Brake disc arrangement, drive system, double-sided grinding machine and method for machining brake disc

Abstract

The invention relates to a brake disc arrangement (86) having a brake disc (12), which has a friction ring (14) and a brake disc hub, which has an opening concentric to a central brake disc axis, which opening is delimited by a peripherally closed boundary, characterized by a receiving device (54), which has a central receiving axis and a centering device (60), the centring device has at least one centring surface, the centring device (60) can be inserted into an opening of the brake disc hub in the inserted state of the centring device and interacts with a boundary of the opening and / or with a surface of the brake disc hub adjoining the boundary in the fixed state in a force-fitting and / or form-fitting manner, the receiving device has a pressing body (74) which has a first pressing surface for pressing against the annular first end face of the brake disc hub, and wherein the receiving device has a second pressing surface for pressing against the annular second end face of the brake disc hub. The invention also relates to a drive system, a double-sided grinding machine and a method for machining a brake disc.

Description

[0001] priority

[0002] This application claims priority to European patent application EP 22 174981.5 filed on May 24, 2022, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] The invention relates to a brake disc arrangement comprising a brake disc with a friction ring and a brake disc pot with an opening which is concentric to a central brake disc axis and is delimited by a border which is closed on the peripheral side. Summary of the invention

[0004] The object of the present invention is to enable easy transfer of brake discs in a system for machining brake discs.

[0005] This object is achieved by a brake disk arrangement having the features of claim 1 .

[0006] The receiving device enables a simple force fit and / or form fit with the boundary of the central opening of the brake disc hub and / or with the surface portion of the brake disc hub adjacent to the boundary. As a result, the central brake disc axis and the central receiving axis of the receiving device can be arranged in alignment with each other and the brake disc can be fixed in an area as far away as possible from the friction surface of the friction ring of the brake disc. In addition, the receiving device includes a pressing body with a first pressing surface, which is designed to press against the annular first end face of the brake disc hub. In addition, the pressing surface can fix the brake disc in particular in an area of ​​the brake disc hub that is also spaced apart from the friction surface of the friction ring.

[0007] In particular, the fixation is effective during transport with the central brake disc axis oriented horizontally. This enables a "standing" transport of the brake disc, wherein the friction ring of the brake disc extends in a substantially vertical transport plane. This is particularly advantageous in conjunction with a working gap of a double-sided grinding machine extending in a vertical plane, which has two grinding wheels with mutually facing active surfaces, each of which is designed for machining one of the two friction surfaces of the friction ring.

[0008] Preferably, the centering device is pretensioned in the direction of the fixing state and / or the fixing state is a stationary state of the receiving device. This aspect has the advantage that no energy needs to be supplied from the outside to fix the brake disc on the receiving device of the brake disc arrangement. In particular, the receiving device cannot be connected to a tool spindle. The brake disc arrangement is thus self-sufficient and remains in a state in which the brake disc is fixed on the receiving device without any external energy supply.

[0009] A preferred possible option for applying and pre-tensioning the centering device is to use a spring, in particular a mechanical spring. In addition or alternatively, it is also possible to consider using a pneumatic and / or hydraulic spring.

[0010] It is further preferred that the receiving device has an actuating device for switching the centering device from the fixed state to the inserted state. This actuation can be accompanied by an energy supply from the outside; however, this energy supply is only required in the transition state when the centering surface is inserted into the opening of the brake disc hub.

[0011] It is further preferred that the receiving device has an actuating section with an actuating surface for actuation by an external gripper, wherein the actuating surface preferably extends concentrically with the receiving axis. Such a actuating surface enables simple clamping of the receiving device, in particular a simple clamping of the receiving device to which the brake disc is fastened. The gripper can in particular be a two-jaw gripper which can firmly clamp the preferably cylindrical actuating surface and can displace it for conveying the brake disc arrangement.

[0012] Preferably, the diameter of the clamping surface is at most half the outer diameter of the friction ring of the brake disk of the brake disk arrangement. As a result, the brake disk arrangement can be securely clamped in a compact installation space.

[0013] The actuation part is preferably arranged on the side of the extrusion body facing away from the first extrusion surface. In this way, even an external clamp of simple design can be attached without collision.

[0014] It is particularly preferred that the receiving device has a central shaft which is connected to the extrusion body and whose free end projects out of the centering device. For example, the free end can be used to insert the brake disc arrangement together with the free end of the central shaft into a guide sleeve of a drive system for rotationally driving the brake disc.

[0015] It is particularly preferred that the free end has at least one coupling portion for producing a positive fit and / or a non-positive fit with a coupling counterpart acting along the shaft axis of the central shaft, the coupling counterpart being provided by a spindle drive of a drive system for rotationally driving the brake disc. The coupling counterpart subjects the central shaft and thus the displacement body to a pressure which presses a first displacement surface of the displacement body against a first annular end surface of the brake disc hub.

[0016] The invention also relates to a drive system for rotationally driving a brake disk, wherein the drive system has a spindle drive having a second extrusion surface which can be pressed against an annular second end surface of a brake disk hub facing away from the first end surface, wherein the drive system comprises the above-described brake disk arrangement. As a result, the above-described receiving device can be used in the drive system, wherein the end surfaces of the brake disk hub facing away from each other are arranged between a first extrusion surface of a extrusion body of the receiving device and a second extrusion surface of the spindle drive and are fixed between these extrusion surfaces.

