DE102020134461A1 - finishing system - Google Patents

Abstract

The invention relates to a finishing system (10), comprising a finishing device (12) and a workpiece (14) to be finished, the finishing device having: a workpiece receiving device (18) and a rotary drive, a first finishing tool (26) and a first oscillating drive, a second finishing tool (38) and a second oscillating drive, the workpiece (14) having: a peripheral surface (34) extending around the workpiece axis of rotation (24) and a second workpiece surface extending in a plane which intersects the workpiece axis of rotation, wherein the peripheral surface and the second workpiece surface adjoin one another in a transition area (50), and wherein a first working area (66) of the first finishing tool is spatially offset from a second working area (68) of the second finishing tool.

Description

• - eine Werkstückaufnahmeeinrichtung zur Aufnahme des finishend zu bearbeitenden Werkstücks und einen Rotationsantrieb zum Antrieb des Werkstücks um eine Werkstückrotationsachse,
• - ein erstes Finishwerkzeug zur finishenden Bearbeitung einer ersten Werkstückoberfläche des Werkstücks und einen ersten Oszillationsantrieb zum Antrieb des ersten Finishwerkzeugs oder des Werkstücks entlang einer ersten Oszillationsachse,
• - ein zweites Finishwerkzeug zur finishenden Bearbeitung einer zweiten Werkstückoberfläche des Werkstücks und einen zweiten Oszillationsantrieb zum Antrieb des zweiten Finishwerkzeugs oder des Werkstücks entlang einer zweiten Oszillationsachse, wobei das Werkstück aufweist:
  • die erste Werkstückoberfläche, welche als sich um die Werkstückrotationsachse herum erstreckende Umfangsfläche ausgebildet ist, und die zweite Werkstückoberfläche, die sich in einer Ebene erstreckt, welche die Werkstückrotationsachse schneidet.

The invention relates to a finishing system according to DE 10 2015 216 357 A1 , comprising a finishing device and a workpiece to be finished, wherein the finishing device has:

• - a workpiece receiving device for receiving the workpiece to be finished and a rotary drive for driving the workpiece about a workpiece axis of rotation,
• - a first finishing tool for finishing machining a first workpiece surface of the workpiece and a first oscillation drive for driving the first finishing tool or the workpiece along a first oscillation axis,
• - a second finishing tool for finishing machining a second workpiece surface of the workpiece and a second oscillating drive for driving the second finishing tool or the workpiece along a second oscillation axis, the workpiece having:
  • the first workpiece surface, which is designed as a peripheral surface extending around the workpiece axis of rotation, and the second workpiece surface, which extends in a plane which intersects the workpiece axis of rotation.

The present invention is based on the object of further developing the known finishing system in such a way that it enables flexible finishing of differently shaped workpieces.

According to the invention, this object is achieved in that the peripheral surface and the second workpiece surface adjoin one another in a transition area, and that a first working area of the first finishing tool is spatially offset from a second working area of the second finishing tool.

In the finishing system according to the invention, it is possible for the peripheral surface and the second workpiece surface to be finished at the same time, namely by their own finishing tools, which are assigned respective work areas that are spatially offset from one another. The transition region between the peripheral surface and the second workpiece surface is in particular an annular end region of the peripheral surface which transitions radially outwards or radially inwards into the second workpiece surface relative to the axis of rotation of the workpiece. This transition area can have a sharp-edged or rounded cross-section.

It is preferred that the first working area extends beyond a width of the peripheral surface measured parallel to the axis of rotation of the workpiece and/or that the second working area extends beyond a radial boundary of the second workpiece surface. This enables the finishing machining of the workpiece beyond the peripheral surface and/or beyond the second workpiece surface into the transition area or also beyond the transition area. This ensures that the peripheral surface and/or the second workpiece surface can be finished over its entire extent. In this case, the transition area itself is preferably also finished.

It is preferably provided that an effective range of the first finishing tool is limited to a maximum of 180° of the circumference of the circumferential surface. In this way, a space is provided outside of this circumferential angle, which can be used as a “second work area” for arranging the second finishing tool.

For increased material removal, it is preferred that the first finishing tool and the first workpiece surface are in contact with one another in a shell-shaped contact area over a partial circumference of the circumference of the circumferential surface. It is also possible that the contact area between the first finishing tool and the first workpiece surface, i.e. the peripheral surface of the workpiece, is linear contact, for example using a finishing belt that is pressed against the first workpiece surface by means of a pressure roller.

In particular, it is preferred that the first finishing tool is a finishing belt and/or that the second finishing tool is a finishing belt.

It is also possible that one of the finishing tools or both finishing tools are each designed in the form of a finishing stone.

The second finishing tool, in particular in the form of a finishing belt, is preferably applied against the second workpiece surface by means of a pressure roller. This enables a spatially limited, linear contact of the second finishing tool with the second workpiece surface, with a comparatively compact second work area being sufficient for arranging the finishing tool and the pressure roller.

