EP3969225A1

EP3969225A1 - Honing apparatus

Info

Publication number: EP3969225A1
Application number: EP20716080.5A
Authority: EP
Inventors: Theodor Hüttner; Martin Freitag; Oliver Bey; Ralf Denzinger; Denis Isba
Original assignee: Gehring Technologies GmbH and Co KG
Current assignee: Gehring Technologies GmbH and Co KG
Priority date: 2019-05-17
Filing date: 2020-03-19
Publication date: 2022-03-23
Also published as: US20220234162A1; WO2020233866A1; DE102019113032A1; CN113784819A

Abstract

The invention relates to an apparatus (10) for honing a bore (12) in a workpiece (14), having an apparatus base (18), having a turntable (20), arranged on the apparatus base, with a plurality of workpiece receptacles (32A, 32B, 32C, 32D), having at least one loading station (38) for loading and unloading from the workpiece receptacles, having at least one honing station (42) with a horizontal honing unit (46) and with a displacement device (58) for displacing the horizontal honing unit relative to the turntable (20), and having at least one tool magazine (74) for receiving a plurality of honing spindles (50), wherein the at least one tool magazine is fixed in an immovable manner at least with respect to movements in translation, wherein the at least one tool magazine is positioned or positionable with respect to the at least one honing station such that the at least one tool magazine takes up a tool-changing position, in which relative movements, necessary for a tool change, between the at least one tool magazine and the horizontal honing unit of the at least one honing station can be provided by displacement movements of the horizontal honing unit.

Description

Title: Device for honing

description

The present invention relates to a device for honing a bore in a workpiece according to the preamble of claim 1.

Such devices are known from the prior art and are used in particular for honing

Bearing alley bores and camshaft bores in

Crankcase usage.

A honing operation often requires several honing operations with different honing tools.

For example, with a first honing operation, a Correction of the diameter and shape accuracy of a bore are sought and with the second honing operation the surface is smoothed or otherwise topographically

machined, e.g. be designed with an intended (e.g. high or differently defined) roughness. For this purpose, devices of the type mentioned regularly have a tool changing device for

in particular automated changing of the honing tools. The tool changing device conventionally comprises a tool magazine for receiving a plurality of honing tools, the tool magazine being displaceable relative to a honing unit so that the tool magazine can approach the honing unit in order to replace a honing tool. It is possible that a gripper unit with a gripper arm

is provided, which feeds the honing tool from the honing unit to the tool magazine or vice versa. The known solutions are complex, which regularly leads to high manufacturing costs and increased effort for the

Commissioning the device leads.

The object of the present invention is to provide a tool change in a device of the initially mentioned

to simplify the type mentioned. In particular, a structurally simple and inexpensive configuration of the device is desirable.

This object is achieved according to the invention by a device according to claim 1. The device according to the invention is used for honing a bore in a workpiece. In particular, the device according to the invention is a device for

Honing a bearing aisle bore in one

Crankcase. In the context of the invention, the bearing lane bore is in particular that bore in a

Understood crankcase that is used to store a

Crankshaft is used in the crankcase.

The device comprises a device base, which is preferably of rectangular design when viewed in a direction orthogonal to the device base. In particular, a longitudinal and transverse extension of the

Device base dimensioned in such a way that the device can be transported on conventional means of transport, in particular on a truck, which means that the

Facilitates device to a destination.

The device further comprises one on the

Device base arranged turntable. In particular, the turntable is designed as a lifting turntable. The turntable is rotatable about a vertical turntable axis and has a plurality of workpiece holders. The workpiece holders are arranged in such a way that a workpiece held in a workpiece holder can be rotated by the

Turntables around the turntable axis to different

Workstations of the device is transportable.

The workpiece holders are preferably offset from one another along a circumference around the turntable axis arranged. In particular, four workpiece holders are provided, which are arranged offset from one another at an angle of 90 °. It is also advantageous if the workpiece holders are arranged with, in particular, the same radial spacing from the rotary table axis.

The device further comprises at least one loading station for loading and unloading the workpiece receptacles, the at least one loading station being a work station of the

Device forms. With loading and unloading of the

Workpiece holders are meant, in particular, to equip the workpiece holders with workpieces and to remove workpieces from the workpiece holders.