[0017] It is particularly preferred that the drive system has a coupling counterpart which interacts with a coupling of the central shaft of the receiving device and which applies a tensioning force to the central shaft such that the first pressing surface is pressed against the first end face of the brake disc hub and the second pressing surface is pressed against the second end face of the brake disc hub. Overall, the result is a central arrangement of the brake disc relative to a central spindle axis which is fixed in the region of the end face of the brake disc hub, so that during the grinding of the friction surface of the brake disc friction ring, very high torques can be applied to the friction surface without affecting the rotational drive of the brake disc (so that, in particular, slipping of the brake disc relative to the spindle drive is prevented).

[0018] Particularly high torques can be applied when the first pressing surface and the second pressing surface overlap in a radial direction relative to the shaft axis of the central shaft.

[0019] A particularly preferred drive system comprises a handling device having a frame on which at least two holders are arranged in a circumferentially distributed manner, each of which has a locking device for releasably arranging a receiving device, wherein the frame can be driven rotationally relative to the spindle drive about a frame axis by a rotary drive in order to move the holders and selectively position a specific holder to which a specific receiving device and brake disk are fixed, wherein the frame axis is oriented perpendicularly to the spindle axis of the spindle drive. Such a drive system makes it possible to keep available a plurality of receiving devices, in particular receiving devices directly adjacent to the spindle drive, each of which is equipped or can be equipped with a brake disk to be processed by grinding or machining the brake disk. Since the frame axis is oriented perpendicularly to the spindle axis, the receiving devices can be kept available in a relatively small space.

[0020] At least two retaining members are provided, which are arranged along the circumference, in particular regularly distributed, for example, two retaining members are arranged 180° apart from each other along the circumference. Three retaining members or four retaining members or at least four retaining members can be provided.

[0021] The retaining members can be connected to each other so that the distance of the retaining members along the circumference is invariable. Preferably, the retaining members can be freely positioned and fixed along the circumference, for example, to change the number of retaining members and / or to provide a brake disc receiving portion specific to the geometry of a certain brake disc for the retaining members.

[0022] Preferably, the frame is arranged on a carriage which can be driven by a carriage drive relative to the carriage support along the carriage axis in the direction towards the spindle drive and in the opposite direction. This makes it possible to simplify the transfer of the brake disc arrangement with the brake disc to be ground to the spindle drive and to simplify the transfer of the brake disc arrangement with the ground brake disc from the spindle drive. The carriage support can, for example, extend in a horizontal plane, in particular in or parallel to the top surface of the machine bed of the double-sided grinding machine. The carriage support can also extend in a vertical plane, in particular perpendicular to the top surface of the machine bed of the double-sided grinding machine.

[0023] Particularly preferably, a receiving device for receiving a brake disc having a first brake disc geometry is arranged on at least one first holder or respectively on at least two first holders, and a receiving device for receiving a brake disc having a second brake disc geometry different from the first brake disc geometry is arranged on at least one second holder or respectively on at least two second holders. As a result, brake discs with different geometries (in particular geometries with regard to different outer and / or inner diameters of the friction ring) can be processed flexibly. This means that different brake discs can also be processed "randomly"; a conversion operation is no longer necessary to process a series of consecutive brake discs with different geometries.

[0024] In a further preferred embodiment, the handling device has an actuating drive for actuating the actuating device of the receiving device, which actuating drive is arranged in a particularly non-rotatable manner relative to the frame axis. As a result, the respective receiving device can be transferred from a fixed state of the receiving device into an inserted state, in particular for fitting a brake disc to be ground onto the receiving device and for releasing a brake disc which has been ground from the receiving device.

[0025] In a further preferred embodiment, the handling device has a release drive for releasing the locking device, which is arranged in a particularly rotationally fixed manner relative to the frame axis. As a result, the receiving device equipped with the brake disk to be machined by grinding can be released from the holder in order to prepare for its transfer to the spindle drive, in particular to couple it with the spindle drive.

[0026] Furthermore, the above and below discussed actuating device itself and in combination with a receiving device for releasably receiving a brake disc is also advantageous. Such a receiving device can have all the features of the receiving device of claim 1. Such a receiving device can also have only a subset of the features of the receiving device of claim 1 or none of the features of the receiving device of claim 1.

[0027] The invention also relates to a double-sided grinding machine having two grinding wheels and having the above-mentioned drive system. In particular, the grinding wheels can be driven in a rotational manner about a horizontally oriented grinding wheel axis.

[0028] The invention also relates to a method for machining a brake disk having the features of the method claim. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Further features and advantages of the invention are the subject matter of the following description and of the graphical depiction of a preferred exemplary embodiment.

[0030] Figure 1 A perspective view showing a system for grinding a brake disc in an initial state;

[0031] Figure 2 The brake disc is shown in a state where it is ready to be fixed on the receiving device according to Figure 1 A stereogram of the system;

[0032] Figure 2 a shows the Figure 2 A vertical section of the section shown in IIa in FIG.

[0033] Figure 2 b shows that Figure 2 Enlarged view of the detail indicated by IIb in a;

[0034] Figure 3 The brake disc is shown in a state in which the brake disc is fixed to the receiving device and forms a brake disc arrangement structure together with the receiving device. Figure 2 b corresponding details;

[0035] Figure 4 Shown in accordance with Figure 3 The brake disc arrangement is in the transport state according to Figure 1 A stereogram of the system;

[0036] Figure 5 Shown in preparation according to Figure 3 The coupling state between the brake disc arrangement structure and the spindle drive of the drive system of the double-sided grinding machine is based on Figure 1 A stereogram of the system;

[0037] Figure 5 a shows the Figure 5A vertical section of the section shown by Va in FIG.

