Bevel flat grinding jig

Abstract

This utility model discloses a bevel grinding fixture for clamping products to be processed. The bevel grinding fixture includes a base, a support seat, and an elastic element located on the base. The base has several fixing grooves recessed downwards from the top surface. Each fixing groove accommodates an elastic element and two supports, with the two supports symmetrically arranged on both sides of the elastic element. The support seat has a vertically extending inner side, an outer side inclined to the inner side, and a positioning block protruding from the outer side toward the inner wall of the fixing groove. The product is fitted onto the positioning block. The elastic element pushes against the inner side of the support seat so that the outer side of the support seat and the inner wall of the fixing groove jointly clamp and fix the product. At this time, the top surface of the product is parallel to the top surface of the base; that is, the top surface of the product to be ground is adjusted to a horizontal state. Thus, the bevel grinding process can be used for batch processing, with stable dimensions and significant cost advantages.

Description

Technical Field

[0001] This utility model relates to the field of grinding tooling technology, and in particular to a bevel grinding fixture for powder metallurgy products with irregular shapes. Background Technology

[0002] To meet customer requirements, powder injection molded products often require a mirror-like surface finish to enhance their appearance and aesthetics. However, the surface of powder injection molded products is relatively rough after sintering, making direct sandblasting ineffective. Achieving a mirror finish typically requires surface roughening to remove the outer layer, followed by polishing or surface grinding. As assembly components, perfect dimensional fit is also crucial. Common surface roughening processes include hand polishing and CNC machining. However, hand polishing suffers from instability due to manual operation, while CNC machining is costly. Therefore, surface grinding fixtures are necessary, especially for irregularly shaped products where precise dimensional accuracy of the ground surface is critical. To address this, a surface grinding fixture is needed that effectively positions irregularly shaped metal powder metallurgy products, ensuring they remain stable during grinding, maintaining their appearance, and guaranteeing the dimensional stability of the ground surface.

[0003] Therefore, it is hoped that a new inclined plane grinding fixture can be proposed to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model is to provide a sloping surface grinding fixture, which can adjust the top surface of the product to be ground to a horizontal state.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a beveled surface grinding fixture for clamping a product to be processed. The beveled surface grinding fixture includes a base and bearings and elastic elements located on the base. The base has several fixing grooves recessed downwards from the top surface. Each fixing groove accommodates one elastic element and two bearings, with the two bearings symmetrically arranged on both sides of the elastic element. The bearing has a vertically extending inner side, an outer side inclined to the inner side, and a positioning block protruding from the outer side toward the inner wall of the fixing groove. The product is fitted onto the positioning block, and the elastic element pushes against the inner side of the bearing so that the outer side of the bearing and the inner wall of the fixing groove jointly clamp and fix the product. At this time, the top surface of the product is parallel to the top surface of the base.

[0006] In a preferred embodiment, the inclination of the outer surface of the bearing is the same as the inclination of the inner wall of the fixing groove.

[0007] In a preferred embodiment, the top surface of the support is not higher than the top surface of the base, the product has a lower docking part and an upper processing part, the docking part is sleeved on the positioning block, and the processing part protrudes upward from the top surface of the base.

[0008] In a preferred embodiment, the product is clamped between the bearing and the base, the two sides of the mating portion are respectively attached to the outer side of the bearing and the inner wall of the fixing groove, and the top surface of the processing portion is parallel to the top surface of the base.

[0009] In a preferred embodiment, the product is provided with a docking hole penetrating the docking portion and an abutting portion extending upward from the bottom surface of the docking hole, and the positioning block is inserted into the docking hole and partially abuts against the abutting portion.

[0010] In a preferred embodiment, the base is circular and has several protrusions extending upward from the plane containing the bottom surface of the fixing groove. The protrusions are evenly arranged circumferentially to form the fixing groove.

[0011] In a preferred embodiment, the base is provided with a limiting part that protrudes upward from the bottom surface of the fixing groove, the limiting part is located between two adjacent protruding parts, and the bearing abuts against the limiting part.

[0012] In a preferred embodiment, the base has a receiving cavity recessed downward from the bottom of the fixing groove, and the elastic member has a spring block partially received in the receiving cavity and a pressing block located above the spring block. The pressing block moves downward to push the spring block.

[0013] In a preferred embodiment, the spring block has a bottom wall portion accommodated in the accommodating cavity, spring arms extending upward from both sides of the bottom wall portion, and a pressing portion located at the end of the spring arms. The two spring arms are located between the two bearings, and the pressing block is located between the two pressing portions.

[0014] In a preferred embodiment, the two pressing portions of the spring block protrude toward each other, and the pressing block is arranged in an inverted trapezoidal shape and has a pressing surface corresponding to the pressing portion; when the pressing block moves downward, the pressing surface of the pressing block drives the pressing portion to push against the inner side of the bearing, so as to cause the bearing to move toward the inner wall of the fixing groove to clamp and fix the product.

