PCBN cutter grinding clamp and grinding equipment

Abstract

The invention provides a PCBN cutter grinding clamp and grinding equipment, and relates to the technical field of cutter grinding. The positioning piece comprises a bearing face, the limiting block is arranged on the bearing face and detachably connected with the positioning piece, the PCBN cutter is arranged on the bearing face, the limiting block comprises a limiting groove, a part of the PCBN cutter is arranged in the limiting groove, and the limiting block limits movement of the PCBN cutter in the first direction; the force application component can apply force to the crimping component, so that the crimping component moves towards the PCBN cutter in the second direction; in the moving process, part of the crimping component extends into the positioning hole, and the positioning piece applies force in the third direction to the crimping component. According to the PCBN cutter grinding clamp, the PCBN cutter can be limited in three directions through cooperation of the limiting block, the positioning piece, the crimping component and the force application component, stable clamping of the PCBN cutter is achieved, the grinding precision of the PCBN cutter is improved, and therefore the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of tool grinding, and particularly to a PCBN tool grinding fixture and grinding equipment. Background Art

[0002] The production of polycrystalline cubic boron nitride (PCBN) and its products is an important branch of the superhard materials industry. Since PCBN tools were first introduced as cutting tool materials, they have gradually become the preferred tools for solving difficult-to-machine materials. They can be used to machine difficult-to-machine materials such as hardened steel, cast iron, superalloys, and powder metallurgy materials after quenching. Nowadays, PCBN tools are gradually replacing traditional carbide tools and ceramic tools with many excellent characteristics such as high wear resistance, high corrosion resistance, high removal rate, and high cost performance, and are widely used in the field of ferrous metal processing in industries such as automotive, aviation, and shipbuilding.

[0003] In enterprises engaged in the machining of hardened parts, grinding is a main method for the final shaping of parts. With the improvement of machine tool rigidity and the development of PCBN tools, PCBN tools have shown great advantages in the hardened cutting of ferrous metals such as cast iron and hardened steel, and are deeply favored by machining enterprises such as automotive, die, and mining machinery. However, as is well known, PCBN materials are artificially synthesized under extremely harsh high-temperature and high-pressure conditions, and the prices of PCBN tools are not cheap. Therefore, many enterprises choose to send waste tools to professional tool manufacturing enterprises for secondary grinding after the PCBN tools are worn. Although the grinding cost is lower than the cost of buying new tools, it is still much more expensive than the price of traditional tools. There are also some machining enterprises that have their own tool grinding personnel, but due to the limited experience level of the workers and the accuracy and convenience of the tooling fixtures, the quality of the ground tools is uneven.

[0004] Tool grinding started in the 1970s. For the traditional grinding of welded integral alloy tools, the operator holds the tool handle close to the grinding wheel, which is very dangerous and the grinding quality cannot be guaranteed. Later, some safer grinding fixtures were designed to replace hand-held grinding, but the above-mentioned fixtures can only be applied to the grinding of traditional welded integral alloy tools, and they cannot be applied to the grinding of PCBN indexable inserts with different shapes and sizes. The use and adjustment are not convenient, and the actual grinding efficiency is relatively low.

[0005] Meanwhile, the actual grinding of PCBN tools is no less difficult than the manufacturing of new tools. The dimensional accuracy of PCBN tools before wear is within the tolerance range. When grinding, it is necessary to ensure the original IC value of the tool and prevent the tip from deflecting left or right. At the same time, the M value of the ground cutting edge must meet the design requirements, and chamfering treatment of the cutting edge should be carried out during grinding. The tip allowance before grinding is very small, and the size and position of tip wear failure are random. This requires rich tool manufacturing experience and good fixture accuracy. Grinding PCBN tools by hand cannot meet the grinding requirements of PCBN tools. Summary of the Invention

[0006] In view of this, the present application provides a PCBN tool grinding fixture and grinding equipment to solve the problem that grinding PCBN tools by hand cannot meet the grinding requirements of PCBN tools.

