Spin riveting device for hub bearing end face spline machining

Abstract

The utility model discloses a spin riveting device for hub bearing end face spline processing, which comprises a frame, a lifting mechanism, a spin riveting mechanism and a rotary fixture mechanism, the lifting mechanism drives a lead screw through a motor to drive the spin riveting mechanism to lift, the spin riveting mechanism comprises a spin riveting head and a mounting seat, and the rotary fixture mechanism drives a fixture table to rotate through the motor. A clamping module is arranged on the device, synchronous opening and closing of clamping jaws are achieved through transmission of a worm gear, a worm and a lead screw so as to clamp a hub bearing inner ring, the device utilizes a driving rack of a lifting mechanism to be in linkage with a transmission gear of the clamping module, synchronous actions of lifting and clamping are achieved, independent driving sources are reduced, and a positioning column arranged on a clamp table penetrates through a hub flange plate hole. The device is low in failure rate and suitable for automatic machining of the spline on the end face of the hub bearing.

Description

Technical Field

[0001] This utility model relates to the field of riveting device technology, specifically a riveting device for machining splines on the end face of wheel hub bearings. Background Technology

[0002] Wheel hub bearings are core components of automotive transmission systems. The machining quality of the spline on the inner ring end face directly affects the fitting accuracy between the wheel hub unit and the drive shaft, as well as the reliability of power transmission. Currently, the machining of the spline on the end face of wheel hub bearings mainly adopts the riveting process. This process forms a high-precision spline structure on the bearing end face through rotational extrusion. However, existing riveting devices still have many technical problems in practical applications, specifically as follows:

[0003] Traditional riveting devices typically use electric, pneumatic, or hydraulic drives for their clamping mechanisms, requiring additional motors, cylinders, solenoid valves, and control systems to achieve the opening and closing of the grippers. This design not only increases the complexity of the equipment but also leads to frequent malfunctions and high maintenance costs due to issues such as the easy aging of seals in pneumatic components and the easy leakage of hydraulic systems. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a riveting device that reduces the failure rate and is more durable.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a riveting device for machining splines on the end face of a wheel hub bearing, comprising a device frame and a lifting mechanism, a riveting mechanism, and a rotating clamping mechanism disposed on the device frame. The lifting mechanism includes a lifting motion table capable of lifting and lowering, and the riveting mechanism is fixedly connected to the lifting motion table.

[0006] The bottom of the riveting mechanism is provided with the rotary clamping mechanism, which includes a drive base, a second motor, a clamping table, and a clamping module. The clamping table is rotatably connected to the drive base, and the second motor is fixedly connected inside the drive base. The second motor is poweredly connected to the clamping table, and the clamping module is provided on the clamping table.

[0007] The clamping module includes a second lead screw, a third lead screw, grippers, a worm, a worm wheel, and a transmission gear. Two sets of clamping platforms are slidably connected to the clamping table. Each set of clamping platforms is fixedly connected to a set of grippers. The second lead screw is threadedly connected to one set of clamping platforms, and the third lead screw is threadedly connected to the other set of clamping platforms. The second lead screw and the third lead screw are fixedly connected through a connecting shaft. An input shaft is fixedly connected to the end of the second or third lead screw. The worm wheel is fixedly connected to the input shaft. The worm is rotatably connected to the clamping platform. The worm meshes with the worm wheel. The transmission gear is fixedly connected to the worm.

[0008] A drive rack is fixedly connected to the lifting platform, and the drive rack cooperates with the transmission gear.

[0009] In the above technical solution, the lifting mechanism includes a sliding column, a first lead screw, and a first motor. The sliding column is fixedly connected to the device frame, and the lifting motion platform is slidably connected to the sliding column. The first lead screw is threadedly connected to the lifting motion platform, and the first motor is fixedly connected to the device frame. The first motor is poweredly connected to the first lead screw.

[0010] In the above technical solution, the fixture table is provided with a sliding groove, and the clamping table is slidably connected to the sliding groove.

[0011] In the above technical solution, multiple sets of positioning pins are fixedly connected to the fixture table, and the positioning pins pass through the holes on the wheel hub flange.

