Brazing diamond grinding wheel with salient points

Abstract

The utility model relates to the technical field of diamond grinding wheels, in particular to a brazed diamond grinding wheel with salient points. The brazing diamond grinding wheel with the protruding points comprises a grinding wheel base body, the grinding wheel base body comprises a circular truncated cone part and a circular ring part which are connected, and the circular ring part and the circular truncated cone part are coaxially arranged. The working face of the circular ring part is provided with a plurality of grinding wheel bosses protruding in the direction away from the circular truncated cone part and chip discharging grooves used for discharging grinding chips. Diamond abrasive particles are brazed on the grinding face of the grinding wheel boss. The chip groove in the brazed diamond grinding wheel can play a role in containing and discharging chips, so that dust generated during grinding is reduced, the grinding efficiency can be improved, and the problem that the sharpness of the grinding wheel is affected by grinding chips, so that a knife is burnt, and the grinding wheel is out of work too early is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond grinding wheels, in particular to a brazed diamond grinding wheel with convex points. Background Art

[0002] Diamond abrasive tools are widely used in the processing of hard and brittle materials such as ceramics and stone due to their high hardness and excellent physical and mechanical properties. Existing diamond grinding wheels can generally be divided into sintered, electroplated and brazed diamond grinding wheels according to the manufacturing method and process. The first type of sintered diamond grinding wheel is made by sintering diamond and matrix powder through a powder metallurgy process. Specifically, the sintered diamond grinding wheel includes a grinding wheel base and a cutter head. A plurality of cutter heads are evenly distributed on the grinding wheel base around the axis of the grinding wheel base, and a chip groove is formed between two adjacent cutter heads. However, due to the high interface energy between diamond and metal binder, diamond is only mechanically embedded in the metal matrix, so the metal matrix has a very weak holding force on diamond. The exposed height of the abrasive particles is low and the chip holding space is small. During the grinding process, it is easy for the chips to adhere and clog, affecting the processing efficiency of the tool.

[0003] The second type of electroplated diamond tools is a diamond tool made by fixing the diamond on the substrate by depositing the electroplating layer to achieve the purpose of consolidation. Since the diamond is mechanically embedded, the bonding force between the diamond and the plating is weak. In order to increase the holding force, the thickness of the plating must be increased to more than 1 / 2 of the height of the diamond itself, which leads to a decrease in the exposed height of the abrasive particles, a reduction in the chip space, and easy clogging of the grinding wheel, affecting the processing efficiency of the tool. In heavy-load processing, the diamond is prone to fall off prematurely due to insufficient holding force, resulting in overall failure of the tool.

[0004] The third type of brazed diamond grinding wheel is to braze the diamond to the grinding wheel base with active brazing filler metal, so that the diamond, brazing filler metal alloy and the grinding wheel base are chemically metallurgically bonded. Therefore, the brazed diamond tool has high bonding strength and the diamond is not easy to fall off from the grinding wheel base.

[0005] However, during the processing of the existing brazed diamond grinding wheel, the grinding surface of the grinding wheel mechanism will be in contact with the object to be polished, which makes it difficult to discharge the generated grinding chips. The grinding chips are easily blocked in the gaps between the diamonds on the grinding surface of the grinding wheel base, resulting in a decrease in grinding efficiency. In severe cases, the sharpness of the grinding wheel will be affected, resulting in burnt blades, causing the grinding wheel to fail prematurely. Utility Model Content

[0006] (I) The problem to be solved by the utility model is that the grinding chips generated by the existing brazed diamond grinding wheel during the processing are difficult to discharge and are easily blocked in the gaps between the diamonds on the grinding surface of the grinding wheel base, resulting in a decrease in grinding efficiency. In severe cases, the sharpness of the grinding wheel will be affected, resulting in burnt blades, causing the grinding wheel to fail prematurely.

[0007] (II) Technical solution

[0008] A brazed diamond grinding wheel with convex points comprises a grinding wheel base, wherein the grinding wheel base comprises a truncated cone portion and an annular portion connected to each other, wherein the annular portion is coaxially arranged with the truncated cone portion;

[0009] The working surface of the annular portion is provided with a plurality of grinding wheel bosses protruding away from the truncated cone portion and a chip discharge groove for discharging grinding chips;

[0010] Diamond abrasive grains are brazed on the grinding surface of the grinding wheel boss.

