positioning in the transverse direction Q, on the other hand, defines where the recess 44 is located in the thickness of the furniture panel 47 . The recess 44 is usually arranged centrally in the thickness of the furniture panel 47 .

The distance between the recess 44 and a stop face 66 is usually between 15 mm and 30 mm, particularly preferably 21 mm.

For reasons of clarity, only the first support unit 31 and a workpiece 29 are shown in FIGS. The remaining components, in particular the second support unit 32, the milling unit 33, the fixing device 7 and the guide device 34 are not shown.

In FIG. 7, the workpiece 29 is placed with an end face 48 on the support surface 51, with the end face 48 facing downwards and therefore not visible. In the following milling process, the recess 44 is to be milled in this downward-facing end face 48 .

As mentioned above, the bearing surface 51 is produced by the surface of the splinter guard 1. The workpiece 29 is thus placed directly and flatly on the splinter guard 1 . In this way, the edges of the recess 44 can be prevented from splintering during the subsequent milling process.

In addition, the workpiece 29 is already arranged with a stop face 66 on the stop surface 76 of an end part 37 of a first stop element 53 . The first stop element 53 is in the first pivoting position 49 , ie protrudes beyond the bearing surface 51 .

In order to bring the workpiece 29 into this position, the following method steps have already been carried out: the workpiece was placed on the support surface 51, the workpiece 29 was brought with a stop face 66 into abutment with at least one stop element 3 in the first pivot position 49.

A second stop element 54 , which is in the second pivot position 50 , can also be seen in part in FIG. 7 . The second stop element 54 is pressed down into the second pivot position 50 by the weight of the workpiece 29 . In order to bring the workpiece 29 into the position shown in FIG. 7, the following method steps can be carried out more precisely: the workpiece 29 was placed on the support surface 51 beyond the second stop element 54, to the right of the second stop element 54 in FIG. the workpiece 29 was pushed along the support surface 51, to the left in FIG. 7, over the second stop element 54, so that the second stop element 54 is pressed into the second pivot position 50.

Therefore, the tops 63 of the stop elements 53, 54 are obliquely shaped, as can be seen in FIG. A workpiece 29 can therefore easily be pushed over a stop element 53, 54.

A side part 4 is not shown in FIG. 7 for reasons of clarity. Fig. 8 shows the representation from Fig. 7 with both side parts 4.

In summary, at least the following method steps were carried out in Fig. 7 and Fig. 8 in order to position the workpiece 29: the workpiece 29 is placed on the support surface 51, with the second stop element 54 being moved into the second pivot position by the weight of the workpiece 29 50 is pressed, the workpiece 29 is brought into abutment with the first stop element 3 in the first pivot position 49 .

In contrast, at least the following method steps were carried out in FIG. the workpiece 29 is brought into contact with the at least one second stop element 3 in the first swivel position 49 .

It is therefore possible to bring the workpiece 29 into contact with a stop element 53, 54 from two different sides along the longitudinal direction L.

With a decentralized positioning of the recess 44 in the workpiece 29 with respect to the thickness of the workpiece 29, ie in the transverse direction Q, the recess 44 can be arranged decentrally on one side or the other by using two stop elements 53, 54. However, the distance between the stop face 66 and the recess 44 can remain the same in both cases, in particular between 15 mm and 30 mm, particularly preferably at 21 mm.

The distance between the stop face 66 and the recess 44 can also be set differently depending on the stop element 53, 54 - for example by adjusting the end part 37, in particular via the threaded screw 68.

Figures 10a-c show the support device 30, in particular the first support unit 31, in the same views as Figures 6a-c. For this purpose, the milling unit 33 is shown in a position before the milling process.

The minimum distance between the stop surface 76 and the milling chain 19 during the at least partially guided movement of the milling unit 33 defines the distance between the stop face 66 and the recess 44. As already mentioned above, this distance is preferably between 15 mm and 30 mm , particularly preferably 21 mm. The support element 2 has a passage 64, with the splinter guard 1 being accessible through the passage 64 for the at least one milling unit 33, preferably with the passage 64 having a length of between 100 mm and 130 mm, particularly preferably 120 mm. In any case, the passage 64 must be dimensioned in such a way that the milling unit 33 can be guided through it.

