Hub carrying clamp

Abstract

The invention relates to a hub carrying clamp. The hub carrying clamp comprises a base; the clamping jaw mechanism comprises at least three clamping pieces connected to the base, the at least three clamping pieces are evenly distributed around the first axis in the circumferential direction at intervals, the distances between the at least three clamping pieces and the first axis are the same, and the clamping pieces can move close to or away from the first axis in the direction perpendicular to the first axis; the clamping jaw mechanism further comprises a clamping driving assembly connected with the at least three clamping pieces and the base, and the clamping driving assembly is used for driving the at least three clamping pieces to synchronously get close to or synchronously get away from the first axis to move. The suction cup mechanism comprises at least three fixed suction cups connected to the base, and the at least three fixed suction cups are distributed around the second axis in the circumferential direction at intervals. Through the integrated design of the clamping jaw mechanism and the suction cup mechanism, the hub and the partition plate can be carried and transferred through the robot, so that manual participation is not needed in the whole feeding process, the feeding work can be continuously carried out, the machining efficiency is improved, and the safety is improved.

Description

Technical Field

[0001] The invention relates to the field of clamping claw technology, and in particular to a wheel hub handling clamp. Background Art

[0002] During the production of automobile wheels, the semi-finished products after machining need to go through cleaning and a series of semi-finished product inspection processes (such as dynamic imbalance, helium inspection, etc.). During the cleaning process, the semi-finished wheel hubs need to pass through the cleaning machine one by one to complete the cleaning.

[0003] The finished wheel hub semi-finished products are usually placed on pallets and transported by forklifts to the loading station of the cleaning process conveyor line. Since the automobile wheel hub is heavy, it takes a lot of physical effort to carry it to the line manually during the cleaning process, and there are certain safety risks. The use of robot automated handling can effectively solve this problem. When the robot transports the wheel hub, it is necessary to design a gripper that matches the wheel hub. The robot controls the movement of the gripper to grab and transfer the wheel hub to complete the loading of the wheel hub.

[0004] When the wheel hub is transferred from the machining process to the cleaning process, in order to improve the transfer efficiency, the semi-finished wheel hub is usually placed in multiple layers on a pallet. In order to avoid damage to the wheel hub surface caused by direct contact between the two layers of wheel hubs, partitions are set between the two layers of wheel hubs. The presence of the partition will interfere with the gripper's gripping of the lower layer of wheel hub. Therefore, after the robot transfers each layer of wheel hub, the partition needs to be manually removed, resulting in discontinuity in the robot's loading process and affecting processing efficiency. Summary of the invention

[0005] Based on the above description, the present invention provides a wheel hub handling fixture to solve the problem that the presence of the partition will interfere with the clamping claws to clamp the lower layer of the wheel hub, and the partition needs to be manually pulled out after the robot transfers each layer of the wheel hub, resulting in discontinuity in the robot's loading process and affecting processing efficiency.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] The present application provides a wheel hub handling fixture, and the technical solution adopted is as follows:

[0008] A wheel hub handling fixture, comprising:

[0009] Pedestal;

[0010] A clamping mechanism, comprising at least three clamping members connected to the base, the at least three clamping members being evenly spaced around the first axis, the at least three clamping members being at the same distance from the first axis, the clamping members being movable toward or away from the first axis in a direction perpendicular to the first axis, the clamping mechanism further comprising a clamping drive assembly connecting the at least three clamping members to the base, the clamping drive assembly being used to drive the at least three clamping members to synchronously move toward / away from the first axis;

[0011] The suction cup mechanism comprises at least three fixed suction cups connected to the base, wherein the at least three fixed suction cups are circumferentially spaced and distributed around the second axis.

[0012] Preferably, the suction cup mechanism also includes at least three movable suction cups connected to the base, and the at least three movable suction cups are circumferentially spaced around the second axis. The movable suction cup is connected to the base through a connecting rod, and the axis of the connecting rod is perpendicular to the second axis. One end of the connecting rod is connected to the base, and the other end extends away from the second axis and is connected to the movable suction cup. The connecting rod can move along its axial direction relative to the base.