[0038] Figure 5 b shows that Figure 5 A magnified view of the detail indicated by Vb in a;

[0039] Figure 6 The brake disc arrangement and the spindle drive are shown in a state in which the brake disc arrangement and the spindle drive are coupled to each other. Figure 5 b corresponding details;

[0040] Figure 7 Show according to Figure 1 A three-dimensional view of the system during the brake disc grinding process;

[0041] Figure 8 Shown in accordance with Figures 1 to 7 A plan view of another brake disc arrangement structure used in a system of

[0042] Figure 8 a shows that in a fixed state according to Figure 8 A vertical section of a brake disc arrangement;

[0043] Figure 8 b shows the insertion state and Figure 8 a The corresponding diagram;

[0044] Figure 8 c is shown by Figure 8 An enlarged view of the detail indicated by VIIIc in b;

[0045] Fig. 9 Shown in accordance with Figures 1 to 7 A vertical section of another brake disc arrangement structure used in a system of;

[0046] 10a to 10h show plan views of an embodiment of a double-sided grinding machine with a drive system and a handling device in successive operating stages; and

[0047] Fig.11 A vertical section of the manipulator is shown along the section indicated by XI-XI in FIG. 10c. DETAILED DESCRIPTION

[0048] Figure 1 , 2 , 4, 5 and 7 show perspective views and different states of a system for grinding a brake disc. These states relate to a brake disc denoted by reference numeral 12 and passing through the system 10.

[0049] The brake disc 12 has a friction ring 14 and a brake disc hub 16. The brake disc hub 16 has a central opening 18. The opening 18, the brake disc hub 16 and the friction ring 14 extend concentrically with a central brake disc axis 20.

[0050] The system 10 has a receiving area 22 for receiving the brake disk 12 and a double-side grinder 24 including a drive system 26 for rotationally driving the brake disk 12. To transfer the brake disk 12 between the receiving area 22 and the drive system 26 of the double-side grinder 24, the system 10 comprises a transfer area 28.

[0051] The receiving area 22 is adjacent to an inlet 30 for brake discs 12 to be ground and an outlet 32 ​​for brake discs 12 that have been ground. Figure 1 and 5 The fixed frame 34 is disposed between the feed portion 30 and the discharge portion 32 and is used to arrange a rotating plate 36. The rotating plate 36 can rotate relative to the frame 34 around a vertical axis 38 and can move relative to the frame 34 along a horizontal stroke axis 40.

[0052] The rotating plate 36 has two brake disc receptacles 42 and 44, which are pivotable between a horizontal position and a vertical position about respective associated horizontal pivot axes 46, 48. In order to fix the brake disc 12 to the brake disc receptacles 42, 44, each brake disc receptacle has a bearing surface 50 and a counter-holder 52 spaced apart from the bearing surface 50. In the horizontal position of one of the brake disc receptacles 42, 44, the bearing surface 50 points upwards.

[0053] exist Figure 1 , the brake disc 12 received from the feed section 30 is shown in the following state: the brake disc rests on the support surface 50 of the brake disc receiving section 42 and is fixed in the region of the friction ring 14 by the counter-holder 52. Figure 2 a and 2b, starting from this state, the rotating plate 36 is rotated 180° about the vertical axis 38, and the brake disc receiving portion 42 is pivoted about the pivot axis 46, so that the brake disc 12 is in Figure 2 Vertical position shown.

[0054] The system 10 also includes a receiving device 54, which is referred to below. Figure 2 b and 3 illustrate its structure and function.

[0055] The opening 18 of the brake disk 12 is delimited by a peripherally closed border 56 . The receiving device 54 extends along a central receiving axis 58 and has a centering device 60 .

[0056] The centering device 60 has a clamping cone 62 and a clamping sleeve 64, which has a centering surface 66. The clamping cone 62 is connected to a piston 68 via a tie rod (without reference numeral) and pretensions the piston 68 in a pretensioning direction 70, in particular via a spring 72. The spring 72 is designed as a compression spring and exerts a compressive force on both the piston 68 and the displacement body 74 of the receiving device 54.

[0057] The displacement body 74 has a first displacement surface 76, in particular an annular first displacement surface, for pressing against an annular first end surface 78 of the brake disk hub 16. The brake disk hub further has a second end surface 80 facing away from the first end surface 78.

[0058] In the stationary state of the receiving device 54, the centering device 60 is prestressed by the spring 72, wherein the prestressing force is transmitted to the clamping cone 62 via the piston 68 and the tie rod and presses the clamping cone into the clamping sleeve 64, so that the centering surface 66 of the clamping sleeve 64 is pushed radially outward. In this state, the centering surface 66 has a larger diameter than the boundary 56 of the opening 18 of the brake disk 12.

[0059] In order to reduce the diameter of the centering surface 66, the receiving device 54 has an actuating device 82, which has a pressure chamber 84 supplied by a line 86 (compare Figure 2 ). The pressure chamber 84 acts on the side of the piston 68 facing away from the spring 72, so that the pressure in the pressure chamber 84 increases, resulting in an increase in the pressure chamber 84 while overcoming the action of the spring 72. This is accompanied by the clamping cone 62 being removed from the clamping sleeve 64, so that the centering surface 66 is reduced and can be inserted into the opening 18 of the brake disk 12 in the inserted state.