[0015] Compared with the prior art, this utility model has the following advantages: The support has a vertically extending inner side, an outer side inclined to the inner side, and a positioning block protruding from the outer side toward the inner wall of the fixing groove. The product is sleeved on the positioning block. The elastic element pushes against the inner side of the support so that the outer side of the support and the inner wall of the fixing groove jointly clamp and fix the product. At this time, the top surface of the product is parallel to the top surface of the base. The distance between the outer side of the support and the inner wall of the fixing groove of the base is designed according to the thickness of the product. When the product is clamped and fixed in the inclined surface grinding fixture, the top surface of the product is parallel to the top surface of the base, that is, the top surface of the product to be ground is adjusted to a horizontal state; thus, the flat grinding process can be used for batch processing, with stable dimensions and obvious cost advantages. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the inclined plane grinding fixture in a preferred embodiment of the present invention.

[0017] Figure 2 yes Figure 1 The top view of the inclined plane grinding fixture shown.

[0018] Figure 3 yes Figure 2 A partially enlarged view of the inclined plane grinding fixture shown.

[0019] Figure 4 yes Figure 1 The front view of the inclined plane grinding fixture shown.

[0020] Figure 5 yes Figure 4 The diagram shows an exploded view of the inclined plane grinding fixture.

[0021] Figure 6 yes Figure 4 A partially enlarged view of the inclined plane grinding fixture shown.

[0022] Figure 7 yes Figure 6 A partial sectional view of the inclined plane grinding fixture shown.

[0023] Figure 8 yes Figure 1 The front view of the product held by the inclined plane grinding fixture shown. Detailed Implementation

[0024] Please see Figures 1 to 8As shown, a preferred embodiment of this utility model discloses a beveled surface grinding fixture 100 for clamping and fixing powder metallurgy products with irregular structures. The beveled surface grinding fixture 100 is used to clamp the product 40 to be processed and includes a base 10 and bearings 20 and elastic elements 30 located on the base 10; the base 10 is provided with several fixing grooves 11 recessed from the top surface downwards, each fixing groove 11 accommodating an elastic element 30 and two bearings 20, and the two bearings 20 are symmetrically arranged on both sides of the elastic element 30.

[0025] In this embodiment, the base 10 is circular and has several protruding portions 12 extending upward from the plane containing the bottom surface of the fixing groove 11. The protruding portions 12 are evenly arranged circumferentially to surround and form the fixing groove 11. The base 10 also has a limiting portion 13 extending upward from the bottom surface of the fixing groove 11. Each limiting portion 13 is located between two adjacent protruding portions 12, and the bearing 20 abuts against the limiting portion 13 in the radial direction to limit the bearing 20 in the radial direction.

[0026] Please see Figures 3 to 7 As shown, the support 20 has a vertically extending inner side 21, an outer side 22 that is opposite to and inclined to the inner side 21, and a positioning block 23 that protrudes from the outer side 22 toward the inner wall of the fixing groove 11. The product 40 is fitted onto the positioning block 23 (the top surface of the product 40 is inclined relative to itself). When the elastic member 30 pushes against the inner side 21 of the support 20, the support 20 moves toward the inner wall of the fixing groove 11, so that the outer side 22 of the support 20 and the inner wall of the fixing groove 11 jointly clamp and fix the product 40. At this time, the top surface of the product 40 is parallel to the top surface of the base 10.

[0027] In this embodiment, the top surface of the support 20 is not higher than the top surface of the base 10, and the inclination of the outer side surface 22 of the support 20 is the same as the inclination of the inner wall surface of the fixing groove 11. The distance between the outer side surface 22 of the support 20 and the inner wall surface of the fixing groove 11 of the base 10 is designed according to the thickness of the product 40. When the product 40 is clamped and fixed in the inclined surface grinding fixture 100, the top surface of the product 40 is parallel to the top surface of the base 10, that is, the top surface of the product 40 to be ground is adjusted to a horizontal state; thus, the flat grinding process can be used for batch processing, with stable dimensions and obvious cost advantages.

[0028] Combination Figure 8As shown, the product 40 has a lower docking portion 41 and an upper processing portion 42. The docking portion 41 is fitted onto the positioning block 23, and the processing portion 42 protrudes upward from the top surface of the base 10. Specifically, when the product 40 is clamped between the support 20 and the base 10, the two sides of the docking portion 41 are respectively attached to the outer side surface 22 of the support 20 and the inner wall surface of the fixing groove 11, while the top surface of the processing portion 42 is parallel to the top surface of the base 10 to facilitate subsequent surface grinding. Furthermore, the product 40 also has a docking hole 411 penetrating the docking portion 41 and an abutment portion 412 extending upward from the bottom surface of the docking hole 411. The positioning block 23 passes through the docking hole 411 and partially abuts against the abutment portion 412, thereby limiting the product 40 to the support 20.

[0029] The base 10 has a recessed cavity 110 that is recessed downward from the bottom surface of the fixing groove 11. The elastic member 30 has a spring block 31 partially accommodated in the cavity 110 and a pressing block 32 located above the spring block 31. The pressing block 32 moves downward to push the spring block 31, and the spring block 31 in turn pushes the support 20 toward the inner wall surface of the fixing groove 11. Specifically, the spring block 31 has a bottom wall portion 311 accommodated in the cavity 110, spring arms 312 extending upward from both sides of the bottom wall portion 311, and a pressing portion 313 located at the end of the spring arm 312. The two spring arms 312 are located between the two supports 20, and the pressing block 32 is located between the two pressing portions 313.

