PCD (Poly Crystal Diamond) milling cutter for milling carbon side block

Abstract

The utility model relates to the technical field of milling equipment, in particular to a PCD (Poly Crystal Diamond) milling cutter for milling a carbon side block. The utility model discloses a PCD (Poly Crystal Diamond) milling cutter for milling a carbon side block. The PCD milling cutter comprises a cutter bar and a plurality of blades, the cutter bar comprises a first mounting section, a positioning section and a second mounting section, and the two ends of the positioning section are connected with the first mounting section and the second mounting section respectively. The blade comprises a blade body, a hard alloy substrate layer and a PCD layer. A plurality of installation grooves are formed in the second installation section, and each blade is installed in the corresponding installation groove. And the milling surface on each blade is aligned to the same side surface of each mounting groove, and the milling surface of each blade can face the carbon material to be milled by rotating the cutter bar. According to the design, when one blade is abraded, the milling operation can be continued only by controlling the cutter bar to rotate through a milling machine and enabling the other blade to rotate to the milling position, the blade does not need to be replaced by stopping working, and therefore the working efficiency in the milling process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling equipment, and particularly relates to a PCD milling cutter for milling carbon side blocks. Background Art

[0002] In the process of modern industrial production, carbon materials are widely used in various fields due to their excellent properties. Generally, carbon materials are large in volume. When milling carbon materials, carbon particles will be generated, and high temperatures will be generated when the milling cutters contact and rub against each other during cutting, resulting in greater difficulty in the actual milling process of carbon materials. If traditional carbide milling cutters are used for processing, problems such as easy wear and breakage are likely to occur during the processing, which will affect the tool life, and at the same time, it will also affect the processing progress of carbon materials, thus increasing the processing cost of carbon materials. In addition, the existing milling cutters are directly connected to the milling machine. Coupled with the easy wear and other problems of the existing milling cutters, it is generally necessary to disassemble the milling cutter from the milling machine for replacement after working for 2-3 days. Moreover, the installation and replacement of the existing milling cutters are relatively cumbersome, which will affect the milling efficiency. Content of the Utility Model

[0003] In order to solve the problems in the prior art that traditional carbide milling cutters are prone to wear or breakage during milling, and the replacement method of the existing milling cutters requires disassembling the old milling cutter from the milling machine and then replacing it with a new one, which affects the milling efficiency, the utility model provides a PCD milling cutter for milling carbon side blocks.

[0004] To achieve the above object, the technical solution adopted by the utility model is: a PCD milling cutter for milling carbon side blocks, which includes a tool shank and a plurality of blades. The tool shank includes a first mounting section, a positioning section, and a second mounting section. One end of the positioning section is connected to the first mounting section, and the other end of the positioning section is connected to the second mounting section. A plurality of mounting grooves are formed on the second mounting section, and the plurality of mounting grooves are circumferentially distributed on the second mounting section; each blade is respectively mounted in each mounting groove; and the milling surfaces of each blade are aligned with the same side of each mounting groove. By rotating the tool shank, the milling surfaces of each blade can face the carbon material to be milled; the blade includes a blade body, a cemented carbide base layer, and a PCD layer. A welding groove is provided on one side of the milling surface of the blade body, and the welding groove is integrally recessed from the milling surface into the blade body; the cemented carbide base layer is welded in the welding groove, and the PCD layer is sintered on the side of the cemented carbide base layer away from the milling surface. After sintering, the side of the PCD layer away from the cemented carbide base layer is flush with the milling surface of the blade body.

[0005] As a further improvement of the above solution, the blade body includes an installation part and a milling part. The installation part is inserted into the installation groove and fixedly connected to the second installation section. The milling part is used for milling carbon materials, and the welding groove is arranged on the milling part. On one side of the milling part away from the installation part, there is an arc milling area and an inclined milling area. The arc milling area is integrally arched outwards from the milling part, and the inclined milling area expands outwards from the connection with the arc milling area.

[0006] As a further improvement of the above solution, the outermost end point of the arc milling area away from the installation part and the outermost end point of the inclined milling area away from the installation part are on the same horizontal line.

[0007] As a further improvement of the above solution, the thickness ratio of the PCD layer to the cemented carbide substrate layer is 7:25.

[0008] As a further improvement of the above solution, the blade body is a No. 45 steel blade body, and the cemented carbide substrate layer is a tungsten steel substrate layer.