[0060] Comparison Figure 3 For said insertion, the central brake disc axis 20 and the central receiving axis 58 are arranged in alignment with each other. The rotating plate 36 is moved along the stroke axis 40 so that the centering device 60 starts from the spaced arrangement of the brake disc 12 and the receiving device 54 (compare Figure 2 b) into the opening of the brake disk 12. By releasing the actuating device 82 (pressure in the pressure chamber 84 drops), the spring 72 again applies a pretensioning force to the clamping cone 62, so that the centering surface 66 of the centering device 60 is tensioned in a force-fitting manner on the boundary 56 of the opening 18 of the brake disk 12. At the same time, the first pressing surface 76 of the pressing body 74 contacts the first end surface 78 of the brake disk hub 16.

[0061] The brake disk 12 and the receiving device 54 together form a brake disk arrangement 86 which is supplied from the receiving region 22 via the transfer region 28 to the drive system 26 of the system 10 .

[0062] The receiving device 54 also has a central shaft 88, which extends along the shaft axis 90 and is in particular connected integrally to the displacement body 74. The central shaft 88 passes through the centering device 60. Figure 2 b. The central shaft 88 has a coupling portion 92 at its free end, which protrudes from the centering device 60 .

[0063] The receiving device 54 also has a housing 94, which is connected to the displacement body 74 and is used to accommodate the spring 72, the piston 68 and the pressure chamber 84. The housing 94 forms an operating part 96 with a cylindrical operating surface 96 (compare Figure 3 ), which extends concentrically with the receiving axis 58 of the receiving device 54. The operating portion 96 is particularly arranged on a side of the displacement body 74 facing away from the first displacement surface 76.

[0064] Comparison Figure 2 The control surface 98 is used to control the receiving device 54 , ie in particular to control the receiving device 54 using the gripper 100 .

[0065] Comparison Figure 4 The gripper 100 is part of a transfer device 102 having a transfer axis 104 , which serves to transfer the brake disk arrangement 86 from the receiving area 22 to the drive system 26 .

[0066] The conveyor device 102 has a conveyor arm 106 which is driven by a motor along a conveyor axis 104 and on which a conveyor rocker 108 is mounted for pivoting about an axis 110 .

[0067] The transfer rocker 108 is used to arrange the gripper 100 (especially a double-jaw gripper), and preferably to arrange another gripper 112, Figure 4 The further clamp 112 is also designed to clamp the actuation surface 98 of the receiving device 54 .

[0068] from Figure 3 Starting from the state shown in which the brake disc 12 is fixed to the receiving device 54, the brake disc 12 is first detached from the brake disc receptacle 42. To this end, Figure 4 , the transmission rocker 108 is from according to Figure 2 The state starts and is based on Figure 3 The brake disc arrangement 86 is pivoted upward together. As a result, the brake disc receiving portion 42 can be moved from a vertical position (see Figures 2 to 3 ) pivots back to its horizontal position (see Figure 4 ). In this way, Figure 4 and 5 The transfer arm 106 together with the transfer rocker 108 and the gripper 100 together with the brake disk arrangement 86 can be provided collision-free along the transfer axis 104 to the drive system 26 of the double-side grinding machine 24 .

[0069] The drive system 26 is arranged on a machine bed 114 of the double-sided grinding machine 24. The machine bed 114 is used to support two grinding wheel drives 116 and 118, by which the respective grinding wheels 120, 122 can be driven in rotation. Figure 7The two grinding wheels 120 and 122 delimit a working gap 124 extending in a vertical plane.

[0070] The drive system 26 is arranged to be laterally offset relative to the working gap 124 and includes a carriage 126, which can be moved relative to the machine tool 114 and, in particular, can be moved along a horizontal feed axis 130 in the direction toward the working gap 124 and in the opposite direction by means of a guide 128 via a known carriage drive not shown in the figures.

[0071] Comparison Figure 5 b and 6, the bracket 126 is used to arrange a spindle drive 132 having a spindle housing 134. The spindle housing 134 can be moved relative to the bracket 126 along a horizontal stroke axis 136, wherein the stroke axis 136 is perpendicular to the feed axis 130.

[0072] The spindle drive 132 has a spindle 131 having a second pressing surface 138 which is formed in an annular shape and can be moved along the stroke axis 136 together with the spindle drive 132. The spindle drive 132 has a spindle axis 140 about which the spindle 131 having the second pressing surface 138 can be rotationally driven.

[0073] exist Figure 5 to 5 In FIG. 1 b, a state is shown in which the brake disc arrangement 86 is still held on the holder 100 and the shaft axis 90 of the center shaft 88 of the receiving device 54 is arranged aligned with the spindle axis 140. In this case, the second pressing surface 138 of the spindle drive 132 is initially still spaced apart from the second end face 80 of the brake disc hub 16 of the brake disc 12.

[0074] The spindle drive 132 has a coupling counterpart 142, which is designed to interact with the coupling portion 92 of the central shaft 88. The coupling counterpart 142 has movable form-fitting elements (without reference numerals), the relative position of which can be adjusted by the coupling drive 144 so that the form-fitting elements have a greater distance from each other (compare Figure 5 b) or have a smaller distance between them (control Figure 6 ).