[0011] According to an embodiment of the utility model, according to the brazed diamond grinding wheel with protrusions described in the claim, the chip removal groove is formed between two adjacent grinding wheel bosses.

[0012] According to an embodiment of the present invention, the grinding wheel bosses are regular in shape, and the chip removal grooves are formed between the regular grinding wheel bosses.

[0013] According to an embodiment of the present utility model, the grinding wheel boss is irregular in shape, and the chip removal groove is formed between the irregular grinding wheel bosses.

[0014] According to an embodiment of the utility model, the grinding wheel boss includes a regular grinding wheel boss and an irregular grinding wheel boss.

[0015] According to an embodiment of the utility model, the cross-section of the grinding wheel boss is fan-shaped, a plurality of fan-shaped grinding wheel bosses are evenly distributed around the axis of the grinding wheel base, and the axis of the fan-shaped grinding wheel bosses is colinear with the axis of the annular portion.

[0016] According to one embodiment of the utility model, the grinding wheel boss includes a first grinding wheel boss and a second grinding wheel boss, the first grinding wheel boss is in the shape of an arc plate, and the second grinding wheel boss is in the shape of a cylinder; the first grinding wheel boss and the second grinding wheel boss are alternately arranged in sequence around the axis of the grinding wheel base, and the chip removal groove is formed between the second grinding wheel boss and the two adjacent first grinding wheel bosses.

[0017] According to one embodiment of the utility model, the width of the first grinding wheel boss gradually increases from the inner edge of the annular portion to its outer edge, the first grinding wheel boss has a first side surface and a second side surface opposite to each other, the curvature of the first side surface is greater than the curvature of the second side surface, and the second grinding wheel boss is located between the first side surface of a first grinding wheel boss adjacent to it and the second side surface of another first grinding wheel boss.

[0018] According to one embodiment of the utility model, the grinding wheel boss includes a third grinding wheel boss and a fourth grinding wheel boss, and the cross-sections of the third grinding wheel boss and the fourth grinding wheel boss are both fan-shaped; a plurality of the third grinding wheel bosses are evenly arranged on the outer edge of the annular portion around the axis of the grinding wheel base, and a plurality of the fourth grinding wheel bosses are evenly arranged on the inner edge of the annular portion around the axis of the grinding wheel base, and the axes of the third grinding wheel bosses, the fourth grinding wheel bosses and the annular portion are collinear.

[0019] According to an embodiment of the present invention, a plurality of weight-reducing holes are provided on the side wall of the truncated cone portion of the grinding wheel base, and the plurality of weight-reducing holes are evenly arranged around the axis of the grinding wheel base.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a brazed diamond grinding wheel with convex points, comprising a grinding wheel base body, wherein the grinding wheel base body comprises a truncated cone part and an annular part connected to each other, wherein the annular part and the truncated cone part are coaxially arranged; a plurality of grinding wheel bosses protruding in a direction away from the truncated cone part and a chip discharge groove for discharging grinding chips are arranged on the working surface of the annular part; diamond abrasive grains are brazed on the grinding surface of the grinding wheel bosses.

[0022] Because chip grooves are formed between the grinding wheel bosses, and the chip grooves can hold and remove chips, they can reduce the dust generated during grinding, improve grinding efficiency, and avoid the problem of grinding chips affecting the sharpness of the grinding wheel and causing the tool to burn, resulting in premature failure of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A side view provided for the first embodiment of the utility model;

[0025] Figure 2 A front view of the first embodiment of the present utility model;

[0026] Figure 3 A front view of the second embodiment of the present utility model;

[0027] Figure 4 This is a front view of the third embodiment of the present invention.