The device further comprises a honing station with a horizontal honing unit and with a displacement device for displacing the horizontal honing unit relative to the turntable. The at least one honing station forms a further work station of the device. A honing spindle with a honing tool with honing stones is coupled or can be coupled to the horizontal honing unit in such a way that the honing spindle can be rotated about a horizontal spindle axis and moved back and forth in a direction parallel to the spindle axis. In this respect, the superposition of translational and rotational relative movement between the workpiece and the

Honing tool are provided. The device preferably comprises a spindle drive for driving a

Rotational movement of the honing spindle around the spindle axis. The reciprocating movement of the honing spindle is preferably through a displacement of the horizontal honing unit is provided by means of the displacement device.

The device further comprises a tool magazine for receiving a plurality of honing spindles. Thus can

Honing spindles with differently designed

Honing tools for different honing operations

be held up. For an automated

Tool change, that is to say an automated exchange of a honing spindle coupled to the horizontal honing unit, is further preferred if the honing spindles each have an interface for automatic change, for example an HSK interface. This allows for one

The time required to change tools can be reduced, which has a positive effect on productivity.

The at least one tool magazine is immobile in relation to the at least with regard to translational movements

Fixture base set. In this respect, the at least one tool magazine is fixed in such a way that at least translational movements of the at least one

Tool magazine are not possible. In other words, the tool magazine has no translational

Degrees of freedom, but is rigid in this regard

attached to the fixture base. The in that

Honing tools accommodated in the tool magazine are then in a fixed and fixed tool magazine

held position. The at least one tool magazine is positioned in relation to the at least one honing station or

positionable so that the at least one tool magazine assumes a tool change position in which the relative movements required for a tool change between the at least one tool magazine and the horizontal honing unit of the at least one honing station - for example, for depositing a honing tool in the at least one

Tool magazine and / or for receiving a honing tool from the tool magazine - can be provided by displacement movements of the horizontal honing unit by means of the displacement device. In this respect, a

Tool change takes place with the tool magazine stationary. So it is not necessary to have at least one

Tool magazine with an additional

Equip displacement device (e.g. NC axes) to enable automated tool change.

A device according to the invention is structurally simple and inexpensive (no additional

Displacement device for displacing the at least one tool magazine). Furthermore, a

The device according to the invention is characterized by a comparatively fast operational readiness, since there is no need to set up such a displacement device for displacing the at least one tool magazine (for example, calibrating the NC axes). In addition, the outlay for maintenance is reduced in the case of a device according to the invention, since in comparison to that known from the prior art

Devices less moving components are available. The at least one tool magazine is expediently positioned in the tool change position in such a way that a longitudinal axis of one accommodated in the tool magazine

Honing tool is aligned essentially parallel to the spindle axis of the horizontal honing unit. This enables a particularly simple and quick tool change, since the honing tools in the tool magazine already have the same orientation as in one of the

Have horizontal honing unit coupled state. A pivoting of the translationally already determined

Magazine can be omitted accordingly. In this respect, in particular no tilting or pivoting movement of the horizontal honing unit is required for picking up or putting down a honing tool. The honing tools are preferably arranged one above the other in the tool magazine in the vertical direction, which promotes a particularly space-saving arrangement in a horizontal plane.

In principle, it is possible that at least one

Tool magazine is fixed immovably with respect to the device base, so that both translational movements and rotational movements of the at least one

Tool magazine are not possible. In other words, the tool magazine is completely rigid with respect to the

Device base arranged. At least one

However, the tool magazine can be connected to the device base via a swivel joint, a swivel axis of the swivel joint being oriented in such a way that the

at least one tool magazine between the Tool change position and a maintenance position

is pivotable, at least one

Tool magazine in the maintenance position in a

Viewing direction orthogonally seen on the device base (in plan view) is positioned at least in sections outside the device base. In the maintenance position, free access to the honing tools accommodated in the at least one tool magazine is then made possible, so that the honing tools can be conveniently exchanged. The pivot axis can be oriented horizontally. However, it is preferred if the pivot axis is oriented vertically.

