Polishing device for hub bearing steel ball machining

Abstract

The utility model relates to a polishing device for hub bearing steel ball machining, which comprises a cylindrical polishing pipe, the polishing pipe is formed by butting a half pipe I and a half pipe II, a spiral polishing channel is arranged in an inner cavity of the polishing pipe, and the polishing channel comprises a spiral polishing surface and a spiral groove; steel balls can pass through the polishing channel, and any section, perpendicular to the spiral direction of the polishing channel, of the polishing channel is similar to a circle. And when the steel ball passes through the polishing channel, the polishing surface supports the steel ball, and the groove avoids the steel ball. When the polishing surface of the device is abraded, the polishing surface of the polishing channel in the device can be conveniently replaced or re-sprayed; and the polishing channel is internally provided with the polishing surface bearing steel balls and the groove avoiding steel balls, so that the steel balls can be fully rotated to be comprehensively polished under the common influence of the gravity of the steel balls and the friction force of the polishing surface when passing through the polishing channel, and the steel balls cannot stop passing due to overlarge friction force.

Description

Technical Field

[0001] The utility model relates to the technical field of steel ball processing, in particular to a polishing device for processing hub bearing steel balls. Background Art

[0002] Bearing steel balls are commonly known as steel balls and rolling balls. They have a long history of use in the precision bearing industry and in the field of life and are widely used. It can be said that steel balls exist in most places where there is movement.

[0003] Authorization announcement No. CN 111230667 B discloses a multi-station high-efficiency polishing equipment for bearing steel balls. The equipment is equipped with a secondary polishing device including a spring tube (a spring-shaped hollow tube). A polishing layer is provided inside the spring tube. The steel ball rolls and slides using the inclination of the spring tube. The steel ball rubs against the polishing layer through rolling, thereby performing a secondary comprehensive polishing on the steel ball, so that the steel ball is polished without dead angles, which helps to improve the quality of the steel ball.

[0004] However, there are still some problems with the spring tube polishing device shown in the above-mentioned public document. Generally speaking, the friction force on the surface of the polishing layer is relatively large, and the polishing layer in the above-mentioned public document covers the inner surface of the spring tube. Therefore, when the gravity of the steel ball itself cannot overcome the friction force of the polishing layer, the steel ball will not be able to continue to pass through the spring tube; in addition, the structure of the spring rod means that if the polishing layer is worn out, it cannot be replaced or re-sprayed, and a new spring tube can only be replaced. The process difficulty of setting the polishing layer on the new spring tube is also relatively high. Utility Model Content

[0005] The utility model aims to provide a polishing device for processing a hub bearing steel ball, which is used to solve the above-mentioned problems existing in the prior art.

[0006] In order to solve the above problems, the utility model provides a polishing device for processing wheel hub bearing steel balls, including a cylindrical polishing tube, which is formed by connecting half tube one and half tube two, and the inner cavity of the polishing tube is provided with a spiral polishing channel, and the polishing channel includes a spiral polishing surface and a spiral groove; the polishing channel can pass the steel ball, and any cross-section of the polishing channel perpendicular to its spiral direction is quasi-circular; the diameter of any cross-section on the polishing surface perpendicular to its spiral direction is equal to the diameter of the steel ball, and the diameter of any cross-section on the groove perpendicular to its spiral direction is greater than the diameter of the steel ball; when the steel ball passes through the polishing channel, the polishing surface supports the steel ball, and the groove avoids the steel ball.

[0007] The polishing device for processing hub bearing steel balls provided by the utility model also has the following technical features:

[0008] Furthermore, the length direction of the polishing tube coincides with the center of gravity direction of the steel ball.

[0009] Furthermore, there is an angle between the length direction of the polishing tube and the center of gravity direction of the steel ball.

[0010] Furthermore, the pitch of the polishing channel is twice or more than the diameter of any cross section on the polishing surface perpendicular to its spiral direction.

[0011] Furthermore, the polishing surface and the groove are connected via a rounded corner.

[0012] Furthermore, the surface area of ​​the polishing surface accounts for 50% or more of the surface area of ​​the polishing channel.

[0013] Furthermore, the half-tube 1 and the half-tube 2 are symmetrical except for the polishing channel.

[0014] Furthermore, the diameter of any cross section of the polishing channel perpendicular to its spiral direction coincides with the central axis of the polishing tube.