[0028] Icons: 1. Mounting end; 2. Grinding wheel base; 3. Grinding wheel boss; 4. Diamond abrasive grains; 5. Chip groove; 6. Weight reduction hole. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0030] Embodiment 1:

[0031] like Figure 1 and Figure 2 As shown, embodiment 1 of the utility model provides a brazed diamond grinding wheel with protrusions, including a grinding wheel base 2, the grinding wheel base 2 includes a truncated cone portion and an annular portion connected to each other, the annular portion and the truncated cone portion are coaxially arranged; a plurality of grinding wheel bosses 3 protruding away from the truncated cone portion and a chip discharge groove 5 for discharging grinding chips are provided on the working surface of the annular portion; diamond abrasive grains 4 are brazed on the grinding surface of the grinding wheel boss 3.

[0032] In this embodiment, compared with the traditional brazed diamond grinding wheel, the advantages are:

[0033] Diamond is no longer brazed to the grinding surface of the grinding wheel base 2, but a grinding wheel boss 3 is arranged on the grinding surface of the grinding wheel base 2 (i.e., the working surface of the annular part), and then diamond abrasive grains 4 are brazed on the grinding surface of the grinding wheel boss 3. The advantage of this is that chip grooves 5 are formed between the grinding wheel bosses 3, and the chip grooves 5 can play the role of accommodating and removing chips, thereby reducing dust generated during grinding, and also improving grinding efficiency, avoiding the problem of grinding chips affecting the sharpness of the grinding wheel and then causing the knife to burn, resulting in premature failure of the grinding wheel.

[0034] Furthermore, by providing a plurality of grinding wheel bosses 3, the grinding edges can be increased, making the grinding sharper.

[0035] As a preferred embodiment, Figure 2 As shown, the grinding wheel boss 3 is evenly arranged around the axis of the circular ring portion, and a chip groove 5 is formed between two adjacent grinding wheel bosses 3. The cross-section of the grinding wheel boss 3 is fan-shaped, and the axis of the fan-shaped grinding wheel boss 3 is colinear with the axis of the circular ring portion. The grinding surface of the fan-shaped grinding wheel boss 3 is covered with diamond abrasive grains 4 by brazing.

[0036] In this way, when the brazed diamond grinding wheel is grinding the object to be processed, the diamond abrasive grains 4 on the grinding surface of the grinding wheel boss 3 play a grinding role, and a large amount of grinding chips will be generated during the grinding. As the brazed diamond grinding wheel rotates at a high speed, the grinding chips are thrown into the chip discharge groove 5 and discharged. In this way, the blockage between the diamond abrasive grains 4 on the grinding surface of the grinding wheel boss 3 will be greatly alleviated, thereby improving the grinding efficiency and extending the service life of the brazed diamond grinding wheel.

[0037] Optionally, a plurality of weight-reducing holes 6 are provided on the side wall of the truncated cone portion of the grinding wheel base 2, and the plurality of weight-reducing holes 6 are evenly arranged around the axis of the grinding wheel base 2 to reduce the weight of the brazed diamond grinding wheel.

[0038] like Figure 1 As shown, the left side of the grinding wheel base 2 is the mounting end 1, and a mounting hole is provided at the center of the truncated cone portion of the grinding wheel base 2. The truncated cone portion is truncated cone-shaped in shape as a whole, and has a truncated cone-shaped cavity inside. That is, the inner diameter of the truncated cone portion gradually increases from the left side to the right side of the truncated cone portion, and the annular portion is coaxially mounted on the right side of the truncated cone portion.

[0039] Preferably, in this embodiment, the thickness T3 of the grinding wheel boss 3 is 4 mm, the number of the grinding wheel bosses 3 is 6, the diameter of the grinding wheel is 180 mm, and the thickness T2 of the grinding wheel base 2 is 4 mm.

[0040] Preferably, the particle size of the diamond abrasive grains 4 on the grinding surface of the grinding wheel boss 3 is 212 μm-250 μm.

[0041] It should be noted that, in this embodiment, the grinding wheel base 2 and the grinding wheel boss 3 are integrally formed, and the grinding wheel boss does not need to be separately sintered or welded to the grinding wheel base 2, thereby reducing production costs.