[0013] Preferably, the suction cup mechanism further includes a suction cup driving assembly, wherein the suction cup driving assembly connects the plurality of connecting rods and the base, and the suction cup driving assembly is used for driving the plurality of connecting rods to move synchronously toward / synchronously away from the base along the axial direction.

[0014] Preferably, the suction cup driving assembly comprises a driving member and a driving shaft coaxial with the second axis, the driving shaft is rotatably connected to the base, the driving shaft is provided with two driving gears coaxial therewith, the two driving gears are distributed axially along the driving shaft, and the driving member is provided on the base for driving the driving shaft to rotate;

[0015] There are four movable suction cups, and the connecting rods are connected to driven racks arranged along the axial direction thereof. Among the four connecting rods, two connecting rods form a group, and the two connecting rods in a group are parallel to each other and located on opposite sides of a driving gear in the radial direction. The driven racks on the two connecting rods in a group are meshed with the driving gear between the two connecting rods.

[0016] Preferably, the clamping drive assembly comprises:

[0017] A turntable, which is coaxial with the first axis and rotatably connected to the base, at least three of the clamping members are respectively connected to the turntable through connecting rods, the connecting rods and the clamping members can rotate relative to each other and can rotate relative to the turntable, and the rotation axes are all parallel to the first axis, suitable for driving the clamping members to move relative to the base through the connecting rods when the turntable rotates;

[0018] A driving structure is connected to the base and is used to drive the turntable to rotate.

[0019] Preferably, the driving structure includes an active rack, a active gear and a cylinder, the turntable is connected to the base via a coaxial mounting shaft, the mounting shaft can rotate relative to the base, the active gear is coaxially and fixedly connected to the mounting shaft, the active rack is arranged in a direction perpendicular to the first axis and meshes with the active gear, the active rack can move relative to the base along its length direction, and the cylinder connects the active rack and the base and is used to drive the active rack to move.

[0020] Preferably, the clamping member comprises a clamping roller, an axis of which is parallel to the first axis, and a plurality of annular grooves opened along the circumferential direction are provided on an outer wall of the clamping roller, and the plurality of annular grooves are distributed at intervals along the axial direction of the clamping roller.

[0021] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects:

[0022] 1. The present application sets a clamping mechanism and a suction cup mechanism. At least three clamping members of the clamping mechanism are used to clamp the wheel hub. When in use, the robot arm controls the base to move until the wheel hub is located between the at least three clamping members. The clamping drive assembly drives at least three clamping members to move synchronously close to the first axis. At least three clamping members can cooperate to clamp the wheel hub so as to transfer the wheel hub by controlling the movement of the base by the robot. By integrating the suction cup mechanism on the base, at least three fixed suction cups are used to absorb and grasp the partition, and the partition is moved away by controlling the movement of the base by the robot so that the lower layer of the wheel hub can be clamped by the clamping mechanism. The integrated design of the clamping mechanism and the suction cup mechanism can be used by the robot to carry and transfer the wheel hub and the partition. Therefore, the entire loading process does not require human participation, and the loading work can be carried out continuously, which improves processing efficiency and safety.

[0023] 2. The suction cup mechanism of the present application is provided with at least three movable suction cups. The movable suction cups cooperate with the fixed suction cups to increase the coverage area of ​​the suction cup mechanism, so that a larger area of ​​partitions can be stably grasped. At the same time, the connecting rod connecting the movable suction cup and the base can be moved axially relative to the base. On the one hand, the distance between at least three movable suction cups and the base can be adjusted to adjust the coverage area of ​​the suction cup mechanism so as to more stably grasp partitions of different specifications. On the other hand, when the wheel hub is grasped by the clamping mechanism, the connecting rod and the movable suction cup can be moved close to the base to reduce the distribution range of the movable suction cup and reduce the space occupied by the suction cup mechanism, thereby reducing the movement amplitude of the robot and improving the stability and safety of the feeding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A schematic diagram of the structure of a wheel hub handling fixture provided by an embodiment of the present invention, wherein a connecting rod of a suction cup mechanism is fixedly connected to a base by bolts;

[0025] Figure 2 A schematic structural diagram of a clamping mechanism in a wheel hub handling fixture provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of a suction cup mechanism in a wheel hub handling fixture provided by an embodiment of the present invention, wherein a connecting rod of the suction cup mechanism is fixedly connected to a base by bolts;

[0027] Figure 4 A schematic structural diagram of a suction cup mechanism in a wheel hub handling fixture provided in an embodiment of the present invention, wherein a connecting rod of the suction cup mechanism can move relative to a base along its axial direction.