The finishing system is particularly suitable for a workpiece in the form of a roller bearing body, with the second workpiece surface being an end face of the roller bearing body. The peripheral surface of this roller bearing body is, for example, cylindrical, conical or barrel-shaped.

Preferably, the workpiece can also be a shaft, with the second workpiece surface being an axial bearing surface or a thrust bearing surface of the shaft. The first workpiece surface to be machined by the finishing system is a peripheral surface of this shaft, which is arranged immediately adjacent to the thrust bearing surface or thrust bearing surface. This peripheral surface can be a plain bearing surface, for example a main bearing or connecting rod bearing of a crankshaft or a main bearing or a cam surface of a camshaft.

The workpiece can also be a pump gear wheel, with the second workpiece surface being a gear face. The first workpiece surface of the pump gear is a peripheral surface directly adjoining the toothing end face, which is used, for example, to mount the pump gear in a pump arrangement.

A further advantageous embodiment of the invention is specified in dependent claim 10 . With this system, the simultaneous processing of three workpiece surfaces of the workpiece is possible. The third workpiece surface is, for example, a (the second) end face of a roller bearing body, a further axial bearing surface or fitted bearing surface of a shaft or a (further) toothed end face of a pump gear.

In a preferred embodiment, the second finishing tool is held on a tool holder which can be moved along a traversing axis parallel to the axis of rotation of the workpiece. This enables the finishing tool to be advanced outside of a peripheral surface of the workpiece in the direction of the second workpiece surface.

As an alternative or in addition to this, it is preferred that the second finishing tool is held on a tool holder which can be moved along a travel axis perpendicular to the axis of rotation of the workpiece. This enables the delivery of the second finishing tool in the radial direction in relation to the axis of rotation of the workpiece.

A combination of the two above-mentioned traversing axes is advantageously provided by a compound slide arrangement.

It is also preferred if the second finishing tool is mounted on the tool holder such that it can be tilted about a tilting axis, the tilting axis running perpendicular to the workpiece rotation axis and at a distance from it. This makes it possible to be able to follow a curvature of the second workpiece surface during the finishing machining of the second workpiece surface and/or to be able to position the second finishing tool in the transition area between the first workpiece surface and the second workpiece surface. In particular, it is possible to also be able to finish-machine the transition area itself, for example a rounding between the peripheral surface and the second workpiece surface.

It is preferred that the finishing tool is prestressed about the tilting axis in a first tilting direction. In this way, a preferred position of the second finishing tool can be defined, which allows a flat contact with different sections of the second workpiece surface, whereby the second finishing tool can still be tilted against the prestressing direction, in particular in order to be able to follow a course of a transition area that is curved in profile. The prestress acting in the direction of the first tilting direction can be generated, for example, by a spring or by a pneumatic actuator.

Different workpiece receiving devices can be considered for the finishing system according to the invention. For example, the workpiece can be held between two centering points. This mount is particularly suitable for a workpiece axis of rotation arranged in a horizontal plane.

The invention further relates to a finishing installation which comprises a finishing system as explained above and also a second finishing device and a transport device for transporting the workpiece between the first finishing device and the second finishing device. Each of the finishing devices is used to simultaneously finish two workpiece surfaces that are directly adjacent to one another in a transition area.

The transport device advantageously includes a turning device for turning the workpiece.

A particularly advantageous embodiment provides that the first finish machining device is designed for machining the peripheral surface of the workpiece and a first end face of the workpiece and that the second finish machining device is designed for machining the peripheral surface of the workpiece and a second end face of the workpiece. This makes it possible to process the same peripheral surface of the workpiece using both the first finishing device and the second finishing device. It is particularly preferred that the first finishing tool of the first finishing device is a roughing tool and that the first finishing tool of the second finishing device is a finishing tool. It is thus possible to rough-machine the peripheral surface of the workpiece by means of the first finishing device and to finish it by means of the second finishing device.

The roughing tool is preferably a finishing stone and the finishing tool is a finishing belt.

Further features and advantages of the invention are the subject of the following description and the graphic representation of preferred exemplary embodiments.