The passage 64 is not clearly visible in any of the figures since it is covered by the splinter guard 1 . In FIGS. 10b and 10c, however, the milling chain 19 can be seen through the prefabricated opening 35 in the splinter guard 1 and through the passage 64 in the support element 2.

The at least one milling unit 33 can be moved, at least partially guided, by means of the guide device 34 through at least one contact region 28 of the splinter guard 1 . At least in the contact area 28 , the splinter guard 1 consists of a material that can be milled by the at least one milling unit 33 . The splinter guard 1 is also milled in the first milling process.

It is therefore not essential that the prefabricated opening 35 in the splinter guard 1 is dimensioned in such a way that the milling unit 33 can be guided through it. On the contrary, the prefabricated opening 35 may be dimensioned at most as large as the maximum cross section of the milling unit 33 so that the splinter guard 1 can prevent the edges of the recess 44 from splintering. The opening 35 only serves to reduce the amount of material to be milled in the splinter guard 1 . The prefabricated opening 35 can also be replaced by a countersink or can be omitted. The at least one milling unit 33 is at least partially guided by means of the guide device 34 and moves between the first stop element 53 and the second stop element 54 . The distance between the two stop elements 53, 54 is therefore greater than the width of the milling unit 33, the distance preferably being between 100 mm and 140 mm, particularly preferably 125 mm.

FIGS. 11a-c to 14a-c show different positions of the milling unit 33 relative to the support device 30 and a workpiece 29 placed thereon during the milling process.

For reasons of clarity, only the first support unit 31, the milling unit 33 and a workpiece 29 are shown. The remaining components, in particular the second support unit 32, the fixing device 7 and the guide device 34, are not shown.

As shown in FIGS. 7 and 8, the workpiece 29 is placed on the support surface 51 and brought into abutment with the first stop element 53 . The positioning process has already been described above.

In a further method step, the workpiece 29 is fixed with the fixing device 7 on the support device 30 , in particular the first support unit 31 and the second support unit 32 .

The at least one milling unit 33 is driven by the drive unit 23 so that the milling chain 19 is guided around the chain guide 20 .

The actual milling process now begins with an at least partially guided movement of the milling unit 33 by means of the Guide device 34. A part of the at least one milling unit 33 is moved by means of the guide device 34, at least partially guided, while milling through the workpiece 29, preferably with a part of the at least one milling unit 33 being guided over an end face 48 of the workpiece 29 into a furniture panel 47 formed workpiece 29 occurs.

The movement of the milling unit 33 is preferably fully guided.

In order to get to the workpiece 29, a part of the at least one milling unit 33 is moved at least partially guided by the guide device 34 through at least one contact region 28 of the splinter guard 1.

During the first milling process with a new splinter guard 1, the splinter guard 1 is milled through at least one contact area 38 during the movement of the at least one milling unit 33. During further milling processes (with exchanged workpieces 29), the at least one milling unit 33 passes through the opening that was milled itself. This guarantees that the milled opening is optimally adapted to the milling unit 33 and the guided movement, with the splinter guard 1 not having to be positioned exactly. This prevents the edges of the recess 44 from chipping.

After a certain number of milling processes or when the results are no longer good enough, the splinter guard 1 is replaced. The splinter guard 1 is therefore designed as an inexpensive sacrificial piece.

If a prefabricated opening 35 is already formed on the splinter guard 1, depending on the dimensioning of the prefabricated opening 35, only a small amount of material of the Splinter protection 1 are milled away. However, this is not necessary.

The movement of the at least one milling unit 33 through at least one contact area 38 of the splinter guard 1 and the workpiece 29 can be completed in a continuous movement sequence. Provision is also preferably made for the movement to run essentially linearly and orthogonally to the surface of the splinterguard 1, in the stroke direction H.

