Device for removing coating on raceway of crossed roller bearing

Abstract

The utility model relates to a crossed roller bearing raceway coating removing device which comprises a grinding cutter and a cutter bar assembly, the cutter bar assembly comprises a cutter bar and a connecting block, the connecting block is connected to one end of the cutter bar in an angle-adjustable mode, the grinding cutter is provided with a grinding head part and a cutter body part, and the grinding head part is provided with a grinding head. The grinding cutter is fixedly connected with the connecting block through the cutter body part, the top end of the grinding head part is in a 90-degree cone shape, the grinding head part is made of resin and CBN abrasive particles, and the base material of the cutter body part is 45 # steel. Clamping and positioning are convenient, machining precision is high, roundness and roughness of a raceway of a product are improved, working performance stability of the bearing is improved, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of bearing processing equipment, and in particular to a device for removing the coating on the raceway of a crossed roller bearing. Background Technology

[0002] Due to application requirements, some crossed roller bearings require rust prevention treatment, such as overall black chrome plating. However, because the product has high requirements for radial clearance, the coating thickness of the raceway has issues, which will affect assembly accuracy. Therefore, it is necessary to remove the raceway coating without damaging the coating on the rest of the product.

[0003] In the existing technology, there are two main methods for removing the coating on the raceway. One is grinding, which causes marks on the outer diameter of the product due to friction between the product and the clamping area after processing. The other is manual grinding, which has low processing precision and affects the dimensional accuracy of the raceway. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a method for removing the coating from the raceway of crossed roller bearings that is convenient for clamping and positioning and has high processing accuracy. In response to this method, a device for removing the coating from the raceway of crossed roller bearings is designed.

[0005] The present invention relates to a device for removing the coating on the raceway of a crossed roller bearing, which is achieved through the following technical solution: A device for removing the coating on the raceway of a crossed roller bearing includes a grinding cutter and a tool holder assembly. The tool holder assembly includes a tool holder and a connecting block. The grinding cutter has a grinding head and a blade. The grinding cutter is fixedly connected to the connecting block through the blade. The top of the grinding head is conical.

[0006] To accommodate products of different diameters, locate the center of the product for grinding, and improve the versatility of the processing device, the connecting block is angularly adjustable and connected to one end of the tool holder, thereby enabling the grinding tool angle to be adjustable.

[0007] To achieve adjustable angle of the connecting block and improve connection reliability, the connecting block has a connecting boss at one end, and the tool bar has a connecting countersunk hole that matches the connecting boss at one end. The connecting block is set in the connecting countersunk hole through the connecting boss and can rotate freely in the connecting countersunk hole. The connecting block has a threaded hole with the connecting boss end face facing inward and is fixedly connected to one end of the tool bar with bolts.

[0008] To better support the connection, the blade extends into the grinding head.

[0009] Based on the shape of the product raceway, the tip of the grinding head is preferably 90° conical. However, other angles of the grinding head tip can also be designed depending on the actual situation.

[0010] To improve grinding efficiency and enhance raceway roughness and precision, the grinding head is preferably made of resin with CBN abrasive particles. However, other materials may be selected for the grinding head depending on the specific circumstances.

[0011] Preferably, the base material of the blade is 45 steel. However, other base materials can be used for the blade depending on the actual situation.

[0012] The beneficial effects of this utility model are as follows: This cross roller bearing raceway plating removal device combines the advantages of grinding and turning, replacing grinding with turning. It uses a specially designed grinding tool and tool holder to perform plating removal on a CNC lathe, replacing the traditional grinding process in the prior art. It eliminates the need for support feet to support the outer diameter, and only requires the product to be held and rotated by jaws. There is no friction between the product and the clamping area. While rotating, the raceway is polished separately using a grinding method. This processing method has been verified to have no change in raceway dimensions and bearing clearance. At the same time, it has high processing accuracy, improves the roundness and roughness of the product raceway, and enhances the stability of bearing performance and service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the cross roller bearing raceway plating removal device of this utility model;

[0014] Figure 2 This is a schematic diagram of the grinding tool of the cross roller bearing raceway plating removal device of this utility model;

[0015] Figure 3 This is a partial cross-sectional view of the grinding tool of the cross roller bearing raceway plating removal device of this utility model;

[0016] Figure 4 A schematic diagram illustrating the working state of the cross roller bearing inner ring processed by the cross roller bearing raceway plating removal device of this utility model.