[0015] Furthermore, the half pipe one and the half pipe two are fixed by connecting ears.

[0016] Furthermore, the polishing tube is provided with a connecting flange at the inlet of the steel ball, and the connecting flange is used to fix the connection to the funnel-like component that receives the steel ball.

[0017] The utility model has the following beneficial effects: the polishing tube is assembled by connecting and fixing two half tubes, and the polishing surface of the polishing channel therein can be conveniently replaced or re-sprayed; the polishing channel is provided with a polishing surface to support the steel ball, and a groove is provided to avoid the steel ball, so that when the steel ball passes through the polishing channel, it can be fully rotated and fully polished under the combined influence of its own gravity and the friction of the polishing surface, and will not stop passing due to excessive friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure and structural decomposition schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the exploded structure of the half pipe one and the half pipe two of the utility model;

[0020] Figure 3 for Figure 2 Detailed view of point B in the middle;

[0021] Figure 4 for Figure 1 Cross-section view at line AA. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0023] like Figures 1 to 4 In the embodiment of the polishing device for processing hub bearing steel balls of the utility model shown in the figure, the polishing device for processing hub bearing steel balls includes a cylindrical polishing tube, and the cylindrical body can be a regular cylindrical body such as a cylinder, a rectangular parallelepiped, a hexagonal prism, etc. The polishing tube shown in the figure adopts a cylindrical body; the polishing tube is formed by docking half tube 1 and half tube 2, and the polishing tube is formed by docking. After disassembly, the polishing layer can be easily replaced or re-sprayed.

[0024] Please continue reading Figures 1 to 4 The inner cavity of the polishing tube is provided with a spiral polishing channel 10, and the polishing channel 10 can pass the steel ball. In this embodiment, the steel ball passes through the polishing channel 10 by its own gravity. The polishing channel 10 includes a spiral polishing surface 11 and a spiral groove 12. In the figure, the pitch of the polishing surface 11 and the groove 12 are consistent. Any cross section of the polishing channel 10 perpendicular to its spiral direction is similar to a circle; because the radius of the polishing surface 11 and the groove 12 are different, the polishing channel formed by the two is similar to a circle, such as Figure 4 The top view of the polishing tube shown in the figure shows that the fillet 13 is the boundary between the polishing surface 11 and the groove 12. The polishing surface 11 and the groove 12 in the figure are both part of a circle, and the polishing channel 10 in the figure is generally quasi-circular. The diameter of any cross section on the polishing surface 11 perpendicular to its spiral direction is equal to the diameter of the steel ball, so that the steel ball can fully contact the polishing surface 11; the diameter of any cross section on the groove 12 perpendicular to its spiral direction is larger than the diameter of the steel ball, so that only part of the spherical surface of the steel ball is subjected to the friction of the polishing channel 10, that is, the groove 12 partially avoids the steel ball, so as to reduce the friction that the steel ball needs to overcome when passing through the polishing channel 10. When the steel ball passes through the polishing channel 10, the polishing surface 11 supports the steel ball, and the groove 12 avoids the steel ball, that is, when the steel ball passes through the polishing channel 10 relying on its own gravity, the steel ball always contacts the polishing surface 11, but not the groove 12, and the polishing surface 11 and the gravity of the steel ball itself act together to polish the steel ball; in general, when the steel ball passes through the polishing channel 10, the polishing surface 11 contacts the surface from the center of gravity of the steel ball to the lowest surface, and the groove 12 avoids the surface above the center of gravity of the steel ball. In this way, when the steel ball passes through the polishing channel 10, it can be fully rotated and fully polished under the influence of its own gravity and the friction of the polishing surface 11, and it will not stop passing due to excessive friction.

[0025] In one embodiment of the present application, the length direction of the polishing tube coincides with the center of gravity direction of the steel ball. In this way, the steel ball can be affected by its own gravity to the maximum extent when passing through the polishing channel 10, thereby further increasing the friction of the polishing surface 11 to increase the polishing effect.

[0026] In one embodiment of the present application, preferably, there is an angle between the length direction of the polishing tube and the center of gravity direction of the steel ball, and this angle is based on the fact that the steel ball can rely on its own gravity to overcome the friction of the polishing surface 11 and continue to pass through the polishing channel 10; in this way, the existing angle can make the steel ball rotate in more directions when passing through the polishing channel 10, thereby achieving more comprehensive polishing.