[0007] According to one aspect of the present application, a PCBN tool grinding fixture is provided. The PCBN tool grinding fixture is used to clamp a PCBN tool. The PCBN tool includes a positioning hole. The PCBN tool grinding fixture includes a limiting block, a positioning member, a pressing member, and a force applying member. The positioning member includes a supporting surface. The limiting block is arranged on the supporting surface. The PCBN tool is arranged on the supporting surface. The limiting block includes a limiting groove. A part of the PCBN tool is arranged in the limiting groove, so that the limiting block restricts the movement of the PCBN tool in the first direction;

[0008] The pressing member is located on one side of the positioning member in the second direction. The force applying member can apply a force to the pressing member, so that the pressing member moves towards the PCBN tool along the second direction;

[0009] During the movement, a part of the pressing member extends into the positioning hole. The positioning member applies a force to the pressing member along the third direction. The second direction intersects with the first direction. The third direction intersects with the plane determined by the first direction and the second direction.

[0010] Preferably, the pressing member includes a pressing body, a first pressing member, and a second pressing member. The first pressing member and the second pressing member are connected to the pressing body on the same side in the second direction. The first pressing member and the second pressing member are arranged at intervals along the third direction;

[0011] The positioning member includes a positioning groove. At least a part of the first pressing member can extend into the positioning hole. At least a part of the second pressing member can extend into the positioning groove.

[0012] Preferably, the second crimping member includes a first abutting surface facing the first crimping member. The first end of the first abutting surface in the second direction is connected to the crimping body, and the second end of the first abutting surface in the second direction is inclined away from the first crimping member relative to the first end of the first abutting surface in the second direction.

[0013] The groove wall of the positioning groove includes a second abutting surface. The first end of the second abutting surface is located on the side of the second end of the second abutting surface facing away from the crimping member in the second direction. The first end of the second abutting surface is inclined away from the first crimping member relative to the second end of the second abutting surface, and the first abutting surface and the second abutting surface can be attached to each other.

[0014] Preferably, the groove wall of the limiting groove includes two positioning planes, and the extending directions of the two positioning planes intersect. In the direction from the first crimping member to the second crimping member, the distance between the two positioning planes in the first direction gradually decreases.

[0015] Preferably, the crimping body includes a first connection hole penetrating the crimping body in the second direction, and the positioning member is provided with a second connection hole extending in the second direction.

[0016] The force applying member includes a force applying member and a connecting member. The force applying member abuts against the side of the crimping body facing away from the positioning member. The connecting member extends into the second connection hole through the first connection hole and is threadedly connected to the hole wall of the second connection hole.

[0017] Preferably, the size of the first connection hole in the third direction is larger than the size of the connecting member in the third direction.

[0018] Preferably, the PCBN tool grinding fixture further includes a base, a mounting member and a fastening member. The mounting member is connected to the side of the positioning member where the second crimping member is located. The base includes a limiting hole and a connecting groove. The limiting hole penetrates the base in the third direction. The connecting groove is recessed into the base from one side of the base in the first direction, and the connecting groove is communicated with the limiting hole.

[0019] The mounting member is arranged in the limiting hole, and the fastening member can apply force to the base so that two parts of the base on both sides of the connecting groove approach each other in the second direction.

[0020] Preferably, a plurality of scale lines are provided on the side of the base facing away from the positioning member, and the plurality of scale lines are equidistantly spaced along the circumferential direction of the limiting hole.

[0021] On one side of the mounting member facing away from the positioning member, there is an identification portion provided, and the mounting member can rotate within the limiting hole so that the identification portion points to one of the scale lines.

[0022] Preferably, the positioning member encloses a first liquid inlet cavity, and on one side of the positioning member facing away from the mounting member in the third direction, there is a liquid outlet provided, and the liquid outlet is communicated with the first liquid inlet cavity;

[0023] The mounting member encloses a second liquid inlet cavity, and on one side of the mounting member facing away from the positioning member in the third direction, there is a liquid inlet provided, and the liquid inlet is communicated with the second liquid inlet cavity, and the first liquid inlet cavity is communicated with the second liquid inlet cavity.

[0024] According to another aspect of the present application, there is provided a grinding device, which includes a grinding machine and the above-mentioned PCBN tool grinding fixture, and the PCBN tool grinding fixture is fixed on the grinding machine.