• 1 eine perspektivische Ansicht einer Ausführungsform eines Finishbearbeitungssystems mit einem Werkstück in Form eines Wälzkörpers;
• 2 das Finishbearbeitungssystem gemäß 1 aus einer entgegengesetzten Perspektive;
• 3 eine perspektivische Ansicht einer weiteren Ausführungsform eines Finishbearbeitungssystems mit einem Werkstück in Form einer Welle, wobei das Werkstück freigestellt ist;
• 4 eine der 3 entsprechende Ansicht des Finishbearbeitungssystems, wobei das Werkstück finishend bearbeitet wird;
• 5 eine perspektivische Ansicht einer Ausführungsform eines Finishbearbeitungssystems mit einem Werkstück in Form eines Pumpenzahnrades;
• 6 das Pumpenzahnrad, die Finishwerkzeuge und einen Teil der Andrückwerkzeuge des Finishbearbeitungssystems gemäß 5 in Alleinstellung;
• 7 das Finishbearbeitungssystem gemäß 5 aus einer entgegengesetzten Perspektive;
• 8 eine perspektivische Ansicht einer Ausführungsform eines Werkzeughalters für ein zweites Finishwerkzeug eines Finishbearbeitungssystems;
• 9 eine Vorderansicht einer Baugruppe des Werkzeughalters gemäß 8, in einer ersten Arbeitsstellung;
• 10 eine der 9 entsprechende Vorderansicht, in einer zweiten Arbeitsstellung;
• 11 eine Draufsicht einer Ausführungsform einer Finishbearbeitungsanlage mit zwei Finishbearbeitungsvorrichtungen und mit einer Wendeeinrichtung; und
• 12 eine Vorderansicht der Finishbearbeitungsanlage gemäß 11.

In the drawing shows

• 1 a perspective view of an embodiment of a finishing system with a workpiece in the form of a rolling element;
• 2 the finishing system according to 1 from an opposite perspective;
• 3 a perspective view of another embodiment of a finishing system with a workpiece in the form of a shaft, wherein the workpiece is exposed;
• 4 one of the 3 Corresponding view of the finishing system, with the workpiece being finished;
• 5 a perspective view of an embodiment of a finishing system with a workpiece in the form of a pump gear;
• 6 the pump gear, the finishing tools and some of the pressing tools of the finishing system 5 alone;
• 7 the finishing system according to 5 from an opposite perspective;
• 8th a perspective view of an embodiment of a tool holder for a second finishing tool of a finishing system;
• 9 a front view of an assembly of the tool holder according to FIG 8th , in a first working position;
• 10 one of the 9 corresponding front view, in a second working position;
• 11 a plan view of an embodiment of a finishing system with two finishing devices and with a turning device; and
• 12 a front view of the finishing plant according to FIG 11 .

An embodiment of a finishing system is in the 1 and 2 denoted overall by the reference numeral 10. The system 10 includes a finishing device, generally designated by the reference numeral 12, and a workpiece 14 to be finished, for the example of FIG 1 and 2 in the form of a roller bearing body 16.

The finishing device 12 includes a workpiece receiving device 18 for receiving the workpiece 14. The workpiece receiving device 18 includes two spaced centers 20 and 22 which are coupled in a known manner to a headstock or a tailstock. Such a headstock forms a rotary drive for driving the workpiece 14 about a workpiece axis of rotation 24.

The finishing device 12 comprises a first finishing tool 26 in the form of a finishing belt 28, which is 1 is indicated by dash-dotted boundary lines.

The finish belt 28 is pressurized by means of a pressure roller 30 and pressed against a first workpiece surface 32 in the form of a peripheral surface 34 of the workpiece 14 .

The pressure roller 30 and thus also the first finishing tool 26 oscillate along a first oscillation axis 36 using a first oscillation drive which is known per se and is not shown here.

The finishing device 12 also has a second finishing tool 38 in the form of a finishing belt 40 . The finish belt 40 is pressed against a second workpiece surface 44 in the form of an end face 46 of the workpiece 14 by means of a pressure roller 42 .

The pressure roller 42 and thus also the finish belt 40 are driven in an oscillating manner by means of an oscillating drive which is known per se and is therefore not shown, so that the pressure roller 42 and the finish belt 40 move in an oscillating manner along a second oscillation axis 48 .

The first oscillation axis 36 runs parallel to the workpiece rotation axis 24.

The second axis of oscillation 48 runs perpendicular to the workpiece axis of rotation 24; the axis of oscillation 48 can be perpendicular to the axis of rotation of the pressure roller 42 (as in 1 shown) or parallel to the axis of rotation of the pressure roller 42.

The amplitude of the oscillating movements is a few millimeters and can in particular be smaller than the respective extension of the workpiece surface 32, 44 to be machined. The first finishing tool 26 can therefore be moved in a direction parallel to the first oscillation axis 36 by means of a traversing drive which is known per se and is not shown here. In a corresponding manner, the second finishing tool 38 can be moved in a direction parallel to the second oscillation axis 48 by means of a traversing drive which is known per se and is not shown here.

The peripheral surface 34 and the end face 46 adjoin one another in a transition region 50 . At the in 1 and 2 illustrated embodiment, the transition region 50 is a rounding that is convex in cross section.

The workpiece 14 has a third workpiece surface 52 which, seen along the workpiece axis of rotation 24 , is arranged at a distance from the second workpiece surface 44 . The third workpiece surface is a second end face 54 of the roller bearing body 16.