[0027] In one embodiment of the present application, preferably, Figure 3 , Figure 4 As shown, the polishing surface 11 and the groove 12 are connected by a rounded corner 13 to prevent the steel ball from being bumped and scratched when passing through the polishing channel 10.

[0028] In one embodiment of the present application, preferably, Figure 3 , Figure 4 As shown, the surface area of ​​the polishing surface 11 accounts for 50% or more of the surface area of ​​the polishing channel 10. In this way, when the steel ball passes through the polishing channel 10, the contact area with the polishing surface 11 can be maximized due to its own gravity, so that polishing can be performed more thoroughly.

[0029] In one embodiment of the present application, preferably, Figure 2 As shown, the half pipe 1 and the half pipe 2 are symmetrical except for the polishing channel 10; and Figure 4 As shown, the diameter of any cross section of the polishing channel 10 perpendicular to its spiral direction coincides with the central axis of the polishing tube. Figure 4 The point C marked in the figure is the above-mentioned overlap point; in this way, when the polishing layer is replaced or re-sprayed after the half-tube 1 and the half-tube 2 are disassembled, the problem of being unable to replace or spray the polishing layer will not occur due to the mutual obstruction of the polishing surface 11 and the groove 12.

[0030] In one embodiment of the present application, preferably, Figure 1 , Figure 2 As shown, tube one 1 and half tube two 2 are butt-jointed and fixed via connecting ears 20.

[0031] In one embodiment of the present application, preferably, Figure 1 , Figure 4As shown, the polishing tube is provided with a connection flange 30 at the entrance of the steel ball, and the connection flange 30 is used to fix and connect the funnel-like component that receives the steel ball. The connection flange 30 can be integrally provided at one end of the half pipe 1 or the half pipe 2, or as shown in the figure, the connection flange 30 is separately provided at one end of the half pipe 1 and the half pipe 2, and is formed by butting two pieces.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A polishing device for processing a hub bearing steel ball, characterized in that: The invention comprises a cylindrical polishing tube, wherein the polishing tube is formed by butt-jointing a half tube (1) and a half tube (2), wherein the inner cavity of the polishing tube is provided with a spiral polishing channel (10), wherein the polishing channel (10) comprises a spiral polishing surface (11) and a groove (12) having the same pitch; the polishing channel (10) can pass a steel ball, and any cross section of the polishing channel (10) perpendicular to its spiral direction is quasi-circular; the diameter of any cross section of the polishing surface (11) perpendicular to its spiral direction is equal to the diameter of the steel ball, and the diameter of any cross section of the groove (12) perpendicular to its spiral direction is greater than the diameter of the steel ball; when the steel ball passes through the polishing channel, the polishing surface (11) supports the steel ball, and the groove (12) avoids the steel ball.

2. The polishing device for processing hub bearing steel balls according to claim 1, characterized in that: The length direction of the polishing tube coincides with the center of gravity direction of the steel ball.

3. The polishing device for processing hub bearing steel balls according to claim 1, characterized in that: There is an angle between the length direction of the polishing tube and the center of gravity direction of the steel ball.

4. The polishing device for processing hub bearing steel balls according to claim 1, characterized in that: A rounded corner (13) is provided between the polishing surface (11) and the groove (12).

5. The polishing device for processing hub bearing steel balls according to claim 1, characterized in that: The surface area of ​​the polishing surface (11) accounts for 50% or more of the surface area of ​​the polishing channel (10).

6. The polishing device for processing a hub bearing steel ball according to claim 1, characterized in that: The half-tube one (1) and the half-tube two (2) are symmetrical with respect to the rest of the half-tube except for the polishing channel (10).

7. The polishing device for processing a hub bearing steel ball according to claim 6, characterized in that: The diameter of any cross section of the polishing channel (10) perpendicular to its spiral direction coincides with the central axis of the polishing tube.

8. The polishing device for processing a hub bearing steel ball according to claim 1 or 7, characterized in that: The half pipe one (1) and the half pipe two (2) are butt-jointed and fixed via a connecting ear (20).

9. The polishing device for processing a hub bearing steel ball according to claim 1 or 7, characterized in that: The polishing tube is provided with a connecting flange (30) at the inlet of the steel ball, and the connecting flange (30) is used to fix and connect a funnel-like component that receives the steel ball.

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