[0025] When the PCBN tool grinding fixture of the present application is in use, a part of the PCBN tool is arranged in the limiting groove, so that the limiting block restricts the movement of the PCBN tool in the first direction. By applying a force to the pressing member through the force-applying member, the pressing member moves towards the PCBN tool along the second direction; during the movement of the pressing member, a part of the pressing member extends into the positioning hole, so as to realize the limiting of the PCBN tool in the second direction. At the same time, during the movement of the pressing member, the positioning member applies a force to the pressing member along the third direction, so as to realize the limiting of the PCBN tool in the second direction. In this way, the limiting of the PCBN tool in three directions of the first direction, the second direction and the third direction is realized, the stable clamping of the PCBN tool is realized, the grinding accuracy of the PCBN tool is improved, and thus the production efficiency is improved. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 A relative position diagram of the PCBN tool grinding fixture and the grinding wheel showing the embodiments of the present invention;

[0028] Figure 2 A relative position diagram showing the mounting member and the positioning member;

[0029] Figure 3 A relative position diagram showing the positioning member, the limiting block and the PCBN tool;

[0030] Figure 4 A diagram showing the relative positions of the positioning member and the limiting block;

[0031] Figure 5 A diagram showing the relative positions of the force - applying member and the crimping member;

[0032] Figure 6 A schematic structural diagram of the crimping member;

[0033] Figure 7 A schematic structural diagram of the base;

[0034] Figure 8 A schematic structural diagram of the PCBN tool grinding fixture is shown.

[0035] Icons: 1 - PCBN tool; 11 - positioning hole; 2 - limiting block; 21 - limiting groove; 22 - avoidance groove; 3 - positioning member; 31 - first positioning plate; 32 - second positioning plate; 33 - third positioning plate; 34 - placement groove; 35 - second connection hole; 36 - liquid outlet; 37 - positioning groove; 4 - crimping member; 41 - crimping body; 411 - first connection hole; 42 - first crimping piece; 43 - second crimping piece; 5 - force - applying member; 51 - force - applying piece; 52 - connecting piece; 6 - mounting piece; 61 - liquid inlet; 62 - marking part; 7 - base; 71 - notch; 72 - limiting hole; 73 - connecting groove; 74 - scale line; 81 - fastener; 82 - bolt; 83 - connecting rod; 9 - grinding wheel; S1 - supporting surface; S2 - positioning plane; S3 - first abutting surface; S4 - second abutting surface; L1 - first direction; L2 - second direction; L3 - third direction. Detailed implementation manners

[0036] The following detailed implementation manners are provided to assist the reader in obtaining a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent. For example, the order of operations described herein is merely exemplary and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0037] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0038] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it can be directly "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, or there can be one or more other elements intervening between them. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there can be no other elements intervening between them.

[0039] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0040] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another. Thus, the first component, element, region, layer, or part described in the examples herein may also be referred to as the second component, element, region, layer, or part without departing from the teachings of the examples.

[0041] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0042] The terms used herein are for describing various examples only and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0043] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Accordingly, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0044] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Additionally, although the examples described herein have various configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

[0045] The following will be combined with Figures 1 to 8 describe the PCBN tool grinding fixture of the present application, wherein the first direction L1 intersects with the second direction L2, and the third direction L3 intersects with the plane determined by the first direction L1 and the second direction L2. Preferably, the first direction L1, the second direction L2, and the third direction L3 are perpendicular to each other in pairs.

[0046] As Figures 1 to 8 shown, the PCBN tool grinding fixture includes a limit block 2, a positioning member 3, a crimping member 4, and a force applying member 5. The positioning member 3 includes a supporting surface S1. The limit block 2 is disposed on the supporting surface S1. The PCBN tool 1 is disposed on the supporting surface S1. The limit block 2 includes a limit groove 21. A part of the PCBN tool 1 is disposed in the limit groove 21, such that the limit block 2 restricts the movement of the PCBN tool 1 in the first direction L1. The crimping member 4 is located on one side of the positioning member 3 in the second direction L2. The force applying member 5 can apply a force to the crimping member 4, such that the crimping member 4 moves toward the PCBN tool 1 along the second direction L2. During the movement, a part of the crimping member 4 extends into the positioning hole 11, and the positioning member 3 applies a force to the crimping member 4 along the third direction L3.