The third workpiece surface 52 is arranged adjacent to the peripheral surface 34 of the workpiece 14 . A transition area between the end face 54 and the peripheral surface 34 is denoted by the reference number 56 . This is a rounding that is convex in cross-section.

The finishing device 12 includes a third finishing tool 58 in the form of a finishing belt 60 which is pressed against the third workpiece surface 52 by means of a pressure roller 62 . The pressure roller 62 and the third finishing tool 58 are driven in an oscillating manner by means of a third oscillation drive which is known per se and not shown here, so that the pressure roller 62 and the finishing belt 58 are driven in an oscillating manner along a third oscillation axis 64 . Furthermore, a traversing drive that is effective parallel to the third oscillation axis 64 is provided for the third finishing tool 58 .

The third axis of oscillation 64 runs perpendicular to the axis of rotation of the workpiece 24.

In particular, the axes of oscillation 48 and/or 64 extend in the radial direction in relation to the axis of rotation 24 of the workpiece.

Each of the mentioned finishing tools 26, 38, 58 is assigned a respective working area 66, 68 or 70. These working areas are offset from one another, so that the three different workpiece surfaces 32, 44 and 52 can be processed at the same time.

The working area 66 of the first finishing tool 26 extends, viewed along the workpiece axis of rotation 24, at least over the width of the peripheral surface 34, i.e. between the end faces 46 and 54. Advantageously, the first working area 66 extends over the end faces 46 and 54, viewed along the workpiece axis of rotation 24 addition, so that the finish belt 28 can be brought into a position in which the finish belt 28 rests against the peripheral surface 34 only along part of its width and is arranged at least with a partial area at the level of the transition area 50 or the transition area 56.

The working areas 68 and 70 of the second finishing tool 38 and of the third finishing tool 58 are arranged offset to the first working area and are in turn spaced apart relative to one another.

Correspondingly, the second working area 68 is not delimited radially outwards by a radial delimitation of the second workpiece surface 44 at the level of the transition area 50 , but rather the working area 68 can extend at least up to the level of the peripheral surface 34 . This applies in a corresponding manner to the third working area 70.

one in the 3 and 4 The illustrated embodiment of a finishing system 10 includes a workpiece 14 in the form of a shaft 72, in particular in the form of a camshaft (shown here) or a crankshaft.

To the above embodiment according to 1 and 2 functionally identical or similar components are denoted by the same reference symbols. It is referred to the above description of the 1 and 2 . Differences and special features of the design are explained below 3 and 4 compared to the embodiment according to 1 and 2 explained.

In the case of the finishing device 12 of the system 10 according to FIG 3 and 4 the first finishing tool 26 in the form of a finishing belt 28 is pressed by means of a shell 74 against the first workpiece surface 32 in the form of a peripheral surface, here a bearing surface of the shaft 72. The finishing belt 28 is in contact with the peripheral surface 34 in a cup-shaped contact area over a partial circumference of the circumference of the peripheral surface 34.

The second finishing tool 38 in the form of a finishing belt 40 and an optional third finishing tool 58 in the form of a finishing belt 60 can each be subjected to a pressing force via flat pressing elements 76, 80 for the respective processing of workpiece surfaces adjacent to the peripheral surface 34, namely a second workpiece surface 44 and optionally a third workpiece surface 52. The workpiece surfaces 44, 52 are designed as axial bearing surfaces.

The pressing elements 76 and 78 can be spread in mutually opposite directions by means of an interposed wedge element 78, so that the finishing tools 38 and 58 can reach the workpiece surfaces 44 and 52 at the same time.

The finishing tools 38 and 58 are held on a common unit 82 which can be displaced along a displacement axis 84 parallel to the oscillation axes 48, 64. In the case of a horizontal workpiece axis of rotation 24, the traversing axis 84 is arranged vertically. The finishing tools 38, 58 of the unit 82 can be advanced along an infeed axis 86 in the radial direction onto the axis of rotation 24 of the workpiece.

The first finishing tool 26 and the pressure shell 74 are held on a unit 88 that is separate from the unit 82 . This unit 88 can be advanced onto the workpiece 14 along an infeed axis 90 in a radial direction with respect to the workpiece axis of rotation 24 .

An operating state of the finishing system 10 is in 4 shown. In this state, the unit 88 with the first finishing tool 26 is advanced along the infeed axis 90 in the radial direction onto the workpiece 14, so that the pressure shell 74 presses the first finishing tool 26 in the form of the finishing belt 28 against the peripheral surface 34 of the shaft 72.

The unit 82 is moved along the infeed axis 84 in such a way that the pressing elements 76, 80 are arranged at the level of the second workpiece surface 44 and the third workpiece surface 52, respectively. In addition, the finishing tools mentioned are infed along the infeed axis 86 in the radial direction onto the workpiece rotation axis 24 of the workpiece 14, so that the finishing belts 40 and 60 are in respective contact with the second workpiece surface 44 and the third workpiece surface 52 of the shaft 72.