[0030] The two pressing portions 313 of the spring block 31 protrude towards each other. The pressing block 32 is arranged in an inverted trapezoidal shape and has a pressing surface 321 corresponding to the pressing portion 313. When the pressing block 32 moves downward, the pressing surface 321 of the pressing block 32 drives the pressing portion 313 to push against the inner side surface 21 of the bearing seat 20, so as to cause the bearing seat 20 to move towards the inner wall surface of the fixing groove 11 to clamp and fix the product 40. Finally, a screw (not shown) passes through the pressing block 32 and the spring block 31 in sequence and is fixed to the bottom of the receiving cavity 110, thereby fixing the elastic element 30 and the bearing seat 20 to the base 10 to facilitate subsequent surface grinding.

[0031] In this invention, the support 20 has a vertically extending inner side 21, an outer side 22 inclined to the inner side 21, and a positioning block 23 protruding from the outer side 22 toward the inner wall of the fixing groove 11. The product 40 is fitted onto the positioning block 23. The elastic member 30 pushes against the inner side of the support 20 so that the outer side 22 of the support 20 and the inner wall of the fixing groove 11 together clamp and fix the product 40. At this time, the top surface of the product 40 is parallel to the top surface of the base 10. The distance between the outer side 22 of the support 20 and the inner wall of the fixing groove 11 of the base 10 is designed according to the thickness of the product 40. When the product 40 is clamped and fixed on the inclined surface grinding fixture 100, the top surface of the product 40 is parallel to the top surface of the base 10, that is, the top surface of the product 40 to be ground is adjusted to a horizontal state. Thus, the flat grinding process can be used for mass production, with stable dimensions and obvious cost advantages.

[0032] In summary, the above are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of the present utility model should still fall within the scope of the present utility model patent.

Claims

1. A bevel grinding fixture for clamping a product to be processed, the bevel grinding fixture comprising a base and bearings and an elastic element located on the base, the base having several fixing grooves recessed downwards from the top surface, each fixing groove accommodating one elastic element and two bearings, the two bearings being symmetrically arranged on both sides of the elastic element; characterized in that: The support has a vertically extending inner side, an outer side inclined to the inner side, and a positioning block protruding from the outer side toward the inner wall of the fixing groove. The product is sleeved on the positioning block, and the elastic element pushes against the inner side of the support so that the outer side of the support and the inner wall of the fixing groove jointly clamp and fix the product. At this time, the top surface of the product is parallel to the top surface of the base.

2. The inclined plane grinding fixture as described in claim 1, characterized in that: The inclination of the outer surface of the bearing is the same as the inclination of the inner wall of the fixing groove.

3. The inclined plane grinding fixture as described in claim 2, characterized in that: The top surface of the support is not higher than the top surface of the base. The product has a docking part at the bottom and a processing part at the top. The docking part is sleeved on the positioning block, and the processing part protrudes upward from the top surface of the base.

4. The inclined plane grinding fixture as described in claim 3, characterized in that: The product is clamped between the bearing and the base, with the two sides of the mating part respectively abutting against the outer side of the bearing and the inner wall of the fixing groove, while the top surface of the processing part is parallel to the top surface of the base.

5. The inclined plane grinding fixture as described in claim 3, characterized in that: The product is provided with a docking hole that penetrates the docking part and an abutting part that extends upward from the bottom surface of the docking hole. The positioning block is inserted into the docking hole and partially abuts against the abutting part.

6. The inclined plane grinding fixture as described in claim 1, characterized in that: The base is circular and has several protrusions extending upward from the plane containing the bottom surface of the fixing groove. The protrusions are evenly arranged circumferentially to form the fixing groove.

7. The inclined plane grinding fixture as described in claim 6, characterized in that: The base is provided with a limiting part that protrudes upward from the bottom surface of the fixing groove. The limiting part is located between two adjacent protruding parts, and the bearing abuts against the limiting part.

8. The inclined plane grinding fixture as described in claim 1, characterized in that: The base has a recessed cavity that extends downward from the bottom of the fixing groove. The elastic member has a spring block partially accommodated in the cavity and a pressing block located above the spring block. The pressing block moves downward to push against the spring block.

9. The inclined plane grinding fixture as described in claim 8, characterized in that: The spring block has a bottom wall portion accommodated in the accommodating cavity, spring arms extending upward from both sides of the bottom wall portion, and a pressing portion located at the end of the spring arms. The two spring arms are located between the two bearings, and the pressing block is located between the two pressing portions.

10. The inclined plane grinding fixture as described in claim 9, characterized in that: The two pressing parts of the spring block protrude towards each other, and the pressing block is arranged in an inverted trapezoidal shape and has a pressing surface corresponding to the pressing part; when the pressing block moves downward, the pressing surface of the pressing block drives the pressing part to push against the inner side of the bearing, so as to cause the bearing to move toward the inner wall of the fixing groove to clamp and fix the product.

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