It is also preferred if the horizontal honing unit can be displaced in three spatial directions by means of the displacement direction. Preferably comprises

Displacement device three, in particular orthogonally oriented, NC axes. A first spatial direction is aligned parallel to the spindle axis and the other two spatial directions are orthogonal

to each other and span a plane which leads to the

Spindle axis or first spatial direction is oriented orthogonally. This allows a position of the horizontal honing unit, in particular a position of the

Horizontal honing unit coupled honing tool, can be easily adapted to an exact location of a hole to be machined in a workpiece. In this respect, the device can be set up particularly quickly. In particular, any deviations in the center between the honing tool and the bore can be easily eliminated corrected, which favors precise machining. In addition, such a configuration makes it possible to machine different types of workpiece (with different hole positions) with the same device, in particular without the need for manual equipment. For this purpose, it is conceivable, for example, that the spatial coordinates of a hole to be machined are part of a data record that is stored in a control device of the device for the machining of a respective workpiece.

The tool magazine can also be approached in a simple manner by means of the horizontal honing unit via the displaceability of the horizontal honing unit by means of the displacement direction.

The workpiece holders can be arranged in relation to the rotary table in such a way that a bore axis of a bore provided for honing by the horizontal honing unit in a workpiece held in a workpiece holder is oriented essentially tangentially to the rotary table. In the context of the invention, “oriented essentially tangentially to the turntable” means “essentially tangential to the circular path on which the

Workpiece receptacles of the turntable are moved around the turntable axis during the rotary movement, that is to say, oriented.

In this respect, the workpiece holders are positioned in such a way that a vertical plane containing the bore axis does not contain the turntable axis of the turntable. The workpiece holders are preferably over one or more

Cantilever arranged on the turntable, in particular such that the workpiece receptacles from the turntable radially are arranged spaced apart, in particular at equal radial intervals. This promotes free access to the bore for honing.

It is also possible if the horizontal honing unit is positioned or positionable in relation to the turntable in such a way that the spindle axis is oriented essentially tangentially to the turntable, that is to say essentially tangential to the circular path on which the workpiece mounts of the

Turntables are moved during the rotary movement, is oriented. This enables a particularly compact design of the device, since the horizontal honing unit can be arranged “next to” the turntable.

In the context of an alternative possible embodiment, the workpiece receptacles are arranged with respect to the turntable in such a way that a bore axis is one to the

Honing is oriented substantially radially to the rotary table axis by the horizontal honing unit provided bore in a workpiece received in a workpiece holder. In this respect, the workpiece holders are positioned in such a way that one containing the bore axis

Vertical plane contains the turntable axis of the turntable. The horizontal honing unit is then preferably positioned such that the spindle axis is oriented essentially radially to the rotary table axis. A radial one

Arrangement of the workpiece holders makes it possible to additionally provide at least one vertical honing unit for honing cylinder bores in a crankcase, the at least one vertical honing unit above the Turntable can be attached to one or more carriages and can then serve two workpiece holders.

In particular, the device has at least one first measuring station with at least one first measuring unit for measuring cylinder bores in a crankcase, the at least one first measuring station forming at least one work station of the device. The at least one first measuring unit is used in particular to remeasure cylinder bores, for example which have previously been honed on a separate honing machine. Preferably, the comprises at least a first

Measuring unit at least one measuring spindle which can be inserted into a bore to be measured and has a measuring head for measuring the bore (e.g. with regard to diameter,

Shape accuracy, surface roughness, etc.). The at least one first measuring unit is in particular arranged in such a way that the at least one measuring spindle extends essentially vertically. Then a measurement of the

Cylinder bores are made without any

Change of position of the workpiece between the at least one honing station and the at least one first

Measuring station required.

It is also possible if the device has at least one second measuring station with at least one second measuring unit, the at least one second measuring unit being designed to measure the bore that is provided for honing by the horizontal honing unit (for example with regard to Diameter, shape accuracy, Surface roughness, etc.). At least one second

The measuring station is another workstation of the

Contraption. In particular, the at least one second measuring unit is a measuring unit for measuring a

Bearing alley bore in a crankcase.

The at least one second measuring unit can comprise at least one measuring spindle which can be inserted into the bore to be measured and has a measuring head for measuring the bore. It is also possible if the at least one second measuring station has a displacement device for displacing the at least one second measuring unit relative to the turntable, in particular in three spatial directions. It is also advantageous if the at least one second measuring unit is positioned or positionable such that a longitudinal extension of the at least one second measuring unit, in particular a longitudinal extension of the at least one measuring spindle, is oriented essentially tangentially to the turntable. Then a measurement of the

Aisle drilling can be done without it being a

Change of position of the workpiece between the honing station and the second measuring station is required.