[0042] It should be noted that the brazing material used for brazing the diamond abrasive grains 4 to the grinding surface of the grinding wheel boss 3 is a nickel-based brazing material, which contains nickel, chromium, iron, and silicon; the percentage of the content is: nickel 84% to 85%, chromium 4% to 5%, iron 6.5% to 7.5%, silicon 4% to 5%. The brazing temperature during brazing in a vacuum furnace is 1020° C., and the temperature is kept for 20 minutes.

[0043] Embodiment 2:

[0044] like Figure 3 As shown, the second embodiment of the present invention provides a brazed diamond grinding wheel with protrusions. The difference between the second embodiment and the first embodiment is only in the shape and distribution of the grinding wheel protrusions 3.

[0045] Specifically, Figure 3The grinding wheel boss 3 in this embodiment includes a first grinding wheel boss and a second grinding wheel boss, wherein the first grinding wheel boss is an irregular arc plate, the second grinding wheel boss is a regular cylindrical shape, and the first grinding wheel boss and the second grinding wheel boss are alternately arranged on the annular portion around the axis of the grinding wheel base 2.

[0046] It can be seen that the second grinding wheel boss is located between two adjacent first grinding wheel bosses, so that two chip removal grooves 5 are formed between each second grinding wheel boss and the two adjacent first grinding wheel bosses.

[0047] Further, the first grinding wheel boss is blade-shaped, one end of the first grinding wheel boss is connected to the outer edge of the annular portion, and the width of the first grinding wheel boss gradually increases from the inner edge of the annular portion to its outer edge. Further, the curvature of the left side of the first grinding wheel boss is smaller than the curvature of the right side, that is, the first grinding wheel boss is distributed in the distribution mode of impeller blades.

[0048] It should be noted that the first grinding wheel boss is configured to be blade-shaped, so that the grinding chips generated during grinding can more easily enter the chip removal groove 5, thereby improving the chip removal efficiency.

[0049] Preferably, eight first grinding wheel bosses and eight second grinding wheel bosses are provided.

[0050] Preferably, in this embodiment, the particle size of the diamond abrasive grains 4 on the grinding surface of the grinding wheel boss 3 is 212 μm-250 μm.

[0051] Embodiment three:

[0052] like Figure 4 As shown, the third embodiment of the present invention provides a brazed diamond grinding wheel with protrusions. The difference between the second embodiment and the first embodiment is only in the shape and distribution of the grinding wheel protrusion 3.

[0053] Specifically, Figure 4 As shown, the grinding wheel boss 3 includes a third grinding wheel boss and a fourth grinding wheel boss, and the third grinding wheel boss and the fourth grinding wheel boss are both regular fan-shaped, wherein a plurality of third grinding wheel bosses are evenly arranged at the outer edge of the annular portion around the axis of the grinding wheel base 2, and a plurality of fourth grinding wheel bosses are evenly arranged at the inner edge of the annular portion around the axis of the grinding wheel base 2, and the axis of the third grinding wheel boss, the axis of the fourth grinding wheel boss and the axis of the annular portion are collinear.

[0054] In this way, a chip groove 5 is formed between two adjacent third grinding wheel bosses, a chip groove 5 is also formed between two adjacent third grinding wheel bosses, and a chip groove 5 is also formed between the third grinding wheel bosses. That is, such a distribution method increases the number of chip grooves 5, which can accommodate more grinding chips, so as to reduce dust generated during grinding and improve grinding efficiency.

[0055] As a preferred embodiment, the length of the third grinding wheel boss is greater than the length of the third grinding wheel boss, and the number of the third grinding wheel boss and the third grinding wheel boss is the same. Specifically, the number of the third grinding wheel boss and the third grinding wheel boss are both 6.

[0056] Preferably, in this embodiment, the particle size of the diamond abrasive grains 4 on the grinding surface of the grinding wheel boss 3 is 400 μm-500 μm.

[0057] Embodiment 4:

[0058] The fourth embodiment of the present utility model provides a brazed diamond grinding wheel with protrusions. The difference between the fourth embodiment and the first embodiment is only in the shape and distribution of the grinding wheel protrusions 3.

[0059] Specifically, the grinding wheel boss 3 in the fourth embodiment is an irregular L-shape, and a plurality of L-shaped grinding wheel bosses 3 are evenly arranged on the outer edge of the annular portion around the axis of the grinding wheel base 2, and a chip removal groove 5 is formed between two adjacent L-shaped grinding wheel bosses 3.

