Spliced and combined sintered diamond roller

Abstract

The utility model discloses a spliced and combined sintered diamond roller, and belongs to the technical field of diamond rollers. A spliced combined sintered diamond roller comprises a shaft sleeve, a first roller body, a second roller body and a third roller body are coaxially arranged on the outer side of the shaft sleeve, the first roller body and the shaft sleeve are integrally formed, and the second roller body and the third roller body are fixedly arranged at the positions, at the two ends of the first roller body, of the shaft sleeve in a sleeving mode respectively. A first groove is defined between the first wheel body and the second wheel body, a second groove is defined between the first wheel body and the third wheel body, and diamond layers are arranged on the inner surface of the first groove and the inner surface of the second groove. The utility model has the advantages of low mould manufacturing cost and convenience in trimming the diamond layer.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond wheels, in particular to a spliced and combined sintered diamond wheel. Background Art

[0002] A diamond wheel is a new generation of grinding wheel dressing tool. By installing the diamond wheel on the dressing device of a grinding machine to dress a common ceramic grinding wheel or a CBN grinding wheel, and then grinding parts after the grinding wheel is formed, the contour, accuracy and size of the diamond wheel are copied to the surface of the machined parts through the grinding wheel, and the surface quality and accuracy of the machined parts are higher, which is especially suitable for high-precision and mass production.

[0003] At present, there are three types of diamond wheels, namely: sintered diamond wheels, electroplated diamond wheels and CVD diamond wheels. Each type of diamond wheel has its own advantages and disadvantages, and the application industries are also different. Sintering method: divided into two types, hand-implanted sintered wheels and randomly distributed sintered wheels, with strong durability; electroplating method; high-precision manufacturing of small and complex-shaped wheels; CVD wheels: new materials, with good dressing effect on CBN grinding wheels.

[0004] A diamond wheel is divided into a matrix, a transition layer and a diamond layer from the inside to the outside. The matrix is the main body of the wheel, and the transition layer is mainly some metal powders used to fix the diamond on the surface of the matrix. The diamond layer is also called the working layer.

[0005] In the prior art, the production of the wheel matrix mainly uses die casting technology. As the functions of diamond wheels are increasing, their structures and shapes are becoming more and more complex, and two problems arise accordingly: First, the structure of the matrix of the diamond wheel is also more complex. If the original one-piece forming die is used for casting, the cost of the die itself for casting will increase sharply; Second, after the diamond wheel is produced, it also needs to be trimmed (the working layer of the diamond wheel is trimmed for accuracy, and the product leaves the factory after the working layer accuracy is qualified. Finally, the diamond wheel is used to trim the grinding wheel). However, the groove width on the surface of the complex diamond wheel is relatively narrow, and the existing trimming tools are not easy to extend into the groove for trimming. In view of this, the present application proposes a spliced and combined sintered diamond wheel. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problems of high die cost and great difficulty in precision trimming during the production of existing complex diamond wheels, and to propose a spliced and combined sintered diamond wheel.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A spliced and combined sintered diamond roller, comprising a bushing. A first wheel body, a second wheel body and a third wheel body are coaxially arranged on the outer side of the bushing. The first wheel body is integrally formed with the bushing. The second wheel body and the third wheel body are respectively fixedly sleeved on the positions at both ends of the first wheel body on the bushing. A first groove is formed between the first wheel body and the second wheel body, and a second groove is formed between the first wheel body and the third wheel body. A diamond layer is arranged on the inner surfaces of the first groove and the second groove.

[0009] Further, the first wheel body includes a first annular convex tooth, a first side wall and a first annular surface. The two end surfaces of the first annular convex tooth are the first side walls. The second wheel body includes a second annular convex tooth. The side end surface of the second annular convex tooth close to the first annular convex tooth is the second side wall. The first groove is formed by enclosing between the first side wall, the first annular surface and the second side wall.

[0010] Further, a second annular surface is arranged at one end of the second annular convex tooth far from the first annular convex tooth. A first step is formed between the side end surface of the second annular convex tooth far from the first annular convex tooth and the second annular surface.