Preferably there is at least one second

Measuring station arranged at least one measuring spindle magazine for receiving a plurality of measuring spindles for the at least one second measuring unit. This enables

To hold measuring spindles with differently designed measuring heads for different measuring operations. The at least one measuring spindle magazine is preferably of this type positioned or positionable so that a longitudinal axis of a measuring spindle accommodated in the measuring spindle magazine is oriented essentially tangentially to the rotary table.

It is also preferred if the at least one charging station has at least one charging unit for loading and unloading the

Has workpiece holders. The loading and unloading of the workpiece holders can hereby be facilitated. The loading unit can be operated manually. However, it is preferred if the loading unit can be operated mechanically.

The workpiece holders can then be loaded and unloaded automatically. At least one

Loading unit can, for example, be a

Portal robot (gantry), a roller conveyor, a robot or similar act. In particular, there is a direct

Loading of the workpiece holders from above.

In principle, every functional unit (horizontal honing unit, loading unit, if necessary first measuring unit, if necessary

second measuring unit) have their own base (machine bed). These individual parts can then be connected to form a device base. It is preferred, however, if the at least one horizontal honing unit and / or the at least one first measuring unit and / or the at least one second measuring unit and / or the at least one loading unit are / is arranged on the device base, the device base being in one piece.

In particular, all functional units are on the

one-piece device base arranged. The

The device base thus forms a common basis for all functional units. One such arrangement is

particularly stable, so that relative positions between the functional units can be produced and maintained particularly precisely. In addition, a particularly compact design of the device is made possible. In particular, such an arrangement makes it possible to use the device as a preassembled structural unit on conventional means of transport

(e.g. truck) to a destination.

In addition, the time required for on-site commissioning can be reduced since there is no need to assemble and align the functional units on site.

The device preferably has at least one

Control cabinet (e.g. to accommodate

Electronic devices such as control devices,

Safety devices, power supply devices, etc.) and this at least one switch cabinet is arranged on the device base. It is particularly preferred if the at least one switchgear cabinet is permanently connected to the device base. Such a structure is particularly compact. In addition, the assembly and

Commissioning of the device required time can be reduced, since a complex laying of cables between the device and a separate from the device

provided, in particular spatially separated,

Control cabinet is omitted. The at least one switchgear cabinet preferably forms one at least in sections

Housing wall of one of the workstations delimiting

Device housing. It is also preferred if at least one

Workpiece control device for checking the size and / or position and / or alignment of a hole to be honed in a workpiece is provided. Such

Workpiece control device comprises at least one arranged on a respective living tool

Workpiece control element, which is designed to check when the honing tool moves into the bore whether the bore in the workpiece has a sufficient bore width and / or to indicate a positioning or

Check for misalignment of the hole in the workpiece. Options for designing the

Workpiece control devices can be similar or identical to those solutions that are described in WO 2019/020779 A1 - the disclosure content of which is made part of the content of the present description by reference.

Further features, possible applications and advantages of the invention emerge from the following description of exemplary embodiments of the invention, which are based on the

Drawings are explained, wherein the features can be important for the invention both on their own and in different combinations, without explicit reference being made to this again. Show it:

Figure 1 is a sketched representation of an embodiment of a device according to the invention in a first perspective view; FIG. 2 shows a sketched representation of the device from FIG. 1 in a second perspective

View; and

Figure 3 is a simplified sketched representation of the

Device from Figure 1 in a plan view.

In the following figures, corresponding components and elements have the same reference symbols. The better one

Due to clarity are not in all figures

all reference symbols are reproduced.

In the figures, a device is shown which is designated as a whole by the reference numeral 10. The device 10 is used for honing a bore 12 in a workpiece 14, the workpiece 14 being formed by a crankcase 14 in the present example and the bore 12 being formed by a bearing lane bore 12 in the crankcase 14 (see FIG. 3). The

Crankcase 14 is exemplified as an engine block

and has, in addition to the bearing alley bore 12, four orthogonal to the bearing alley bore 12

aligned cylinder bores 16 (see FIG. 3).

The figures also show a coordinate system which has axes (X, Y, Z) that are orthogonal to one another.

The device 10 comprises a device base 18, which in a viewing direction orthogonally to the

Device base 18 seen by way of example and preferably in Is essentially rectangular (see FIG. 3). An extension of the device base 18 along a longitudinal axis (in the figures along the X-axis)

in this respect greater than an extension of the device base XX along a transverse axis (in the figures along the Y axis).

