Hub bearing machining tool

Abstract

The utility model provides a hub bearing machining tool, and belongs to the technical field of machine tool equipment. The problem that the overall precision of a hub bearing cannot be improved through an existing machining machine tool is solved. The hub bearing machining machine tool comprises a machine tool base, a clamp base is arranged on the table top of the machine tool base, a clamping jaw assembly used for making contact with the outer surface of a hub bearing so as to fix the hub bearing is arranged on the clamp base, and a driving mechanism used for driving an inner ring of the hub bearing to rotate is arranged on the machine tool base. The driving mechanism can move up and down to be close to or away from the clamp base, and a tool mechanism capable of moving axially and transversely is further arranged on the machine tool base. The utility model has the advantage of high integral processing precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment and relates to a wheel hub bearing processing machine tool. Background Art

[0002] Wheel hub bearings are components used in automobile axles to bear weight and provide precise guidance for the rotation of the wheel hub. They bear both axial and radial loads and are an important component of automobile load-bearing and rotation. Wheel hub bearing units are developed on the basis of standard angular contact ball bearings and tapered roller bearings. They integrate two sets of bearings into one unit and have the advantages of good assembly performance, no need for clearance adjustment, light weight, compact structure, large load capacity, grease can be pre-loaded for sealed bearings, no need for external wheel hub seals, and no need for maintenance. They have been widely used in cars and are also gradually expanding their application in trucks.

[0003] The bearing outer ring and the bearing inner ring of the existing wheel hub bearing are processed separately by machine tools, and then the bearing outer ring, the bearing inner ring and the ball are assembled into a whole. The main disadvantages of the existing machine tools for processing wheel hub bearings are: the machine tools can only process the bearing outer ring and the bearing inner ring separately, and the processed bearing outer ring and bearing inner ring meet their respective processing accuracy requirements. However, after the two are assembled, the ball will jump in the raceway, making the wheel hub bearing have poor accuracy during use, and it is impossible to perform overall processing on the assembled wheel hub bearing to improve the processing accuracy of the wheel hub bearing. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a wheel hub bearing processing machine tool with high processing accuracy.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wheel hub bearing processing machine tool comprises a machine tool base, characterized in that a fixture seat is arranged on the table top of the machine tool base, characterized in that a claw assembly for contacting the outer surface of the wheel hub bearing to fix the wheel hub bearing is arranged on the fixture seat, and a driving mechanism for driving the inner ring of the wheel hub bearing to rotate is arranged on the machine tool base, and the driving mechanism can move up and down to approach or move away from the fixture seat, and a tool mechanism capable of axial and lateral movement is also arranged on the machine tool base.

[0007] In the above-mentioned wheel hub bearing processing machine tool, the fixture seat includes a connecting part and a mounting part arranged on the connecting part, the bottom end of the connecting part is fixedly connected to the table top of the machine tool base, a processing chamber is formed between the connecting part and the mounting part, the side of the connecting part is provided with a processing groove in the processing chamber for the tool in the tool mechanism to penetrate, the mounting part is provided with a mounting hole connected to the interior of the processing chamber, and the jaw assembly is arranged on the mounting part.

[0008] In the above-mentioned wheel hub bearing processing machine tool, the jaw assembly includes a plurality of fixed jaws, which are evenly distributed on the mounting portion circumferentially with the central axis of the mounting hole as the center, and the plurality of fixed jaws can be synchronously moved close to the central axis of the mounting hole or away from the central axis of the mounting hole.

[0009] In the above-mentioned wheel hub bearing processing machine tool, the driving mechanism includes a driving seat that can move up and down and a driving motor connected to the driving seat, and a driving member is arranged on the output end of the driving motor, and the driving member is arranged toward the fixture seat.

[0010] In the above-mentioned wheel hub bearing processing machine tool, the driving member is provided with a connecting section, one end of the connecting section is provided with a radially protruding limiting portion, and the other end of the connecting section is provided with an adjusting member capable of adjusting the length of the connecting section.

[0011] In the above-mentioned wheel hub bearing processing machine tool, the tool mechanism includes a lateral moving component and an axial moving component. The lateral moving component is connected to the working part of the axial moving component and the two are arranged perpendicular to each other. The lateral moving component is provided with a processing cutter disc.

[0012] In the above-mentioned wheel hub bearing processing machine tool, the adjusting member is a nut, and the connecting section has a thread matched with the nut.

[0013] In the above-mentioned wheel hub bearing processing machine tool, the number of the processing grooves can be two, and the two processing grooves are symmetrically distributed on both sides of the connecting part.

