High heat dissipation type PCBN cutter for high speed machining

Abstract

This utility model relates to the field of PCBN cutting tools, and more particularly to a high-heat-dissipation PCBN cutting tool for high-speed machining. It includes a base, a mounting hole starting from the center of the base, multiple first heat dissipation grooves starting vertically within the mounting hole, mounting slots on the sides of the base for mounting a cutting head, multiple second heat dissipation grooves on each side of the base, and multiple third heat dissipation grooves on the upper surface of the base. This utility model has the advantage of excellent heat dissipation for PCBN cutting tools.

Description

Technical Field

[0001] This utility model relates to the field of PCBN cutting tools, and in particular to a high-heat-dissipation PCBN cutting tool for high-speed machining. Background Technology

[0002] PCBN (polycrystalline cubic boron nitride) cutting tools are superhard cutting tools synthesized under high temperature and pressure. Their hardness is second only to diamond, and they are widely used in the precision machining of high-hardness materials. PCBN tools also possess superhardness, wear resistance, good thermal conductivity, and good chemical stability. Structural types include integral sintered type and composite welded type. The composite welded type refers to mounting the PCBN tool tip on a cemented carbide substrate, balancing toughness and wear resistance. Due to the characteristics of PCBN tools, it is inconvenient to use coolant for cooling during cutting operations. Therefore, it is necessary to design a PCBN tool with efficient heat dissipation to maintain its working stability. Summary of the Invention

[0003] The purpose of this invention is to provide a high-heat-dissipation PCBN tool for high-speed machining, which has the advantage of good heat dissipation.

[0004] A high-heat-dissipation PCBN tool for high-speed machining includes a base, a mounting hole starting from the center of the base, multiple first heat dissipation grooves starting vertically in the mounting hole, mounting grooves provided on the side of the base, a tool head provided in the mounting grooves, multiple second heat dissipation grooves on each side of the base, and multiple third heat dissipation grooves on the upper surface of the base.

[0005] Preferably, the end of the cutter head near the mounting groove has a serrated surface, and the mounting groove is provided with a serrated surface corresponding to the cutter head.

[0006] Preferably, the first heat dissipation groove, the second heat dissipation groove, and the third heat dissipation groove are all V-shaped grooves.

[0007] Preferably, there are six first heat dissipation slots.

[0008] Preferably, the mounting hole has circular grooves at both the upper and lower ends.

[0009] 1. This utility model utilizes the first heat dissipation groove, the second heat dissipation groove and the third heat dissipation groove to increase the heat dissipation area of ​​the base, thereby increasing the heat dissipation efficiency of the PCBN tool and improving the heat dissipation effect of the PCBN tool.

[0010] 2. In this utility model, the cutter head and the base are in serrated contact, which increases the contact area and thus improves the heat exchange effect between the cutter head and the base. Attached Figure Description

[0011] Figure 1This is a three-dimensional structural diagram of a high-heat-dissipation PCBN cutting tool for high-speed machining, according to this utility model.

[0012] Figure 2 This is a front view schematic diagram of a high-heat-dissipation PCBN cutting tool for high-speed machining according to this utility model.

[0013] Figure 3 This is a top view of a high-heat-dissipation PCBN cutting tool for high-speed machining, according to this utility model.

[0014] In the diagram: 1. Base; 2. Cutting head; 3. Mounting hole; 4. First heat dissipation groove; 5. Circular groove; 6. Second heat dissipation groove; 7. Third heat dissipation groove. Specific Implementation

[0015] The present invention will be further described below with reference to specific embodiments. Please refer to the following description. Figures 1 to 3 :

[0016] Example 1: A high-heat-dissipation PCBN tool for high-speed machining includes a base 1 for mounting tool heads 2. The base 1 is generally rhomboid or triangular in shape. Two to three tool heads 2 are usually mounted on the base 1. There is a mounting hole 3 at the center of the base 1 for mounting the base 1 onto the tool holder. There are multiple first heat dissipation grooves 4 vertically inside the mounting hole 3. The first heat dissipation grooves 4 increase the heat dissipation area of ​​the mounting hole 3 and improve the heat dissipation efficiency of the mounting hole 3.