The device 10 further comprises a turntable 20, which is seen in a longitudinal direction 22 (in the figures in the X direction) approximately in the front third and in a transverse direction 24 (in the figures in the Y direction) approximately in the middle of the device base 18 is arranged.

The turntable 20 is by means of a rotary drive 26 arranged below the turntable 20 about a vertical, parallel to the Z axis of the coordinate system shown

Turntable axis 28 rotatable. The turntable 20 is

exemplary and preferably designed as a lifting-turntable, which by means of a lifting drive 30 along the

Turntable axis 28 is displaceable.

On the turntable 20 there are four workpiece holders 32A, 32B, 32C, 32D for receiving one workpiece 14 each

arranged. The workpiece holders 32A, 32B, 32C, 32D are arranged offset to one another along a circumference around the turntable axis 28 at an angle of 90 ° (cf. FIG. 3). In the present example, the

Workpiece receptacles 32A, 32B, 32C, 32D are each fastened to the upper side of the turntable 20 via a bracket 34 and are arranged radially spaced apart from the turntable 20 at the same distance (see FIG. 1). In the embodiment of the device 10 shown in the figures, the workpiece holders 32A, 32B, 32C, 32D are arranged in relation to the turntable 20 such that a bore axis 36 of the bearing lane bore 12 of a crankcase 14 received in a workpiece holder 32A, 32B, 32C, 32D essentially tangential to the

Circular path on which the workpiece holders 32A, 32B, 32C,

32D of the turntable 20 during a rotary movement of the

Turntable 20 are moved about the turntable axis 28, is aligned (see FIG. 3).

In the case of embodiments not shown, it is also possible that the workpiece holders 32A, 32B, 32C, 32D are arranged in relation to the rotary table 20 in such a way that a bore axis 36 of the bearing lane bore 12 of a crankcase 14 received in a workpiece holder 32A, 32B, 32C, 32D is aligned essentially radially to the circular path on which the workpiece holders of the turntable are moved when the turntable 20 rotates about the turntable axis 28.

The turntable 20 serves as a transfer unit within the device 10 and enables a workpiece holder 32A, 32B, 32C, 32D to be received by a rotary movement of the turntable 20 about the turntable axis 28

Workpiece 14 to various workstations of the

Device 10 to transport. In the present

Example with four workpiece holders 32A, 32B, 32C, 32D offset from one another at an angle of 90 ° A total of four work stations can be approached by workpieces 14 at the same time.

A first work station is formed by a loading station 38 for loading and unloading the workpiece receptacles 32A, 32B, 32C, 32D. The charging station 38 is in the area of in

Longitudinal direction 22 front transverse side 40 of the

Device base 18 arranged. The charging station 38 preferably has a motorized charging unit (not shown), for example in the form of a gantry robot. As can be seen from Figures 1 and 2, a workpiece holder 32A, 32B, 32C, 32D is accessible from above in the loading station 38, so that the loading and unloading of the

Workpiece receptacles 32A, 32B, 32C, 32D can be done from above (in the figures in the Z direction).

By rotating the turntable 20 by 90 ° in

A workpiece 14 received in a tool holder 32A, 32B, 32C, 32D can be transported clockwise from the loading station 38 to a honing station 42. The honing station 42 is in the area of a first longitudinal side 44 of the

Device base 18 is arranged and forms a second work station of the device 10.

The honing station 42 has a horizontal honing unit 46 for honing the bearing lane bore 12 of the crankcase 14. The horizontal honing unit 46 includes a

Spindle box 48 to which a honing tool 50 with honing stones is detachably coupled in a manner known per se (see FIG. 2). The honing tool 50 is on the headstock 48 µm a horizontal spindle axis 52 rotatably mounted. A spindle drive 54 is provided to drive a rotary movement of the honing tool 50 about the spindle axis 52.

As can be seen from FIG. 3, the horizontal honing unit 46 is positioned in relation to the turntable 20 such that the spindle axis 52, or a longitudinal axis 56 of a honing tool 50 coupled to the horizontal honing unit 46, is oriented essentially tangentially to the turntable 20 is. In this respect, the spindle axis 52 or the longitudinal axis 56 is parallel to the bore axis 36 of the bearing lane bore 12 in a workpiece holder 32A, 32B, 32C, 32D

accommodated crankcase 14 aligned when the crankcase 14 is in the honing station 42 (in Figure 3 in the workpiece holder 32C).