[0014] In the above-mentioned wheel hub bearing processing machine tool, the axial movement component includes an axial shifting support plate and an axial shifting slide arranged on the axial shifting support plate, and the machine tool base is provided with an axial shifting drive for driving the axial shifting slide to move along the length direction of the axial shifting support plate, and the lateral movement component is connected to the axial shifting slide.

[0015] In the above-mentioned wheel hub bearing processing machine tool, the lateral movement assembly includes a lateral movement pallet and a lateral movement slide arranged on the lateral movement pallet, and the machine tool base is provided with a lateral movement drive for driving the lateral movement slide to move along the length direction of the lateral movement pallet, and the processing cutter disc is connected to the lateral movement assembly.

[0016] Compared with the existing technology, the advantages of the utility model are: the outer ring of the bearing and the inner ring of the bearing are assembled first, and during machining, the outer ring of the wheel hub bearing is fixed and used as a machining reference, and then the runout clearance of the ball raceway is calculated within the machining error, and then the lower surface of the inner ring of the bearing is machined, thereby improving the overall accuracy of the bearing.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 The utility model is a schematic diagram of the installation structure of the wheel hub bearing on the fixture seat.

[0020] Figure 3 It is a structural schematic diagram of the tool mechanism in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the clamp seat in the utility model.

[0022] In the figure, 1, machine tool base; 2, fixture seat; 3, claw assembly; 4, driving mechanism; 5, tool mechanism; 6, connecting part; 7, mounting part; 8, processing chamber; 9, processing groove; 10, mounting hole; 11, fixed claw; 12, driving motor; 13, driving member; 14, connecting section; 15, limiting part; 16, adjusting member; 17, lateral moving assembly; 18, axial moving assembly; 19, processing cutter disc; 20, axial shifting support plate; 21, axial shifting slide; 22, axial shifting driver; 23, lateral shifting support plate; 24, lateral shifting slide; 25, lateral shifting driver. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 4 As shown, a wheel hub bearing processing machine tool includes a machine tool base 1, a fixture seat 2 is arranged on the table top of the machine tool base 1, a claw assembly 3 for contacting the outer surface of the wheel hub bearing to fix the wheel hub bearing is arranged on the fixture seat 2, a driving mechanism 4 for driving the inner ring of the wheel hub bearing to rotate is arranged on the machine tool base 1, the driving mechanism 4 can move up and down to approach or move away from the fixture seat 2, and a tool mechanism 5 that can move axially and laterally is also arranged on the machine tool base 1.

[0025] In this embodiment, the fixture seat 2 on the machine tool base 1 is used to place the hub bearing. After the hub bearing is placed on the fixture seat 2, the hub bearing is positioned and fixed by the claw assembly 3. The claw assembly 3 contacts the outer surface of the outer ring of the hub bearing. When the hub bearing is fixed, the inner ring of the hub bearing can rotate relatively. Then, the driving mechanism 4 is used to apply power to the inner ring of the bearing to make it rotate. Finally, the tool mechanism 5 is used to cut the bottom outer surface of the hub bearing. During the turning process, the inner ring of the hub bearing is positioned by the outer ring of the bearing, and the rolling clearance of the rollers in the bearing is used as the cutting error of the bottom outer surface of the inner ring of the hub bearing, thereby improving the processing accuracy of the hub bearing.

[0026] Specifically, the fixture seat 2 includes a connecting portion 6 and a mounting portion 7 disposed on the connecting portion 6. The bottom end of the connecting portion 6 is fixedly connected to the table of the machine tool base 1. A processing chamber 8 is formed between the connecting portion 6 and the mounting portion 7. The processing chamber 8 is used for processing the outer surface of the lower part of the inner ring of the wheel hub bearing. A processing groove 9 is provided on the side of the connecting portion 6 for the tool in the tool mechanism 5 to penetrate into the processing chamber 8. The mounting portion 7 is provided with a mounting hole 10 connected to the inside of the processing chamber 8. The claw assembly 3 is disposed on the mounting portion 7. The mounting hole 10 is used for the roller bearing to pass through. When the upper part of the wheel hub bearing passes through the upper part of the mounting hole 10, it is clamped by the claw assembly 3. At this time, the lower half of the inner ring of the wheel hub bearing is located in the processing chamber 8.

[0027] In this embodiment, the claw assembly 3 includes a plurality of fixed claws 11, and the plurality of fixed claws 11 are evenly distributed on the mounting portion 7 in a circumferential direction with the central axis of the mounting hole 10 as the center, and the plurality of fixed claws 11 can be synchronously moved close to the central axis of the mounting hole 10 or away from the central axis of the mounting hole 10. Preferably, the number of claws is 3, and 3 claws can achieve stable fixation of the workpiece.