For the finishing machining of the shaft 72, it is rotated about the axis of rotation 24 of the workpiece by means of a rotary drive. The first finishing tool 26 oscillates along a first oscillation axis 36 parallel to the workpiece axis of rotation 24, cf. 1 .

The second finishing tool 38 and the third finishing tool 58 oscillate along mutually parallel oscillation axes 48 and 64 which run perpendicularly to the first oscillation axis 36 and perpendicularly to the workpiece axis of rotation 24 .

For the oscillating drive of the first finishing tool 26, an oscillating drive known per se and not shown here is provided. For the oscillating drive of the finishing tools 38 and 58, the unit 82 has an oscillating drive 92, which sets at least the area of the pressing elements 76 and 80 into an oscillating movement. To generate the oscillating movements along the oscillating axes 48 and 64, a common oscillating drive 92 is provided.

Finishing belt 28 has a width that is smaller than the width of peripheral surface 34 measured parallel to workpiece axis of rotation 24. By means of the oscillation of finishing belt 28 along first oscillation axis 36, however, the entire width of peripheral surface 34 and the transition region 50 to second workpiece surface 44 or the transition area (no reference number) to the third workpiece surface 52 can be machined.

A first working area 66 of the first finishing tool 26 is therefore delimited by the second workpiece surface 44 and the third workpiece surface 52 . In the case of a horizontal workpiece axis of rotation 24 and in the case of an imaginary vertical plane including the workpiece axis of rotation 24, the first work area 66 is arranged on a different side in relation to the vertical plane than the two work areas 68 and 70 of the second finishing tool 38 or the third finishing tool 58. The work area Rich 58 and 70 are in turn spaced relative to each other.

That in the 3 and 4 The system 10 shown enables the finishing machining of a peripheral surface 34 of a shaft 72 and the simultaneous machining of at least one axial bearing or thrust bearing surface adjacent to this peripheral surface 34 .

For that in the 3 and 4 In the exemplary embodiment shown, the respective transition regions between the first workpiece surface 32 and the second workpiece surface 44 or between the first workpiece surface 32 and the second workpiece surface 52 are rounded in cross section in a concave manner.

It is possible that the oscillating movement along the first oscillation axis 36 is not generated by the first finishing tool 26 being driven in an oscillating manner, but by the workpiece 14 being driven in an oscillating manner in a direction parallel to the workpiece axis of rotation 24 . In this case, it is possible for the first finishing tool 26 to stand still when viewed along the axis of rotation 24 of the workpiece. In the event that the oscillating movement along the first oscillation axis 36 is generated by a movement of the workpiece 14, a compensation device 94 is preferably provided, which makes it possible to move the second finishing tool 38 and, if necessary, the third finishing tool 58 along a axis parallel to the oscillation axis 36 To move compensation axis 96 (passive).

At the in the 3 and 4 In the exemplary embodiment illustrated, the second finishing tool 38 and the second finishing tool 58 are provided by finishing belts 40 and 60 which are separate from one another. It is possible for the second and the third finishing tool to be provided by the same finishing belt, with a first section of this finishing belt being assigned to the second workpiece surface 44, the finishing belt then being deflected in a deflection section and a second section of the same finishing belt being assigned to the third workpiece surface 52 is.

At the in 5 until 7 In the exemplary embodiment of a finishing system 10 illustrated, the workpiece 14 is in the form of a pump gear 98, cf. in particular 6 .

The pump gear 98 has two peripheral surfaces 34a and 34b which are offset relative to one another. A toothed area 100 is formed between these peripheral surfaces. The toothed area 100 has a second workpiece surface 44 in the form of a first toothed end face, which adjoins the first peripheral surface 34a. The toothed region 100 also has a third workpiece surface 52 which faces away from the second workpiece surface 44 and is designed as a toothed end face and adjoins the second peripheral surface 34b.

A special feature of the system 10 according to 5 until 7 is that the system 10 has a fourth finishing tool 102 in the form of a finishing belt 104, which is pressed against the second peripheral surface 34b via a pressure roller 106.

The other finishing tools are also pressed by respective pressure rollers against the workpiece surface to be finished, for the example of the first finishing tool 26 using a pressure roller 30.

All finishing tools 26, 38, 58 and 102 are driven in an oscillating manner. Going beyond the oscillation of the first finishing tool 26 along the first oscillation axis 36 and the oscillation of the second and third finishing tools 38 and 58 along the second and third oscillation axes 48 and 64, the fourth finishing tool 102 is also driven to oscillate along a fourth oscillation axis 108.

The fourth oscillation axis 108 runs parallel to the workpiece rotation axis 24.

The first finishing tool 26 and the second finishing tool 38 serve to machine the first peripheral surface 34a and the second workpiece surface 44 adjacent thereto in the form of one of the two toothed end faces.

