Brazed diamond arc-shaped polishing sheet

Abstract

The utility model discloses a kind of brazed diamond arc-shaped polishing pieces, it is related to arc-shaped polishing piece technical field, including main base body, the side of main base body is surrounded and is provided with a plurality of segmented elastic base body, each segmented elastic base body is evenly provided with elastic hinge, each segmented elastic base body is connected by elastic hinge, the main base body and each segmented elastic base body are arc-shaped as a whole, the outer surface of each segmented elastic base body is fixedly connected with diamond abrasive layer by high-temperature brazing process. The utility model is through the flexible structure of segmented elastic base body and elastic hinge, completely solve the pain point that traditional rigid polishing piece curved surface is poorly fitted, and it is easy to produce vibration mark, segmented elastic base body can be independently fine-tuned under the action of elastic hinge, and the fitting degree of continuous special-shaped curved surface, such as casting, weld, etc. Compared with traditional polishing piece is improved.

Description

Technical Field

[0001] This utility model relates to the field of arc-shaped grinding disc technology, specifically to a brazed diamond arc-shaped grinding disc. Background Technology

[0002] Diamond arc-shaped grinding discs are specialized grinding tools that use diamond abrasive as the core cutting / medium and have an overall or working surface structure of "arc-shaped curved surface". Relying on the advantages of diamond's ultra-high hardness and wear resistance, they are widely used in stone processing, metal casting, ceramic sanitary ware, composite material molding and other fields.

[0003] Currently, curved grinding discs face many problems when dealing with continuous irregular curved surfaces such as castings and welds. Traditional flat corundum grinding discs do not fit the curvature well, requiring frequent replacement or manual grinding. Rigid contact generates vibration marks and overcutting, and instantly raises a large amount of dust. The abrasive grains have weak holding force, are easy to fall off in whole pieces, have short lifespans, high replacement frequency, and high downtime costs. High-temperature sintering or electroplating processes result in poor abrasive grain encapsulation, thick substrates, high energy consumption, and significant dust pollution. Utility Model Content

[0004] In view of the problems existing in the current arc-shaped grinding discs, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a brazed diamond arc-shaped grinding disc, which solves the problems of traditional flat corundum grinding discs not fitting properly, requiring frequent replacement or manual re-grinding, rigid contact causing vibration marks and overcutting, and instantly raising a large amount of dust.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A brazed diamond arc-shaped grinding disc includes a main body, with multiple segmented elastic substrates arranged around the side of the main body. Each segmented elastic substrate is connected to another by an elastic hinge. The main body and each segmented elastic substrate are arc-shaped as a whole. The outer surface of each segmented elastic substrate is fixedly connected with a diamond abrasive layer by a high-temperature brazing process. The lower surface of each segmented elastic substrate is fixedly connected with a back damping adhesive layer.

[0008] Preferably, the main body and each segmented elastic body are made of spring steel, and each elastic hinge is made of high-elasticity stainless steel.

[0009] Preferably, the brazing temperature of the high-temperature brazing process is 850-950℃, and copper-based brazing filler metal is used to connect the diamond abrasive layer to each segmented elastic matrix.

[0010] Preferably, the diamond abrasive layer uses diamond abrasive grains with a particle size of 30-80 mesh, and the abrasive grains are evenly distributed in a matrix on the working surface of the metal substrate, with a center-to-center distance of 2-5 mm between adjacent abrasive grains.

[0011] Preferably, the back damping adhesive layer is made of polyurethane damping adhesive.

[0012] Preferably, the upper and lower surfaces of the main body are provided with mounting grooves, and a mounting hole is provided between the two mounting grooves.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model completely solves the problems of poor surface fit and easy vibration marks of traditional rigid grinding discs by using a flexible structure of segmented elastic matrix and elastic hinge. The segmented elastic matrix can be independently fine-tuned under the action of elastic hinge, and the fit with continuous irregular curved surfaces such as castings and welds is improved compared with traditional grinding discs.

[0015] 2. This utility model uses a high-temperature brazing process of 850-950℃ to form a metallurgical bond between the diamond abrasive layer and the substrate. Compared with traditional electroplating and sintering processes, the abrasive holding force is improved and the abrasive shedding rate is reduced, thereby extending the service life of a single grinding disc. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 For the present utility model Figure 1 Side sectional view;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of part A.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Main substrate; 2. Segmented elastic substrate; 3. Elastic hinge; 4. Diamond abrasive layer; 5. Back damping adhesive layer. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a brazed diamond arc-shaped grinding disc.