[0028] Those skilled in the art should know that the clamping claws used to hold the workpiece are conventional technical means in the field of machine tools, and the improvement point of the technical solution of the present application is not the clamping claws, so the structure of the clamping claws will not be elaborated in detail.

[0029] In this embodiment, the driving mechanism 4 includes a driving seat that can move up and down and a driving motor 12 connected to the driving seat. A driving member 13 is provided on the output end of the driving motor 12, and the driving member 13 is arranged toward the clamp seat 2. The up and down movement of the driving seat can be achieved by a cylinder, an oil cylinder, or a combination of a motor and a screw rod, which belongs to the prior art. The driving motor 12 is used to provide power for the driving member 13. When the driving motor 12 is working, it can drive the driving member 13 to rotate. When the driving member 13 is connected to the inner ring of the bearing, the inner ring of the bearing rotates with it.

[0030] Specifically, the driving member 13 has a connecting section 14, one end of which has a radially protruding limiting portion 15, and the other end of which is provided with an adjusting member 16 capable of adjusting the length of the connecting section 14. The driving member 13 passes through the wheel hub bearing from top to bottom, and then the limiting portion 15 on the connecting section 14 abuts against the upper surface of the inner ring of the wheel hub bearing. At this time, the adjusting member 16 is adjusted so that the adjusting member abuts against the wheel hub bearing from the lower end of the wheel hub bearing. At this time, the wheel hub bearing cannot move up and down. The inner surface of the inner ring of the wheel hub bearing has a keyway, and the outer surface of the connecting section 14 has a key block matched with the keyway. When the driving member 13 rotates, the inner ring of the bearing will start to rotate together.

[0031] For the convenience of adjustment, the adjusting member 16 is a nut, and a thread matching the nut is provided on the connecting section 14. The inner ring of the bearing can be fixed quickly by rotating the adjusting member 16.

[0032] In this embodiment, the number of the processing grooves 9 can be two, and the two processing grooves 9 are symmetrically distributed on both sides of the connecting portion 6. Multiple tools can be used to achieve rapid processing of the bearing. When a single tool is used for processing, the processing groove 9 on the other side can be used for heat dissipation.

[0033] The tool mechanism 5 includes a transverse moving component 17 and an axial moving component 18. The transverse moving component 17 is connected to the working part of the axial moving component 18 and the two are arranged perpendicular to each other. A processing cutter disc 19 is arranged on the transverse moving component 17. Specifically, the axial moving component 18 includes an axial shifting pallet 20 and an axial shifting slide 21 arranged on the axial shifting pallet 20. An axial shifting driver 22 for driving the axial shifting slide 21 to move along the length direction of the axial shifting pallet 20 is arranged on the machine tool base 1. The transverse moving component 17 is connected to the axial shifting slide 21. The transverse moving component 17 includes a transverse shifting pallet 23 and a transverse shifting slide 24 arranged on the transverse shifting pallet 23. A transverse shifting driver 25 for driving the transverse shifting slide 24 to move along the length direction of the transverse shifting pallet 23 is arranged on the machine tool base 1. The processing cutter disc 19 is connected to the transverse moving component 17.

[0034] The axial drive 22 and the transverse drive 25 can both be oil cylinders, air cylinders, or motors. When they are motors, they need to cooperate with screw rods and screw nuts to drive the movement of the slide. Those skilled in the art should understand that no matter which of the above-mentioned power sources is used, the structure is the prior art.

[0035] The axial shift driver 22 drives the axial shift slide 21 to move downward or upward. Since the lateral moving component 17 is connected to the axial shift slide 21, it will work together with the axial shift slide 21. When reaching the specified height, the axial shift slide 21 stops moving, and the lateral moving driver 25 drives the lateral moving slide 24 to move toward the side of the fixture seat 2, so that the processing cutter disc 19 can act on the outer surface of the lower end of the inner ring of the bearing to achieve cutting.

[0036] The working principle of the utility model is as follows: the fixture seat 2 on the machine tool base 1 is used to place the hub bearing. After the hub bearing is placed on the fixture seat 2, the hub bearing is positioned and fixed by the claw assembly 3. The claw assembly 3 contacts the outer surface of the outer ring of the hub bearing. When the hub bearing is fixed, the inner ring of the hub bearing can rotate relatively.