In a corresponding manner, the third finishing tool 58 and the fourth finishing tool 102 are used for finishing the third workpiece surface 52 in the form of the other toothed end face and the peripheral surface 34b adjoining it.

A fourth work area 110 is assigned to the fourth finishing tool 102, cf. 5 and 6 . This fourth work area 110 is spatially offset from the respective work areas 66, 68, 70 of the first three finishing tools 26, 38 and 58. The work areas 66, 68 and 70 are also spatially offset from one another.

The machining situation on “one half” of the pump gear 98, ie the machining of the peripheral surface 34a and the second workpiece surface 44 on the one hand and the machining of the second peripheral surface 34b and the workpiece Surface 52, on the other hand, is in each case comparable to the "butt" machining adjacent to a transition area 50, which is described with reference to the exemplary embodiment in FIG 3 and 4 have been described.

Incidentally, for the description of the embodiment according to 5 until 7 according to the above description of the exemplary embodiments 1 until 4 referenced.

To hold a second finishing tool 38, in particular in the form of a finishing belt 40, a following with reference to FIG 8th until 10 described tool holder 112 can be used.

The tool holder 112 can be moved along the axis of travel 114 parallel to the axis of rotation 24 of the workpiece. This enables the second finishing tool 38 to be advanced outside of a peripheral surface 34 of the workpiece 24 in the direction of the second workpiece surface 44. This enables the delivery of the second finishing tool 38 in the radial direction in relation to the workpiece axis of rotation 24 . In order to provide the movement axes 114 and 116, a compound slide arrangement which is known per se and is therefore not shown is provided.

The finishing tool 38 is mounted on the tool holder 112 such that it can be tilted about a tilting axis 118, cf. 9 and 10 . This enables a rounded transition region 50 to be machined between the second workpiece surface 44 and the peripheral surface 34 of a workpiece 14 which is designed in particular as a rolling element 16 .

The tool holder 112 comprises a frame 120 which is also used, for example, to arrange a supply roll 122 for fresh finish belt 40 and to arrange a collection roll 124 for used finish belt 40 .

The frame 120 has an extension arm 126 for arranging a tilting bearing 128 and for arranging a frame 130 . A tilting arm 132 is tiltably mounted on the tilting bearing 128 . At its free end, the tilting arm 132 carries a pressure roller 42 for pressing the finishing tool 38 against the second workpiece surface 44 and against the rounded transition region 50.

The tool holder 112 also has a pneumatic actuator 134, for example, which is supported on the frame 130 at one end and is connected to a coupling section 136 of the tilting arm 132 at the other end. The actuator prestresses the finishing tool 38 about the tilting axis 118 in a first tilting direction 138 . In this way, the second finishing tool 38, starting from a first working position, is in flat contact with the second workpiece surface 44 (cf 9 , first working position) is prestressed in such a way that the second finishing tool 38 remains in planar contact with the rounded transition region 50 of the workpiece 24 when it is displaced radially outwards, i.e. it can also follow the course of the transition region, which is curved in profile (cf 10 , second job).

A above with reference to 8th until 10 Tool holder 112 described is particularly suitable for use in a below with reference to 11 and 12 described finishing plant 140.

The finishing facility 140 includes two previously referred to in FIG 1 until 10 described finishing devices. These are in the 11 and 12 denoted by reference numerals 12a and 12b.

A workpiece 14a or 14b can be processed with each of the finishing devices 12a and 12b, so that both finishing devices 12a and 12b are preferably operated simultaneously. However, the finishing devices 12a and 12b are used for the sequential machining of the same workpieces 14a, 14b, which are designed in particular in the form of roller bearing bodies 16a, 16b.

The finishing installation 140 has a transport device 142 for transporting a workpiece 14a, 14b from the first finishing device 12a to the second finishing device 12b.

The transport device 142 includes a first transfer device 144, which is assigned to the first finishing device 12a, a turning device 146 and finally a second transfer device 148, which is assigned to the first finishing device 12b.

The first transfer device 144 has a workpiece inlet 150 for unmachined workpieces 14a, 14b and also a workpiece outlet 152 for workpieces 14a, 14b machined in the first finishing device 12a.

The second transfer device 148 has a workpiece inlet 154 for workpieces 14a, 14b processed in the first finishing device 12a and also a workpiece outlet 156 for workpieces 14a, 14b which are initially in the first finishing device 12a and were subsequently processed in the second finishing device 12b.

The turning device 146 has a support 158 which is arranged on a carriage 160 together with the workpiece outlet 152 of the first transfer device 144 and the workpiece inlet 154 of the second transfer device 148 .

The turning device 146 comprises a turning machine 162, which serves to turn a workpiece 14a, 14b arranged on the support 158 by 180° with respect to a workpiece axis 24a, 24b.