[0009] As a further improvement of the above solution, the blade body and the cemented carbide substrate layer are connected by high-frequency welding. The current frequency range of the high-frequency welding is 550 kHz to 650 kHz, and the solder is silver-based brazing filler metal or silver-based alloy.

[0010] As a further improvement of the above solution, the second installation section is a cylindrical structure. There are four grooves on the second installation section, and the four grooves are equally spaced along the axial direction of the second installation section. The four grooves are used to divide the second installation section into four arc-shaped protrusions. The number of installation grooves is four, and each installation groove is arranged on each arc-shaped protrusion along the axial direction of the second installation section.

[0011] As a further improvement of the above solution, there are multiple first installation holes on one side of the arc-shaped protrusion, and the multiple first installation holes are arranged along the axial direction of the second installation section. Each first installation hole communicates with the installation groove respectively. There are multiple second installation holes on the installation part, and the second installation holes on the installation part located in the installation groove are respectively aligned with the first installation holes.

[0012] As a further improvement of the above solution, there is a third installation hole on the side of the first installation section away from the positioning section, and the first installation section is connected to the milling machine through the third installation hole.

[0013] Furthermore, the tool bar is integrally processed from No. 45 steel.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1) The utility model is provided with a tool bar, and a plurality of blades are arranged on the tool bar. The milling surfaces of each blade are aligned with the same side of each mounting groove. The purpose of such design is that when one of the blades is worn or broken, only the tool bar needs to be rotated by a milling machine, so that another blade rotates to the milling position. At this time, the milling surface of this blade can directly face the milling area without adjusting the direction of the blade. Therefore, the time for replacing the blade is greatly saved, and the working efficiency during the milling process is improved. In the utility model, when one of the blades is damaged, it is not necessary to disassemble the blade from the milling machine. Only by controlling the milling machine to drive the tool bar to rotate, so that the milling surface of another new blade is aligned with the milling area, the milling operation can be carried out, which can effectively simplify the whole milling operation and improve the working efficiency during the milling process.

[0016] (2) The utility model is provided with an arc-shaped milling area and an inclined milling area on one side of the milling part away from the mounting part. The arc-shaped milling area is integrally arched outwards from the milling part, and the inclined milling area is formed by expanding outwards from the connection with the arc-shaped milling area. The arc-shaped milling area can increase the milling area of the carbon material, so that there is a larger back engagement of cut at the beginning of milling, thereby realizing that when milling the carbon material, the required groove of the carbon material can be milled at one time; at the same time, the inclined milling area is used to mill the fillet or chamfer at the edge of the carbon material when side milling the carbon material. It can be seen that by designing the milling part of the blade body as the above structure in this embodiment, the carbon material can be formed at one time, and the milling efficiency is improved.

[0017] (3) The utility model is provided with a cemented carbide base layer and a PCD layer on the blade body in sequence. The cemented carbide base layer and the PCD layer can improve the strength and hardness of the blade body, improve its wear resistance, and extend its service life. Description of the Drawings

[0018] Figure 1 It is a three-dimensional view of the PCD milling cutter for milling carbon side blocks provided by the utility model.

[0019] Figure 2 It is a structural schematic diagram of the tool bar provided by the utility model.

[0020] Figure 3 It is a structural schematic diagram of the blade provided by the utility model (the PCD layer and the cemented carbide base layer are not welded).

[0021] Figure 4 It is a structural schematic diagram of the blade provided by the utility model.

[0022] Figure 5 It is a front view of the blade provided by the utility model in an enlarged state.

[0023] Figure 6 For the present utility model Figure 1 top view.

[0024] Figure 7 For the present utility model Figure 6 sectional view along A-A.