[0075] The greater distance between the form-fitting elements of the coupling counterpart 142 enables the spindle drive 132 to Figure 5 The state shown in b begins to move along the stroke axis 136 in the direction of the brake disc arrangement 86. In this way, the free end of the central axis 88 of the receiving device 54 can be inserted into the coupling counterpart 142. In addition, the comparison Figure 6 , the second extrusion surface 138 contacts the second end surface 80 of the brake disc hub 16 .

[0076] Comparison Figure 6 , actuation of the coupling drive 144 causes the coupling counterpart 142 to engage with the coupling portion 92 at the free end of the central shaft 88 in a form-fitting manner. In addition, the coupling drive 144 applies a tensioning force on the coupling counterpart 142 and thereby on the central shaft 88, which is transmitted to the first end face 78 of the brake disc hub 16 via the extrusion body 74 and its first extrusion face 76. At the same time, the second extrusion face 138 of the spindle drive 132 is pressed against the second end face 80 of the brake disc hub 16, so that the brake disc hub 16 is firmly clamped between the first extrusion face 76 of the extrusion body 74 of the receiving device 54 and the second extrusion face 138 of the spindle drive 132. This is Figure 6 Status shown.

[0077] In the next step, the gripper 100 is removed from the control surface 98 of the receiving device 54 and the spindle drive 132 is moved together with the brake disk arrangement 86 along the feed axis 130 in the direction of the working gap 124 of the double-sided grinding machine 24 until the friction ring 14 of the brake disk 12 is inserted into the working gap 124. Subsequently, the friction surface of the friction ring 14 is ground by the two grinding wheels 120 and 122.

[0078] After the grinding process of the brake disk 12, the brake disk can be fed to the receiving area 22 again using the receiving device 54. Here, the brake disk 12 can be separated from the receiving device and removed as a finished part at the discharge part 32 (compare Figure 1 ).

[0079] exist Figures 8 to 8 c shows a further embodiment of a brake disc arrangement 86 with a brake disc 12 and a receiving device 54. In contrast to the force-fitting centering of the centering device 60 described above, the centering device 60 of the receiving device 54 of this further embodiment acts in a form-fitting manner with the boundary 56 of the opening 18 of the brake disc hub 16. For this purpose, the centering device 60 has at least one form-fitting element 146, in particular two, three or four form-fitting elements 146, which are preferably arranged in a regularly distributed manner along the circumference. These elements are spring-loaded and in the rest state (compare Figure 8 a) than in the inserted state (control Figure 8 b and 8c) extend radially outward further.

[0080] In order to adjust the centering device 60 from Figure 8 The stationary state of a is transformed into Figure 8 In the inserted state shown in 8b and 8c, an actuating device 82 in the form of an actuating pin 148 is provided.

[0081] The centering device 60 comprises a centering ring 150 which forms a radially outwardly directed centering surface 66. The centering ring 150 is an integral part of the central shaft 88 or is arranged separately from the shaft 88.

[0082] In the illustrated embodiment, the centering ring 150 has an additional function and forms a stop for adjustment springs 152 which are associated with the form-fitting elements 146 and which act radially inwardly on the form-fitting elements 146. The form-fitting elements 146 interact at their radially inner ends with stop balls 154.

[0083] The actuating pin 148 offsets the pre-tensioning force of the spring 72 and releases the locking element 146 by the displacement of the blocking ball 154, so that the adjusting spring 152 presses the shape-fitting element 146 radially inward, so that the boundary 56 of the opening 18 of the brake disc 12 can be displaced onto the centering surface 66 while exceeding the radial outer end of the shape-fitting element 146.

[0084] By releasing the actuating device 82, the spring 72 relaxes again, so that the blocking ball 154 is again in the blocking position, in which the form-fitting element 146 is pushed radially outwards against the action of the relatively weak adjustment spring 152. In this state, the radially outer end of the form-fitting element 146 is in rear engagement / form fit with a surface portion 156 of the second end face 80 of the brake disc hub 16. The surface portion 156 abuts the boundary 56.

[0085] exist Fig. 9 , a further embodiment of a brake disc arrangement 86 with a brake disc 12 and a receiving device 54 is shown. The centering device 60 of the receiving device 54 of this further embodiment interacts with the boundary 56 of the opening 18 of the brake disc hub 16 in a form-fitting manner. For this purpose, the centering device 60 has a spherical form-fitting element 146, which is mounted on the extrusion body 74. The form-fitting element is ( Fig. 9 In the rest state (shown), it is arranged radially further outwards than in the inserted state (not shown).

[0086] The pressing body 74 comprises an annular body 162 which faces the brake disc hub and has an annular first pressing surface 76 for pressing against an annular first end surface 78 of the brake disc hub 16 .

[0087] The centering device 60 comprises a centering surface 66 which points radially outward as a component of the central axis 88 .

[0088] In order to adjust the centering device 60 from Fig. 9 In order to convert the rest state into the inserted state, an actuating device 82 in the form of an actuating pin 148 is provided.

[0089] In the rest state, the actuating surface 158 of the actuating pin 148 presses the form-fit element 146 radially outwards so that the form-fit element 146 forms a positive fit with the boundary 56 of the opening 18 of the brake disc hub 16 and fixes the brake disc 12 to the receiving device 54 .

[0090] When the drive pin 148 is driven while overcoming the pretensioning force of the spring 72, the actuation surface 158 disengages from the form-fitting element 146; conversely, the deflection surface 160 is operatively engaged with the form-fitting element 146. The deflection surface 160 is radially inwardly offset relative to the actuation surface 158, so that the form-fitting element 146 is radially deflected inwardly and releases the form fit with the boundary 56 of the opening 18 of the brake disc hub 16.