This at least partially guided movement of the milling unit 33 into the workpiece 29 can be seen from the sequence of FIGS. 11a-c to 14a-c:

In FIGS. 11a-c, the milling unit 33 has not yet been passed through the passage 64 of the support element 2. Nothing has been milled yet.

In FIGS. 12a-c, the milling unit 33 has already partially milled through the splinter guard 1, but has not yet penetrated the workpiece 29. The milling unit 33 has already been guided through the passage 64 of the support element 2 .

In FIGS. 13a-c, the milling unit 33 has already partially penetrated the workpiece 29. Here only a bend at the tip of the milling unit 33 has penetrated the workpiece.

In FIGS. 14a-c, the milling unit 33 has penetrated the workpiece 29 with the entire tip. Depending on how deep the recess 44 is to be, the milling unit 33 is inserted further into the workpiece 29 . The guide device 33 is then removed from the workpiece 29 again, preferably along the same path of movement, and guided under the support element 2 .

This creates a recess 44 in the workpiece, preferably a recess 44 starting from an end face 48 of a furniture panel 47 and in the plane of the furniture panel 47. A finished recess 44 is shown in the sectional view of FIG Workpiece 29 has been removed.

The milling unit 33 can be moved over a stroke of more than 200 mm, preferably more than 250 mm, the stroke of the milling unit 33 defining a depth of the pocket-shaped recess 44 to be milled. For example, it can be provided that the depth of the recess 44 is approximately 265 mm.

16a shows a furniture board 47 with a recess 44 and a furniture fitting 46, as can be produced with the chain milling device 27. FIG. The recess 44 extends from an end face 48 of the furniture panel 47 and lies in the plane of the furniture panel 47.

The furniture board 47 is preferably formed as a chipboard. This enables an inexpensive piece of furniture.

The furniture fitting 46 has a base body 71 . An actuating arm 72 protrudes from an opening 73 in the base body 71 . The actuating arm 71 can be subjected to force by means of a force accumulator 70 .

The furniture fitting 46 is suitable, for example, for flaps which can be opened upwards. The furniture board 47 then acts as one of preferably two side walls of a piece of furniture. The furniture fitting 46 is already arranged in the recess 44 in FIG. 16b. The base body 71 is thus completely sunk into the furniture panel 47 . Only the actuating arm 72 protrudes from the recess 44 .

A furniture part 45, for example a side wall of a piece of furniture, is thus produced. The furniture fitting 46 can be fastened in the recess 44 using means which are customary in the prior art. In summary, a method for producing a furniture part 45 with a furniture fitting 46 is described, which can be summarized as follows:

- A recess 44 is milled in a workpiece 29 shaped as a furniture panel 47, preferably in one, according to the method for milling a pocket-shaped recess 44

Front side 48 of the furniture panel 47, the furniture fitting 46 is inserted into the recess 44, the furniture fitting 46 is fastened in the recess 44.

reference list

1 splinter guard

2 support element

3 stop element

4 side part

5 adjustment plate

6 back plate

7 fixation device

8 operating levers

9 suction device

10 suction hose

11 first suction cover

12 second suction cover

13 viewing window

14 guide rods

15 first fixing element

16 second fixation element

17 adjusting rod

18 levers

19 milling chain

20 chain guide

21 chain tensioner eccentric

22 engine

23 drive device

24 stands

25 mounting leg

26 mainstay

27 chain milling device

28 contact area

29 workpiece

30 pads device

31 first pad unit

32 second support unit 33 milling unit

34 guiding device

35 prefabricated opening

36 countersink opening

37 end part

38 fasteners

40 fastener

41 movement element

42 pneumatic drive

43 piston-cylinder unit

44 recess

45 furniture part

46 furniture fitting

47 furniture board

48 face

49 first pivot position

50 second pivot position

51 bearing surface

52 spring element

53 first stop element

54 second stop element

55 pen

56 body

57 base plate

58 lift rod

59 lever mechanism

60 sprocket

61 chain link

62 adjustment element

63 Top of the base body

64 bushing (in the supporting element)

