Thrust bearing grinding tool

Abstract

The utility model relates to a thrust bearing grinding tool which comprises a fixing device and a spline sleeve, the fixing device is connected with the lower portion of a spline eccentric shaft, the spline sleeve is sleeved on the upper portion of the spline eccentric shaft, and the fixing device is fixedly installed on a thrust bearing three-piece set. According to the thrust bearing grinding tool, the thrust bearing three-piece contact face can be evenly pressed, and good conditions are created for liquid lubrication so that abrasion can be reduced, the surface roughness can be improved, the equipment running-in time can be shortened, and the service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of grinding tools, in particular to a thrust bearing grinding tool. Background Art

[0002] The existing thrust bearing three-piece matching surface is a spherical surface. The contact surface after turning the spherical surface cannot meet the requirement of more than 95% of the contact surface to a large extent. It needs to be corrected by grinding to make the contact surface pressure uniform. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the utility model provides a thrust bearing grinding tool.

[0004] In order to achieve the above object, the technical solution of the utility model is as follows:

[0005] A thrust bearing grinding tool comprises a fixing device and a spline sleeve. The fixing device is connected to the lower part of a spline eccentric shaft, the spline sleeve is sleeved on the upper part of the spline eccentric shaft, and the fixing device is fixedly installed on the thrust bearing three-piece sleeve.

[0006] As an optimal technical solution, the upper part of the splined eccentric shaft is cylindrical with a spline groove, and the lower part is a sphere. One side of the cylindrical upper part is connected to the sphere below through a connecting rod. The cylindrical upper part is not concentric with the connecting rod and has a certain eccentricity. The whole is an integrated molded structure.

[0007] As a preferred technical solution, the fixing device includes a connecting component, a fixing plate and multiple fixing units. The sphere is in contact with the connecting component, the connecting component is fixedly connected to the center of the fixing plate, the number of fixing units is equal to the number of ends of the fixing plate, and the fixing units are respectively installed at each end of the fixing plate.

[0008] As a preferred technical solution, the connecting assembly includes a sleeve, a spherical support, a spring and a cover plate. A connecting hole is opened on the top of the sleeve, and the connecting rod passes through the connecting hole. The sphere and the spherical support are located in the sleeve. The diameter of the connecting hole is smaller than the diameter of the sphere. The upper surface of the spherical support is provided with an arc-shaped recessed hole matching the lower surface of the sphere. The sphere contacts the inner wall of the arc-shaped recessed hole. The spherical support is slidably connected to the sleeve. The cover plate is fixed to the bottom end of the sleeve. The spring is vertically arranged and its two ends are respectively fixed to the lower surface of the spherical support and the upper surface of the cover plate.

[0009] As a preferred technical solution, the fixing plate is a cross plate.

[0010] As an optimal technical solution, the fixing unit includes a nut, a fixing bolt and a rubber washer. The nut is fixed to the lower surface of the end of the fixing plate. The rubber washer is located on the side of the nut close to the center of the fixing plate. The fixing bolt passes through the nut and is connected to the rubber washer.

[0011] As an optimal technical solution, the thrust bearing three-piece set includes a spindle wear-resistant plate, a middle steel plate and a piston wear-resistant plate arranged in sequence from top to bottom. When the tooling is installed, the fixing plate is placed on the spindle wear-resistant plate, and the fixing bolts are tightened until the rubber washer is close to the spindle wear-resistant plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The thrust bearing grinding tool of the utility model can make the contact surface of the three-piece thrust bearing evenly pressurized, create good conditions for liquid lubrication to reduce wear, improve surface roughness, shorten the equipment running-in time, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation of the thrust bearing grinding tool of the utility model;

[0015] Figure 2 It is a side view of the thrust bearing grinding tool of the utility model;

[0016] Figure 3 This is a top view of the thrust bearing grinding tool of the utility model;

[0017] Figure 4 This is a schematic structural diagram of the connecting assembly in the thrust bearing grinding tool of the present invention;

[0018] Figure 5 It is a three-dimensional diagram of a spline sleeve in a thrust bearing grinding tool of the present utility model.

[0019] In the figure: 1. Spline sleeve; 2. Splined eccentric shaft; 3. Sleeve; 4. Spherical support; 5. Spring; 6. Cover plate; 7. Fixing plate; 8. Nut; 9. Fixing bolt; 10. Rubber washer; 11. Spindle wear plate; 12. Middle steel plate; 13. Piston wear plate. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0021] like Figure 3 As shown, a thrust bearing grinding tool comprises a fixing device and a spline sleeve 1. The spline sleeve 1 is as shown in FIG. Figure 5 As shown, the fixing device is connected to the lower part of a splined eccentric shaft 2, the spline sleeve 1 is sleeved on the upper part of the splined eccentric shaft 2, and the fixing device is fixedly installed on the three-piece thrust bearing sleeve.

[0022] The upper part of the splined eccentric shaft 2 is cylindrical with a spline groove, and the lower part is a sphere. One side of the cylindrical upper part is connected to the sphere below through a connecting rod. The cylindrical upper part is not concentric with the connecting rod and has a certain eccentricity. The whole is an integrated molding structure.

[0023] like Figure 3 As shown, the fixing device includes a connecting component, a fixing plate 7 and a plurality of fixing units. The sphere contacts the connecting component, and the connecting component is fixedly connected to the center of the fixing plate 7. In this embodiment, the fixing plate 7 is a cross plate, and there are four fixing units, which are respectively installed at the four ends of the fixing plate 7.