[0047] In the PCBN tool grinding fixture of the present application, the limit block 2 is detachably connected to the positioning member 3. When grinding PCBN tools 1 with different shapes and sizes, different positioning members 3 can be replaced. Before grinding, a part of the PCBN tool 1 is arranged in the limit groove 21, so that the limit block 2 restricts the movement of the PCBN tool 1 in the first direction L1. By applying a force to the pressing member 4 through the force-applying member 5, the pressing member 4 moves towards the PCBN tool 1 along the second direction L2; during the movement of the pressing member 4, a part of the pressing member 4 extends into the positioning hole 11, thereby realizing the limitation of the PCBN tool 1 in the second direction L2. At the same time, during the movement of the pressing member 4, the positioning member 3 applies a force to the pressing member 4 along the third direction L3, thereby realizing the limitation of the PCBN tool 1 in the second direction L2. In this way, the limitation of the PCBN tool 1 in the three directions of the first direction L1, the second direction L2, and the third direction L3 is realized, the stable clamping of the PCBN tool 1 is realized, the grinding accuracy of the PCBN tool 1 is improved, and the production efficiency is thus improved.

[0048] In an embodiment of the present application, as Figure 2 , Figure 3 and Figure 4 shown, the PCBN tool grinding fixture further includes a mounting member 6. The mounting member 6 is cylindrical, and the mounting member 6 and the positioning member 3 may be integrally formed. The positioning member 3 includes a first positioning plate 31. The positioning member 3 includes a placement groove 34 recessed from the first positioning plate 31 towards the positioning member 3. The bottom surface of the placement groove 34 is the supporting surface S1, and the supporting surface S1 is perpendicular to the second direction L2. The limit block 2 can be fixed on the supporting surface S1 through a bolt 82, so as to facilitate the replacement of different limit blocks 2 according to different shapes and sizes of the PCBN tool 1.

[0049] In addition, the thickness of the limit block 2 in the second direction L2 is less than the thickness of the PCBN tool 1 in the second direction L2, so as to ensure that the pressing member 4 can press the PCBN tool 1 in the second direction L2.

[0050] Further, the limiting groove 21 is located on the side of the first positioning plate 31 facing away from the mounting member 6 in the third direction L3, and the limiting block 2 is installed in the limiting groove 21. The groove wall of the limiting groove 21 includes two positioning planes S2, both of the two positioning planes S2 can be perpendicular to the supporting plane S1, and the extending directions of the two positioning planes S2 intersect. In the direction of the positioning member 3 pointing to the mounting member 6, the distance between the two positioning planes S2 gradually decreases in the first direction L1. When the PCBN tool 1 is placed in the limiting groove 21, the bottom of the PCBN tool 1 contacts the supporting plane S1, and the two side surfaces of the PCBN tool 1 are respectively abutted against the two positioning planes S2. Through the cooperation of the two positioning planes S2, the limiting of the PCBN tool 1 in the first direction L1 can be realized. Optionally, the angles formed by the two positioning planes S2 in different limiting blocks 2 are different to adapt to PCBN tools 1 with different shapes and sizes.

[0051] In addition, the limiting block 2 further includes an avoidance groove 22, and the avoidance groove 22 is located between the two positioning planes S2. The tip of the PCBN tool 1 can extend into the avoidance groove 22 to ensure that the two side surfaces of the PCBN tool 1 are respectively abutted against the two positioning planes S2, so as to realize the limiting of the PCBN tool 1 in the first direction L1.

[0052] Optionally, the shape of the limiting block 2 provided in the present application is not only adapted to the form of the PCBN tool 1 shown in Figure 3 , but it can also be applicable to the PCBN tool 1 with an arc-shaped surface. Different positions of the arc-shaped surface are respectively abutted against the two positioning planes S2, and at this time, the positioning of the PCBN tool 1 with an arc-shaped surface in the first direction L1 can be realized.

[0053] In the embodiment of the present application, as shown in Figure 2 , the positioning member 3 further includes a second positioning plate 32 and a third positioning plate 33. The second positioning plate 32 and the third positioning plate 33 are located on the side of the positioning member 3 facing away from the mounting member 6 in the third direction L3. The second positioning plate 32 and the third positioning plate 33 are connected. One end of the second positioning plate 32 facing away from the first positioning plate 31 in the second direction L2 is inclined towards the side where the mounting member 6 is located relative to one end of the second positioning plate 32 facing the first positioning plate 31 in the second direction L2. One end of the third positioning plate 33 facing away from the first positioning plate 31 in the second direction L2 is inclined towards the side where the mounting member 6 is located relative to one end of the third positioning plate 33 facing the first positioning plate 31 in the second direction L2, so as to avoid interference between the second positioning plate 32 and the third positioning plate 33 and the grinding wheel 9 of the grinding machine.

