EP3172012B1 - Finishing device - Google Patents

Description

The invention relates to a finishing device, comprising a pressing arm and a pressing tool for pressing a finishing tool against a workpiece, according to EP 1 447 170 A1 and US 4,993,191 A ,

Finish devices are for example from the EP 2 212 058 B1 and from the DE 20 2013 005 504 U1 known. They serve to press a finishing tool (for example, a finishing belt) against a finish to be machined workpiece surface. In this case, the workpiece rotates and is simultaneously oscillated back and forth parallel to the axis of rotation. This results in a characteristic of the finishing process cross-cut structure.

In the from the EP 2 212 058 B1 and from the DE 20 2013 005 504 U1 Known finishing devices, the pressure tool is connected by means of a simple screw with the Andrückarm. From the DE 20 2014 000 094 U1 Another finishing device is known.

The present invention has for its object to simplify the installation of a pressure tool.

This object is achieved in a finishing device with the features of the preamble of claim 1 according to the invention by the characterizing features of claim 1.

According to the invention, a base support is provided whose position and / or position can be adjusted relative to the pressing arm by means of an adjusting device. If the basic carrier assumes a desired position and / or position relative to the pressing arm, the basic carrier can be fixed to the pressing arm by means of the first connecting device. The second connection device serves to connect the base support with the pressure tool. The pressing tool then no longer has to be aligned relative to the pressure arm, but merely connected to the base support. This allows a simple and quick replacement of a pressing tool, which is due to wear or to be mounted to prepare a new workpiece lot.

In addition, the second connecting device makes it possible to connect pressing tools in the form of set-up tools to the basic carrier. Such setting tools may optionally be made more stable than pressing tools, which are used as a working tool, for example, to press a finishing belt against a finish to be machined workpiece surface.

It is preferred if the pressing tool comprises a pressing belt and a Andrückbandhalter. The Andrückbandhalter has a connecting portion for connection to a connecting portion of the base support. These connection sections form the second connection device.

In particular, the pressure belt is a bendable belt which can be used for finish machining workpiece surfaces with different diameters. In this case, the pressure belt and the finishing belt wrap around the finish to be machined workpiece surface over a wrap angle, which, for example, is greater than 10 ° or 20 °.

Furthermore, it is preferred if the finishing device has a pressing tool with a rigidly formed pressing portion. Such a pressing tool is mechanically robust and can be used, for example, as a setting tool in the course of preparing for the production of a workpiece lot, but alternatively or additionally as a working tool. Both a pressing tool in the form of a working tool and a pressing tool in the form of a setting tool are preferably releasably connected releasably connected to the base support, so that any pressing tools can be easily and quickly released from the base support and connected to this.

In the event that a pressing tool is used with a rigidly formed pressing portion, it is preferred that the pressing portion is formed like a shell or prism. Such a pressing portion allows a large or multi-surface contact of the Andrückabschnitts on surfaces Einrichtwerkstücks or one to machining workpiece. This system simplifies the alignment of the base carrier relative to the pressing arm by means of the adjusting device.

In a particularly preferred embodiment it is provided that the first connecting device comprises a tilt-adjustable screw which forms the adjusting device. Such a screw connection preferably comprises spherical discs and conical cups, which can be adjusted in their inclination relative to each other, so that an axis of a screw, which passes through the spherical disc and conical socket, is also adjustable in its inclination to define a slope of the base support relative to the Andrückarm , A simple way of influencing the position of the base carrier on the pressing arm is to provide the base carrier or the pressing arm with slots, so that the position of the screw and thus the relative position of the base support is adjustable relative to the pressing arm.

In a preferred embodiment of the invention it is provided that the base support has a particular U-shaped support frame for attachment to the Andrückarm. Such a support frame allows a simple and accurate tolerance storage of a pressure tool on the base support.

The base support may be integrally formed. The base support may also be designed in several parts and, for example, have a particular U-shaped inner frame, which is held on the holding frame and which serves to hold the pressing tool. It is possible for the inner frame to be mounted on the holding frame in such a way that the inner frame can move along or around certain axes of movement in order to provide a movable mounting of the pressing tool relative to the basic carrier.

