Gear type PCD (Poly Crystal Diamond) trimmer

Abstract

The utility model belongs to the technical field of precision machining, and particularly relates to a gear type PCD trimmer. The gear type PCD trimmer comprises a supporting base body, a gear-shaped PCD piece and a reinforcing ring which are arranged in a split mode, gear teeth matched with the gear honed by the honing wheel are arranged on the supporting base body in the circumferential direction, and a gear shaft is integrally formed on the supporting base body. A central hole coaxially matched with a gear shaft is formed in the gear-shaped PCD piece, the gear-shaped PCD piece is tightly attached and fixed to the end face of the supporting base body and provided with dressing teeth which correspond to gear teeth one to one and are matched with the gear teeth in shape, and the dressing teeth are used for being meshed with the honing wheel to grind and dressed the honing wheel; the reinforcing ring is fixedly arranged on the gear shaft in a sleeving mode and fixedly attached to the gear-shaped PCD piece. The aluminum profile is low in manufacturing difficulty, high in strength and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of precision machining, and in particular relates to a gear-type PCD dresser. Background Art

[0002] The gear honing wheel is a grinding tool used for honing gears. It is usually made of a material with high hardness and wear resistance. It contacts the tooth surface of the gear during the honing process and grinds the tooth surface of the gear through abrasive particles to improve the quality of the tooth surface and achieve the purpose of improving the accuracy and smoothness of the gear.

[0003] During long-term use, the geometry of the honing wheel will change due to grinding, and uneven grinding marks will form on the surface of the honing wheel after wear. These marks will affect the contact quality between the honing wheel and the gear, resulting in a decrease in the size and shape accuracy of the gear teeth. Therefore, after long-term use, the honing wheel needs to be trimmed to restore its performance and ensure the processing accuracy of the gear.

[0004] In the prior art, a gear-type diamond dressing roller is used to dress the honing wheel. A gear-type diamond dressing roller is a standard steel gear body that is uniformly plated with a layer of diamond abrasive grains along the tooth surface and tooth top. After plating, it is ground for a long time to make its accuracy higher than that of the workpiece being processed, and is used to grind the honing wheel. Finally, the honing wheel is used to finish the tooth surface. Because its manufacturing error needs to be transmitted and magnified to the workpiece through secondary processing, it is difficult to manufacture high-precision complex-profile superhard dressing rollers. Utility Model Content

[0005] The utility model provides a gear-type PCD dresser to solve the technical problem that the existing dresser for dressing a honing wheel is difficult to manufacture.

[0006] In order to solve the above problems, the gear-type PCD dresser provided by the utility model adopts the following technical solutions:

[0007] The gear-type PCD dresser comprises a separately arranged support base, a gear-shaped PCD sheet and a reinforcement ring; the support base has gear teeth matching the gear honed by the honing wheel in the circumferential direction, and a gear shaft is integrally formed on the support base;

[0008] The gear-shaped PCD sheet is provided with a center hole coaxially matching the gear shaft. The gear-shaped PCD sheet is tightly fixed to the end face of the supporting base and has dressing teeth corresponding to the gear teeth one by one and matching in shape. The dressing teeth are used to engage with the honing wheel to grind and dress the honing wheel. The reinforcement ring is sleeved and fixed on the gear shaft and tightly fixed to the gear-shaped PCD sheet.

[0009] The beneficial effects are: the gear-type PCD dresser of the utility model is formed by assembling a separately arranged support base, a gear-shaped PCD piece and a reinforcement ring, that is, the support base, the gear-shaped PCD piece and the reinforcement ring can be processed separately and then assembled; compared with the existing diamond dressing roller, the gear-type PCD dresser of the utility model is easier to manufacture, the deformation of the gear-shaped PCD piece is small, and under the action of the reinforcement ring, the installation strength of the gear-shaped PCD piece is higher and more stable, thereby improving the service life.

[0010] Furthermore, the end surface of the reinforcement ring facing away from the gear-shaped PCD piece is flush with the corresponding end surface of the gear shaft to form a positioning surface.

[0011] Beneficial effect: facilitates overall installation and positioning.

[0012] Furthermore, the trimming tooth has a cutting edge located outside the gear tooth, and the cutting edge of the cutting edge is formed by laser processing.

[0013] Beneficial effects: The cutting edge formed by laser processing has higher precision and consistency, higher sharpness and durability, and better cutting performance.

[0014] Furthermore, the number of the gear teeth and the trimming teeth are both even numbers.

[0015] Beneficial effects: easy to manufacture and process, more balanced when transmitting power, and longer service life.

[0016] Furthermore, the reinforcement ring is a steel reinforcement ring.

[0017] Beneficial effects: The reinforcement ring made of steel material has high strength, good durability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the gear-type PCD dresser of the utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view of

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a gear-shaped PCD piece;

[0022] Figure 4is a schematic diagram of the three-dimensional structure of the reinforcement ring;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the supporting substrate.