[0011] Further, the third wheel body includes a third annular convex tooth. The end surface of the third annular convex tooth close to the first annular convex tooth is the third side wall. The second groove is formed by enclosing between the other first side wall, the first annular surface and the third side wall.

[0012] Further, a third annular surface is arranged at one end of the third annular convex tooth far from the first annular convex tooth. A second step is formed between the side end surface of the third annular convex tooth far from the first annular convex tooth and the third annular surface.

[0013] Further, the third annular surface is of a frustum-shaped structure.

[0014] Further, a third step is arranged at one end of the third annular surface far from the third annular convex tooth.

[0015] Further, an assembly through hole is arranged on the first wheel body, and the assembly through hole penetrates through the second wheel body and the third wheel body.

[0016] Compared with the prior art, the utility model provides a spliced and combined sintered diamond roller, which has the following beneficial effects:

[0017] The utility model relates to a spliced and combined sintered diamond roller. During production, a first wheel body, a second wheel body, and a third wheel body are respectively cast and formed using a mold. Then, a diamond layer is sintered and fixed on the inner surfaces forming a first groove and a second groove. After that, a finishing tool is used to finish the diamond layer. After finishing, the second wheel body and the third wheel body are fixedly sleeved on a bushing to form a complete diamond roller. Compared with the prior art, separately casting the first wheel body, the second wheel body, and the third wheel body reduces the complexity of the casting mold. When finishing, the inner surfaces of the first groove and the second groove are respectively finished, increasing the finishing operation space, thereby reducing the casting cost of the diamond wheel and reducing the finishing difficulty.

[0018] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description; and to some extent, based on the study of the following text, it will be obvious to those skilled in the art; or, it can be taught from the practice of the present utility model. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the upper right perspective of the overall structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the upper left perspective of the overall structure of the present utility model;

[0021] Figure 3 It is a schematic diagram of the front view direction of the overall structure of the present utility model;

[0022] Figure 4 It is a schematic diagram of the upper right perspective of the exploded effect of the overall structure of the present utility model;

[0023] Figure 5 It is a schematic diagram of the upper left perspective of the exploded effect of the overall structure of the present utility model;

[0024] Figure 6 It is a schematic diagram of the front view direction of the exploded effect of the overall structure of the present utility model;

[0025] Figure 7 It is a schematic diagram of the cross-section of the front view direction of the overall structure of the present utility model.

[0026] In the figure:

[0027] 1. First wheel body; 101. First annular convex teeth; 102. First side wall; 103. First annular surface; 2. Second wheel body; 201. Second side wall; 202. Second annular convex teeth; 203. Second annular surface; 3. Third wheel body; 301. Third side wall; 302. Third annular convex teeth; 303. Third annular surface; 304. Third step; 4. Assembly groove; 5. Assembly through hole; 6. Positioning ring; 7. Bushing; 8. First through groove; 9. Second through groove. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Refer to Figures 1-7 , a spliced and combined sintered diamond roller of the present invention includes a bushing 7. It is characterized in that a first wheel body 1, a second wheel body 2, and a third wheel body 3 are coaxially arranged outside the bushing 7. The first wheel body 1 is integrally formed with the bushing 7. The second wheel body 2 and the third wheel body 3 are respectively fixedly sleeved on the positions at both ends of the first wheel body 1 on the bushing 7. A first groove is formed between the first wheel body 1 and the second wheel body 2, and a second groove is formed between the first wheel body 1 and the third wheel body 3. Diamond layers are provided on the inner surfaces of the first groove and the second groove.

[0030] A first through groove 8 is opened in the middle of the bushing 7. A key groove is opened on the side wall of the first through groove 8, and a key is installed in the key groove. The bushing 7 is keyed to the rotating shaft, and this diamond roller is installed on the rotating shaft through the first through groove 8.

[0031] Second through grooves 9 are opened in the middle of the second wheel body 2 and the third wheel body 3. The inner diameter size of the second through grooves 9 is the same as the outer diameter size of the bushing 7. During splicing, the second wheel body 2 and the third wheel body 3 are sleeved on the bushing 7 through the second through grooves 9.

[0032] The cross sections of the first wheel body 1, the second wheel body 2, and the third wheel body 3 can be rectangular (as shown in Figure 7 ), trapezoidal, or other shapes, forming a diamond roller with a special-shaped structure or a complex structure that matches the shape of the grinding wheel to be dressed.