[0025] In the figure: 1, tool shank; 11, first installation section; 111, third installation hole; 12, positioning section; 13, second installation section; 131, installation groove; 132, groove; 133, arc-shaped protrusion; 134, first installation hole; 2, cutting blade; 21, blade body; 211, milling surface; 212, welding groove; 214, installation part; 215, milling part; 216, arc-shaped milling area; 217, inclined milling area; 22, cemented carbide base layer; 23, PCD layer. Specific embodiments

[0026] Next, in combination with specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0027] In the description of the present utility model, it should be noted that for orientation terms, such as terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model. The terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. The terms "including" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Refer to Figures 1 to 3As shown in the figure, a PCD milling cutter for milling carbon side blocks provided by an embodiment of the present utility model includes a cutter bar 1 and a plurality of blades 2. The cutter bar 1 is integrally processed. The cutter bar 1 includes a first mounting section 11, a positioning section 12, and a second mounting section 13. One end of the positioning section 12 is connected to the first mounting section 11, and the other end of the positioning section 12 is connected to the second mounting section 13. The first mounting section 11 is used to connect with a milling machine. The positioning section 12 can position the cutter bar 1 when the first mounting section 11 is connected to the milling machine, thereby improving the installation speed between the cutter bar 1 and the milling machine. A plurality of mounting grooves 131 are formed on the second mounting section 13. The plurality of mounting grooves 131 are circumferentially distributed on the second mounting section 13. The blades 2 are fixedly installed on the cutter bar 1 through the mounting grooves 131. When the plurality of blades 2 are all installed on the second mounting section 13 through the mounting grooves 131, the milling surfaces 211 of each blade 2 are aligned with the same side of each mounting groove 131. The purpose of this design is that when one of the blades 2 is worn or broken, only by controlling the cutter bar 1 to rotate through the milling machine, another blade 2 can be rotated to the milling position. At this time, the milling surface 211 of this blade 2 can directly face the milling area without adjusting the direction of the blade 2, thus greatly saving the time for replacing the blade 2 and improving the working efficiency during the milling process. In the present utility model, when one of the blades 2 is damaged, it is not necessary to disassemble the blade 2 from the milling machine. Only by controlling the milling machine to drive the cutter bar 1 to rotate, so that the milling surface 211 of another new blade 2 is aligned with the milling area, the milling operation can be carried out, which can effectively simplify the entire milling operation and improve the working efficiency during the milling process.

[0029] Please refer to Figure 1 and Figure 2As shown, the second installation section 13 is used to install a plurality of blades 2, and the second installation section 13 is of a cylindrical structure. In this embodiment, four grooves 132 are provided on the second installation section 13, and the four grooves 132 are evenly distributed along the axial direction of the second installation section 13. The four grooves 132 are used to divide the second installation section 13 into four arc-shaped protrusions 133. During the actual milling process, since the shape of the arc-shaped protrusion 133 is an arc structure, it can avoid stress concentration during milling, so that the blade 2 will not break during milling, thereby realizing the extension of the service life of the PCD milling cutter. An installation groove 131 is provided on each arc-shaped protrusion 133, and the installation groove 131 penetrates the arc-shaped protrusion 133 along the axial direction of the second installation section 13. The installation groove 131 is used to fix the blade 2. A plurality of first installation holes 134 are provided on the arc-shaped protrusion 133, and the plurality of first installation holes 134 are arranged along the axial direction of the second installation section 13. Each first installation hole 134 communicates with the installation groove 131 respectively. A plurality of second installation holes are provided on the installation portion 214, and each second installation hole corresponds to the first installation hole 134 respectively. During the actual installation process, after inserting the installation portion 214 into the installation groove 131, each second installation hole is aligned with each first installation hole 134, and then the blade 2 can be fixed in the installation groove 131 by sequentially passing bolts through the first installation hole 134 and the second installation hole. In this embodiment, by setting the structure between the blade 2 and the tool shank 1 to be detachable, it is possible to fix different types of blades 2 with the same tool shank 1, so that during actual milling, only by replacing different blades 2 can milling operations be performed on different materials, greatly improving the practicability of the entire PCD milling cutter.

[0030] In this embodiment, the number of the first installation holes 134 on each arc-shaped protrusion 133 is five. By setting five first installation holes 134, the blade 2 can be effectively fixed, and the stability of its connection can be improved.

[0031] In this embodiment, the number of blades 2 is four, and the four blades 2 are respectively installed in the installation grooves 131. The included angle between every two adjacent blades 2 is 90°. Therefore, during the actual milling process, if one of the blades 2 is damaged, only by rotating the PCD milling cutter 90° by a milling machine can a new blade 2 be replaced to continue the milling operation.