[0017] The base 1 has a mounting groove on its side, and a cutting head 2 is installed in the mounting groove. The cutting head 2 is generally fixedly connected to the base 1 by welding. Multiple second heat dissipation grooves 6 are opened on the side of the base 1, and multiple third heat dissipation grooves 7 are opened on the upper surface of the base 1. The second heat dissipation grooves 6 and the third heat dissipation grooves 7 are used to increase the heat dissipation area of ​​the side and the upper surface of the base 1, respectively, thereby improving the heat dissipation effect.

[0018] Example 2: A high-heat-dissipation PCBN tool for high-speed machining includes a base 1 for mounting tool heads 2. The base 1 is generally rhomboid or triangular in shape. Two to three tool heads 2 are usually mounted on the base 1. There is a mounting hole 3 starting from the center of the base 1. The mounting hole 3 is used to mount the base 1 onto the tool holder. There are six first heat dissipation grooves 4 vertically starting inside the mounting hole 3. The first heat dissipation grooves 4 increase the heat dissipation area of ​​the mounting hole 3 and improve the heat dissipation efficiency of the mounting hole 3. Circular grooves 5 are opened at both the upper and lower ends of the mounting hole 3.

[0019] The base 1 has a mounting groove on its side, and a cutter head 2 is installed in the mounting groove. The cutter head 2 is generally fixed to the base 1 by welding. The end of the cutter head 2 near the mounting groove has a serrated surface. The mounting groove has a serrated surface corresponding to the cutter head 2. The cutter head 2 and the base 1 are in contact with each other by the serrated surface, which increases the contact area and improves the heat exchange effect between the cutter head 2 and the base 1, making it easier to quickly conduct heat to the larger base 1 for heat dissipation.

[0020] Multiple second heat dissipation grooves 6 are provided on the sides of the base 1, and multiple third heat dissipation grooves 7 are provided on the upper surface of the base 1. The second heat dissipation grooves 6 and the third heat dissipation grooves 7 are used to increase the heat dissipation area of ​​the sides and the upper surface of the base 1, respectively, thereby improving the heat dissipation effect. The first heat dissipation groove 4, the second heat dissipation groove 6 and the third heat dissipation groove 7 are all V-shaped grooves. Compared with right-angle grooves, V-shaped grooves reduce right-angle stress, and the base 1 has better structural strength.

[0021] The working principle is as follows:

[0022] The base 1 is fixed to the tool holder with bolts. When the tool is working, the high temperature generated by cutting is transferred to the base 1 through the tool head 2. The tool head 2 and the base 1 are in serrated contact to increase the contact area, thereby improving the heat exchange effect between the tool head 2 and the base 1. The first heat dissipation groove 4, the second heat dissipation groove 6 and the third heat dissipation groove 7 on the base 1 increase the heat dissipation area of ​​the base 1, thereby increasing the heat dissipation efficiency of the PCBN tool and improving the heat dissipation effect of the PCBN tool.

[0023] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high-heat-dissipation PCBN cutting tool for high-speed machining, characterized in that: It includes a base (1), with a mounting hole (3) starting from the center of the base (1), and multiple first heat dissipation grooves (4) starting vertically in the mounting hole (3). The base (1) has mounting grooves on its side, with a cutting head (2) in the mounting grooves. Multiple second heat dissipation grooves (6) are opened on the side of the base (1), and multiple third heat dissipation grooves (7) are opened on the upper surface of the base (1).

2. The high-heat-dissipation PCBN cutting tool for high-speed machining as described in claim 1, characterized in that: The end of the cutter head (2) near the mounting groove is a sawtooth-shaped surface, and the mounting groove is provided with a sawtooth-shaped surface corresponding to the cutter head (2).

3. The high-heat-dissipation PCBN cutting tool for high-speed machining as described in claim 1, characterized in that: The first heat dissipation groove (4), the second heat dissipation groove (6) and the third heat dissipation groove (7) are all V-shaped grooves.

4. The high-heat-dissipation PCBN cutting tool for high-speed machining as described in claim 1, characterized in that: The first heat dissipation slot (4) has 6 slots.

5. A high-heat-dissipation PCBN cutting tool for high-speed machining as described in claim 1, characterized in that: The mounting hole (3) has circular grooves (5) at both the upper and lower ends.

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