It is preferred if the base support and the pressure tool have contact surfaces which define the relative position of the pressure tool on the base support. In this way, an adjustment of the position and / or position of the base carrier made on the base carrier relative to the pressing arm is transmitted to the pressing tool.

The second connection device can be formed by a screw connection in the simplest case (not according to the invention).

According to the invention, the second connection device can be actuated without tools and is designed as a latching connection. This makes it possible to provide a quick-change interface between the pressing tool and the base support.

According to the invention, the second connecting device comprises a latching element, which occupies a locking position for locking the pressing tool on the base carrier in a rest position and which in particular can be moved manually into a release position, in which the pressing tool is detachable from the base carrier. This allows a particularly fast attachment of a pressure tool to the base support and a particularly rapid release of the pressure tool from the base support. This is particularly advantageous if the base support is already aligned by means of the adjustment relative to the Andrückarm.

The second connecting means described above are also advantageous for finishing devices, which have no adjustment for adjusting the position and / or position of the base support relative to the Andrückarm and in which only a first connection means for connecting the base support is provided with the Andrückarm.

The object mentioned at the outset is also achieved by a method for setting up a finishing device described above in which a pressing tool designed as a setting tool is connected to the base support, the pressing tool is applied to a set-up piece or to a workpiece to be finish-finished in order to align the base support and determine the position and / or position of the base support, wherein further, the base support is attached to the Andrückarm, removes the Einrichtwerkzeug and designed as a machining tool Pressing tool is connected to the base support.

With regard to the advantages and refinements of the aforementioned method, reference is made to advantages and refinements of the above-described finishing device.

Further features and advantages of the invention are the subject of the following description and the drawings of preferred embodiments.

• Figur 1 eine Seitenansicht einer Ausführungsform einer Finishvorrichtung, mit einem Andrückwerkzeug in Form eines Einrichtwerkzeugs und mit einem Einrichtwerkstück;
• Figur 2 eine Schnittansicht der Finishvorrichtung gemäß Fig. 1;
• Figur 3 eine Vorderansicht der Finishvorrichtung gemäß Fig. 1;
• Figur 4 eine der Fig. 1 entsprechende Seitenansicht, mit einem Andrückwerkzeug in Form eines Bearbeitungswerkzeugs und mit einem zu bearbeitenden Werkstück;
• Figur 5 eine Schnittansicht der Finishvorrichtung gemäß Fig. 4;
• Figur 6 eine Vorderansicht der Finishvorrichtung gemäß Fig. 4;
• Figur 7 eine Seitenansicht einer weiteren Ausführungsform einer Finishvorrichtung, wobei eine Verbindungseinrichtung zur Verbindung eines Andrückwerkzeugs mit einem Grundträger in ihrem Freigabezustand dargestellt ist;
• Figur 8 eine Vorderansicht der Finishvorrichtung gemäß Fig. 7;
• Figur 9 eine Schnittansicht der Finishvorrichtung gemäß Fig. 7 längs einer in Fig. 8 mit IX - IX bezeichneten Schnittebene;
• Figur 10 eine Schnittansicht der Finishvorrichtung gemäß Fig. 7 längs einer in Fig. 7 mit X - X bezeichneten Schnittebene;
• Figur 11 einen in Fig. 10 mit XI bezeichneten Ausschnitt in vergrößerter Darstellung;
• Figur 12 eine perspektivische Ansicht der Finishvorrichtung gemäß Fig. 7;
• Figur 13 bis Figur 17 den Figuren 7 bis 11 jeweils entsprechende Ansichten, wobei die Verbindungseinrichtung in ihrem Verriegelungszustand dargestellt ist;
• Figur 18 eine Seitenansicht einer weiteren Ausführungsform einer Finishvorrichtung, wobei eine Verbindungseinrichtung zur Verbindung eines Andrückwerkzeugs mit einem Grundträger in ihrem Freigabezustand dargestellt ist;
• Figur 19 eine Schnittansicht der Finishvorrichtung gemäß Fig. 18 längs einer in Fig. 18 mit XIX - XIX bezeichneten Schnittebene;
• Figur 20 eine perspektivische Darstellung der Finishvorrichtung gemäß Fig. 18;
• Figur 21 bis Figur 23 den Figuren 18 bis 20 jeweils entsprechende Ansichten, wobei die Verbindungseinrichtung in ihrem Verriegelungszustand dargestellt ist.