[0091] It should be understood that according to Figures 8 to 8 c receiving device 54 and according to Fig. 9 The receiving device can be used according to Figures 1 to 7 In the system 10.

[0092] The double-sided grinding machine 24 shown in FIGS. 10 a to 10 h has a grinding drive 116 , 118 and a drive system 26 including a spindle drive 132 , wherein for the construction and function of the double-sided grinding machine, reference is made to the description according to Figures 4 to 7 The above description of the double-sided grinder.

[0093] The double-sided grinding machine 24 according to FIGS. 10 a to 10 h comprises an operating device which is denoted overall by reference numeral 200 .

[0094] The handling device 200 has a carriage support 202 connected to the machine bed 114 of the double-sided grinding machine 24. The carriage support 202 defines a carriage axis 204 that is parallel to the spindle axis 140.

[0095] The carriage 206 is mounted on the carriage support 202 so as to be movable along the carriage axis 204 and can be driven by a known carriage drive not shown in the drawings, so that the carriage 206 can move in a direction toward the spindle drive 132 and in the opposite direction.

[0096] The frame 208 is arranged on the carrier 206 and can be rotated about a frame axis 212 by means of a rotary drive 210 . The frame axis 212 is perpendicular to the spindle axis 140 .

[0097] The frame 208 has a frame structure 216 extending along the circumference 214 and is formed, for example, as a groove having a closed course on the circumferential side. The frame structure 216 is used to arrange and, in particular, releasably fix at least two retaining elements 218, 218', each of which can be connected to the frame structure 216 at a selected position along the circumference 214, for example, by a slide that can be screwed or clamped in the groove.

[0098] The retaining members 218, 218' are used to releasably retain the receiving devices 54, 54', for example according to Fig. 9 The holder 218 has a holding portion 220 on which one of the receiving devices 54, 54' is held.

[0099] The locking device 222 is used to releasably lock the receiving device 54, 54' on the holding portion 220. In the locked state of the locking device 222, the receiving device 54 is locked on the holding portion 220. In the released state of the locking device 222, the receiving device 54, 54' can be released from the corresponding holding portion 220. The locking device 222 can be actuated by a release drive 224, which converts the locking device 222 from the locked state to the released state.

[0100] The release drive 224 is non-rotatable relative to the frame 208 and is disposed on the bracket 206 ; therefore, the release drive 224 is non-rotatable with the frame 208 about the frame axis 212 .

[0101] The manipulator 200 also has an actuating drive 226. The actuating drive 226 is non-rotatable relative to the frame 208 and is arranged on the bracket 206; therefore, the actuating drive 226 cannot rotate together with the frame 208 about the frame axis 212. Fig. 9 The actuating drive 226 is used to actuate the actuating device 82 of the receiving device 54 .

[0102] Actuation of the actuating device 82 is accompanied by the fact that the actuating drive 226 exerts a compressive force on the actuating pin 148 and switches the receiving device 54 from the fixed state into the inserted state, whereby the brake disc 12 can be mounted on the receiving device 54 or removed from the receiving device 54 .

[0103] The holders 218 , 218 ′ are each provided with a receiving device 54 , 54 ′, wherein all receiving devices 54 , 54 ′ can be identical and serve to receive brake disks 12 having the same brake disk geometry.

[0104] Alternatively, one receiving device 54 of the first retaining member 218 or two receiving devices 54 of the first pair of retaining members 218 are designed to receive a brake disc 12 having a first brake disc geometry, and one receiving device 54' of the second retaining member 218' or two receiving devices 54' of the second pair of second retaining members 218' are designed to receive a brake disc 12 having a second brake disc geometry different from the first brake disc geometry.

[0105] The retaining member 218 and the receiving device 54 in the first pair and / or the retaining member 218' and the receiving device 54' in the second pair are preferably arranged relative to each other relative to the frame axis 212; there is an offset of, for example, 30° or 45° or 60° (shown in the figure) or 90° around the rotation axis 212 between the retaining members 218 and 218' in different pairs.

[0106] In the initial state of the double-sided grinder 24, neither the receiving device 54, 54' is equipped with a brake disk 12 or 12'; the working gap 124 is open; the spindle drive 132 is oriented so that the spindle axis 140 is aligned with the bracket axis 204. The bracket 206 is spaced apart from the spindle drive 132; the frame 208 is positioned about the rotation axis 212 so that the first holder 218 is arranged in the area of ​​the actuating drive 226 and faces the outer area of ​​the double-sided grinder 24. In this position of the first holder 218, its receiving device 54 can be actuated by the actuating drive 226 and converted into an inserted state, in which state the receiving device 54 can be equipped with the first brake disk 12. By deactivating the actuating drive 226, the receiving device 54 (with the assistance of the spring 72, cf. Fig. 9 ) reaches a fixed state in which the first brake disc is fixed to the receiving device 54. This initial state is shown in Figure 10a.

[0107] Starting from the state shown in FIG. 10 a , the frame 208 is rotated 90° (clockwise in the figure) about the rotation axis 212 by the rotary drive 210, and then the bracket 206 is moved in the direction toward the spindle drive 132 until the second end face 80 (reference Fig. 9 ) is in contact with the second pressing surface 138 (compare FIG. 10 a ) of the spindle drive 132. This state is shown in FIG. 10 b .