[0012] In the above technical solution, the clamping surface of the gripper mates with the outer contour of the inner ring of the wheel hub bearing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When machining the spline on the end face of the inner ring of a wheel hub bearing, the inner ring of the wheel hub bearing can be placed on a fixture table and positioned by a positioning pin. Then, the lifting mechanism operates, causing the lifting motion table to drive the riveting mechanism to descend. At this time, the drive rack descends, driving the transmission gear to rotate, causing the second and third lead screws to rotate. In this way, the two sets of clamping tables can drive the two sets of jaws to move closer together, thereby clamping and fixing the inner ring of the wheel hub bearing. Afterward, the lifting mechanism continues to drive the riveting mechanism to descend, and at the same time, the second motor drives the fixture table and the wheel hub bearing on it. The inner ring rotates, and splines can be machined on the end face of the inner ring of the wheel hub bearing through the riveting mechanism. After machining, the second motor drives the clamping table to return to its original position. Then the lifting mechanism works, and when the lifting table drives the riveting mechanism to rise, it drives the transmission gear to rotate through the drive rack. At this time, the second lead screw and the third lead screw rotate, and the two sets of clamping tables drive the jaws to move away from each other, thereby loosening the inner ring of the wheel hub bearing. Through the above structure, the power of the lifting mechanism combined with the mechanical structure can be fully utilized to provide the required power for the clamping module, which greatly reduces the overall drive source of the device, reduces the failure rate, and makes the device more durable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of another state of the present invention;

[0016] Figure 3 for Figure 2 Detailed structural diagram of part a;

[0017] Figure 4 This is a schematic diagram of the lifting mechanism in this utility model;

[0018] Figure 5 This is a schematic diagram of the clamping module in this utility model clamping the inner ring of the wheel hub bearing.

[0019] Figure 6 This is a schematic diagram of the structure of the clamping module when it loosens the inner ring of the wheel hub bearing in this utility model;

[0020] Figure 7 This is an exploded structural diagram of the rotary clamp mechanism in this utility model;

[0021] Figure 8 for Figure 7 Detailed structural diagram of part b in the middle.

[0022] In the diagram: 100 Device frame, 200 Lifting mechanism, 201 Lifting motion platform, 202 Sliding column, 203 First lead screw, 204 First motor, 300 Riveting mechanism, 400 Rotary clamping mechanism, 401 Drive base, 402 Second motor, 403 Clamping table, 404 Clamping module, 4041 Second lead screw, 4042 Third lead screw, 4043 Gripper, 4044 Worm gear, 4045 Worm wheel, 4046 Transmission gear, 4047 Connecting shaft, 4048 Input shaft, 500 Drive rack, 600 Positioning column, 700 Hub flange. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figures 1-8 A riveting device for machining splines on the end face of a wheel hub bearing includes a device frame 100 and a lifting mechanism 200, a riveting mechanism 300, and a rotating clamping mechanism 400 mounted on the device frame 100. The lifting mechanism 200 includes a lifting motion table 201, a sliding column 202, a first lead screw 203, and a first motor 204. Specifically, the sliding column 202 is fixedly connected to the device frame 100, the lifting motion table 201 is slidably connected to the sliding column 202, the first lead screw 203 is threadedly connected to the lifting motion table 201, and the first motor 204 is fixedly connected to the device frame 100. The first motor 204 is poweredly connected to the first lead screw 203, so that the first motor 204 can drive the first lead screw 203 to rotate, thereby causing the lifting motion table 201 to move up and down on the sliding column 202.

[0025] Furthermore, a riveting mechanism 300 is fixedly connected to the lifting motion platform 201. The riveting mechanism 300 includes a riveting mounting base and a riveting head fixedly connected to the riveting mounting base. The lifting motion platform 201 can synchronously drive the riveting mechanism 300 to lift synchronously.