In the drawings show:

• FIG. 1 a side view of an embodiment of a finishing device, with a pressing tool in the form of a Einrichtwerkzeugs and with a Einrichtwerkstück;
• FIG. 2 a sectional view of the finishing device according to Fig. 1 ;
• FIG. 3 a front view of the finishing device according to Fig. 1 ;
• FIG. 4 one of the Fig. 1 corresponding side view, with a pressure tool in the form of a machining tool and with a workpiece to be machined;
• FIG. 5 a sectional view of the finishing device according to Fig. 4 ;
• FIG. 6 a front view of the finishing device according to Fig. 4 ;
• FIG. 7 a side view of another embodiment of a finishing device, wherein a connecting means for connecting a pressing tool is shown with a base support in its release state;
• FIG. 8 a front view of the finishing device according to Fig. 7 ;
• FIG. 9 a sectional view of the finishing device according to Fig. 7 along a in Fig. 8 sectional plane designated IX - IX;
• FIG. 10 a sectional view of the finishing device according to Fig. 7 along a in Fig. 7 sectional plane designated X - X;
• FIG. 11 one in Fig. 10 with XI designated section in an enlarged view;
• FIG. 12 a perspective view of the finishing device according to Fig. 7 ;
• FIG. 13 to FIG. 17 the FIGS. 7 to 11 respective views, wherein the connecting device is shown in its locked state;
• FIG. 18 a side view of another embodiment of a finishing device, wherein a connecting means for connecting a pressing tool is shown with a base support in its release state;
• FIG. 19 a sectional view of the finishing device according to Fig. 18 along a in Fig. 18 cutting plane labeled XIX - XIX;
• FIG. 20 a perspective view of the finishing device according to Fig. 18 ;
• FIG. 21 to FIG. 23 the FIGS. 18 to 20 respectively corresponding views, wherein the connecting device is shown in its locked state.

One in the FIGS. 1 to 6 illustrated finishing device is generally designated by the reference numeral 10. The finishing device 10 comprises a frame 12 with two pivot axes 14, 16 for the pivotal mounting of a respective pressing arm 18, 20.

The finishing device 10 comprises a pressing drive 22, by means of which the pressing arms 18, 20 are pivotable such that the free ends 24, 26 of the pressing arms 18, 20 in the direction of an axis 28 of Einrichtwerkstücks 30 (see. FIGS. 1 to 3 ) or in the direction of a workpiece axis 32 of a workpiece to be machined finishend (see FIG. 4 to 6 ), in particular in the form of a crankshaft.

During finishing machining of the workpiece 34, the pressing arms 18, 20 serve to transmit a pressing force to a subsequently described pressing tool in order to press a finishing belt 36 against a finish-to-be-machined surface of the workpiece 34 (cf. FIG. 4 ). The finishing belt 36 is removed in a conventional manner from a supply 38, supplied to the workpiece 34, deflected in the region of a deflection 40, guided back to the workpiece 34 and fed from there to a collector 42.

In the region of the free ends 24, 26 of the Andrückarme 18, 20 are basic carrier 44 is provided, which are preferably U-shaped and each by means of a first connecting means 46 with a the Andrückarme 18, 20 are connected.

The first connecting means 46 comprise screws 48 which pass through openings 50 of the pressing arms 18, 20. On both sides of the Andrückarms 18, 20 units 52, 54 are provided which each comprise a spherical disk and a conical socket and make it possible to adjust the inclination of the screws 48 within the through holes 50. The screws 48 are screwed with their ends 56 to the base support 44. In this way, an adjusted by means of the units 52, 54 inclination of the screws 48 is transmitted to the base support 44. Thus, the units 52 and 54 together with the screws 48 each form an adjusting device 58 for adjusting the position and / or position of the base support 44 relative to a respective pressing arm 18, 20th

The base support 44 is connected by means of a second connecting device 60 with a pressure tool 62. In the in the FIGS. 1 to 3 illustrated pressing tool 62 is a set-up tool with a cup-shaped, rigid pressing portion 64th

The pressing tool 62 has a contact surface 66 for abutment against a counter surface 68 of the base support 44. For fixation of the pressing tool 62 on the base support 44, the second connecting device 60 in the simplest case, a screw 70th

For further fixing and / or mounting of the pressing tool 62 on the base support 44 further guide elements 72 may be provided, for example, on the base support 44 held bolts, which cooperate with provided on the pressing tool 62 grooves 74.

