Tooth-shaped lining processing jig

Abstract

The utility model relates to the technical field of processing jigs, and discloses a tooth-shaped lining processing jig, which comprises a jig main body and a protective sleeve, the jig main body is integrally of a cylindrical structure, the end part of the jig main body is provided with an expansion piece, the expansion piece is of an arc-shaped structure, the expansion piece is annularly distributed at the end part of the jig main body, and the protective sleeve is arranged at the end part of the jig main body. A contraction groove is formed between the expansion pieces; the whole protective sleeve is annular, the protective sleeve is connected with the jig main body through a thread structure, and a reinforcing sleeve is arranged on the side face of the protective sleeve and sleeves the outer side of the expansion piece; a toothed belt is arranged outside the expansion piece, and a rack is arranged outside the toothed belt; when the machining jig is used, the gear lining needing to be machined is arranged outside the expansion piece in a sleeved mode, the ejector pin abuts against the expansion piece, the expansion piece is expanded outwards, and therefore the rack on the expansion piece and the clamping teeth on the inner side of the gear lining are clamped with each other; the whole device is convenient to use and convenient to disassemble and assemble, and errors such as looseness are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of processing fixtures, and more specifically, to a processing fixture for toothed brake pads. Background Art

[0002] Toothed brake pads are key safety parts in the bicycle braking system, mainly responsible for generating resistance by frictional contact with the brake disc, so as to slow down or stop the bicycle. As an important part of the bicycle braking system, the performance and quality of toothed brake pads directly affect the safety of cycling.

[0003] When processing toothed brake pads, they need to be installed on a fixture. Currently, the existing fixture and the toothed brake pads are installed and connected by screws. This connection method is prone to shaking and loosening after a period of processing, which will cause obstacles to subsequent processing. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a processing fixture for toothed brake pads, which has the advantage of more precise operation.

[0005] To achieve the above object, the utility model provides the following technical solution: A processing fixture for toothed brake pads, comprising: a fixture main body and a protective sleeve. The fixture main body is integrally cylindrical. An extension member is provided at the end of the fixture main body. The extension member is arc-shaped and is annularly distributed at the end of the fixture main body. A contraction groove is provided between the extension members. The protective sleeve is integrally annular and is connected to the fixture main body through a threaded structure. And a reinforcing sleeve is provided on the side of the protective sleeve and sleeved outside the extension member. A toothed belt is provided outside the extension member, and a rack is provided outside the toothed belt.

[0006] As a preferred technical solution of the utility model, the radian of the extension member is set to 85° - 88°, and four groups of extension members are provided in an annular array; an annular groove is formed inside the extension member, and a pressing surface is provided on the side of the annular groove facing away from the fixture main body.

[0007] As a preferred technical solution of the utility model, the pressing surface is set as a frustum-shaped curved surface, and the angle between the pressing surface and the central axis of the fixture main body is 45° - 60°.

[0008] As a preferred technical solution of the utility model, a threaded belt is provided on the fixture main body, and the protective sleeve is connected to the threaded belt; a first reinforcing layer is provided inside the reinforcing sleeve, and a second reinforcing layer is provided inside the first reinforcing layer; the second reinforcing layer is sleeved outside the extension member through a buffer belt.

[0009] As a preferred technical solution of the utility model, the first reinforcement layer is made of metal material, the second reinforcement layer is made of rubber material, and the buffer belt is an annular ring made of rubber material and is evenly provided with multiple layers.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: when the processing jig provided by the utility model is used, the gear plate to be processed is sleeved on the outside of the extension piece, the extension piece is supported by the ejector pin, and the extension piece is expanded outward, so that the rack on the extension piece and the inner teeth of the gear plate are stuck to each other; the device as a whole is easy to use and easy to disassemble and assemble, and errors such as looseness are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the main structure of the fixture of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the protective cover of the utility model;

[0015] In the figure: 1. fixture body; 11. extension piece; 12. contraction groove; 13. toothed belt; 14. rack; 15. annular groove; 16. tightening surface; 17. threaded belt; 2. protective sleeve; 21. reinforcement sleeve; 22. reinforcement layer one; 23. reinforcement layer two; 24. buffer belt. DETAILED DESCRIPTION

[0016] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figures 1 to 4As shown, the utility model provides a toothed brake pad processing jig, comprising: a jig body 1 and a protective cover 2, wherein the jig body 1 is in a cylindrical structure as a whole, and an extension piece 11 is arranged at the end of the jig body 1, and the extension piece 11 is an arc-shaped structure. The extension pieces 11 are distributed in a ring shape at the end of the jig body 1, and contraction grooves 12 are arranged between the extension pieces 11; the protective cover 2 is in a ring shape as a whole, and the protective cover 2 is connected to the jig body 1 through a threaded structure, and a reinforcing cover 21 is arranged on the side of the protective cover 2 and is sleeved on the outside of the extension piece 11; a toothed belt 13 is arranged on the outside of the extension piece 11, and a rack 14 is arranged on the outside of the toothed belt 13.