• In einem Ausgangszustand sind in den Finishbearbeitungsvorrichtungen 12a und 12b keine Werkstücke 14a, 14b angeordnet. Davon ausgehend wird ein erstes Werkstück (in der nachfolgenden Beschreibung lediglich mit „14“ und ohne „a“ bzw. „b“ bezeichnet) über den Werkstückeinlauf 150 der ersten Übergabeeinrichtung 144 der ersten Finishbearbeitungsvorrichtung 12a zugeführt. Dort wird das Werkstück 14 im Bereich einer Umfangsfläche 34 mit einem ersten Finishwerkzeug 26a, vorzugsweise in Form eines Schruppwerkzeugs, finishend bearbeitet. Gleichzeitig wird eine an die Umfangsfläche 34 angrenzende erste Stirnseite 46 mittels eines zweiten Finishwerkzeugs 38a finishend bearbeitet. Das zweite Finishwerkzeug 38a kann beispielsweise an einem unter Bezugnahme auf 8 bis 10 beschriebenen Werkzeughalter 112 gehalten sein. Die Bearbeitung innerhalb der Finishbearbeitungsvorrichtung 12a erfolgt in der vorstehend mit Bezugnahme auf die 1 bis 10 beschriebenen Weise.

The finishing machine 140 works as follows:

• In an initial state, no workpieces 14a, 14b are arranged in the finishing devices 12a and 12b. Proceeding from this, a first workpiece (referred to simply as “14” and without “a” or “b” in the following description) is fed via the workpiece inlet 150 to the first transfer device 144 of the first finishing device 12a. There, the workpiece 14 is finished in the region of a peripheral surface 34 with a first finishing tool 26a, preferably in the form of a roughing tool. At the same time, a first end face 46 adjoining the peripheral surface 34 is finished by means of a second finishing tool 38a. The second finishing tool 38a can, for example, be attached to one with reference to FIG 8th until 10 described tool holder 112 be held. The processing within the finishing processing device 12a is carried out in the above with reference to FIG 1 until 10 described way.

After completion of the machining of the workpiece 14 in the first finishing device 12a, the workpiece 14 is transported by the first transfer device 144 to the workpiece outlet 152 and from there to the support 158. The turning device 146 with the turning machine 162 turns the workpiece 14 previously machined in the finishing device 12a, by 180° in relation to the workpiece axis 24, so that the end face 46 previously machined in the first finishing device 12a rests on the support 158 after the turning process is complete and so that the previously unmachined second end face 54 of the workpiece 14 is exposed at the top. In this state, the workpiece 14 is fed to the workpiece inlet 154 of the second transfer device 148 and from there to the second finishing device 12b.

In the second finish-machining device 12b, the peripheral surface 34 of the workpiece 14 is finished again by means of a first finish-machining tool 26b, which is preferably embodied as a finishing tool. At the same time, in the second finish-machining device 12b, the end face 54 unmachined in the first finish-machining device 12a is finish-machined by means of a second finishing tool 38b.

After completion of the processing in the second finishing device 12b, the workpiece 14 is fed to the workpiece outlet 156 by means of the second transfer device 148 . Such a workpiece 14 was thus processed successively in the first finishing device 12a and the second finishing device 12b. In the first device 12a, the peripheral surface 34 was rough-machined and the first end face 46 was finished. In the second device 12b, the previously rough-machined peripheral surface 34 was finished and, in addition, the previously unmachined end face 54 was finished.

In the 11 and 12 a state is shown in which both finishing devices 12a and 12b are occupied by a respective workpiece 14a, 14b. That in the 11 and 12 The workpiece 14b shown in the second finishing device 12b was therefore previously machined in the first finishing device 12a; the workpiece 14a shown in the first finishing device 12a is in accordance with the illustration 11 and 12 subsequent step of the second finishing device 12b fed.

The transfer devices 144 and 148 are preferably each designed as a triple gripper unit which can be rotated about a respective axis of rotation 164 , 166 .

For the example of the first transfer device 144, a position change of an unmachined workpiece from the workpiece inlet 150 to the first finishing device 12a takes place at the same time as a position change of a workpiece 14a machined in the first finishing device 12a to the workpiece outlet 152.

For the example of the second transfer device 148, a change in position of a workpiece 14a processed in the first finish processing device 12a from the workpiece inlet 154 to the second finish processing device 12b occurs at the same time as a change in position of a workpiece 14b processed in the second finish processing device 12b to the workpiece outlet 156.