To move the horizontal honing unit 46 relative to the turntable 20, or relative to one in a

Workpiece holder 32A, 32B, 32C, 32D recorded

Workpiece 14, the device 10 also has a

Displacement device 58.

As can be seen from FIG. 1, the headstock 48 is mounted on a carrier 60 so as to be displaceable along a vertical axis (along the Z-axis in the figures). A motor 62 is provided for driving a displacement movement of the headstock 48 along the vertical axis.

The carrier 60 is on a carriage 64 along the

Longitudinal axis of the device 10 (in the figures along the X-axis) mounted displaceably. These are on the

Carriage 64 has two parallel guide rails 66 mounted on which the carrier 60 runs (see FIG. 3). A motor 68 is provided for driving a displacement movement of the carrier 60 along the longitudinal axis. By a

Displacement movement of the carrier 60 along the longitudinal axis is, in particular, an entry movement of the honing tool 50 into the bore 12 to be honed as well as that for the

Honing causes characteristic back and forth movement of the honing tool 50.

The slide 64 is in turn mounted displaceably on the device base 18 along the transverse axis (in the figures along the Y axis). For this purpose are on the

Device base 18 mounted guide rails 70 on which the carriage 64 runs (see FIG. 1). To drive a displacement movement of the carriage 64 along the

A motor 72 is also provided on the transverse axis.

The device 10 also has a tool magazine 74 for receiving a plurality of honing tools 50. The tool magazine 74 has a plurality of honing tool receptacles 76 for receiving one honing tool 50 each (see FIG. 2). The honing tool receptacles 76 are preferably arranged one above the other in the tool magazine 74 in the vertical direction.

In the present example, the tool magazine 74 is arranged adjacent to the horizontal honing unit 46 in the region of the longitudinal side 44 of the device base 18. The The tool magazine 74 is connected to the device base 18 via a pivot joint 78, a pivot axis 80 of the pivot joint 78 preferably being oriented vertically. The tool magazine 74 is between a tool change position shown in the figures and a maintenance position, not shown, in which the

Starting from the tool change position shown for example in FIG. 3, the tool magazine 74 can be pivoted clockwise, preferably by approximately 90 °, about the pivot axis 80. Translational movements of the

Tool magazine 74, however, are blocked.

This is in the tool change position (see Figure 3)

Tool magazine 74 positioned in such a way that the relative movements between tool magazine 74 and horizontal honing unit 46 required for a tool change can be provided by displacement movements of horizontal honing unit 46 by means of displacement device 58. For an exchange of a honing tool 50, the horizontal honing unit 46 can, for example, a

Approach the honing tool holder 76 and place a honing tool 50 in the honing tool holder 76 or pick up a honing tool 50 from the honing tool holder 76. In the

Tool change position, the tool magazine 74 is positioned such that a longitudinal axis 82 in a

Honing tool holder 76 received honing tool 50 in

Is aligned essentially parallel to the spindle axis 52 (see FIG. 3). In the maintenance position, the tool magazine 74 is positioned such that the tool magazine 74 is in a

Looking orthogonally onto the device base 18, it is positioned in sections outside of the device base 18. This enables free access to the honing tool receptacles 76, so that in the

Honing tool receptacles 76 received honing tools 50 can be exchanged in a simple manner.

Starting from the honing station 42, a

Workpiece holder 32A, 32B, 32C, 32D recorded

Workpiece 14 can be transported by a further rotation of turntable 20 by 90 ° clockwise to a first measuring station 84, which forms a third work station of device 10.

The first measuring station 84 has a first measuring unit 86 for measuring the cylinder bores 16 in the crankcase 14. The first measuring unit 86 is held on a slide 88, which is mounted on an arm 90 of a crossbeam 92 so as to be displaceable along the transverse axis (along the Y axis in the figures). The cross member 92 is on two support columns 94 with a vertical distance above the

Turntable 20 is held and overlaps turntable 20 in transverse direction 24. In this respect, first measuring unit 86 is held at a vertical distance above turntable 20.

The first measuring unit 86 has two measuring spindles 96, each with a measuring head for measuring the cylinder bores 16. The measuring spindles 96 of the first measuring unit 86 extend essentially vertically. To move a measuring spindle 96 into a cylinder bore 16, each measuring spindle 96 is via a motor 98 along a

Vertical axis (in the figures along the Z axis)

movable. By shifting the first measuring unit 86 along the transverse axis, cylinder bores 16 arranged next to one another can be approached one after the other.