[0037] Then the driving member 13 passes through the wheel hub bearing from top to bottom, and the limiting part 15 on the connecting section 14 will abut against the upper surface of the inner ring of the wheel hub bearing. At this time, adjust the adjusting member 16 so that the adjusting member abuts against the wheel hub bearing from the lower end of the wheel hub bearing. At this time, the wheel hub bearing cannot move up and down. The inner surface of the inner ring of the wheel hub bearing has a keyway, and the outer surface of the connecting section 14 has a key block that matches the keyway. When the driving member 13 rotates, the inner ring of the bearing will start to rotate together. Finally, the axial moving component 18 and the lateral moving component 17 in the tool mechanism 5 are used to process the position of the cutter disc 19 to realize the cutting process of the bottom outer surface of the wheel hub bearing by the processing cutter disc 19.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although more terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A wheel hub bearing processing machine tool, comprising a machine tool base (1), characterized in that: A fixture seat (2) is arranged on the table top of the machine tool base (1); a claw assembly (3) is arranged on the fixture seat (2) for contacting the outer surface of the wheel hub bearing so as to fix the wheel hub bearing; a driving mechanism (4) is arranged on the machine tool base (1) for driving the inner ring of the wheel hub bearing to rotate; the driving mechanism (4) can move up and down to approach or move away from the fixture seat (2); and a tool mechanism (5) capable of axial and lateral movement is also arranged on the machine tool base (1).

2. A wheel hub bearing processing machine tool according to claim 1, characterized in that: The fixture seat (2) comprises a connecting portion (6) and a mounting portion (7) arranged on the connecting portion (6); the bottom end of the connecting portion (6) is fixedly connected to the table top of the machine tool base (1); a processing chamber (8) is formed between the connecting portion (6) and the mounting portion (7); a processing groove (9) in the processing chamber (8) for a tool in the tool mechanism (5) to penetrate is provided on the side of the connecting portion (6); a mounting hole (10) connected to the inside of the processing chamber (8) is provided on the mounting portion (7); and the clamping claw assembly (3) is arranged on the mounting portion (7).

3. A wheel hub bearing processing machine tool according to claim 2, characterized in that: The clamping claw assembly (3) comprises a plurality of fixed clamping claws (11), the plurality of fixed clamping claws (11) being evenly distributed on the mounting portion (7) in a circumferential direction with the central axis of the mounting hole (10) as the center, and the plurality of fixed clamping claws (11) can be synchronously moved closer to the central axis of the mounting hole (10) or away from the central axis of the mounting hole (10).

4. The wheel hub bearing processing machine tool according to claim 1, characterized in that: The driving mechanism (4) comprises a driving seat that can move up and down and a driving motor (12) connected to the driving seat, and a driving member (13) is arranged on the output end of the driving motor (12), and the driving member (13) is arranged toward the clamp seat (2).

5. The wheel hub bearing processing machine tool according to claim 4, characterized in that: The driving member (13) is provided with a connecting section (14), one end of the connecting section (14) is provided with a radially protruding limiting portion (15), and the other end of the connecting section (14) is provided with an adjusting member (16) capable of adjusting the length of the connecting section (14).

6. The wheel hub bearing processing machine tool according to claim 1, characterized in that: The tool mechanism (5) comprises a transverse moving component (17) and an axial moving component (18); the transverse moving component (17) is connected to a working portion of the axial moving component (18) and the two are arranged perpendicular to each other; and a processing cutter disc (19) is arranged on the transverse moving component (17).

7. The wheel hub bearing processing machine tool according to claim 5, characterized in that: The adjusting member (16) is a nut, and the connecting section (14) has a thread matching the nut.

8. The wheel hub bearing processing machine tool according to claim 2, characterized in that: The number of the processing grooves (9) may be two, and the two processing grooves (9) are symmetrically distributed on both sides of the connecting portion (6).

9. The wheel hub bearing processing machine tool according to claim 6, characterized in that: The axial movement assembly (18) comprises an axial movement support plate (20) and an axial movement slide (21) arranged on the axial movement support plate (20); an axial movement driver (22) for driving the axial movement slide (21) to move along the length direction of the axial movement support plate (20) is arranged on the machine tool base (1); and the lateral movement assembly (17) is connected to the axial movement slide (21).

10. The wheel hub bearing processing machine tool according to claim 6, characterized in that: The transverse moving assembly (17) comprises a transverse moving pallet (23) and a transverse moving slide (24) arranged on the transverse moving pallet (23); a transverse moving driver (25) for driving the transverse moving slide (24) to move along the length direction of the transverse moving pallet (23) is arranged on the machine tool base (1); and the processing tool disc (19) is connected to the transverse moving assembly (17).

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