[0033] The heights of the first wheel body 1, the second wheel body 2, and the third wheel body 3 can be the same or different, and the widths and depths of the first groove and the second groove can also be the same or different, so as to meet the dressing operations of grinding wheels of different models.

[0034] During production, the first wheel body 1, the second wheel body 2, and the third wheel body 3 are cast separately. After casting, they are processed to meet the surface accuracy requirements through processes such as turning and grinding. Then, diamond layers are sintered and fixed on the surfaces of the first wheel body 1, the second wheel body 2, and the third wheel body 3 to form the working layer. Then, the working layers are respectively precision dressed. After the dressing is completed, they are spliced and assembled together to form a complete diamond roller.

[0035] The first wheel body 1 includes a first annular convex tooth 101, a first side wall 102 and a first annular surface 103. The two end faces of the first annular convex tooth 101 are the first side walls 102. The second wheel body 2 includes a second annular convex tooth 202. The side end face of the second annular convex tooth 202 close to the first annular convex tooth 101 is the second side wall 201. A first groove is formed among the first side wall 102, the first annular surface 103 and the second side wall 201.

[0036] The first groove is a U-shaped groove with an open top. A diamond layer is sintered and fixed on the end face of the first side wall 102, the first annular surface 103 and the second side wall 201 on the inner surface of the first groove to form a working layer.

[0037] One end of the second annular convex tooth 202 far from the first annular convex tooth 101 is provided with a second annular surface 203. A first step is formed between the side end face of the second annular convex tooth 202 far from the first annular convex tooth 101 and the second annular surface 203.

[0038] A diamond layer is also sintered and fixed on the surface of the first step as a working layer for dressing the grinding wheel.

[0039] The third wheel body 3 includes a third annular convex tooth 302. The end face of the third annular convex tooth 302 close to the first annular convex tooth 101 is the third side wall 301. A second groove is formed among the first side wall 102, the first annular surface 103 on the other side and the third side wall 301.

[0040] The second groove is a U-shaped groove with an open top. A diamond layer is also sintered and fixed on the end face of the first annular convex tooth 101, the first annular surface 103 and the third side wall 301 on the inner surface of the second groove to form a working layer.

[0041] One end of the third annular convex tooth 302 far from the first annular convex tooth 101 is provided with a third annular surface 303. A second step is formed between the side end face of the third annular convex tooth 302 far from the first annular convex tooth 101 and the third annular surface 303.

[0042] A diamond layer is also sintered and fixed on the surface of the second step as a working layer for dressing the grinding wheel.

[0043] The third annular surface 303 is a frustum-shaped structure.

[0044] Specifically, as Figure 7 shown, the radial dimension of the third annular surface 303 at the end far from the first wheel body 1 is smaller than the radial dimension at the end close to the first wheel body 1, so that the working layer on the second step can be used to dress a grinding wheel with a chamfer at the edge.

[0045] One end of the third annular surface 303 far from the third annular convex tooth 302 is provided with a third step 304.

[0046] The surface of the third step 304 is also sintered and fixed with a diamond layer to form a working layer for dressing grinding wheels with a smaller thickness.

[0047] An assembly through-hole 5 is provided on the first wheel body 1, and the assembly through-hole 5 penetrates through the second wheel body 2 and the third wheel body 3.

[0048] Specifically, the axis of the assembly through-hole 5 is parallel to the axis of the first through-groove 8. The assembly through-hole 5 passes through the structural part between the first annular surface 103 and the circumferential wall surface of the bushing 7. When splicing and combining, bolts can be inserted into the assembly through-hole 5 to fix the second wheel body 2 and the third wheel body 3.

[0049] And a positioning ring 6 is welded to one end of the first annular surface 103 away from the first annular convex tooth 101. The outer diameter dimension of the positioning ring 6 is the same as the radial dimension of the first annular surface 103. Assembly grooves 4 with the same outer diameter dimension and axial dimension as the positioning ring 6 are provided on both the second side wall 201 and the third side wall 301. After the second wheel body 2 and the third wheel body 3 are sleeved on the bushing 7, the assembly grooves 4 are synchronously sleeved on the positioning ring 6.