Starting from the first measuring station 84, a workpiece 14 held in a tool holder 32A, 32B, 32C, 32D can be moved to a second measuring station 100 by a further clockwise rotation of the turntable 20 by 90 °

which forms a fourth work station of the device 10.

In the present example, the second measuring station 100 is arranged in the area of the longitudinal side 102 of the device base 18 opposite the honing station 42 and has a second measuring unit 104 for measuring the bore 12 (bearing lane bore 12) provided for honing by the horizontal honing unit 46.

The second measurement unit 104 has one or more

Measuring spindles 106 each with a measuring head 108, the second measuring unit 104 being positioned such that a longitudinal axis 110 of a respective measuring spindle 106 is oriented essentially tangentially to the rotary table 20 (cf. FIG. 3). In this respect, the longitudinal axis 110 of a respective measuring spindle 106 is parallel to the bore axis 36 of the bearing lane bore 12 of the crankcase 14 aligned when the crankcase 14 is in the second measuring station 100 (in FIG. 3 in the

Workpiece holder 32A).

The second measuring unit 104 is by means of a

Displacement device 112 in three spatial directions

relocatable. Preferably comprises

Displacement device 112 has three NC axes oriented orthogonally to one another, a first axis being oriented parallel to the longitudinal axis 110 of the measuring spindle 106 and serving to introduce the measuring spindle 106 into a bore 12 to be measured. The other two axes span a plane which is oriented orthogonally to the longitudinal axis 110 of the measuring spindle 106 and serve to align the measuring spindle 106 relative to a position of the bore 12.

At the second measuring station 100 there is also a

Measuring spindle magazine 114 is provided to accommodate several measuring spindles 106. The measuring spindle magazine 114 is arranged on the device base 18 and positioned such that it is necessary for a measuring spindle change

Relative movements between the second measuring unit 104 and the measuring spindle magazine 114 can be provided by displacement movements of the second measuring unit 104 by means of the displacement device 112 (see FIG. 3). The

Measuring spindle magazine 114 is positioned in such a way that a longitudinal axis is in the measuring spindle magazine 114

recorded measuring spindle 106 is aligned essentially tangentially to the rotary table 20 (see FIG. 3). The device 10 further comprises several switch cabinets 116 for accommodating electronic devices (e.g.

Control devices, safety devices,

Power supply devices, etc.) · The control cabinets 116 are in the present example at the

Loading station 38 opposite transverse side 118 of the

Device base 18 arranged and with the

Device base 18 firmly connected. The switch cabinets 116 preferably form in sections the wall of a device housing (not shown) which delimits the workstations.

The device 10 further comprises an operating unit 120 in the form of an operating terminal for operating the device 10.

Claims

1. Device (10) for honing a bore (12) in a workpiece (14) which is aligned horizontally during the machining, in particular for honing a bearing lane bore (12) in a crankcase (14), comprising:

- a device base (18);

- A turntable (20) arranged on the device base (18) and having a plurality of

Workpiece holders (32A, 32B, 32C, 32D), the turntable (20) being rotatable about a vertical turntable axis (28) and the workpiece holders (32A, 32B, 32C, 32D) being arranged in such a way that a workpiece holder (32A , 32B, 32C,

32D) picked up workpiece (14) by a

Rotary movement of the turntable (20) around the

Turntable axis (28) to different

Workstations of the device (10)

is transportable;

- At least one charging station (38) for loading and

Unloading the workpiece holders (32A, 32B, 32C,

32D), wherein the at least one charging station (38) forms a work station of the device (10);

- At least one honing station (42) with one

Horizontal honing unit (46) and with a

Displacement device (58) for displacing the horizontal honing unit (46) relative to the turntable (20), the at least one Honing station (42) forms a work station of the device (10) and wherein to the

Horizontal honing unit (46) a honing tool (50) with cutting means is coupled or can be coupled in such a way that the honing tool (50) is rotatable about a horizontal spindle axis (52) and can be moved back and forth in a direction parallel to the spindle axis (52);

- At least one tool magazine (74) for receiving a plurality of honing tools (50);

characterized in that

the at least one tool magazine (74) is fixed immovably at least with regard to translational movements, the at least one

The tool magazine (74) is positioned in this way or in relation to the at least one honing station (42)

it can be positioned that the at least one

Tool magazine (74) assumes a tool change position in which for a tool change

required relative movements between the

at least one tool magazine (74) and the

Horizontal honing unit (46) of the at least one

Honing station (42) by displacement movements of the

Horizontal honing unit (46) by means of a

Displacement device (58) can be provided.