65 side panel fasteners

66 stop face

67 connecting element (on the supporting element) Threaded screw deflection roller force accumulator base body adjusting arm

Opening for adjusting arm, first narrow side of the stop element, second narrow side of the stop element, stop surface, leaning surface

Claims

patent claims

1. Chain milling device (27) for milling a pocket-shaped recess (44) in a workpiece (29), preferably a recess (44) starting from an end face (48) of a furniture panel (47) and in the plane of the furniture panel (47). a support device (30) for placing the workpiece (29), a fixing device (7) for fixing the workpiece (29) on the support device (30), at least one milling unit (33) comprising a milling chain (19) and a chain guide (20) , a guide device (34), wherein the at least one milling unit (33) can be moved relative to the support device (30) by means of the guide device (34), at least partially guided, and a drive unit (23) for driving the at least one milling unit (33) , characterized in that the support device (30) comprises at least one support element (2), at least one stop element (3) and at least one support surface (51) for placing the workpiece (49), wherein the at least e A stop element (3) is mounted on the support element (2) so that it can pivot about an axis of rotation (D), the at least one stop element (3) protruding in a first pivoting position (49) over the at least one support surface (51) on the workpiece side and the at least one stop element (3) can be arranged completely under the at least one support surface (51) in a second pivoting position (50).

2. chain milling device (27) according to the preceding claim, wherein the at least one stop element (3) by a spring element (52), preferably by a torsion spring, in the first pivoting position (49) and can be pressed into the second pivoting position (50), in particular by a workpiece (29), preferably with the spring element (52) on at least one stop element (3), particularly preferably on a screw, and can be supported on the support element (2), and/or the at least one stop element (3) has a pin (55), the pin (55) resting on the support element (2) in the first pivoting position (49).

3. Chain milling device (27) according to one of the preceding claims, wherein the at least one stop element (3) has a longitudinal direction (L), the longitudinal direction (L) being arranged parallel to the bearing surface (51) and orthogonally to the axis of rotation (D).

4. Chain milling device (27) according to the preceding claim, wherein the at least one stop element (3) has a base body (56), wherein the at least one stop element (3) can be pivoted about an axis of rotation (D) via the base body (56) on the support element ( 2) is mounted, preferably with the top (63) of the base body (56) being aligned parallel to the support surface (51) in the second pivoted position (50), and/or the top (63) of the base body (56) in the first pivoted position (49) is arranged on a first narrow side (74) of the base body (56) in the plane of the bearing surface (51) and on a second narrow side (75) of the base body above the plane of the bearing surface (51).

5. Chain milling device (27) according to the preceding claim, wherein the at least one stop element (3) has at least one end part (37), wherein the at least one end part (37) on a second narrow side (75) of the base body (56) in the longitudinal direction (L) beyond the base body (56) and the at least one end part (37) has a stop surface (76) facing away from the base body (56) on which the workpiece ( 29), preferably with the stop surface (76) being aligned orthogonally to the support surface (51) in the first pivoting position (49), and/or the position of the at least one end part (37) relative to the base body (57), particularly preferably via a threaded screw (68), and/or the minimum distance between the stop surface (76) and the milling chain (19) during the at least partially guided movement of the milling unit (33) between 15 mm and 30 mm, particularly preferably 21 mm, and/or the at least one end part (37) consists of an elastic material, for example hard rubber.

6. Chain milling device (27) according to one of claims 4 or 5, wherein at least one first stop element (53) and at least one second stop element (54) are provided, both stop elements (53, 54) along an imaginary line along the longitudinal direction (L ) of both stop elements (53, 54) are arranged, preferably with the second narrow sides (75) of the base body (56) of the two stop elements (53, 54) being directed towards one another.

