Hub bearing outer ring dismounting tool

Abstract

The utility model relates to a hub bearing outer ring dismounting tool. Belongs to the technical field of hub unit products. The device mainly solves the problem that the outer ring of the bearing is inconvenient to disassemble when the torque of the hub bearing is detected at present. The device is mainly characterized by comprising an end cover, a support rod and a base, wherein the base is a cylinder internally provided with a circular groove, and radial supporting rod through holes are uniformly distributed along the circumference of the groove wall of the base; the supporting rod is in clearance fit with the supporting rod through hole; and the end cover is a disc body with a circular boss matched with the circular groove. The hub bearing outer ring dismounting tool has the advantages of being simple in structure, low in manufacturing cost, small in tool size, convenient to use, free of damage to a hub seat, capable of reducing labor intensity and improving detection efficiency, and is mainly used for dismounting the hub bearing outer ring in hub unit torque detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub unit products, and in particular relates to a tool for disassembling a wheel hub bearing outer ring, which is convenient for replacing the wheel hub bearing outer ring for use. Background Art

[0002] Hub unit products are the company's key development targets, and strict requirements are placed on product precision and quality. Product torque inspection has always been a top priority. Product torque is also a key factor that directly affects product performance. Excessive torque will affect product performance, reduce product life, and affect customer experience.

[0003] In production, the torque test requires the bearing unit to be installed into the wheel hub seat, simulating the loading state to test whether the torque is appropriate. In the process of installing the bearing unit into the wheel hub seat, since the outer ring of the bearing and the inner hole of the wheel hub seat are interference fit, it is necessary to apply a pressure of about 8T through the press to completely press the outer ring of the bearing into the inner hole of the wheel hub seat before the torque of the whole set of products can be tested. Since the wheel hub seat is a casting, it is large in size, heavy in weight, and high in cost. In the process of testing the torque, it is often necessary to remove the outer ring of the bearing from the inner hole of the wheel hub seat after verification, and then install another set of bearing units for torque verification. In the process of removing the outer ring of the bearing, since the two outer rings of a set of bearing units are the same size, the pressure head of the press cannot press the outer ring of the bearing out without a force point. It is necessary to manually knock the outer ring of the bearing out of the inner hole of the wheel hub seat with a hammer. The whole disassembly process is not convenient to operate, requires a lot of knocking force, has high labor intensity, and is easy to damage the wheel hub seat. There are safety hazards, and it may hit your hands, which has certain safety risks. Summary of the invention

[0004] The purpose of the utility model is to provide a wheel hub bearing outer ring disassembly tool with simple structure, convenient operation and safe use in view of the above-mentioned shortcomings.

[0005] The technical solution of the utility model is: a wheel hub bearing outer ring disassembly tool, which is characterized by: consisting of an end cover, a support rod and a base; wherein the base is a cylinder with a circular groove arranged therein, and radial support rod through holes are evenly distributed along the circumference of the base groove wall; the support rod and the support rod through hole are clearance-matched; the end cover is a disc body with a circular boss that matches the circular groove.

[0006] The support rod through hole described in the technical solution of the utility model is a circular through hole, and the axial direction of the support rod through hole is parallel to the upper and lower surfaces of the base; the support rod is a cylinder.

[0007] One end of the support rod described in the technical solution of the utility model is provided with a small boss.

[0008] The small boss described in the technical solution of the utility model is a small circular boss, and the diameter of the small circular boss is smaller than the diameter of the support rod.

[0009] On the circumferential wall of the base groove in the technical solution of the present utility model, six support rod through-holes are evenly distributed.

[0010] In the technical solution of the present utility model, the axial direction of the support rod through-hole is parallel to the upper and lower surfaces of the base.

[0011] On one end of the end cover opposite to the circular boss in the technical solution of the present utility model, a small stop is provided.

[0012] In the technical solution of the present utility model, the depth of the circular groove of the base is greater than the height of the support rod or the sum of the diameter and the height of the circular boss of the end cover, and the diameter is smaller than the outer raceway diameter of the bearing outer ring to be disassembled.