[0032] In this embodiment, by arranging a tool shank 1 between the blade 2 and the milling machine, the tool shank 1 can absorb a part of the vibration generated by the blade 2 during milling while ensuring the connection strength, effectively preventing the loosening of the connection between the blade body 21 and the tool shank 1 through bolts, thereby improving the vibration performance of the blade 2. It can be understood that in this embodiment, the tool shank 1 can be integrally processed from 45# steel. By selecting 45# steel, it can absorb the impact encountered by the blade 2 during milling while ensuring the positioning accuracy. Thus, while effectively improving the impact resistance of the entire PCD milling cutter, it can also reduce the manufacturing cost of the tool shank 1 by approximately 20% compared to using other expensive alloy materials for manufacturing, thereby reducing the preparation cost of the entire PCD milling cutter.

[0033] Please refer to Figures 3 to 5 As shown, the blade 2 includes a blade body 21, a cemented carbide base layer 22, and a PCD layer 23. A welding groove 212 is provided on one side of the milling surface 211 of the blade body 21. The welding groove 212 is integrally recessed from the milling surface 211 into the blade body 21; the cemented carbide base layer 22 is welded in the welding groove 212, and the PCD layer 23 is covered on the side of the cemented carbide base layer 22 away from the milling surface 211 by sintering. The side of the sintered PCD layer 23 away from the cemented carbide base layer 22 is flush with the milling surface 211 of the blade body 21. By keeping the sintered PCD layer 23 flush with the milling surface 211 of the blade 2, the milling surface 211 of the prepared composite blade 2 is flat, so that the carbon material obtained after milling the carbon material by the prepared composite blade 2 is more flat, thereby improving the milling accuracy of the PCD milling cutter for the carbon material.

[0034] In this embodiment, since the material of the PCD layer 23 has very high hardness, during milling, it can greatly ensure that there will be no situation of missed milling or immovable milling, improving the stability during the milling process.

[0035] Through the milling experiment on the PCD milling cutter of this application, its service life is generally about 30 days, while the life of the existing milling cutter is generally 2 - 3 days. Thus, it can be seen that the service life of the PCD milling cutter in this utility model is much longer than that of the milling cutter in the prior art. Therefore, using the PCD milling cutter of this utility model for milling operations can greatly reduce the frequency of replacing the milling cutter, thereby improving the milling efficiency.

[0036] In addition, when side milling carbon materials, high temperatures will be generated due to the intense friction of carbon particles. After a period of processing, if the upper PCD layer 23 fails due to high-temperature melting or excessive wear, the lower cemented carbide substrate layer 22 can also undertake part of the milling task before replacing the new blade 2, thus ensuring that the entire blade 2 has good milling efficiency during the milling process.

[0037] It can be understood that the blade body 21 can be a No. 45 steel blade body 21, and the cemented carbide substrate layer 22 can be a tungsten steel substrate layer. In this embodiment, the cemented carbide substrate layer 22 and the PCD layer 23 can be combined into a composite layer, which has the same size and structure, and the difference lies in the thickness. Therefore, in the actual operation process, the PCD layer 23 can be sintered on the cemented carbide substrate layer 22 first to combine the two into a composite layer, and then the composite layer is connected to the blade body 21 by high-frequency welding. The current frequency range of the high-frequency welding is 550 kHz to 650 kHz, and the solder is a silver-based brazing filler metal or a silver-based alloy. The temperature of the high-frequency welding is between 690 °C and 700 °C. The purpose of choosing the high-frequency welding method in this embodiment is that the cemented carbide substrate layer 22 is a tungsten alloy substrate layer, which is composed of uneven cobalt and tungsten carbide. The temperature resistance of the PCD layer 23 is about 700 °C. Exceeding this temperature will reduce its wear resistance and affect its life. Therefore, in this embodiment, the temperature of the high-frequency welding is between 690 °C and 700 °C, and a silver-based brazing filler metal or a silver-based alloy is used as the solder, and the welding firmness can be achieved between 690 °C and 700 °C. Secondly, the shear strength of the PCD tool is affected by the microstructure of the brazing seam. If the spreading speed of the solder in the brazing seam is too fast, it will lead to uneven structure after welding and reduce its shear strength. In addition, if ordinary welding methods are used, the temperature gradient and uneven heating during welding need to be considered, which will cause the influence of welding residual stress. These influences will cause the occurrence of de-welding or cracking of the PCD layer 23 during the welding process. Therefore, considering the above factors, in this embodiment, the composite layer and the blade body 21 are connected by high-frequency induction welding. The advantage of choosing the high-frequency induction welding method is that it can weld quickly, and the positioning is more convenient and accurate than other welding methods. In addition, the purpose of choosing silver alloy as the solder is that the thickness of this solder is small, and the influence on the thickness of the blade body 21 after welding is small. In addition, using silver alloy as the solder can effectively improve the welding firmness between the composite layer and the blade body 21 and avoid the occurrence of de-welding between the composite layer and the blade body 21.