[0028] Description of reference numerals:

[0029] 1. Base; 11. First mounting plate; 12. Second mounting plate; 13. Connecting plate; 2. Clamping mechanism; 21. Clamping member; 22. First guide rail; 23. First slider; 24. Turntable; 25. Connecting rod; 26. Driving structure; 261. Active rack; 262. Active gear; 263. Cylinder; 3. Suction cup mechanism; 31. Fixed suction cup; 32. Movable suction cup; 33. Connecting rod; 34. Driving shaft; 35. Driving gear; 36. Driven rack. DETAILED DESCRIPTION

[0030] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0032] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0033] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0034] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0035] Reference Figure 1-4 As shown, an embodiment of the present application provides a wheel hub handling fixture, which includes a base 1, a clamping claw mechanism 2 and a suction cup mechanism 3.

[0036] Reference Figure 1-2 As shown, the clamping mechanism 2 is used to grasp the wheel hub, including at least three clamping members 21 connected to the base 1, the at least three clamping members 21 are evenly spaced around the first axis, at least three clamping members 21 are at the same distance from the first axis, the clamping members 21 can move toward or away from the first axis in a direction perpendicular to the first axis, the clamping mechanism 2 also includes a clamping drive assembly connecting the at least three clamping members 21 and the base 1, the clamping drive assembly is used to drive the at least three clamping members 21 to move synchronously toward / synchronously away from the first axis.

[0037] Reference Figure 1-2As shown, the base 1 includes a first mounting plate 11, and the clamping mechanism is mounted on the first mounting plate 11. The plane of the first mounting plate 11 is perpendicular to the first axis. At least three clamping members 21 are distributed on a circle with the projection of the first axis on the first mounting plate 11 as the center, and the clamping members 21 can move closer to or away from the center, so that at least three clamping members 21 can contact the wheel hub when grabbing the wheel hub, thereby stably clamping the wheel hub. Specifically, the clamping member 21 is connected to the first mounting plate 11 through a connecting structure, and the connecting structure includes a first guide rail 22 and a first slider 23 adapted to the first guide rail 22. Each first guide rail 22 is arranged along the moving direction of the clamping member 21 correspondingly connected thereto, the first guide rail 22 is fixed on the first mounting plate 11, the first slider 23 is assembled on the first guide rail 22, and the clamping member 21 is fixed on the first slider 23, so as to limit the moving direction of the clamping member 21 and guide the clamping member 21 through the first guide rail 22 and the first slider 23.

[0038] Reference Figure 1-2 As shown, further, the clamping drive assembly includes a turntable 24 and a driving structure 26. The turntable 24 is coaxial with the first axis and is rotatably connected to the base 1. At least three clamping members 21 are respectively connected to the turntable 24 through connecting rods 25. The connecting rods 25 and the clamping members 21 can rotate relative to each other and can rotate relative to the turntable 24. The rotating axes are parallel to the first axis, which is suitable for driving the clamping members 21 to move relative to the base 1 through the connecting rods 25 when the turntable 24 rotates. The driving structure 26 is connected to the base 1 to drive the turntable 24 to rotate.