To prepare the finishing machining of a workpiece lot of workpieces 34, a pressure tool 62 is connected in the form of a Einrichtwerkzeugs with the base support 44 and the first connection means 52 is loosened. Subsequently, the pressing portion 64 is brought into abutment with a reference surface 76 of a Einrichtwerkzeugs 30 (see. Fig. 3 ), so that the setting tool 62 together with the base support 44 relative to the Andrückarm 18, 20 aligns. In the thus determined position and position state of the base support 44, the first connection means 46 for fixing the base support 44 on the pressing arm 18, 20 is actuated. Subsequently, the second connecting device 60 is released and the pressing tool 62 is removed in the form of Einrichtwerkzeugs of the base support 44 and replaced by a pressure tool 78 in the form of a machining tool, see. FIGS. 4 to 6 ,

The pressing tool 78 has a Andrückbandhalter 80 for holding a Andrückbands 82. The Andrückbandhalter 80 is identical in terms of its co-operating with the base support 44 surfaces to the pressure tool 62 in the form of the Einrichtwerkzeugs. Accordingly, the Andrückbandhalter 80 can be connected by means of the second connecting means 60 with the base support 44. In this case, the pressing tool 78 already assumes a predetermined position and position relative to the pressing arm 18, 20 a. Therefore, after positioning the pressing tool 78 on a surface finish 84 of the workpiece 34 (by closing the pincer-like pressing arms 18, 20), machining of the surface 84 can begin immediately without requiring further adjustment operations.

During the finish machining of the workpiece 34, this rotates about a workpiece axis 32. For this purpose, a per se known and therefore not shown rotary drive is provided. This rotational movement is superimposed on an oscillatory movement, namely a movement in opposite directions parallel to the workpiece axis 32. For this purpose, a per se known and therefore also not shown oscillating drive is provided.

One in the FIGS. 7 to 17 illustrated finishing device 10 also includes a base support 44 for mounting to a pressure arm 18, 20. The base support 44 has a U-shaped support frame 86 in which a likewise U-shaped inner frame 88 is arranged. To secure the inner frame 88 to the support frame 86 the bolts bolted to the support frame 72 have through holes 90 of the inner frame 88. The bolts 72 are provided on opposite sides of the support frame 86 and define a pivot axis 92.

Furthermore, a bottom-side, pin-shaped connecting element 94 is provided for connection between the holding frame 86 and the inner frame 88, which protrudes with a free end over a formed by the inner frame 88 counter surface 68.

The inner frame 88 is used for releasably securing a pressing tool 96, which supports cup-shaped pressing elements 98.

For releasable connection of the pressing tool 96 with the base support 44, a second connecting device 60 is provided, which is designed as a latching connection.

The second connecting device 60 comprises a latching element 100 in the form of a push button 102, which is movable along an actuating axis 104.

The push button 102 is acted upon by a spring 106 with a compressive force which tends to push the button 102 from its release position (see. FIG. 11 ) in its locking position (see. FIG. 17 ). In the release position ( FIG. 11 ), the spring 106 is compressed by a fitter on a pressure surface 108 of the push button 102 exerted a compressive force which is higher than the force of the spring 106 in the opposite direction.

The spring 106 is supported on a plate 110, which is firmly connected to the pressing tool 96. The push button 102 has a constriction 112, which is smaller than an access opening 114 of a counter element 116 (see. FIG. 12 ). An extension 118 of the pushbutton 102 which adjoins the constriction 112 in the axial direction is slightly smaller than a receiving opening 120 of the counter element 116. The counter element 116 is fastened to the base support 44, in particular to the inner frame 88.