[0026] In addition, the bottom of the riveting mechanism 300 is also provided with a rotating clamping mechanism 400. Specifically, the rotating clamping mechanism 400 includes a drive base 401, a second motor 402, a clamping table 403, and a clamping module 404. That is, the clamping table 403 is rotatably connected to the drive base 401, and the second motor 402 is fixedly connected inside the drive base 401. The second motor 402 is poweredly connected to the clamping table 403. The clamping module 404 is provided on the clamping table 403. The inner ring of the wheel hub bearing can be clamped and fixed by the clamping module 404. Then, when the second motor 402 drives the clamping table 403 to rotate, the inner ring of the wheel hub bearing can be rotated. When the lifting mechanism 200 drives the riveting mechanism 300 to descend to achieve feeding, the rotation of the inner ring of the wheel hub bearing and the riveting head can realize the processing of the spline. The specific method here is the prior art, so it will not be described in detail here.

[0027] Specifically, in this embodiment, the clamping module 404 includes a second lead screw 4041, a third lead screw 4042, a gripper 4043, a worm gear 4044, a worm wheel 4045, and a transmission gear 4046. That is, the fixture table 403 is provided with a sliding groove, on which two sets of clamping tables are slidably connected. Each set of clamping tables is fixedly connected to a set of grippers 4043. One set of clamping tables is threadedly connected to the second lead screw 4041, and the other set is threadedly connected to the third lead screw 4042. The second lead screw 4041 and the third lead screw 4042 are fixedly connected via a connecting shaft 4047. Furthermore, an input shaft 4048 is fixedly connected to the end of either the second lead screw 4041 or the third lead screw 4042. A worm wheel 4045 is fixedly connected to the input shaft 4048. A worm gear 4044 is rotatably connected to the fixture table 403. The worm gear 4044 and... The worm gear 4045 is engaged with the worm 4044, and the transmission gear 4046 is fixedly connected to the worm. The aforementioned lifting motion platform 201 is fixedly connected to the drive rack 500. The drive rack 500 cooperates with the transmission gear. That is, when the lifting motion platform 201 descends, the drive rack 500 can descend synchronously. The descending drive rack 500 can drive the transmission gear 4046 to rotate. Then, the rotation of the worm 4044 drives the worm gear 4045. Finally, the power is input to the second lead screw 4041 and the third lead screw 4042. In this way, the two sets of clamping platforms can drive the jaws 4043 to move closer to each other, thereby clamping and fixing the inner ring of the wheel hub bearing on the clamping platform 403. Furthermore, by utilizing the self-locking effect of the worm 4044 and the worm gear 4045, the clamping force will not loosen due to shaking after the two sets of jaws 4043 clamp the inner ring of the wheel hub bearing.

[0028] Furthermore, such as Figure 3As shown, when the lifting mechanism 200 drives the riveting mechanism 300 to continue to descend, the drive rack 500 can disengage from the transmission gear 4046 to avoid interference when the fixture table 403 rotates. Furthermore, the clamping surface of the gripper 4043 matches the outer contour of the inner ring of the wheel hub bearing, so that the contact surface between the gripper 4043 and the inner ring of the wheel hub bearing is larger, ensuring stable clamping.

[0029] Furthermore, multiple sets of positioning pins 600 are fixedly connected to the fixture table 403. The positioning pins 600 pass through the holes in the wheel hub flange 700. That is, the inner ring of the wheel hub bearing is generally provided with a wheel hub flange 700, and the wheel hub flange 700 has holes. By having the positioning pins 600 pass through some holes, the inner ring of the wheel hub bearing can be positioned, thereby ensuring that the gripper 4043 can accurately clamp the inner ring of the wheel hub bearing. When the fixture table 403 rotates, the positioning pins 600 can also prevent the gripper 4043 from having insufficient clamping force, which would cause the inner ring of the wheel hub bearing to rotate and slip.

[0030] In summary, when machining the spline on the end face of the inner ring of the wheel hub bearing, the inner ring of the wheel hub bearing can be placed on the fixture table 403 and positioned by the positioning pin 600. Then, the lifting mechanism 200 works, causing the lifting motion table 201 to drive the riveting mechanism 300 to descend. At this time, the descending drive rack 500 drives the transmission gear 4046 to rotate, causing the second lead screw 4041 and the third lead screw 4042 to rotate. In this way, the two sets of clamping tables can drive the two sets of jaws 4043 to move closer to each other, thereby clamping and fixing the inner ring of the wheel hub bearing.