[0039] Reference Figure 1-2 As shown, specifically, the turntable 24 is parallel to the first mounting plate 11 and is located on one side of the first mounting plate 11. The turntable 24 is connected to the first mounting plate 11 through a coaxial mounting shaft, which passes through the first mounting plate 11 and is rotatably connected to the base 1 through a bearing. The driving structure 26 is arranged on the side of the first mounting plate 11 away from the turntable 24, and includes an active rack 261, an active gear 262 and a cylinder 263. The active gear 262 is coaxially fixedly connected to the mounting shaft, the active rack 261 is arranged in a direction perpendicular to the first axis and meshes with the active gear 262, the active rack 261 can move relative to the base 1 along its length direction, and the cylinder 263 connects the active rack 261 and the base 1 and is used to drive the active rack 261 to move. The length direction of the active rack 261 is parallel to the plane of the first mounting plate 11, the cylinder 263 is fixed on the first mounting plate 11, and its piston rod is fixedly connected to the active rack 261 through a connecting block, so that the active rack 261 is driven to move by the extension and contraction of the cylinder 263, and the mounting shaft and the turntable 24 are driven to rotate by the cooperation of the active rack 261 and the active gear 262. When the turntable 24 rotates, at least three clamping members 21 are driven to move synchronously through at least three connecting rods 25, thereby realizing the function of clamping and loosening the wheel hub.

[0040] Reference Figure 1-2 As shown, further, the clamping member 21 can be designed as required to ensure that it can stably clamp the wheel hub. In this embodiment, the clamping member 21 is illustrated as a clamping roller. The axis of the clamping roller is parallel to the first axis, that is, perpendicular to the plane of the first mounting plate 11. The outer wall of the clamping roller is provided with a plurality of annular grooves opened along the circumferential direction, and the plurality of annular grooves are distributed at intervals along the axial direction of the clamping roller. When the clamping roller contacts the wheel hub, when at least three clamping rollers cooperate to clamp the wheel hub, the edge of the wheel hub is embedded in the annular groove, thereby limiting the movement of the wheel hub relative to the clamping roller in the axial direction of the clamping roller, so as to stably clamp the wheel hub and improve the stability of the clamping mechanism 2 when grasping the wheel hub. In this embodiment, three clamping members 21 are provided for illustration.

[0041] Reference Figure 1 and Figure 3 As shown, the suction cup mechanism 3 includes at least three fixed suction cups 31 connected to the base 1, and the at least three fixed suction cups 31 are circumferentially spaced around the second axis. Specifically, the base 1 also includes a second mounting plate 12, the plane of the second mounting plate 12 is perpendicular to the second axis, and the fixed suction cup 31 is fixed to one side of the second mounting plate 12. In this embodiment, the second mounting plate 12 and the first mounting plate 11 are parallel to each other, the first axis and the second axis coincide, the first mounting plate 11 and the second mounting plate 12 are fixedly connected by a connecting plate 13, the connecting plate 13 and the first mounting plate 11 and the second mounting plate 12 are all perpendicular, and bolt holes for connecting it to the robot are provided on the connecting plate 13, and the fixed suction cup 31 is located on the side of the second mounting plate 12 away from the first mounting plate 11. In this embodiment, four fixed suction cups 31 are provided for illustration.

[0042] By integrating the clamping mechanism 2 and the suction cup mechanism 3 on the base 1, at least three fixed suction cups 31 are used to absorb and grasp the partition, and the robot controls the movement of the base 1 to move the partition away so that the lower layer of the wheel hub can be clamped by the clamping mechanism 2. The integrated design of the clamping mechanism 2 and the suction cup mechanism 3 can be used by the robot to carry and transfer the wheel hub and the partition. Therefore, the entire loading process does not require manual participation, and the loading work can be carried out continuously, thereby improving processing efficiency and safety.

[0043] Reference Figure 1 and Figure 3As shown, the suction cup mechanism 3 also includes at least three active suction cups 32 connected to the base 1, and the at least three active suction cups 32 are circumferentially spaced around the second axis. The active suction cup 32 is connected to the base 1 through a connecting rod 33, and the axis of the connecting rod 33 is perpendicular to the second axis. One end of the connecting rod 33 is connected to the base 1, and the other end extends away from the second axis and is connected to the active suction cup 32. Specifically, the active suction cup 32 is connected to the second mounting plate 12. The provision of at least three active suction cups 32 can increase the coverage area of ​​the suction cup mechanism 3, so that a larger size of partition can be grasped, and the stability when grasping the partition is improved to ensure that the partition is removed.

