Polycrystalline cubic boron nitride composite sheet

Abstract

The utility model discloses a polycrystalline cubic boron nitride composite sheet, and particularly relates to the technical field of polycrystalline cubic boron nitride, the polycrystalline cubic boron nitride composite sheet comprises a first sheet body and a second sheet body, the middle parts of the first sheet body and the second sheet body are respectively provided with a central tray for positioning, and the two central trays are arranged in a laminated manner; and center holes are formed in the middle parts of the two center trays in a penetrating manner. According to the utility model, through the corresponding cooperative use of the structures, the first chip removal channel and the second chip removal channel are easy to quickly remove heat generated by the first sheet body and the second sheet body during cutting, and meanwhile, the first chip removal channel and the second chip removal channel are obliquely arranged, so that the heat generated by the first sheet body and the second sheet body during rotation can be quickly removed; scraps generated by cutting can be dredged and discharged through the first chip removal channel and the second chip removal channel through torsion generated when the first sheet body and the second sheet body rotate, so that the chip removal efficiency and effect are improved when the first sheet body and the second sheet body are used for cutting.

Description

Technical Field

[0001] The utility model relates to the technical field of polycrystalline cubic boron nitride, and more specifically, to a polycrystalline cubic boron nitride composite sheet. Background Art

[0002] Polycrystalline cubic boron nitride composite sheet is a composite material composed of a polymer matrix and cubic boron nitride particles. Polycrystalline cubic boron nitride composite sheet also has excellent electrical insulation properties and a low dielectric constant, so it is also widely used in some electronic devices that require electrical insulation properties, such as electronic packaging materials, insulating gaskets, and cutting tools;

[0003] Cutting processing refers to the use of cutting tools (including cutting tools, grinding tools and abrasives) to cut off the excess material layer on the blank or workpiece into chips, so that the workpiece obtains the specified geometric shape, size and surface quality. Polycrystalline cubic boron nitride (PCBN) is a new type of artificial superhard tool cutting material after artificial diamond. Its hardness is second only to diamond, so many cutting tools use polycrystalline cubic boron nitride as the tool head.

[0004] Among them, it was found through searching that the patent application number CN202123126119.8 discloses a polycrystalline cubic boron nitride composite sheet, including a blade body, one side of the blade body is composited with a composite support layer, a blade head is arranged on the blade body, a mounting groove extending to the composite support layer is opened on the blade body, a clamping groove is opened on the side wall of the mounting groove close to the composite support layer, the blade head is embedded in the mounting groove, and a clamp and a ring that can be clamped into the clamping groove are arranged on the outer side wall of the lower end of the blade head, and the blade head is fixed to the composite support layer by bolts;

[0005] When this structure is in use, when the cutter head needs to be replaced, the bolt is removed, and then the cutter head is removed and replaced and installed at the other end to achieve switching, which is convenient for switching different cutter head end angles for cutting, and the cutter head is fixed front and back through the cooperation of the clamp, ring and clamping groove, and the cutter head is fixed front and back for a second time through the bolt, and finally the cutter head is fixed through the installation groove to prevent the cutter head from rotating during cutting and ensure stable fixation during cutting. However, when this structure is in use, the cutter body is an integrated structure, which is not easy to dissipate heat and discharge waste chips generated by cutting during cutting. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a polycrystalline cubic boron nitride composite sheet, aiming to solve the problems raised in the above-mentioned background technology.

[0007] The utility model is implemented in this way. The utility model provides the following technical solutions: a polycrystalline cubic boron nitride composite sheet, comprising a first sheet body and a second sheet body, wherein the middle of the first sheet body and the second sheet body are both provided with a central tray for positioning, and the two central trays are stacked;

[0008] A center hole is formed through the middle of the two center trays, and the two center holes are located on the same axis. A plurality of positioning grooves are distributed on the inner wall of the center hole and along the circumference of the axis point of the center hole.