[0024] like Figure 4 As shown, the connection assembly includes a sleeve 3, a spherical support 4, a spring 5, and a cover plate 6. A connection hole is provided above the sleeve 3, through which the connecting rod passes. The sphere and spherical support 4 are located within the sleeve 3. The diameter of the connection hole is smaller than that of the sphere to prevent it from falling out of the sleeve 3. The upper surface of the spherical support 4 is provided with an arc-shaped recessed hole that matches the lower surface of the sphere. The sphere contacts the inner wall of the arc-shaped recessed hole. The spherical support 4 is slidably connected to the sleeve 3. The cover plate 6 is fixed to the bottom end of the sleeve 3. The spring 5 is arranged vertically, with its ends respectively fixed to the lower surface of the spherical support 4 and the upper surface of the cover plate 6. The spline eccentric shaft 2 is driven to rotate by the spline sleeve 1, and downward pressure is applied, which drives the sleeve 3 to rotate accordingly through the ball. At the same time, the spherical support 4 moves downward under pressure, driving the spring 5 to compress, and transferring the pressure to the cover plate 6 and the fixed plate 7 below. Finally, the pressure is transferred to the three-piece thrust bearing. At the same time, the cover plate 6 and the fixed plate 7 rotate with the sleeve 3, thereby driving the piston wear-resistant plate 13 to perform eccentric rotation.

[0025] like Figure 2 As shown, the fixing unit includes a nut 8, a fixing bolt 9, and a rubber washer 10. The nut 8 is fixed to the lower surface of the end of the fixing plate 7. The rubber washer 10 is located on one side of the nut 8 near the center of the fixing plate 7. The fixing bolt 9 passes through the nut 8 and is connected to the rubber washer 10. The configuration of the fixing unit ensures that the fixing plate 7 can be stably fixed to the three-piece thrust bearing sleeve.

[0026] like Figure 1 As shown, the three-piece thrust bearing set includes, from top to bottom, a spindle wear plate 11, a middle steel plate 12, and a piston wear plate 13. During assembly, the fixing plate 7 is placed on the spindle wear plate 11, and the fixing bolts 9 are tightened until the rubber washer 10 is in close contact with the spindle wear plate 11. The rubber washer 10 protects the parts from wear from the fixing bolts 9 when they are clamped and fixed.

[0027] Specifically, before using the tooling, first fix the spline sleeve 1 on the drilling machine, then fix the piston wear-resistant disk 13 in the thrust bearing three-piece set on the work table of the drilling machine, clamp it with a three-jaw chuck, and evenly apply grinding paste on the upper surface of the piston wear-resistant disk 13. Then place the middle steel disk 12, and also evenly apply grinding paste on the upper surface. Continue to place the spindle wear-resistant disk 11, and finally install the fixing device on the spindle wear-resistant disk 11, and tighten the bolts around it so that the rubber gasket 10 is close to the edge of the spindle wear-resistant disk 11.

[0028] When the tooling is in use, the drilling machine is started, and the spline eccentric shaft 2 is driven to rotate through the spline sleeve 1, thereby driving the piston wear-resistant disk 13 to rotate eccentrically through the fixing device. Under the action of friction, there is a relative displacement between the middle steel disk 12 and the spindle wear-resistant disk 11 and the piston wear-resistant disk 13, thereby achieving the purpose of grinding.

[0029] This embodiment is only a further explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the invention, they are protected by patent law.

Claims

1. A thrust bearing grinding tool, characterized in that: The invention comprises a fixing device and a spline sleeve. The fixing device is connected with the lower part of a spline eccentric shaft. The spline sleeve is sleeved on the upper part of the spline eccentric shaft. The fixing device is fixedly installed on a three-piece sleeve of a thrust bearing.

2. The thrust bearing grinding tool according to claim 1, characterized in that: The upper part of the spline eccentric shaft is cylindrical and has a spline groove, and the lower part is a sphere. One side of the cylindrical upper part is connected to the sphere below through a connecting rod. The cylindrical upper part is not concentric with the connecting rod and has an eccentric distance. The whole is an integrated molding structure.

3. The thrust bearing grinding tool according to claim 2, characterized in that: The fixing device includes a connecting assembly, a fixing plate and multiple fixing units. The sphere is in contact with the connecting assembly, and the connecting assembly is fixedly connected to the center of the fixing plate. The number of the fixing units is equal to the number of the ends of the fixing plate, and the fixing units are respectively installed at each end of the fixing plate.

4. The thrust bearing grinding tool according to claim 3, characterized in that: The connecting assembly includes a sleeve, a spherical support, a spring and a cover plate. A connecting hole is opened on the top of the sleeve, the connecting rod passes through the connecting hole, the sphere and the spherical support are located in the sleeve, the diameter of the connecting hole is smaller than the diameter of the sphere, the upper surface of the spherical support is provided with an arc-shaped concave hole matching the lower surface of the sphere, the sphere contacts the inner wall of the arc-shaped concave hole, the spherical support is slidably connected to the sleeve, the cover plate is fixed to the bottom end of the sleeve, the spring is vertically arranged and its two ends are respectively fixed to the lower surface of the spherical support and the upper surface of the cover plate.

5. The thrust bearing grinding tool according to claim 3, characterized in that: The fixing plate is a cross plate.

6. The thrust bearing grinding tool according to claim 3, characterized in that: The fixing unit includes a nut, a fixing bolt and a rubber washer. The nut is fixed to the lower surface of the end of the fixing plate. The rubber washer is located on one side of the nut close to the center of the fixing plate. The fixing bolt passes through the nut and is connected to the rubber washer.

7. The thrust bearing grinding tool according to claim 6, characterized in that: The thrust bearing three-piece set includes a spindle wear plate, a middle steel plate and a piston wear plate arranged in sequence from top to bottom. When the tooling is installed, the fixing plate is placed on the spindle wear plate, and the fixing bolts are tightened until the rubber washer is close to the spindle wear plate.

Images