[0044] Reference Figure 1 and Figure 3 As shown, when the movable suction cup 32 is installed on the connecting rod 33, an adjustment groove is opened on the connecting rod 33 along its length direction, and the mounting tube of the movable suction cup 32 passes through the adjustment groove. The external thread of the mounting tube is equipped with two clamping bolts, and the two clamping bolts are located on both sides of the connecting rod 33 and abut against the connecting rod 33, so that the mounting tube of the movable suction cup 32 is fixed relative to the connecting rod 33 by clamping the connecting rod 33 with the two clamping bolts, and the suction cup is fixed on the connecting rod 33, and the position of the movable suction cup 32 can be adjusted by loosening the clamping bolts to move the mounting tube in the adjustment groove.

[0045] Reference Figure 1 and Figure 3 As shown, in one embodiment, the connecting rod 33 is configured to be fixedly connected to the base 1 by bolts.

[0046] Reference Figure 4 As shown, in another embodiment, the connecting rod 33 is configured to be movable relative to the base 1 along its axial direction, that is, the connecting rod 33 can be movable relative to the second mounting plate 12 along its axial direction. At the same time, the suction cup mechanism 3 also includes a suction cup drive assembly, which connects multiple connecting rods 33 and the second mounting plate 12, and the suction cup drive assembly is used to drive multiple connecting rods 33 to move synchronously toward / away from the second mounting plate 12 along the axial direction. In this embodiment, when the wheel hub is grasped by the clamping claw mechanism 2, the connecting rod 33 and the movable suction cup 32 can be moved close to the base 1 to reduce the distribution range of the movable suction cup 32 and the extension length of the connecting rod 33, reduce the space occupied by the suction cup mechanism 3, thereby reducing the movement amplitude of the robot and improving the stability and safety of the feeding work.

[0047] Specifically, a second guide rail (not shown in the figure) can be set on the connecting rod 33 along its length direction, and a second slider (not shown in the figure) adapted to the second guide rail can be set on the second mounting plate 12, so that the connecting rod 33 can be movably installed on the second mounting plate 12 through the cooperation of the second guide rail and the second slider.

[0048] Reference Figure 4As shown, the suction cup drive assembly includes a drive member and a drive shaft 34 coaxial with the second axis. The drive shaft 34 is rotatably connected to the base 1. The drive shaft 34 is provided with two drive gears 35 coaxial therewith. The two drive gears 35 are distributed axially along the drive shaft 34. The drive member is provided on the base 1 to drive the drive shaft 34 to rotate. There are four movable suction cups 32. The connecting rod 33 is connected to a driven rack 36 arranged along its axial direction. Among the four connecting rods 33, two connecting rods 33 form a group. The two connecting rods 33 in a group are parallel to each other and located on opposite sides of a drive gear 35 in the radial direction. The driven racks 36 on the two connecting rods 33 in a group are meshed with the drive gear 35 between the two connecting rods 33.

[0049] Reference Figure 4 As shown, specifically, the connecting rod 33 is arranged on the side of the second mounting plate 12 away from the first mounting plate 11, the driving shaft 34 passes through the second mounting plate 12, and the driving member is arranged on the side of the second mounting plate 12 close to the first mounting plate 11, and the driving member adopts a motor. When the motor drives the driving shaft 34 to rotate, the four connecting rods 33 can be driven to move synchronously close to or away from the second mounting plate 12 through the cooperation of the driving gear 35 and the driven rack 36; after a partition is removed by the suction cup mechanism 3, the control system controls the motor to start and drive the four connecting rods 33 to move close to the second mounting plate 12, so as to reduce the space occupied by the suction cup mechanism 3 and reduce the movement amplitude when the robot moves the clamping claw mechanism 2 to grab the wheel hub and move; when it is necessary to grab the partition, the control system controls the motor to start and drive the four connecting rods 33 to move away from the second mounting plate 12, so as to increase the coverage area of ​​the suction cup mechanism 3 so as to stably grab the partition and realize automatic control.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel hub handling fixture, characterized in that: include: Base (1); A clamping mechanism (2), comprising at least three clamping members (21) connected to the base (1), the at least three clamping members (21) being evenly spaced and distributed around a first axis, the at least three clamping members (21) being at the same distance from the first axis, the clamping members (21) being movable toward or away from the first axis in a direction perpendicular to the first axis, the clamping mechanism (2) further comprising a clamping drive assembly connecting the at least three clamping members (21) and the base (1), the clamping drive assembly being used to drive the at least three clamping members (21) to synchronously move toward or away from the first axis; The suction cup mechanism (3) comprises at least three fixed suction cups (31) connected to the base (1), wherein the at least three fixed suction cups (31) are circumferentially spaced and distributed around the second axis.