[0018] During processing, the end of the jig body 1 where the extension piece 11 is not provided is clamped and fixed, and the toothed plate to be processed is put on the extension piece 11, so that the inner side of the plate will be engaged with the rack 14 on the toothed belt 13 through the latching teeth; then, the ejector pin is nailed into the annular groove 15 in the middle of the extension piece 11 to press against the extension piece 11 and expand it outward, so that the rack 14 is tightly engaged with the latching teeth; compared with the screw fixing method, this fixing method is more stable and will not loosen after a period of processing.

[0019] The curvature of the extension piece 11 is set to 85°~88°, and four groups of extension pieces 11 are arranged in a circular array; an annular groove 15 is formed on the inner side of the extension piece 11, and a tightening surface 16 is arranged in the direction facing away from the fixture body 1 of the annular groove 15. The tightening surface 16 is set to a truncated cone-shaped curved surface, and the angle between the tightening surface 16 and the central axis of the fixture body 1 is 45°~60°.

[0020] The pressing surface 16 is configured as a frustum, which can be clamped with the ejector pin, and as the ejector pin is clamped in tighter and tighter, the state after the clamping is fully ensured.

[0021] Among them, a threaded belt 17 is provided on the fixture body 1, and the protective sleeve 2 is connected to the threaded belt 17; a reinforcing layer 1 22 is provided inside the reinforcing sleeve 21, and a reinforcing layer 23 is provided inside the reinforcing layer 1 22; the inner side of the reinforcing layer 23 is covered on the outside of the extension piece 11 through a buffer belt 24.

[0022] The first reinforcement layer 22 and the second reinforcement layer 23 jointly increase the structural strength of the reinforcement sleeve 21 , thereby ensuring that the reinforcement sleeve 21 suppresses the extension member 11 and prevents the extension member 11 from excessively expanding outward and causing structural damage.

[0023] The first reinforcement layer 22 is made of metal material, the second reinforcement layer 23 is made of rubber material, and the buffer belt 24 is an annular ring made of rubber material and is evenly provided with multiple layers.

[0024] The buffer strip 24 is in direct contact with the expansion member 11. On the one hand, it has the effect of protecting the expansion member 11, avoiding rigid collision with external structures and preventing damage. On the other hand, the buffer strip 24 supported by rubber material can deform to match the expansion of the expansion member 11, meeting the usage requirements.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A toothed brake pad processing jig, characterized in that: The invention comprises: a jig body (1) and a protective sleeve (2); the jig body (1) is in an overall cylindrical structure; an extension piece (11) is arranged at the end of the jig body (1); the extension piece (11) is in an arc-shaped structure; the extension pieces (11) are distributed in an annular shape at the end of the jig body (1); contraction grooves (12) are arranged between the extension pieces (11); the protective sleeve (2) is in an overall annular shape; the protective sleeve (2) is connected to the jig body (1) via a threaded structure; a reinforcing sleeve (21) is arranged on the side of the protective sleeve (2) and is sleeved on the outside of the extension piece (11); a toothed belt (13) is arranged outside the extension piece (11); a rack (14) is arranged outside the toothed belt (13).

2. The toothed brake pad processing jig according to claim 1, characterized in that: The curvature of the extension piece (11) is set to 85°-88°, and the extension piece (11) is arranged in four groups in a circular array; an annular groove (15) is formed on the inner side of the extension piece (11), and a tightening surface (16) is provided in the direction of the annular groove (15) facing away from the fixture body (1).

3. The toothed brake pad processing jig according to claim 2, characterized in that: The pressing surface (16) is configured as a truncated cone-shaped curved surface, and the angle between the pressing surface (16) and the central axis of the fixture body (1) is 45° to 60°.

4. The toothed brake pad processing jig according to claim 1, characterized in that: The fixture body (1) is provided with a threaded belt (17), and the protective sleeve (2) is connected to the threaded belt (17); a reinforcing layer 1 (22) is provided inside the reinforcing sleeve (21), and a reinforcing layer 2 (23) is provided inside the reinforcing layer 1 (22); the inner side of the reinforcing layer 2 (23) is sleeved onto the outside of the extension piece (11) via a buffer belt (24).

5. The toothed brake pad processing jig according to claim 4, characterized in that: The first reinforcement layer (22) is made of metal material, the second reinforcement layer (23) is made of rubber material, and the buffer belt (24) is an annular ring made of rubber material and is evenly provided with multiple layers.

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