[0054] Further, as shown in Figure 2 and Figure 3As shown, the positioning member 3 defines a first liquid inlet chamber. The positioning member 3 is provided with a liquid outlet 36 on the side facing away from the mounting member 6 in the third direction L3, and the liquid outlet 36 communicates with the first liquid inlet chamber. The mounting member 6 defines a second liquid inlet chamber. The mounting member 6 is provided with a liquid inlet 61 on the side facing away from the positioning member 3 in the third direction L3, and the liquid inlet 61 communicates with the second liquid inlet chamber. The first liquid inlet chamber communicates with the second liquid inlet chamber. In this way, coolant can be provided to the grinding wheel 9 through the liquid inlet 61, the second liquid inlet chamber, the first liquid inlet chamber, and the liquid outlet 36. Adding coolant during grinding helps with the precision forming of the cutting edge of the PCBN tool 1. The coolant can carry away most of the grinding heat and grinding powder, and at the same time clean the grinding wheel 9.

[0055] Preferably, the second positioning plate 32 and the third positioning plate 33 are both provided with the liquid outlet 36.

[0056] As Figure 3 , Figure 5 and Figure 6 shown, the crimping member 4 includes a crimping body 41, a first crimping member 42, and a second crimping member 43. The first crimping member 42 and the second crimping member 43 are connected to the same side of the crimping body 41 in the second direction L2, and the first crimping member 42 and the second crimping member 43 are arranged at intervals in the third direction L3. The first crimping member 42 is spherical, and at least part of the first crimping member 42 can extend into the positioning hole 11 to press the PCBN tool 1 in the second direction L2. The positioning member 3 includes a positioning groove 37, and at least part of the second crimping member 43 can extend into the positioning groove 37. The groove wall of the positioning groove 37 can apply a force on the second crimping member 43 in the third direction L3 towards the mounting member 6, so that the first crimping member 42 applies a force on the PCBN tool 1 in the third direction L3 towards the mounting member 6, thereby tensioning the PCBN tool 1 in the third direction L3.

[0057] Preferably, the second crimping member 43 has a block structure. The second crimping member 43 includes a first abutting surface S3 facing the first crimping member 42. The first end of the first abutting surface S3 in the second direction L2 is connected to the crimping main body 41. The second end of the first abutting surface S3 in the second direction L2 is inclined away from the first crimping member 42 relative to the first end of the first abutting surface S3 in the second direction L2. The groove wall of the positioning groove 37 includes a second abutting surface S4. The first end of the second abutting surface S4 in the second direction L2 is located on the side of the second end of the second abutting surface S4 in the second direction L2 facing away from the crimping main body 41. The first end of the second abutting surface S4 is inclined away from the first crimping member 42 relative to the second end of the second abutting surface S4. The first abutting surface S3 and the second abutting surface S4 can be fitted. When the force-applying member 5 applies a force to the crimping member 4 to make the crimping member 4 move toward the positioning member 3, the second crimping member 43 extends into the positioning groove 37, and a part of the first abutting surface S3 contacts the second abutting surface S4. As the crimping member 4 moves, the second abutting surface S4 applies a force to the first abutting surface S3, so that while the crimping member 4 moves toward the positioning member 3 along the second direction L2, it moves toward the side where the mounting member 6 is located in the third direction L3. Since the first positioning member 3 extends into the positioning hole 11 of the PCBN tool 1, the crimping member 4 applies a force toward the mounting member 6 to the PCBN tool 1 in the third direction L3, thereby tightening the PCBN tool 1 in the third direction L3.

[0058] In an embodiment of the present application, as Figure 5 and Figure 6 shown, the crimping main body 41 includes a first connection hole 411 penetrating the crimping main body 41 along the second direction L2, and the positioning member 3 is provided with a second connection hole 35 extending along the second direction L2. The force-applying member 5 includes a force-applying member 51 and a connecting member 52. The force-applying member 51 abuts against the side of the crimping main body 41 facing away from the positioning member 3. An external thread is formed on the outer side wall of the connecting member 52. The connecting member 52 extends into the second connection hole 35 through the first connection hole 411 and is threadedly connected to the hole wall of the second connection hole 35. Thus, by screwing the force-applying member 5, the crimping member 4 can be moved toward the positioning along the second direction L2, thereby realizing the positioning of the PCBN tool 1.