[0017] In the figure: 1. Grinding tool; 11. Grinding head; 12. Tool body; 2. Tool holder assembly; 21. Tool holder; 211. Connecting countersunk hole; 22. Connecting block; 221. Connecting boss; 8. Bolt; 9. Product; 91. Raceway. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0019] like Figure 1The apparatus shown is a cross roller bearing raceway plating removal device, including a grinding tool 1 and a tool holder assembly 2. The tool holder assembly 2 includes a tool holder 21 and a connecting block 22. The connecting block 22 is angularly adjustable and connected to one end of the tool holder 21. Specifically, one end of the connecting block 22 has a connecting boss 221, and one end of the tool holder 21 has a connecting countersunk hole 211 that matches the connecting boss 221. The connecting block 22 is disposed in the connecting countersunk hole 211 through the connecting boss 221 and can rotate freely in the connecting countersunk hole 211. The connecting block 22 has a threaded hole facing inward from the end of the connecting boss 221 and is fixedly connected to one end of the tool holder 21 by a bolt 8.

[0020] like Figure 2-3 As shown, the grinding tool 1 has a grinding head 11 and a blade 12. The blade 12 extends into the grinding head 11. The grinding tool 1 is fixedly connected to the connecting block 22 through the blade 12. The top of the grinding head 11 is conical with an angle α of 90°. The material of the grinding head 11 is resin with CBN abrasive particles. The base material of the blade 12 is 45 steel.

[0021] like Figure 4 As shown, when using the cross roller bearing raceway plating removal device to remove the plating from the raceway 91 of product 9, firstly, product 9 is clamped by the jaws on the lathe, then the tool holder assembly 2 is clamped on the tool holder, and a suitable grinding tool 1 is selected and clamped on the connecting block 22 through the tool body 12.

[0022] Then, according to the diameter of product 9, adjust the angle of connecting block 22 and tighten it with bolt 8 to adjust the grinding tool 1 to the appropriate angle.

[0023] Finally, the lathe is started, and the chuck drives the product 9 to rotate. Turning is used instead of grinding, and grinding tool 1 is used instead of turning tool to remove the coating from the raceway 91 of product 9.

[0024] In this embodiment, product 9 is the inner ring of a crossed roller bearing. The principle of processing the outer ring of the crossed roller bearing using the crossed roller bearing raceway plating removal device of this utility model is similar to the above process.

[0025] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A device for removing raceway plating from crossed roller bearings, characterized in that: The invention includes a grinding tool and a tool holder assembly. The tool holder assembly includes a tool holder and a connecting block. The connecting block is angularly adjustable and connected to one end of the tool holder. The grinding tool has a grinding head and a blade portion. The grinding tool is fixedly connected to the connecting block through the blade portion. The top of the grinding head is tapered.

2. The apparatus for removing the raceway plating of a crossed roller bearing according to claim 1, characterized in that: The connecting block has a connecting boss at one end, and the tool bar has a connecting countersunk hole that matches the connecting boss at one end. The connecting block is set in the connecting countersunk hole through the connecting boss and can rotate freely in the connecting countersunk hole. The connecting block has a threaded hole opened inward from the end face of the connecting boss and is fixedly connected to one end of the tool bar with bolts.

3. The apparatus for removing the raceway plating of a crossed roller bearing according to claim 1, characterized in that: The grinding head has a 90° conical tip.

4. The apparatus for removing the raceway plating of a crossed roller bearing according to claim 3, characterized in that: The grinding head is made of resin with CBN abrasive particles.

5. The apparatus for removing raceway plating from crossed roller bearings according to claim 1, characterized in that: The blade extends into the grinding head.

6. The apparatus for removing raceway plating from crossed roller bearings according to claim 5, characterized in that: The base material of the blade is 45 steel.

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