[0031] Then the lifting mechanism 200 continues to drive the riveting mechanism 300 to descend. At the same time, the second motor 402 drives the fixture table 403 and the inner ring of the wheel hub bearing on it to rotate. The spline can be processed on the end face of the inner ring of the wheel hub bearing through the riveting mechanism 300.

[0032] After processing is completed, the second motor 402 drives the fixture table 403 to return to its original position. This causes the lifting mechanism 200 to work, which causes the lifting motion table 201 to drive the riveting mechanism 300 to rise. Through the drive rack 500, the transmission gear 4046 is driven to rotate. At this time, the second lead screw 4041 and the third lead screw 4042 both rotate. The two sets of clamping tables drive the jaws 4043 to move away from each other, thereby loosening the inner ring of the wheel hub bearing.

[0033] With the above structure, the power of the lifting mechanism 200 combined with the mechanical structure can be fully utilized to provide the required power for the clamping module 404, which greatly reduces the overall drive source of the device, reduces the failure rate, and makes the device more durable.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spin riveting device for hub bearing end face spline machining, comprising a device frame (100) and a lifting mechanism (200), a spin riveting mechanism (300), a rotary clamp mechanism (400) arranged on the device frame (100), characterized in that: The lifting mechanism (200) comprises a lifting motion table (201) capable of lifting motion, and the lifting motion table (201) is fixedly connected with the spin riveting mechanism (300); The bottom of the spin riveting mechanism (300) is provided with the rotary clamp mechanism (400), and the rotary clamp mechanism (400) comprises a driving base (401), a second motor (402), a clamp table (403) and a clamping module (404). The clamp table (403) is rotatably connected to the driving base (401), and the second motor (402) is fixedly connected in the driving base (401). The second motor (402) is power-connected with the clamp table (403), and the clamping module (404) is arranged on the clamp table (403). The clamping module (404) comprises a second lead screw (4041), a third lead screw (4042), a clamping jaw (4043), a worm (4044), a worm wheel (4045) and a transmission gear (4046). Two groups of clamping tables are slidably connected to the clamp table (403), and each group of the clamping tables is fixedly connected with a group of the clamping jaws (4043). The second lead screw (4041) is threadedly connected to one group of the clamping tables, and the third lead screw (4042) is threadedly connected to the other group of the clamping tables. The second lead screw (4041) and the third lead screw (4042) are fixedly connected through a connecting shaft (4047). The end of the second lead screw (4041) or the third lead screw (4042) is fixedly connected with an input shaft (4048), and the input shaft (4048) is fixedly connected with the worm wheel (4045). The worm (4044) is rotatably connected to the clamp table (403), and the worm (4044) is meshingly connected with the worm wheel (4045). The transmission gear (4046) is fixedly connected to the worm (4044). The lifting motion table (201) is fixedly connected with a driving rack (500), and the driving rack (500) cooperates with the transmission gear (4046).

2. A spin riveting device for hub bearing end face splining according to claim 1, characterized in that: The lifting mechanism (200) comprises a sliding column (202), a first lead screw (203) and a first motor (204). The device rack (100) is fixedly connected with the sliding column (202), and the sliding column (202) is slidably connected with the lifting motion table (201). The lifting motion table (201) is threadedly connected with the first lead screw (203), and the device rack (100) is fixedly connected with the first motor (204). The first motor (204) is power-connected with the first lead screw (203).

3. A spin riveting device for hub bearing end face splining according to claim 1, characterized in that: The clamp table (403) is provided with a sliding groove, and the clamping table is slidably connected to the sliding groove.

4. A spin riveting device for hub bearing end face splining according to claim 1, characterized in that: The clamp table (403) is fixedly connected with a plurality of positioning columns (600), and the positioning columns (600) pass through holes in the hub flange (700).

5. A spin riveting device for hub bearing end face splining according to claim 1, characterized in that: The clamping surface of the clamping jaw (4043) cooperates with the outer contour of the inner ring of the hub bearing.

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