[0038] In this embodiment, the thickness ratio of the PCD layer 23 to the cemented carbide substrate layer 22 can be 7:25. Specifically, the thickness of the PCD layer 23 can be 0.7 mm, and the thickness of the cemented carbide substrate layer 22 can be 2.5 mm.

[0039] It can be understood that the PCD milling cutter in this embodiment is mainly used for milling carbon materials, but it can also mill other materials. When milling carbon materials, since a large amount of milling chips are not generated during the milling process, a chip evacuation groove is not provided in the PCD milling cutter of this embodiment.

[0040] In this embodiment, the material of the blade body 21 can also be tungsten steel, Q235 or Q2345. Among them, tungsten steel can be selected when the required area of the blade body 21 is small, and one of 45 steel, Q2345 or Q235 can be selected when the required area of the blade body 21 is large.

[0041] In this embodiment, please refer to Figure 5 , the blade body 21 includes a mounting portion 214 and a milling portion 215. The mounting portion 214 is inserted into the mounting groove 131 and fixedly connected to the second mounting section 13. The milling portion 215 is used for milling carbon materials, and the welding groove 212 is provided on the milling portion 215. On the side of the milling portion 215 away from the mounting portion 214, there are provided an arc-shaped milling area 216 and an inclined milling area 217. The arc-shaped milling area 216 integrally arches outwards from the milling portion 215, and the inclined milling area 217 expands outwards from the connection with the arc-shaped milling area 216. The arc-shaped milling area 216 can increase the milling area 211 of the carbon material, so that there is a larger depth of cut at the beginning of milling, thereby realizing that when milling carbon materials, the required groove 132 of the carbon material can be milled out at one time; at the same time, the inclined milling area 217 is used for milling the fillet or chamfer at the edge of the carbon material when side-milling the carbon material. It can be seen that in this embodiment, by designing the milling portion 215 of the blade body 21 as the above structure, the carbon material can be formed in one step, improving the milling efficiency.

[0042] Furthermore, the outermost end point of the arc-shaped milling area 216 away from the mounting portion 214 and the outermost end point of the inclined milling area 217 away from the mounting portion 214 are on the same horizontal line. Please refer to Figure 5 As shown, when the above two end points are on the same horizontal line, when milling the carbon block with the blade body 21, positioning can be carried out according to the above two end points, so as to ensure that the arc-shaped milling area 216 and the inclined milling area 217 can mill the carbon block on the same plane, thereby improving the flatness of the milled carbon block.

[0043] Further, an arc line is provided on the outermost side of the arc milling area 216, and an inclined line is provided on the outermost side of the inclined milling area 217. There is a smooth transition between the arc line and the inclined line. By setting a smooth transition between the arc line and the inclined line, the stress concentration in the part from the arc line to the inclined line can be reduced, thereby improving the welding strength between the composite layer and the blade body 21 and avoiding fracture between the composite layer and the blade body 21.

[0044] Please refer to FIGS. 3 and Figure 4 As shown, the welding groove 212 is provided on the outermost side of the end of the milling part 215 far from the mounting part 214. The shape of the composite layer composed of the PCD layer 23 and the cemented carbide base layer 22 is the same as that of the welding groove 212, so that the composite layer can be installed in the welding groove 212 by high-frequency welding.

[0045] In this embodiment, please refer to Figure 6 and Figure 7 As shown, the first mounting section 11 can be a frustum structure, the larger-diameter end of which is connected to the positioning section 12. A third mounting hole 111 is provided in the first mounting section 11, and the first mounting section 11 is connected to the milling machine through the third mounting hole 111.

[0046] Further, the central axes of the third mounting hole 111 and the cylindrical second mounting section 13 coincide, so that when the milling machine controls the second mounting section 13 to operate through the first mounting section 11, it can ensure that the forces on each part of the second mounting section 13 are uniform, thereby improving the stability of the blade 2 during the milling process.