[0108] Starting from the state shown in FIG. 10 b , the locking device 222 is actuated so that the receiving device 54 can be removed from the holding portion 220 of the first holding member 218. Subsequently, the coupling portion 92 (refer to FIG. 10 b ) of the receiving device 54 is Fig. 9 ) is connected to the connecting partner 142 of the spindle drive 132. This connection has been referred to above Figure 5 b and 6; reference will be made to these descriptions. In this way, the brake disc arrangement 86 is connected to the spindle drive 132. Subsequently, the bracket 206 is removed from the spindle drive 132. This state is shown in FIG. 10c.

[0109] Starting from the state shown in FIG. 10 c , the spindle drive 132 is moved together with the brake disk arrangement 86 along the feed axis 130 in the direction of the working gap 124 of the double-sided grinder 24 until the friction ring 14 of the first brake disk 12 is inserted into the working gap 124. Subsequently, the friction surface of the friction ring 14 is ground by the two grinding wheels 120 and 122.

[0110] During the grinding process of the first brake disk 12, the second brake disk 12' can be prepared for transfer by the handling device 200 (compare FIG. 10e). For this purpose, the frame 208 is rotated 30° (clockwise in the figure) about the frame axis 212 starting from the state according to FIG. 10c, so that the second holder 218' is arranged together with the further receiving device 54' in the area of ​​the actuating drive 226. This state is shown in FIG. 10d.

[0111] In the manner described above, the second brake disc 12' is connected to the receiving device 54'. Subsequently, the frame 208 is rotated 30° (counterclockwise in the figure) about the frame axis 212 from the state shown in FIG. 10d, thereby returning the first retaining member 218 to a position where the receiving device 54 faces the drive spindle 132. This state is shown in FIG. 10e.

[0112] After the grinding of the first brake disk 12 is completed, the first brake disk 12 is released by increasing the working gap 124. The spindle drive 132 together with the ground brake disk 12 and the receiving device 54 is moved back along the feed axis 130 until the spindle axis 140 is aligned with the carrier axis 204 again.

[0113] Subsequently, the carrier 206 is moved in the direction towards the spindle drive 132, releasing the coupling partner 142 and actuating the release device 222, so that the receiving device 54 can be transferred from the holding portion 220 of the holder 218. This state is shown in FIG10f.

[0114] Subsequently, the frame 208 is rotated by 120° (clockwise in the figure) about the rotation axis 212 so that the second holder 218', the second receiving device 54' and the second brake disk 12' face the drive spindle 132. This state is shown in Fig. 10g.

[0115] Subsequently, referring to FIG. 10 h , the second receiving device 54 ′ and the second brake disk 12 ′ may be connected to the drive spindle 132 in the above-described manner, so that the second brake disk 12 ′ may be ground.

[0116] During the grinding of the second brake disc 12', the first brake disc 12 that has been ground can be removed from the first receiving device 54. To this end, the frame 208 is rotated 150° (clockwise in the figure) about the rotation axis 212 so that the first receiving device 54 is arranged in the area of ​​the actuating drive 226. By actuating the actuating device 82, the brake disc 12 can be removed from the receiving device, and then a new brake disc 12 can be provided.

[0117] exist Fig.11 , other components of the retainer 218, the locking device 222, and the release device 224 are shown.

[0118] The holding portion 220 of the holder 218 has a receiving space 228 for receiving at least a portion of the extrusion body 74 of the receiving device 54. The receiving space 228 is adjacent to a hole 230, which serves as a passage for the free end of the actuating device 82 of the receiving device 54. In this way, the actuating drive 226 can interact with the actuating device 82 while the receiving device 54 is held on the holding portion 220.

[0119] The locking device 222 has a movable form-fitting element 232, which is formed, for example, in the form of a pin and is fixed to a plate 234. The plate 234 is prestressed by a spring 236 in the direction of the locked state of the locking device 222. In the locked state, the form-fitting element 232 penetrates into the receiving space 228 and interacts with a corresponding form-fitting receptacle of the displacement body 74.

[0120] To switch the locking device 222 , the release element 238 of the release device 224 presses the plate 234 out of the receiving space 228 against the action of the spring 236 , thereby releasing the form fit with the displacement body 74 .

[0121] The release element 238 is formed, for example, by a piston which can be acted upon by the pressure in the cylinder 240. Additionally or alternatively, a handle 242 connected to the plate 234 is provided which allows the plate 234 to be moved manually against the action of the spring 236.

Claims

1. A brake disc arrangement (86) comprising a brake disc (12) having a friction ring (14) and a brake disc hub (16), the brake disc hub having an opening (18) concentric to a central brake disc axis (20), the opening being delimited by a border (56) closed on the peripheral side, characterized in that A receiving device (54), the receiving device having a central receiving axis (58) and a centering device (60), the centering device having at least one centering surface (66), wherein the centering device (60) can be inserted into the opening (18) of the brake disc hub (18) in the inserted state of the centering device (60) and interact with the boundary (56) of the opening (18) and / or with a surface portion (156) of the brake disc hub (16) adjacent to the boundary (56) in a force-fit and / or form-fit manner in a fixed state, and fix the brake disc (12) to the receiving device (54), wherein the receiving device (54) has a pressing body (74), the pressing body having a first pressing surface (76) for pressing against an annular first end surface (78) of the brake disc hub (16).