[0009] It can be seen that in the above technical solution, by setting the center hole and the positioning groove, the first sheet and the second sheet can be positioned when the first sheet and the second sheet are installed, so as to ensure the stability of the first sheet, the second sheet and the center tray installed on the external drive shaft;

[0010] Optionally, in a possible embodiment, a plurality of heat dissipation grooves are distributed on the surfaces of the two center trays and along the circumference of the axis point of the center hole, and the heat dissipation grooves on each center tray are arranged relatively to each other, a plurality of first chip removal channels and second chip removal channels are distributed on the upper surface of the first sheet body and the bottom surface of the second sheet body and along the circumference of the axis point of the first sheet body and the second sheet body, a plurality of extension blocks are distributed in the center of the first sheet body and the second sheet body and along the circumference of the axis point of the first sheet body and the second sheet body, and each of the extension blocks extends to the center tray and is detachably connected to the center tray, a center misaligned cavity is formed between the first sheet body and the second sheet body and the corresponding center tray, the extension block is located in the center misaligned cavity, the first chip removal channel and the second chip removal channel are arranged obliquely, and the first chip removal channels and the second chip removal channels belonging to the first sheet body and the second sheet body are arranged in a stacked manner;

[0011] It can be seen that in the above technical solution, the first chip removal channel and the second chip removal channel are easy to quickly discharge the heat generated during the cutting of the first sheet and the second sheet. At the same time, the first chip removal channel and the second chip removal channel are inclined to facilitate the rotation of the first sheet and the second sheet. The waste chips generated by the cutting can be discharged through the first chip removal channel and the second chip removal channel through the torque when the first sheet and the second sheet rotate, so as to improve the chip removal efficiency and effect of the first sheet and the second sheet during cutting. In addition, through the setting of the extension block, the stability of the first sheet, the second sheet and the center tray when installed together can be guaranteed.

[0012] Technical effects and advantages of the utility model:

[0013] By setting the corresponding coordinated use of each structure, the overall design is simple and the structure is reasonable. Through the setting of the center hole and the positioning groove, the first sheet and the second sheet can be positioned when they are installed to ensure the stability of the first sheet, the second sheet and the center tray installed on the external drive shaft;

[0014] During cutting, the first chip removal channel and the second chip removal channel are easy to quickly discharge the heat generated during cutting of the first sheet body and the second sheet body;

[0015] At the same time, the first chip removal channel and the second chip removal channel are inclined to facilitate the rotation of the first sheet and the second sheet. The waste chips generated by cutting can be discharged through the first chip removal channel and the second chip removal channel by the torque during the rotation of the first sheet and the second sheet, so as to improve the chip removal efficiency and effect of the first sheet and the second sheet during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0017] Figure 1 It is the front view of the overall structure of the utility model.

[0018] Figure 2 This is a front view of the central tray of the utility model installed in the first sheet body.

[0019] Figure 3 For this utility model Figure 2 Top view of the .

[0020] Figure 4 This is a front view of the first sheet of the utility model.

[0021] Figure 5 This is a front view of the center tray of the utility model.

[0022] The figures are marked as follows: 1. first sheet; 2. second sheet; 3. center tray; 4. heat dissipation groove; 5. center hole; 6. positioning groove; 7. extension block; 8. first chip removal channel; 9. second chip removal channel; 10. center offset cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] As attached Figure 1-5 The polycrystalline cubic boron nitride composite sheet shown in the figure, through the corresponding coordinated use of various structures, when the first sheet body 1 and the second sheet body 2 are cutting, the first chip removal channel 8 and the second chip removal channel 9 are easy to quickly discharge the heat generated by the first sheet body 1 and the second sheet body 2 during cutting, and at the same time, the first chip removal channel 8 and the second chip removal channel 9 are inclinedly arranged to facilitate the first sheet body 1 and the second sheet body 2 to rotate, and the waste chips generated by cutting can be discharged through the first chip removal channel 8 and the second chip removal channel 9 through the torque when the first sheet body 1 and the second sheet body 2 rotate, so as to improve the chip removal efficiency and effect of the first sheet body 1 and the second sheet body 2 during cutting, and the specific structural arrangement of the assembly is as follows;

[0025] A polycrystalline cubic boron nitride composite sheet comprises a first sheet body 1 and a second sheet body 2, wherein a central tray 3 for positioning is disposed in the middle of each of the first sheet body 1 and the second sheet body 2, and the two central trays 3 are stacked;

[0026] A center hole 5 is formed through the middle of the two center trays 3 , and the two center holes 5 are located on the same axis. A plurality of positioning grooves 6 are distributed on the inner wall of the center hole 5 and along the circumference of the axis of the center hole 5 .