[0060] In addition, it should be noted that the shape and number of the grinding wheel bosses 3 on the brazed diamond grinding wheel are not specifically limited. The grinding wheel bosses 3 on the brazed diamond grinding wheel can be irregular, regular, or a combination of regular grinding wheel bosses 3 and irregular grinding wheel bosses 3.

[0061] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0063] The above description is only a preferred embodiment of the present invention and is 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. A brazed diamond grinding wheel with convex points, characterized in that: The grinding wheel base (2) comprises a truncated cone portion and an annular portion connected to each other, wherein the annular portion is coaxially arranged with the truncated cone portion; The working surface of the annular portion is provided with a plurality of grinding wheel bosses (3) protruding in a direction away from the truncated cone portion and a chip discharge groove (5) for discharging grinding chips; Diamond abrasive grains (4) are brazed onto the grinding surface of the grinding wheel boss (3).

2. A brazed diamond grinding wheel with convex points according to claim 1, characterized in that: The chip removal groove (5) is formed between two adjacent grinding wheel bosses (3).

3. A brazed diamond grinding wheel with convex points according to claim 2, characterized in that: The grinding wheel bosses (3) are in a regular shape, and the chip removal grooves (5) are formed between the grinding wheel bosses (3) in a regular shape.

4. The brazed diamond grinding wheel with convex points according to claim 2, characterized in that: The grinding wheel bosses (3) are irregular in shape, and the chip removal grooves (5) are formed between the irregular grinding wheel bosses (3).

5. The brazed diamond grinding wheel with convex points according to claim 2, characterized in that: The grinding wheel boss (3) comprises a regular grinding wheel boss (3) and an irregular grinding wheel boss (3).

6. The brazed diamond grinding wheel with convex points according to claim 3, characterized in that: The cross section of the grinding wheel boss (3) is fan-shaped, and a plurality of fan-shaped grinding wheel bosses (3) are evenly distributed around the axis of the grinding wheel base (2), and the axis of the fan-shaped grinding wheel boss (3) is colinear with the axis of the annular portion.

7. The brazed diamond grinding wheel with convex points according to claim 5, characterized in that: The grinding wheel boss (3) comprises a first grinding wheel boss and a second grinding wheel boss, wherein the first grinding wheel boss is in the shape of an arc plate, and the second grinding wheel boss is in the shape of a cylinder; the first grinding wheel boss and the second grinding wheel boss are alternately arranged in sequence around the axis of the grinding wheel base (2), and the chip removal groove (5) is formed between the second grinding wheel boss and two adjacent first grinding wheel bosses.

8. The brazed diamond grinding wheel with convex points according to claim 7, characterized in that: The width of the first grinding wheel boss gradually increases from the inner edge of the annular portion to its outer edge, the first grinding wheel boss has a first side surface and a second side surface opposite to each other, the curvature of the first side surface is greater than the curvature of the second side surface, and the second grinding wheel boss is located between the first side surface of an adjacent first grinding wheel boss and the second side surface of another adjacent first grinding wheel boss.

9. The brazed diamond grinding wheel with convex points according to claim 3, characterized in that: The grinding wheel boss (3) comprises a third grinding wheel boss and a fourth grinding wheel boss, and the cross-sections of the third grinding wheel boss and the fourth grinding wheel boss are both fan-shaped; a plurality of the third grinding wheel bosses are evenly arranged on the outer edge of the annular portion around the axis of the grinding wheel base (2), and a plurality of the fourth grinding wheel bosses are evenly arranged on the inner edge of the annular portion around the axis of the grinding wheel base (2); the axes of the third grinding wheel bosses, the fourth grinding wheel bosses and the annular portion are collinear.

10. A brazed diamond grinding wheel with protrusions according to any one of claims 1 to 7, characterized in that: A plurality of weight-reducing holes (6) are provided on the side wall of the truncated cone portion of the grinding wheel base (2), and the plurality of weight-reducing holes (6) are evenly arranged around the axis of the grinding wheel base (2).

Images