2. The wheel hub handling fixture according to claim 1, characterized in that: The suction cup mechanism (3) further comprises at least three movable suction cups (32) connected to the base (1), wherein the at least three movable suction cups (32) are circumferentially spaced and distributed around the second axis, and the movable suction cups (32) are connected to the base (1) via a connecting rod (33), wherein the axis of the connecting rod (33) is perpendicular to the second axis, one end of the connecting rod (33) is connected to the base (1), and the other end extends in a direction away from the second axis and is connected to the movable suction cup (32), and the connecting rod (33) can move relative to the base (1) along its axial direction.

3. The wheel hub handling fixture according to claim 2, characterized in that: The suction cup mechanism (3) further comprises a suction cup drive assembly, wherein the suction cup drive assembly connects the plurality of connecting rods (33) and the base (1), and the suction cup drive assembly is used to drive the plurality of connecting rods (33) to move synchronously toward / away from the base (1) along the axial direction.

4. The wheel hub handling fixture according to claim 3, characterized in that: The suction cup driving assembly comprises a driving member and a driving shaft (34) coaxial with the second axis, the driving shaft (34) is rotatably connected to the base (1), the driving shaft (34) is provided with two driving gears (35) coaxial with the driving shaft (34), the two driving gears (35) are distributed axially along the driving shaft (34), and the driving member is provided on the base (1) for driving the driving shaft (34) to rotate; Four movable suction cups (32) are provided, and the connecting rods (33) are connected to driven racks (36) arranged along the axial direction thereof. Among the four connecting rods (33), two connecting rods (33) form a group, and the two connecting rods (33) in a group are parallel to each other and located on opposite sides of a driving gear (35) in a radial direction. The driven racks (36) on the two connecting rods (33) in a group are meshed with the driving gear (35) between the two connecting rods (33).

5. The wheel hub handling fixture according to claim 1, characterized in that: The clamping drive assembly comprises: a turntable (24) which is coaxial with the first axis and rotatably connected to the base (1); at least three clamping members (21) are respectively connected to the turntable (24) via connecting rods (25); the connecting rods (25) and the clamping members (21) are rotatable relative to each other and are rotatable relative to the turntable (24); and the rotation axes are parallel to the first axis, and are suitable for driving the clamping members (21) to move relative to the base (1) via the connecting rods (25) when the turntable (24) rotates; A driving structure (26) is connected to the base (1) and is used to drive the turntable (24) to rotate.

6. The wheel hub handling fixture according to claim 5, characterized in that: The driving structure (26) comprises an active rack (261), an active gear (262) and a cylinder (263); the turntable (24) is connected to the base (1) via a coaxial mounting shaft; the mounting shaft can rotate relative to the base (1); the active gear (262) is coaxially fixedly connected to the mounting shaft; the active rack (261) is arranged in a direction perpendicular to the first axis and meshes with the active gear (262); the active rack (261) can move relative to the base (1) along its length direction; the cylinder (263) connects the active rack (261) and the base (1) and is used to drive the active rack (261) to move.

7. The wheel hub handling fixture according to claim 1, characterized in that: The clamping member (21) comprises a clamping roller, the axis of which is parallel to the first axis, and a plurality of annular grooves opened along the circumferential direction are arranged on the outer wall of the clamping roller, and the plurality of annular grooves are distributed at intervals along the axial direction of the clamping roller.

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