[0059] In addition, the outer diameter of the force-applying member 51 is larger than the outer diameter of the connecting member 52, and a pattern is formed on the outer side wall of the force-applying member 51, which enables the operator to tighten the force-applying member 5 by hand-twisting the force-applying member 51, thereby realizing the positioning of the PCBN tool 1.

[0060] Further, the dimension of the first connection hole 411 in the third direction L3 is larger than the dimension of the connecting member 52 in the third direction L3, so that the crimping member 4 can move relative to the force-applying member 5 toward the mounting member 6 in the third direction L3, thereby tightening the PCBN tool 1 in the third direction L3.

[0061] As Figure 7 and Figure 8 shown, the PCBN tool grinding fixture further includes a base 7 and a fastener 81. The base 7 includes a notch 71, and a part of the grinding machine extends into the notch 71. The connecting rod 83 passes through the base 7 and the grinding machine, so as to fix the PCBN grinding fixture on the grinding machine. The base 7 includes a limiting hole 72 and a connecting groove 73. The limiting hole 72 penetrates the base 7 along the third direction L3. The connecting groove 73 is recessed from one side of the base 7 in the first direction L1 into the interior of the base 7. The connecting groove 73 communicates with the limiting hole 72. The mounting member 6 is arranged in the limiting hole 72. The fastener 81 can apply a force to the base 7, so that two parts of the base 7 on both sides of the connecting groove 73 in the second direction L2 approach each other, thereby fixing the mounting member 6 and the positioning member 3 through the base 7.

[0062] Preferably, the fastener 81 can be a bolt.

[0063] Further, a plurality of scale lines 74 are arranged on one side of the base 7 facing away from the positioning member 3. The plurality of scale lines 74 are equidistantly arranged at intervals along the circumferential direction of the limiting hole 72. A marking portion 62 is arranged on one side of the mounting member 6 facing away from the positioning member 3. The mounting member 6 can rotate in the limiting hole 72, so that the marking portion 62 points to a scale line 74. Thus, the inclination degree of the positioning member 3 can be adjusted based on the scale line 74, so as to adjust the grinding angle of the PCBN tool 1 to meet the angle grinding requirements of various complex PCBN tools 1.

[0064] When the PCBN tool grinding fixture of the present application is in use, the PCBN tool 1 is placed on the supporting surface S1, and the PCBN tool 1 is abutted against the two positioning planes S2, so as to realize the limitation of the PCBN tool 1 in the first direction L1. Then, the force applying member 5 is screwed, so that the pressing member 4 moves along the second direction L2 towards the positioning member 3, so that the first pressing member 42 extends into the positioning hole 11. Through the cooperation of the supporting surface S1 and the first pressing member 42, the limitation of the PCBN tool 1 in the second direction L2 is realized. The second pressing member 43 extends into the limiting groove 21, and the first abutting surface S3 contacts the second abutting surface S4. Under the action of the second abutting surface S4, the pressing member 4 moves towards the side where the mounting member 6 is located along the third direction L3 while moving along the second direction L2, so that the pressing member 4 applies a force towards the mounting member 6 to the PCBN tool 1 in the third direction L3, thereby tightening the PCBN tool 1 in the third direction L3.

[0065] According to another aspect of the present application, a grinding device is provided. The grinding device includes a grinding machine and the above-mentioned PCBN tool grinding fixture. The PCBN tool grinding fixture is fixed on the grinding machine. The grinding device has the same technical effects as the above-mentioned PCBN tool grinding fixture, and will not be elaborated here.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PCBN tool grinding fixture, the PCBN tool grinding fixture is used to clamp a PCBN tool, the PCBN tool includes a positioning hole, and is characterized in that: The PCBN tool grinding fixture comprises a limit block, a positioning member, a crimping member and a force-applying member, the positioning member comprises a supporting surface, the limit block is arranged on the supporting surface, the PCBN tool is arranged on the supporting surface, the limit block comprises a limit groove, a part of the PCBN tool is arranged in the limit groove, so that the limit block limits the movement of the PCBN tool in the first direction; The crimping member is located at one side of the positioning member in the second direction, and the force applying member can apply force to the crimping member so that the crimping member moves toward the PCBN tool along the second direction; During the movement, part of the crimping member extends into the positioning hole, and the positioning member applies a force along a third direction to the crimping member, the second direction intersects with the first direction, and the third direction intersects with a plane defined by the first direction and the second direction.