2. The brake disc arrangement (86) according to claim 1, characterized in that The fixing is effective during transport with the central brake disc axis (20) oriented horizontally.

3. The brake disc arrangement (86) according to any one of the preceding claims, characterized in that The centering device (60) is pretensioned in the direction of the fixed state and / or the fixed state is a rest state of the receiving device (54).

4. The brake disc arrangement (86) according to claim 3, characterized in that The receiving device (54) has a spring (72) for acting on the centering device (60).

5. The brake disc arrangement (86) according to any one of the preceding claims, characterized in that The receiving device (54) has an actuating device (82) for transferring the centering device (60) from the fixed state to the inserted state.

6. The brake disc arrangement (86) according to any one of the preceding claims, characterized in that The receiving device (54) has an actuating portion (96) having an actuating surface (98) for actuation by an external clamp (100), wherein the actuating surface (98) preferably extends concentrically with the receiving axis (58) and in particular has a diameter which is at most half the outer diameter of the friction ring (14).

7. The brake disc arrangement (86) according to claim 6, characterized in that The actuation portion (96) is arranged on a side of the displacement body (74) facing away from the first displacement surface (76).

8. The brake disc arrangement (86) according to any one of the preceding claims, characterized in that The receiving device (54) has a central shaft (88) which is connected to the extrusion body (74) and the free end of which projects out of the centering device (60).

9. The brake disc arrangement (86) according to claim 8, characterized in that The free end has at least one coupling portion (92) for producing a positive fit and / or a non-positive fit with a coupling counterpart (142) provided by a spindle drive (132) acting along the shaft axis (90) of the central shaft (88).

10. A drive system (26) for rotationally driving a brake disc (12), wherein: The drive system (26) has a spindle drive (132), which has a second extrusion surface (138) that can be pressed against an annular second end surface (80) of the brake disc hub (16) facing away from the first end surface (78), wherein the drive system also includes a brake disc arrangement structure (86) according to any one of claims 1 to 9.

11. The drive system (26) according to claim 10, characterized in that The drive system (26) includes a brake disc arrangement (86) according to claim 9 and a connecting partner (142), which interacts with the connecting portion (92) of the center shaft (88) and applies a tensioning force to the center shaft (88) so that the first extrusion surface (76) is pressed against the first end surface (78) of the brake disc hub and the second extrusion surface (138) is pressed against the second end surface (80) of the brake disc hub (16).

12. The drive system (26) according to claim 11, characterized in that The first extrusion surface (76) and the second extrusion surface (138) overlap in a radial direction of the shaft axis (90) relative to the central axis (88).

13. The drive system (26) according to any one of claims 10 to 12, further comprising a manipulation device (200), the manipulation device having a frame (208), on which at least two retaining elements (218, 218') are arranged in a distributed manner along a circumference (214), each of which has a locking device (222) for releasably arranging the receiving device (54), wherein: In order to move the holder (218, 218') and selectively position a specific holder (218, 218') to which a specific receiving device (54) and a brake disk (12) are fixed, the frame (208) can be driven rotationally relative to the spindle drive (132) about a frame axis (212) by a rotary drive (210), wherein the frame axis (212) is oriented perpendicularly to the spindle axis (140) of the spindle drive (132).

14. The drive system (26) according to claim 13, characterized in that The frame (208) is arranged on a carriage (206) which can be driven by a carriage drive relative to a carriage support (202) along a carriage axis (204) in a direction towards the spindle drive (132) and in an opposite direction.

15. The drive system (26) according to claim 13 or 14, characterized in that A receiving device (54) for receiving a brake disc (12) having a first brake disc geometry is arranged on at least one first retaining member (218) or on at least two first retaining members (218), and a receiving device (54) for receiving a brake disc (12) having a second brake disc geometry different from the first brake disc geometry is arranged on at least one second retaining member (218') or on at least two second retaining members (218').

16. The drive system (26) according to any one of claims 13 to 15, characterized in that The handling device (200) has an actuating drive (226) for actuating an actuating device (82) of a receiving device (54), the actuating drive being arranged in a particularly non-rotatable manner relative to the frame axis (212).

17. A drive system (26) according to any one of claims 13 to 16, characterized in that The actuating device (200) has a release drive (224) for releasing the locking device (222), which is arranged in a particularly non-rotatable manner relative to the frame axis (212).

18. A double-sided grinding machine (24) having two grinding wheels (120, 122) and having a drive system (26) according to any one of claims 10 to 16.

19. The double-sided grinding machine (24) according to claim 18, characterized in that The grinding wheels (120, 122) can be driven in rotation about a horizontally oriented grinding wheel axis.

20. A method for machining a brake disc (12), the method comprising: - using a brake disc arrangement (86) according to claim 9 to transfer a brake disc (12) from a brake disc supply to a drive system (26) according to any one of claims 11 or 12, - connecting the coupling part (92) of the free end of the central shaft (88) of the receiving device (54) to the coupling counterpart (142) of the spindle drive (132) of the drive system (26), - applying a tensioning force to the coupling counterpart (142) and pressing the first pressing surface (76) against the first end surface (78) of the brake disc hub (16), and pressing the second pressing surface (138) against the second end surface (80) of the brake disc hub (16), - positioning the friction ring (14) in a working chamber (124) of a double-sided grinding machine (24) according to claim 13 or 14, - Grinding the friction surface of the friction ring (14) while maintaining the pressing contact of the pressing surface (76, 138).

Images