[0013] In the technical solution of the present utility model, the number of support rods is three.

[0014] In the technical solution of the present utility model, the materials of the end cover, the support rod and the base are GCr15, and need to be quenched, and the quenching hardness is HRC55 - 60.

[0015] The present utility model adopts a hub bearing outer ring disassembly tooling composed of an end cover, a support rod and a base. Among them, the circular boss of the end cover is matched with the circular groove of the base. There are six evenly distributed support rod through-holes around the circular groove of the base. The axial direction of the support rod through-hole is parallel to its upper and lower surfaces and is matched with the support rod. The diameter of the support rod is slightly smaller than the diameter of the support rod through-hole around the circular groove of the base. The support rod can axially move in the hole. There is a small boss on one side of the support rod. The direction of the small boss is outward and is matched with the large end face of the bearing outer ring. The diameter of the base is smaller than the outer raceway diameter of the bearing outer ring and can pass through the bearing outer ring during use. When disassembling the hub bearing outer ring, first place the hub to be disassembled on the working surface of the press, then take three support rods with the small bosses facing outward and insert them into the through-holes of the circular groove of the base (the number of through-holes is six, and three are selected for use during use to maintain stability), then place the base from the upper end of the inner hole of the hub seat until it reaches the middle position of the hub seat, and then push the support rod out of the hole so that the small boss of the support rod falls on the cross-section of the bearing outer ring. At this time, the three small bosses of the support rod act as fulcrums on the large end face of the bearing outer ring. Then cover the end cover on the base from above, and finally align the press head with the end cover and apply pressure downward to press the bearing outer ring out of the hub seat. Use the same operation to press out the bearing outer ring at the other end.

[0016] The present utility model solves the problem of inconvenient disassembly of the hub bearing outer ring, reduces the labor intensity, reduces the safety risk during disassembly, improves the work efficiency, and will not damage the hub seat.

[0017] The present utility model has the characteristics of simple structure, low manufacturing cost, small volume of the tooling, convenient use without damaging the hub seat, reducing the labor intensity and improving the detection efficiency, and is mainly used for the disassembly of the hub bearing outer ring in the torque detection of the hub unit. Brief Description of the Drawings

[0018] Figure 1 This is a schematic structural diagram of the present utility model.

[0019] Figure 2 This is a schematic diagram of the usage mode of the present utility model.

[0020] In the figure: 1 - end cover; 2 - support rod; 3 - base; 4 - outer ring of bearing; 5 - hub seat. Detailed Description of the Preferred Embodiment

[0021] The present utility model will be further described below in conjunction with the accompanying drawings.

[0022] As Figure 1 , Figure 2 shown, an embodiment of a dismounting tool for the outer ring of a hub bearing of the present utility model is composed of a base 3, a support rod 2 and a cover plate 1.

[0023] The main body of the base 3 is a cylinder, with a circular groove inside. The groove is used to cooperate with the cover plate 1. There are 6 uniformly distributed support rod through - holes in the circumferential direction of the groove. The axes of the support rod through - holes are parallel to the upper and lower surfaces of the base 3 and are used to insert the support rod 2. The support rod through - holes are located in the middle of the circular groove wall. The depth of the groove is greater than the sum of the height of the circular boss of the cover plate 1 and the diameter of the support rod 2. The support rod 2 can be telescoped in the through - hole. The material of the base 3 is GCr15 and needs to be quenched. The quenching hardness is HRC55 - 60.

[0024] The shape of the support rod 2 is cylindrical, with a small boss at one end. When in use, 3 support rods are required. The end of the support rod with the small boss is inserted outward into the through - hole of the base 3. Adjust the telescopic amount, extend the support rod 2 outward so that the small boss contacts the large end face of the outer ring of the bearing 4 to form a stable fulcrum. The material of the support rod 2 is GCr15 and needs to be quenched. The quenching hardness is HRC55 - 60.