For mounting the pressing tool 96 on the base support 44, the push button 102 is held in its release position. This will - As the pressing tool 96 is inserted into the inner frame 88, the restriction 112 of the push button 102 is positioned at the level of the counter-holder 116. The constriction 112 is then inserted through the access opening 114 into the receiving opening 120 of the counter-holder 116.

In the course of assembly of the pressing tool 96 on the base support 44, the connecting element 94 engages with a receptacle 122 of the pressing tool 96 (see. FIG. 15 ). In addition, the contact surface 66 of the pressing tool 96 comes into abutment with the counter surface 68 of the base support 44th

In the absence of an exerted on the pressure surface 108 of the push button actuating force, the spring 106 relaxes, so that the push button 102 is transferred from the release position to the locking position. As a result, the extension 118 of the push button engages with the receiving opening 120 of the counter element 116, so that the pressing tool 96 is locked to the base support 44.

Another embodiment of a finishing device 10 is in the FIGS. 18 to 23 shown. The finishing device 10 comprises a second connecting device 60 with at least one, preferably two spring clips 124. These are fixed to the holding frame 86 of the base support 44 and have two spaced insertion ends 126 on.

The pressing tool 78, which is joined to the base support 44, has webs 128 which are insertable between the insertion ends 126 and press them apart.

When the pressing tool 78 is completely joined to the base support 44, the abutment surface 66 of the pressing tool 78 bears against the mating surface 68 of the holding frame 86. The connecting element 94 is joined to the receptacle 122 (cf. FIG. 21 ). Furthermore, the springs 124 are in latching engagement with the webs 128, cf. especially FIGS. 22 and 23 , To release the pressing tool 78 of the base support 44, it is sufficient to replace the pressing tool 78 opposite to the joining direction of the base support 44, overcoming the Holding force of the spring clips 124.

Claims (9)

1. Finishing device (10), comprising a pressing arm (18, 20) and a pressing tool (62, 78, 96) for pressing a finishing tool (36) against a workpiece (34), comprising a first connection apparatus (46) for connecting a base support (44) to the pressing arm (18, 20), a second connection apparatus (60) for connecting the base support (44) to the pressing tool (62, 78, 96), and an adjusting apparatus (58) for adjusting the orientation and/or position of the base support (44) on the pressing arm (18, 20), characterized in that the second connection apparatus (60) can be operated without tools and is designed as a latching connection, and in that the second connection apparatus (60) comprises a latching element (100), which assumes a locking position for locking the pressing tool (96) to the base support (44) when at rest and which can be transferred into a released position in which the pressing tool (96) can be detached from the base support (44).
2. Finishing device (10) according to claim 1, characterized in that the pressing tool (78) comprises a pressing belt (82) and a pressing-belt holder (80).
3. Finishing device (10) according to any of the preceding claims, characterized in that the pressing tool (62) comprises a rigid pressing portion (64).
4. Finishing device (10) according to claim 3, characterized in that the pressing portion (64) is shell-shaped or prism-shaped.
5. Finishing device (10) according to any of the preceding claims, characterized in that the first connection apparatus (46) comprises an inclination-adjustable screwed joint (48), which forms the adjusting apparatus (58) .
6. Finishing device (10) according to any of the preceding claims, characterized in that the base support (44) comprises an in particular U-shaped holding frame (86) for attachment to the pressing arm (18, 20).
7. Finishing device (10) according to claim 5, characterized in that the base support (44) comprises an in particular U-shaped inner frame (88), which is held on the holding frame (86) and is used to hold the pressing tool (96).
8. Finishing device (10) according to any of the preceding claims, characterized in that the latching element (100) can be transferred into the released position manually.
9. Method for setting up a finishing device (10) according to any of the preceding claims, comprising:

   - connecting a pressing tool (62) designed as a setup tool to the base support (44),

   - placing the pressing tool (62) onto a setup tool (30) or a workpiece (34) to be finished in order to align the base support (44) and determine the orientation and/or position of the base support (44),

   - attaching the base support to the pressing arm (18, 20),

   - removing the setup tool (62),

   - connecting a pressing tool (78) designed as a machine tool to the base support (44).

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