[0027] There are several heat dissipation grooves 4 distributed on the surfaces of the two center trays 3 and along the circumference of the axis point of the center hole 5, and the heat dissipation grooves 4 on each center tray 3 are arranged opposite to each other, and there are several first chip removal channels 8 and second chip removal channels 9 distributed on the upper surface of the first sheet 1 and the bottom surface of the second sheet 2 and along the circumference of the axis point of the first sheet 1 and the second sheet 2, and there are several extension blocks 7 distributed in the center of the first sheet 1 and the second sheet 2 and along the circumference of the axis point of the first sheet 1 and the second sheet 2, and each extension block 7 extends to the center tray 3 and is detachably connected to the center tray 3, and a center offset cavity 10 is formed between the first sheet 1 and the second sheet 2 and the corresponding center tray 3, and the extension block 7 is located in the center offset cavity 10, the first chip removal channel 8 and the second chip removal channel 9 are arranged obliquely, and the first chip removal channels 8 and the second chip removal channels 9 belonging to the first sheet 1 and the second sheet 2 are arranged in a stacked manner.

[0028] According to the above structure, when in use, the first sheet 1 and the second sheet 2 can be positioned by setting the center hole 5 and the positioning groove 6 when the first sheet 1 and the second sheet 2 are installed, so as to ensure the stability of the first sheet 1, the second sheet 2 and the center tray 3 installed on the external drive shaft;

[0029] At the same time, when the first sheet 1 and the second sheet 2 are being cut, the first chip removal channel 8 and the second chip removal channel 9 are easy to quickly discharge the heat generated by the cutting of the first sheet 1 and the second sheet 2. At the same time, the first chip removal channel 8 and the second chip removal channel 9 are inclined so that when the first sheet 1 and the second sheet 2 are rotated, the waste chips generated by the cutting can be discharged through the first chip removal channel 8 and the second chip removal channel 9 by the torque when the first sheet 1 and the second sheet 2 are rotated, so as to improve the chip removal efficiency and effect of the first sheet 1 and the second sheet 2 when cutting;

[0030] Furthermore, by providing the extension block 7, the stability of the first sheet 1, the second sheet 2 and the center tray 3 when they are installed together can be ensured.

[0031] Different from the prior art, the present application discloses a polycrystalline cubic boron nitride composite sheet. When the first sheet 1 and the second sheet 2 are cutting, the first chip removal channel 8 and the second chip removal channel 9 can easily discharge the heat generated by the cutting of the first sheet 1 and the second sheet 2 quickly. At the same time, the first chip removal channel 8 and the second chip removal channel 9 are inclined to facilitate the rotation of the first sheet 1 and the second sheet 2. The waste chips generated by the cutting can be discharged through the first chip removal channel 8 and the second chip removal channel 9 through the torque when the first sheet 1 and the second sheet 2 rotate, so as to improve the chip removal efficiency and effect of the first sheet 1 and the second sheet 2 during cutting.

[0032] The above are only preferred embodiments of the present invention and are 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 polycrystalline cubic boron nitride composite sheet, characterized in that: It comprises a first sheet (1) and a second sheet (2), wherein a central tray (3) for positioning is arranged in the middle of each of the first sheet (1) and the second sheet (2), and the two central trays (3) are stacked; A center hole (5) is formed through the middle of the two center trays (3), and the two center holes (5) are located on the same axis. A plurality of positioning grooves (6) are distributed on the inner wall of the center hole (5) and along the circumference of the axis of the center hole (5).

2. The polycrystalline cubic boron nitride composite sheet according to claim 1, characterized in that: A plurality of heat dissipation grooves (4) are distributed on the surfaces of the two center trays (3) and along the circumference of the axis point of the center hole (5), and the heat dissipation grooves (4) on each of the center trays (3) are arranged opposite to each other.

3. The polycrystalline cubic boron nitride composite sheet according to claim 1, characterized in that: A plurality of first chip removal channels (8) and second chip removal channels (9) are distributed on the upper surface of the first sheet (1) and the bottom surface of the second sheet (2) and along the circumference of the axis center point of the first sheet (1) and the second sheet (2).

4. The polycrystalline cubic boron nitride composite sheet according to claim 1, characterized in that: A plurality of extension blocks (7) are distributed at the center of the first sheet (1) and the second sheet (2) and along the circumference of the axis point of the first sheet (1) and the second sheet (2), and each of the extension blocks (7) extends to the center tray (3) and is detachably connected to the center tray (3).

5. The polycrystalline cubic boron nitride composite sheet according to claim 4, characterized in that: A central misaligned cavity (10) is formed between the first sheet body (1) and the second sheet body (2) and the corresponding central tray (3), and the extension block (7) is located in the central misaligned cavity (10).

6. The polycrystalline cubic boron nitride composite sheet according to claim 3, characterized in that: The first chip removal channel (8) and the second chip removal channel (9) are arranged obliquely, and the first chip removal channel (8) and the second chip removal channel (9) belonging to the first sheet body (1) and the second sheet body (2) are arranged in a stacked manner.

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