7. Chain milling device (27) according to the preceding claim, wherein the at least one milling unit (33) can be moved by means of the guide device (34), at least partially guided, between the at least one first stop element (53) and the at least one second stop element (54). , preferably wherein the distance is greater than the width of the milling unit (33), preferably wherein the distance is between 100 mm and 140 mm, preferably 125 mm.

8. Chain milling device (27) according to one of the preceding claims, wherein at least one side part (4) can be fastened to the side of the support element (2), the side part (4) protruding from the support element (2) over the bearing surface (51).

9. Chain milling device (27) according to one of the preceding claims, wherein the support device (30) has a splinter guard (1), wherein the workpiece (29) can be placed directly and flatly on the splinter guard (1) and the surface of the splinter guard (1) has the bearing surface (51), and wherein the at least one milling unit (33) can be moved by means of the guide device (34), at least partially guided, through at least one contact area (28) of the splinter guard (1), and wherein the splinter guard (1) is at least in Contact area (28) consists of a material that can be milled by the at least one milling unit (33).

10. Chain milling device (27) according to the preceding claim, wherein the splinter guard (1) outside of the at least one contact area (28) has at least one, preferably two, countersunk opening(s) (36), with at least one stop element (3) in the at least a countersink opening (36) is arranged, preferably with at least one stop element (3) protruding from the countersink opening (36) on the workpiece side in the first pivoting position (49) and being countersunk in the countersinking opening (36) in the second pivoting position (50), and/ or the splinter guard (1) can be detachably fastened to the support element (2), preferably by means of fastening means (38), particularly preferably by means of self-tapping screws, and/or the support element (2) has a passage (64), the splinter guard (1) being accessible through the passage (64) for the at least one milling unit (33), preferably the passage (64) having a length of between 100 mm and 130 mm , preferably 120 mm.

11. Chain milling device (27) according to one of the preceding claims, wherein the support device (30) has a first support unit (31), which preferably has a support surface (51) inclined slightly from the horizontal, and a second support unit (32), which preferably has a has a leaning surface (77) slightly inclined from the vertical, preferably wherein the first support unit (31) and the second support unit (32) are flat, in particular plate-shaped or strip-shaped, and form a right angle to one another, and/or the splinter guard ( 1) is formed on the first support unit (31), preferably on a support element (2), and/or the at least one stop element (3) and the support surface (51) are provided on the first support unit (31), and/or the second support unit (32) has a stationary back plate (6) and an adjustable adjustment plate (5), preferably with the adjustment plate (5) opposite the back plate (6) is parallel adjustable.

12. Chain milling device (27) according to one of the preceding claims, wherein the fixing device (7) has a lever mechanism (59), wherein at least one fixing element (15, 16) can be adjusted by means of the lever mechanism (59), preferably wherein a first fixing element (15 ) from the lever mechanism (59) into a first Direction can be adjusted while a second fixing element (16) can be adjusted by the lever mechanism (59) in a second direction, preferably orthogonal to the first direction, with the lever mechanism (59) being particularly preferably operable by an actuating lever (8).

13 chain milling device (27) according to claims 11 and 12, wherein the first fixing element (15) in the direction of the first support unit (31) is adjustable and thus a

Workpiece (29) can be pressed against the first support unit (31) and/or the second fixing element (16) can be adjusted in the direction of the second support unit (32) and thus a

Workpiece (29) can be pressed against the second support unit (32).

14. Chain milling device (27) according to one of the preceding claims, wherein the chain guide (20) is flat, in particular sword-shaped, and the milling chain (19) can be guided on the outer edge of the chain guide (20), preferably on a milling side of the chain guide (20) at least two deflection rollers (69) are arranged, preferably with the position of at least one of the deflection rollers (69) being adjustable, with the width of the milling side of the chain guide (20) and thus of the milling unit (33) being adjustable as a result, and /or preferably wherein the milling side of the chain guide (20) has a curved shape, and/or the chain guide (20) is connected to the drive unit (23) on a fastening side, and/or the chain teeth (60) of adjacent chain links (61 ) are arranged in an offset manner, and/or the milling chain (19) can be automatically pretensioned by means of a chain tensioning eccentric (21).