QUOTES INCLUDED IN DESCRIPTION

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Patent Literature Cited

• DE 102015216357 A1 [0001]

Claims (19)

Finishing system (10), comprising a finishing device (12) and a workpiece (14) to be finished, the finishing device (12) having: - a workpiece receiving device (18) for receiving the workpiece (14) to be finished and a rotary drive for driving of the workpiece (14) about a workpiece axis of rotation (24), - a first finishing tool (26) for finishing machining a first workpiece surface (32) of the workpiece (14) and a first oscillating drive for driving the first finishing tool (26) or the workpiece (14 ) along a first oscillation axis (36), - a second finishing tool (38) for finishing a second workpiece surface (44) of the workpiece (14) and a second oscillating drive for driving the second finishing tool (38) or the workpiece (14) along a second axis of oscillation (48), wherein the workpiece (14) comprises: the first workpiece surface (32), which is designed as a peripheral surface (34) extending around the workpiece axis of rotation (24), and the second workpiece surface (44) which extends in a plane which intersects the workpiece axis of rotation (24), characterized in that the peripheral surface (34) and the second workpiece surface (44) adjoin one another in a transition area (50), and that a first working area (66) of the first finishing tool (26) is spatially offset from a second working area (68) of the second finishing tool (38). Finishing system (10) according to claim 1 , characterized in that the first working area (66) extends beyond a width of the peripheral surface (34) measured parallel to the workpiece axis of rotation (24) and/or that the second working area (68) extends beyond a radial boundary of the second workpiece surface (44 ) extends beyond. Finishing system (10) according to one of the preceding claims, characterized in that an effective range of the first finishing tool (26) is limited to a maximum of 180° of the circumference of the peripheral surface (34). Finishing system (10) according to one of the preceding claims, characterized in that the first finishing tool (26) and the first workpiece surface (32) are in contact with one another in a cup-shaped contact area over a partial circumference of the circumference of the peripheral surface (34). Finish processing system (10) according to one of the preceding claims, characterized in that the first finishing tool (26) is a finishing belt (28) and/or that the second finishing tool (38) is a finishing belt (40). Finishing system (10) according to one of the preceding claims, characterized in that the first finishing tool (26) is acted upon by a pressure roller (30) against the peripheral surface (34) and/or that the second finishing tool (38) by means of a pressure roller (42) is applied against the second workpiece surface (44). Finishing system (10) according to one of the preceding claims, characterized in that the workpiece (14) is a roller bearing body (16) and that the second workpiece surface (44) is an end face (46) of the roller bearing body (16). Finishing system (10) according to one of Claims 1 until 6 , characterized in that the workpiece (14) is a shaft (72) and that the second workpiece surface (44) is a thrust bearing surface or a thrust bearing surface of the shaft (72). Finishing system (10) according to one of Claims 1 until 6 , characterized in that the workpiece (14) is a pump gear (98) and that the second workpiece surface (44) is a gear face of the pump gear (98). Finishing system (10) according to one of the preceding claims, characterized in that the workpiece (14) has a third workpiece surface (52) which extends in a plane which intersects the workpiece axis of rotation (24), the third workpiece surface (52) along the workpiece axis of rotation (24) is at a distance from the second workpiece surface (44), that the finishing device (12) has a third finishing tool (58) for finishing the third workpiece surface (52) and a third oscillating drive for driving the third finishing tool (58) or of the workpiece (14) along a third oscillation axis (64) and that a third working area (70) of the third finishing tool (58) leads to the first working area (66) of the first finishing tool (26) and to the second working area (68) of the second Finishing tool (38) is arranged spatially offset. Finishing system (10) according to any one of the preceding claims, characterized in that the second finishing tool (38) on a tool holder (112) which can be moved along a traversing axis (114) parallel to the workpiece axis of rotation (24). Finishing system (10) according to claim 11 , characterized in that the second finishing tool (38) is mounted on the tool holder (112) such that it can tilt about a tilting axis (118), the tilting axis (118) running perpendicular to the workpiece axis of rotation (24) and at a distance therefrom. Finishing system (10) according to claim 12 , characterized in that the second finishing tool (38) is prestressed about the tilting axis (118) in a first tilting direction (138). Finishing system (10) according to one of the preceding claims, characterized in that the workpiece receiving device (18) has two centering points (20, 22) between which the workpiece (14) is received. Finishing installation (140), comprising a finishing system (10) according to one of the preceding claims with a first finishing device (12a) and a workpiece (14a) to be finished, further comprising: - a second finishing device (12b), - A transport device (142) for transporting the workpiece (14a) between the first finishing device (12a) and the second finishing device (12b). Finishing plant (140) according to claim 15 , characterized in that the transport device (142) comprises a turning device (146) for turning the workpiece (14a). Finishing plant (140) according to claim 15 or 16 , characterized in that the first finishing device (12a) is designed for machining the peripheral surface (34) of the workpiece (14a) and a first end face (46) of the workpiece (14a) and the second finishing device (12b) for machining the same peripheral surface (34 ) of the workpiece (14a) and a second end face (54) of the same workpiece (14a). Finishing plant (140) according to Claim 17 , characterized in that the first finishing tool (26a) of the first finishing device (12a) is a roughing tool and that the first finishing tool (26b) of the second finishing device (12b) is a finishing tool. Finishing plant (140) according to Claim 18 , characterized in that the roughing tool is a finishing stone and that the finishing tool is a finishing belt.

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