[0050] The positioning ring 6 is made of wear-resistant steel with high strength, and the inner surface of the assembly groove 4 is also subjected to surface modification treatment to meet the surface strength requirements, thereby reducing the wear between the assembly groove 4 and the positioning ring 6.

[0051] The first annular surface 103 is an annular surface located between the positioning ring 6 and the first annular convex tooth 101.

[0052] Diamond layers can also be sintered and fixed on the circumferential surfaces of the first side wall 102, the second side wall 201, and the third side wall 301 to form working layers for dressing the circumferential wall surface of the grinding wheel.

[0053] Working principle: During production, the first wheel body 1, the second wheel body 2, and the third wheel body 3 are respectively cast and formed using a mold, and then turned and ground to qualified dimensions. Diamond layers are sintered and fixed on the circumferential surface of the first annular convex tooth 101, the first side wall 102, the first annular surface 103, the second side wall 201, the circumferential surface of the second annular convex tooth 202, the second annular surface 203, the third side wall 301, the circumferential surface of the third annular convex tooth 302, the third annular surface 303, and the surface of the third step 304. Then, a dressing tool is used to dress the diamond layer to form different working layers. After the dressing is completed, the second wheel body 2 and the third wheel body 3 are fixedly sleeved on the bushing to form a complete diamond roller, which is convenient for producing diamond rollers with complex structures.

[0054] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

[0055] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A spliced ​​combined sintered diamond roller, comprising a sleeve (7), characterized in that: A first wheel body (1), a second wheel body (2), and a third wheel body (3) are coaxially arranged on the outer side of the shaft sleeve (7); the first wheel body (1) and the shaft sleeve (7) are integrally formed; the second wheel body (2) and the third wheel body (3) are respectively fixedly sleeved on the shaft sleeve (7) at two ends of the first wheel body (1); a first groove is formed between the first wheel body (1) and the second wheel body (2); a second groove is formed between the first wheel body (1) and the third wheel body (3); and diamond layers are arranged on the inner surfaces of the first groove and the second groove.

2. The spliced ​​combined sintered diamond roller according to claim 1, characterized in that: The first wheel body (1) comprises a first annular protruding tooth (101), a first side wall (102) and a first annular surface (103); both end surfaces of the first annular protruding tooth (101) are the first side walls (102); the second wheel body (2) comprises a second annular protruding tooth (202); the side end surface of the second annular protruding tooth (202) close to the first annular protruding tooth (101) is the second side wall (201); and the first side wall (102), the first annular surface (103) and the second side wall (201) form a first groove.

3. The spliced ​​combined sintered diamond roller according to claim 2, characterized in that: A second annular surface (203) is provided at one end of the second annular convex tooth (202) away from the first annular convex tooth (101), and a first step is formed between the side end surface of the second annular convex tooth (202) away from the first annular convex tooth (101) and the second annular surface (203).

4. The spliced ​​combined sintered diamond roller according to claim 2, characterized in that: The third wheel body (3) comprises a third annular protruding tooth (302); the end surface of the third annular protruding tooth (302) close to the first annular protruding tooth (101) is a third side wall (301); and the first side wall (102), the first annular surface (103) and the third side wall (301) on the other side form a second groove.

5. The spliced ​​combined sintered diamond roller according to claim 4, characterized in that: A third annular surface (303) is provided at one end of the third annular convex tooth (302) away from the first annular convex tooth (101), and a second step is formed between the side end surface of the third annular convex tooth (302) away from the first annular convex tooth (101) and the third annular surface (303).

6. The spliced ​​combined sintered diamond roller according to claim 5, characterized in that: The third annular surface (303) is a truncated cone structure.

7. The spliced ​​combined sintered diamond roller according to claim 5, characterized in that: A third step (304) is provided at one end of the third annular surface (303) away from the third annular protruding tooth (302).

8. The spliced ​​combined sintered diamond roller according to claim 1, characterized in that: The first wheel body (1) is provided with an assembly through hole (5), and the assembly through hole (5) passes through the second wheel body (2) and the third wheel body (3).

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