15. Chain milling device (27) according to one of the preceding claims, wherein the guide device (34) comprises a fastening element (40) and a movement element (41), the movement element (41) being adjustable in its position relative to the fastening element (40), preferably wherein the fastening element (40) can be fastened to the support device (30), and/or the at least one milling unit (33) can be fastened to the movement element (41), and/or the movement element (41) with the fastening element (40) via at least one guide rod (14) can be connected, the movement element (41) and/or the fastening element (40) being able to be moved on the at least one guide rod (14), preferably linearly, with the longitudinal direction of the guide rod (14) particularly preferably being orthogonal to the bearing surface ( 51) and/or a pneumatic and/or hydraulic drive (42) comprising a piston-cylinder unit (43) for adjusting the relative position ion of moving element (41) and fastening element (40) is provided, preferably wherein the force can be transmitted by a lifting rod (58) from the fastening element (40) to the moving element (41).

16. Chain milling device (27) according to any one of the preceding

Claims, wherein the drive device (23) comprises a motor (22), preferably an electric motor, wherein the milling chain (19) can be driven by means of the motor (22), preferably wherein the drive device (22) is arranged on the guide device (34). .

17. Chain milling device (27) according to any one of the preceding

Claims, wherein the at least one milling unit (33) can be covered and/or enclosed by a suction device (9), preferably wherein the suction device (9) a first suction cover (11) and a second suction cover (12), wherein the first suction cover (11) and the second suction cover (12) can be moved telescopically into one another, preferably wherein the first suction cover (11) has a viewing window (13), and /or the suction device (9) has a suction hose (10), with dust, milled material and heated air being able to be suctioned off via the suction hose (10).

18. Method for milling a pocket-shaped recess (44) in a workpiece (29), preferably a recess (44) starting from an end face (48) of a furniture panel (47) and in the plane of the furniture panel (47), with a chain milling device ( 27) according to one of the preceding claims, comprising the following method steps: the workpiece (29), preferably a furniture board (47) with one of its end faces (48), is placed on the support surface (51), the workpiece (29) is preferably with a stop face (66), brought into contact with at least one stop element (3) in the first pivoting position (49), the workpiece (29) is fixed with the fixing device (7) on the support device (30), the at least one milling unit (33) is driven by the drive unit (23), a part of the at least one milling unit (33) is moved by means of the guide device (34), at least partially guided, while milling through the workpiece (29), preferably wherein a part of the at least one milling unit (33) enters a workpiece (29) shaped as a furniture panel (47) via an end face (48) of the workpiece (29).

19. Method according to the preceding claim, with the method steps: the workpiece (29) is placed on the supporting surface (51) beyond the at least one stop element (3), the workpiece (29) is moved along the supporting surface (51) over the at least one stop element (3) is pushed so that the at least one stop element (3) is pressed into the second pivot position (50).

20. The method according to the preceding claim, wherein at least one first stop element (53) and at least one second stop element (54) are provided, with the following method steps: the workpiece (29) is placed on the support surface (51), the second Stop element (54) is pushed into the second pivot position (50) by the weight of the workpiece (29), the workpiece (29) comes into contact with the at least one first stop element (3) in the first

pivoted position (49), and/or with the following method steps: the workpiece (29) is placed on the support surface (51), the first stop element (54) being moved into the second pivoted position (50) by the weight of the workpiece (29). is pressed, the workpiece (29) comes into contact with the at least one second stop element (3) in the first

Pivot position (49) brought.

21. Method for producing a furniture part (45) with a furniture fitting (46) with the following method steps: according to the method for milling a pocket-shaped recess (44) according to one of claims 18 to 20, a recess (44) is made in a furniture panel (47) molded Workpiece (29) is milled, preferably in an end face (48) of the furniture panel (47), the furniture fitting (46) is inserted into the recess (44), the furniture fitting (46) is fastened in the recess (44).