2. The PCBN tool grinding fixture according to claim 1, characterized in that: The crimping member includes a crimping body, a first crimping piece and a second crimping piece, the first crimping piece and the second crimping piece are connected to the same side of the crimping body in the second direction, and the first crimping piece and the second crimping piece are arranged at intervals along the third direction; The positioning member comprises a positioning groove, at least a portion of the first crimping member can extend into the positioning hole, and at least a portion of the second crimping member can extend into the positioning groove.

3. The PCBN tool grinding fixture according to claim 2, characterized in that: The second crimping member includes a first abutting surface facing the first crimping member, a first end of the first abutting surface in the second direction is connected to the crimping body, and a second end of the first abutting surface in the second direction is inclined relative to the first end of the first abutting surface in the second direction toward a direction away from the first crimping member; The groove wall of the positioning groove includes a second abutment surface, the first end of the second abutment surface is located on the side of the second end of the second abutment surface facing away from the crimping component in the second direction, the first end of the second abutment surface is inclined relative to the second end of the second abutment surface in a direction away from the first crimping member, and the first abutment surface and the second abutment surface can fit together.

4. The PCBN tool grinding fixture according to claim 2, characterized in that: The groove wall of the limiting groove includes two positioning planes, and the extension directions of the two positioning planes intersect each other. In the direction from the first crimping piece to the second crimping piece, the distance between the two positioning planes in the first direction gradually decreases.

5. The PCBN tool grinding fixture according to any one of claims 2 to 4, characterized in that: The crimping body comprises a first connection hole penetrating the crimping body along the second direction, and the positioning member is provided with a second connection hole extending along the second direction; The force-applying member includes a force-applying member and a connecting member. The force-applying member abuts against a side of the crimping body facing away from the positioning member. The connecting member extends into the second connecting hole through the first connecting hole and is threadedly connected to the hole wall of the second connecting hole.

6. The PCBN tool grinding fixture according to claim 5, characterized in that: The dimension of the first connecting hole in the third direction is greater than the dimension of the connecting member in the third direction.

7. The PCBN tool grinding fixture according to claim 2, characterized in that: The PCBN tool grinding fixture further includes a base, a mounting member and a fastener, wherein the mounting member is connected to the side of the positioning member where the second crimping member is located, the base includes a limiting hole and a connecting groove, the limiting hole penetrates the base along the third direction, the connecting groove is recessed from one side of the base in the first direction toward the inside of the base, and the connecting groove is connected to the limiting hole; The mounting member is arranged in the limiting hole, and the fastener can apply force to the base so that two parts of the base located on both sides of the connecting groove in the second direction are close to each other.

8. The PCBN tool grinding fixture according to claim 7, characterized in that: A plurality of scale lines are arranged on a side of the base facing away from the positioning member, and the plurality of scale lines are arranged at equal intervals along the circumference of the limiting hole; A marking portion is provided on a side of the mounting member facing away from the positioning member, and the mounting member can rotate in the limiting hole so that the marking portion points to one of the scale lines.

9. The PCBN tool grinding fixture according to claim 7, characterized in that: The positioning member surrounds a first liquid inlet cavity, and the positioning member is provided with a liquid outlet on a side facing away from the mounting member in the third direction, and the liquid outlet is communicated with the first liquid inlet cavity; The mounting member encloses a second liquid inlet cavity, and the mounting member has a liquid inlet opening on a side facing away from the positioning member in the third direction, the liquid inlet opening is communicated with the second liquid inlet cavity, and the first liquid inlet cavity is communicated with the second liquid inlet cavity.

10. A grinding device, characterized in that: The grinding equipment comprises a grinding machine and a PCBN tool grinding fixture according to any one of claims 1 to 9, wherein the PCBN tool grinding fixture is fixed on the grinding machine.

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