[0025] The shape of the cover plate 1 is a circular - cover - type step - like shape, with a small flange on one side and a circular boss on the other side. When in use, the cover plate 1 is covered on the base 3, and the circular boss extends into the circular groove of the base 3 to cooperate with it. The small flange on the other side is convenient for taking. The material of the cover plate 1 is GCr15 and needs to be quenched. The quenching hardness is HRC55 - 60.

[0026] A press (not shown in the figure) is mainly used for pressing out the outer ring of the bearing 4. The hub bearing to be disassembled is horizontally placed on the working table of the press. The press head is vertically matched with the cover plate 1, and pressure is applied downward.

[0027] Usage method:

[0028] Take 3 support rods 2, and insert the small bosses of the support rods 2 into the support rod through holes of the base 3 at intervals with the small bosses facing outwards. The number of support rod through holes is 6, and 3 of them are used while the other 3 are for backup. Then, place the bearing housing 5 horizontally on the workbench of the press. Next, insert the base 3 into the inner hole at the upper end of the bearing housing 5 until it reaches the middle position of the bearing housing 5. Stretch the support rods 2 outwards so that the small bosses contact the large end face of the bearing outer ring 4. The small bosses serve as support points and support on the bearing outer ring 4. Finally, cover the end cap 1 on the base 3, start the press, and the press head applies a downward pressure on the end cap 1. The pressure acts on the bearing outer ring 4 through the support rods 2, and presses the bearing outer ring 4 out of the hub seat 5. Repeat the same operation to press out the other bearing outer ring 4.

[0029] With this tooling, the labor intensity is reduced, the safety risk is lowered, and this tooling has a simple structure, low manufacturing cost, is convenient to use and will not damage the hub seat, thus improving the detection efficiency.

Claims

1. A wheel hub bearing outer ring disassembly tool, characterized by: The invention is composed of an end cover (1), a support rod (2) and a base (3); wherein the base (3) is a cylinder with a circular groove therein, and radial support rod through holes are evenly distributed along the circumference of the groove wall of the base (3); the support rod (2) is clearance-matched with the support rod through holes; and the end cover (1) is a disc body with a circular boss that matches the circular groove.

2. The wheel hub bearing outer ring disassembly tool according to claim 1, characterized in that: The support rod through hole is a circular through hole, and the axial direction of the support rod through hole is parallel to the upper and lower surfaces of the base (3); the support rod (2) is a cylinder.

3. The wheel hub bearing outer ring disassembly tool according to claim 2 is characterized by: One end of the support rod (2) is provided with a small boss.

4. The wheel hub bearing outer ring disassembly tool according to claim 3 is characterized by: The small boss is a small circular boss, and the diameter of the small circular boss is smaller than the diameter of the support rod (2).

5. A wheel hub bearing outer ring disassembly tool according to any one of claims 1 to 4, characterized in that: Six support rod through holes are evenly distributed on the circumference of the groove wall of the base (3).

6. The wheel hub bearing outer ring disassembly tool according to claim 5, characterized in that: The support rod through hole is axially parallel to the upper and lower surfaces of the base.

7. A wheel hub bearing outer ring disassembly tool according to any one of claims 1-4 and 6, characterized in that: The end cover (1) is provided with a small rib at the end opposite to the circular boss.

8. A wheel hub bearing outer ring disassembly tool according to any one of claims 1-4 and 6, characterized in that: The depth of the circular groove of the base (3) is greater than the sum of the height or diameter of the support rod (2) and the height of the circular boss of the end cover (1), and the diameter is smaller than the outer raceway diameter of the outer ring (4) of the bearing to be removed.

9. A wheel hub bearing outer ring disassembly tool according to any one of claims 1-4 and 6, characterized in that: The number of the support rods (2) is 3.

10. A wheel hub bearing outer ring disassembly tool according to any one of claims 1-4 and 6, characterized in that: The material of the end cover (1), the support rod (2) and the base (3) is GCr15, which needs to be quenched, and the quenching hardness is HRC55-60.

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