[0024] Description of reference numerals:

[0025] 1. Support substrate; 2. Gear-shaped PCD piece; 3. Reinforcement ring; 4. Gear shaft; 5. Gear teeth; 6. Center hole; 7. Dressing teeth. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0028] Embodiment 1 of the gear-type PCD dresser provided by the utility model:

[0029] like Figure 1 and Figure 2 As shown, the gear-type PCD dresser comprises a support base 1, a gear-shaped PCD sheet 2 and a reinforcement ring 3 which are arranged coaxially in separate parts. Figure 5 As shown, the supporting base body 1 has a plurality of gear teeth 5 matching the gear honed by the honing wheel in the circumferential direction, and a gear shaft 4 is integrally formed at the center of the supporting base body 1 .

[0030] like Figure 3 As shown, the gear-shaped PCD piece 2 is also gear-shaped as a whole, and is made of polycrystalline diamond. A center hole 6 coaxially matched with the gear shaft 4 is opened in the center of the gear-shaped PCD piece 2. The gear-shaped PCD piece 2 has a plurality of evenly distributed trimming teeth 7 corresponding to the gear teeth 5 and having the same shape in the circumferential direction. In this embodiment, the number of gear teeth 5 and the trimming teeth 7 are both even numbers. Of course, in other embodiments, the number of gear teeth 5 and the trimming teeth 7 can also be odd numbers. The size of the trimming teeth 7 is larger than the size of the gear teeth 5. The trimming teeth 7 have cutting edges, which are located on the outside of the gear teeth 5 and are formed by laser processing. The trimming teeth 7 are used to mesh with the honing wheel to grind and trim the honing wheel through the cutting edges. During installation, the gear-shaped PCD piece 2 is sleeved on the gear shaft 4 and is tightly fixed to the end face of the support substrate 1. It is connected to the support substrate 1 and the gear shaft 4 by a low-temperature non-welding method.

[0031] like Figure 4As shown, the reinforcement ring 3 is made of steel material with high strength and low processing cost. The ring hole of the reinforcement ring 3 is coaxially matched with the gear shaft 4, and the entire ring is sleeved on the gear shaft 4, tightly fixed with the gear-shaped PCD piece 2, and is also connected to the gear-shaped PCD piece 2 and the gear shaft 4 by low-temperature non-welding. The reinforcement ring 3 can improve the installation strength of the gear-shaped PCD piece 2 and make it more stable. The end face of the reinforcement ring 3 facing away from the gear-shaped PCD piece 2 is flush with the corresponding end face of the gear shaft 4 to form a positioning surface.

[0032] When the utility model is in use, the whole is connected to the transmission shaft on the honing equipment. Through the moving system on the honing equipment, the dressing tooth 7 is moved to the honing wheel to be dressed, so that the dressing tooth 7 is meshed with the honing wheel, and then the transmission shaft is driven to rotate, and the dressing operation can be carried out.

[0033] The supporting base 1, the gear-shaped PCD piece 2 and the reinforcement ring 3 in the gear-type PCD dresser of the utility model can be processed separately and then assembled; compared with the existing diamond dressing roller, the manufacturing difficulty is lower, the delivery cycle is faster, and the tedious grinding process is avoided; the original diamond abrasive particles are replaced with PCD, and under the action of the reinforcement ring 3, the gear-shaped PCD piece 2 has a small deformation, a higher installation strength, and is more stable, which improves the service life and also ensures the dressing accuracy.

[0034] Embodiment 2 of the gear-type PCD dresser provided by the utility model:

[0035] The main difference between this embodiment and Example 1 is that in Example 1, the end face of the reinforcement ring facing away from the gear-shaped PCD sheet is flush with the corresponding end face of the gear shaft to form a positioning surface. In this embodiment, the axial length of the reinforcement ring is smaller than the axial length of the gear shaft, and the inner hole of the gear shaft and the end face of the gear shaft can be used for positioning.

[0036] Embodiment 3 of the gear-type PCD dresser provided by the utility model:

[0037] The main difference between this embodiment and the first embodiment is that in the first embodiment, the reinforcement ring is made of steel. In this embodiment, the reinforcement ring is made of alloy material, such as aluminum alloy.

[0038] In the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Gear-type PCD dresser, characterized in that: It includes a support substrate, a gear-shaped PCD piece and a reinforcement ring which are arranged separately; The supporting base has gear teeth matching the gear honed by the honing wheel in the circumferential direction, and a gear shaft is integrally formed on the supporting base; The gear-shaped PCD sheet is provided with a center hole coaxially matched with the gear shaft, the gear-shaped PCD sheet is tightly fixed to the end surface of the support substrate, and has dressing teeth corresponding to the gear teeth one by one and matching in shape, and the dressing teeth are used to mesh with the honing wheel to grind and dress the honing wheel; The reinforcement ring is sleeved and fixed on the gear shaft and is tightly fixed to the gear-shaped PCD piece.

2. The gear-type PCD dresser according to claim 1, characterized in that: The end surface of the reinforcement ring facing away from the gear-shaped PCD piece is flush with the corresponding end surface of the gear shaft to form a positioning surface.

3. The gear-type PCD dresser according to claim 1, characterized in that: The trimming tooth has a cutting edge located outside the gear tooth, and the cutting edge of the cutting edge is formed by laser processing.

4. The gear-type PCD dresser according to any one of claims 1 to 3, characterized in that: The number of the gear teeth and the trimming teeth are both even numbers.

5. The gear-type PCD dresser according to any one of claims 1 to 3, characterized in that: The reinforcement ring is a steel reinforcement ring.

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