[0024] This utility model provides, for example Figure 1-3 The brazed diamond arc-shaped grinding disc shown includes a main substrate 1, with multiple segmented elastic substrates 2 arranged around the side of the main substrate 1. Each segmented elastic substrate 2 is connected by an elastic hinge 3. The main substrate 1 and each segmented elastic substrate 2 are arc-shaped as a whole. The outer surface of each segmented elastic substrate 2 is fixedly connected with a diamond abrasive layer 4 by a high-temperature brazing process. The lower surface of each segmented elastic substrate 2 is fixedly connected with a back damping adhesive layer 5.

[0025] Multiple segmented elastic substrates 2 surrounding the main substrate 1 are interconnected by elastic hinges 3, forming an overall arc-shaped structure. When grinding irregular curved surfaces, each segmented elastic substrate 2 can independently undergo slight deformation under the action of the elastic hinges 3, conforming to the local contour of the curved surface. This ensures that the diamond abrasive layer 4 is in close contact with the curved surface throughout the process, significantly improving the contact rate compared to traditional rigid grinding discs.

[0026] like Figure 1-3 As shown, the main body 1 and each segmented elastic body 2 are made of spring steel, and each of the elastic hinges 3 is made of high-elasticity stainless steel.

[0027] The high elasticity of stainless steel gives the elastic hinge 3 excellent elastic recovery performance. After dynamic deformation with the curved surface during the grinding process, it can quickly return to its original position, avoiding permanent deformation of the base material.

[0028] like Figure 1-3 As shown, the brazing temperature of the high-temperature brazing process is 850-950℃. Copper-based brazing filler metal is used to connect the diamond abrasive layer 4 to each segmented elastic substrate 2. The diamond abrasive layer 4 uses diamond abrasive grains with a particle size of 30-80 mesh. The abrasive grains are evenly distributed in a matrix on the working surface of the metal substrate, and the center-to-center distance between adjacent abrasive grains is 2-5mm.

[0029] The diamond abrasive layer 4 is fixedly connected to the segmented elastic substrate 2 by a high-temperature brazing process of 850-950℃ using copper-based brazing filler metal. During the brazing process, the copper-based brazing filler metal melts and wets the diamond abrasive and substrate surfaces. After cooling, a metallurgical bonding layer is formed, which firmly fixes the abrasive to the substrate. Compared with traditional electroplating and sintering processes, the abrasive holding force is improved, avoiding the abrasive from falling off in one piece during grinding and reducing the abrasive wear rate.

[0030] like Figure 2-3 As shown, the back damping adhesive layer 5 is made of polyurethane damping adhesive.

[0031] The back damping adhesive layer 5 provides radial flexibility to the grinding disc when it comes into contact with irregular surfaces, reducing the risk of vibration marks and overcutting.

[0032] like Figure 1-2 As shown, mounting grooves are provided on both the upper and lower surfaces of the main body 1, and mounting holes are provided between the two mounting grooves.

[0033] The grinding disc is fixed to the output shaft of the grinder through the mounting holes and mounting slots of the main body 1. The fixing bolts are tightened to ensure a rigid connection between the grinding disc and the output shaft.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A brazed diamond arc-shaped grinding disc, comprising a main substrate (1), characterized in that, The main substrate (1) is surrounded by multiple segmented elastic substrates (2), and each segmented elastic substrate (2) is provided with an elastic hinge (3). Each segmented elastic substrate (2) is connected to the other by an elastic hinge. The main substrate (1) and each segmented elastic substrate (2) are arc-shaped as a whole. The outer surface of each segmented elastic substrate (2) is fixedly connected with a diamond abrasive layer (4) by a high-temperature brazing process. The lower surface of each segmented elastic substrate (2) is fixedly connected with a back damping adhesive layer (5).

2. The brazed diamond arc-shaped grinding disc according to claim 1, characterized in that, The main body (1) and each segmented elastic body (2) are made of spring steel, and each of the elastic hinges (3) is made of high-elasticity stainless steel.

3. The brazed diamond arc-shaped grinding disc according to claim 1, characterized in that, The brazing temperature of the high-temperature brazing process is 850-950℃, and copper-based brazing filler metal is used to connect the diamond abrasive layer (4) to each segmented elastic matrix (2).

4. The brazed diamond arc-shaped grinding disc according to claim 1, characterized in that, The diamond abrasive layer (4) uses diamond abrasive grains with a particle size of 30-80 mesh. The abrasive grains are evenly arranged in a matrix on the working surface of the metal substrate, and the center-to-center distance between adjacent abrasive grains is 2-5 mm.

5. The brazed diamond arc-shaped grinding disc according to claim 1, characterized in that, The back damping adhesive layer (5) is made of polyurethane damping adhesive.

6. The brazed diamond arc-shaped grinding disc according to claim 1, characterized in that, The main body (1) has mounting grooves on both the upper and lower surfaces, and mounting holes are formed between the two mounting grooves.

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