2. Device (10) according to claim 1, characterized

marked that the at least one

Tool magazine (74) in the tool change position is positioned such that a longitudinal axis (82) is received in the tool magazine (74)

Honing tool (50) is aligned essentially parallel to the spindle axis (52) of the horizontal honing unit (46).

3. Device (10) according to one of the preceding

Claims, characterized in that the

at least one tool magazine (74) via a

The pivot joint (78) is connected to the device base (18), a pivot axis (80) of the pivot joint (78) being oriented in such a way that the at least one tool magazine (74) can be pivoted between the tool change position and a maintenance position, the at least one

Tool magazine (74) in the maintenance position in a direction of view orthogonally onto the device base (18), at least in sections outside the

Device base (18) is positioned.

4. Device (10) according to one of the preceding

Claims, characterized in that the

Horizontal honing unit (46) by means of the

Displacement device (58) can be displaced in three spatial directions.

5. Device (10) according to one of the preceding

Claims, characterized in that the

Workpiece receptacles (32A, 32B, 32C, 32D) are arranged in relation to the turntable (20) in such a way that a bore axis (36) is one for honing through the Horizontal honing unit (46) provided bore (12) in a workpiece (14) held in a workpiece holder (32A, 32B, 32C, 32D), in particular a bore axis (36) of a bearing lane bore (12) in a workpiece holder (32A, 32B, 32C, 32D) accommodated crankcase (14), is oriented essentially tangentially to the turntable (20).

6. Device (10) according to one of claims 1 to 4, characterized in that the workpiece holders (32A, 32B, 32C, 32D) are arranged with respect to the turntable (20) such that a bore axis (36) is one for honing through the horizontal honing unit (46) provided bore (12) in a workpiece holder (32A, 32B, 32C, 32D)

recorded workpiece (14), in particular one

Bore axis (36) of a bearing lane bore (12) in a crankcase (14) accommodated in a workpiece holder (32A, 32B, 32C, 32D), to the

Turntable axis (28) is oriented substantially radially.

7. Device (10) according to one of the preceding

Claims, characterized in that the

Device (10) at least one first measuring station

(84) with at least one first measuring unit (86) for measuring cylinder bores (16) in one

Crankcase (14), wherein the at least one first measuring station (84) at least one

Forms work station of the device (10). 8. Device (10) according to one of the preceding

Claims, characterized in that the

Device (10) at least one second measuring station

(100) with at least one second measuring unit (104) for measuring the bore (12), in particular for measuring the bearing alley bore (12) which is used for

Honing is provided by the horizontal honing unit (46), wherein the at least one second measuring station (100) has at least one

Forms the work station of the device (10),

in particular wherein the at least one second

Measuring unit (104) positioned or

it can be positioned so that a longitudinal extension of the at least one second measuring unit (104) is oriented essentially tangentially to the rotary table (20).

9. Device (10) according to one of the preceding

Claims, characterized in that the

at least one loading station (38) at least one loading unit for loading and unloading the

Has workpiece holders (32A, 32B, 32C, 32D).

10. Device (10) according to one of the preceding

Claims, characterized in that the

at least one horizontal honing unit (46) and / or the at least one first measuring unit (86) and / or the at least one second measuring unit (104) and / or the at least one loading unit, in particular the at least one horizontal honing unit (46) and the at least one first measuring unit (86) and the at least one second measuring unit (104) and the at least one loading and unloading unit on the

Device base (18) are arranged / is.

11. Device (10) according to one of the preceding

Claims, characterized in that the

The device (10) has at least one switch cabinet (116), the at least one switch cabinet (116) being arranged on the device base (18), in particular being firmly connected to the device base (18).

12. Device (10) according to one of the preceding

Claims, characterized in that at least one workpiece control device for checking the size and / or position and / or alignment of a bore (12) to be honed in a workpiece (14)

is provided, the at least one

At least one workpiece control device arranged on a respective honing tool

Comprises workpiece control element, which is designed to check when the honing tool moves into the bore (12) whether the bore (12) in the workpiece (14) has a sufficient bore width and / or to check for a positioning or alignment error of the bore (12) in the workpiece

(14) to be checked.