[0047] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCD milling cutter for milling carbon side blocks, characterized in that It includes: A tool shank (1), the tool shank (1) includes a first mounting section (11), a positioning section (12) and a second mounting section (13), one end of the positioning section (12) is connected to the first mounting section (11), the other end of the positioning section (12) is connected to the second mounting section (13), and a plurality of mounting grooves (131) are formed on the second mounting section (13), and the plurality of mounting grooves (131) are circumferentially distributed on the second mounting section (13); And a plurality of blades (2), each blade (2) is respectively installed in each mounting groove (131); and the milling surfaces (211) on each blade (2) are all aligned with the same side of each mounting groove (131), and by rotating the tool shank (1), the milling surfaces (211) of each blade (2) can all face the carbon material to be milled; the blade (2) includes a blade body (21), a cemented carbide base layer (22) and a PCD layer (23), a welding groove (212) is provided on one side of the milling surface (211) of the blade body (21), and the welding groove (212) is integrally recessed from the milling surface (211) into the blade body (21); the cemented carbide base layer (22) is welded in the welding groove (212), and the PCD layer (23) is sintered on the side of the cemented carbide base layer (22) away from the milling surface (211), and the side of the sintered PCD layer (23) away from the cemented carbide base layer (22) is flush with the milling surface (211) of the blade body (21).

2. The PCD milling cutter for milling carbon side blocks according to claim 1, wherein The blade body (21) includes a mounting portion (214) and a milling portion (215), the mounting portion (214) is inserted into the mounting groove (131) and fixedly connected to the second mounting section (13), the milling portion (215) is used for milling the carbon material, and the welding groove (212) is arranged on the milling portion (215); an arc milling area (216) and an inclined milling area (217) are provided on the side of the milling portion (215) away from the mounting portion (214), the arc milling area (216) is integrally arched outwards from the milling portion (215), and the inclined milling area (217) expands outwards from the connection with the arc milling area (216).

3. The PCD milling cutter for milling carbon side blocks according to claim 2, wherein The outermost end point of the arc milling area (216) away from the mounting portion (214) and the outermost end point of the inclined milling area (217) away from the mounting portion (214) are on the same horizontal line.

4. The PCD milling cutter for milling carbon side blocks according to claim 1, characterized in that, The thickness ratio of the PCD layer (23) to the thickness of the cemented carbide base layer (22) is 7:

25.

5. The PCD milling cutter for milling carbon side blocks according to claim 1, characterized in that, The blade body (21) is a No. 45 steel blade body (21), and the cemented carbide base layer (22) is a tungsten steel base layer.

6. The PCD milling cutter for milling carbon side blocks as described in claim 1, characterized in that, The blade body (21) and the cemented carbide base layer (22) are connected by high-frequency welding, the current frequency range of the high-frequency welding is 550 kHz to 650 kHz, and the solder is silver-based brazing filler metal or silver-based alloy.

7. The PCD milling cutter for milling carbon side blocks according to claim 2, characterized in that, The second installation section (13) is of a cylindrical structure. Four grooves (132) are provided on the second installation section (13). The four grooves (132) are equally spaced along the axial direction of the second installation section (13). The four grooves (132) are used to divide the second installation section (13) into four arc-shaped protrusions (133). The number of the installation grooves (131) is four, and each installation groove (131) is arranged on each arc-shaped protrusion (133) along the axial direction of the second installation section (13).

8. The PCD milling cutter for milling carbon side blocks according to claim 7, wherein A plurality of first installation holes (134) are provided on one side of the arc-shaped protrusion (133). The plurality of first installation holes (134) are arranged along the axial direction of the second installation section (13), and each installation hole communicates with the installation groove (131) respectively; a plurality of second installation holes are provided on the installation part (214). The second installation holes on the installation part (214) located in the installation groove (131) are respectively aligned with the first installation holes (134).

9. The PCD milling cutter for milling carbon side blocks according to claim 1, wherein An installation hole three (111) is provided on one side of the first installation section (11) away from the positioning section (12). The first installation section (11) is connected to a milling machine through the installation hole three (111).

10. The PCD milling cutter for milling carbon side blocks according to claim 1, characterized in that, The tool bar (1) is integrally processed from 45 steel.

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