High-speed high-precision hard alloy coating milling cutter

Abstract

The utility model relates to the technical field of milling cutters, and discloses a high-speed high-precision hard alloy coating milling cutter which comprises a milling cutter body, a cutter bar, a fixing mechanism and a heat dissipation mechanism, the fixing mechanism is used for fixedly connecting the milling cutter body and the cutter bar, the fixing mechanism comprises a connecting block, the connecting block is integrally formed at the end, away from the cutter head, of the milling cutter body, and a connecting groove is formed in one end of the cutter bar. The connecting block at one end of the milling cutter body is connected with the connecting groove in one end of the cutter bar in an inserted mode, then a screw penetrates through the first fixing hole and the second fixing hole, so that the milling cutter body and the cutter bar are fixedly connected, cooling liquid can be guided into the connecting sleeve through the fixing pipe, and the cooling liquid can be guided into the heat dissipation groove through the liquid guide groove; and then the liquid is discharged through the liquid discharge hole formed in the milling groove of the milling cutter body, so that cuttings and heat generated in the cutting process can be quickly discharged, and the heat dissipation performance and the cutting efficiency of the cutter are improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically to high-speed, high-precision carbide-coated milling cutters. Background Technology

[0002] In the field of machining, milling cutters are an important cutting tool whose performance directly affects machining efficiency and quality. With the continuous development of industrial technology, the requirements for milling cutters are becoming increasingly stringent.

[0003] According to the authorized announcement number CN217370625U, a high-precision anti-detachment carbide end mill is disclosed, including a cutter body and a cutter holder. The cutter body is detachably connected to the cutter holder. The end face of the cutter holder has an axially formed cutting groove for the lower end of the cutter body to enter. The end face of the cutter holder has four positioning grooves arranged in a circular array. The outer peripheral wall of the cutter body has four positioning blocks that correspond one-to-one with the positioning grooves. The bottom of the positioning blocks has a wedge-shaped surface.

[0004] In the process of realizing this utility model, the inventors discovered that at least the following problems in the prior art have not been solved. The above-mentioned case uses the combination of structures such as cutting edge groove, positioning groove, positioning block, wedge surface, inner edge groove and pad block to facilitate the replacement of milling cutter head. However, during use, the milling cutter generates a large amount of debris and heat. These debris are easy to accumulate in the milling groove of the cutter head, affecting the accuracy of the cutter head and also affecting the heat dissipation of the cutter head, thus affecting the service life of the cutter head.

[0005] Therefore, we propose a high-speed, high-precision carbide-coated end mill that can quickly remove chips and heat generated during the cutting process. Utility Model Content

[0006] The purpose of this invention is to provide a high-speed, high-precision carbide-coated end mill, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-speed, high-precision carbide-coated end mill, comprising a cutter body and a cutter shank, wherein the outer side of the cutter body is provided with a carbide coating, and further comprising a fixing mechanism and a heat dissipation mechanism; the fixing mechanism is used for fixing the cutter body and the cutter shank, the fixing mechanism comprising a connecting block, the connecting block being integrally formed at the end of the cutter body away from the cutter head, a connecting groove being provided at one end of the cutter shank, the connecting block at one end of the cutter body being inserted into the connecting groove at one end of the cutter shank, first fixing holes being symmetrically provided on both sides of the connecting block, and second fixing holes being symmetrically provided on the inner walls of both sides of the connecting groove, the cutter body and the cutter shank being fixedly connected by screws passing through the first fixing holes and the second fixing holes; the heat dissipation mechanism is used for heat dissipation of the cutter body, the heat dissipation mechanism comprising a connecting sleeve, the connecting sleeve being rotatably connected to the outer side of the cutter shank through a sealed bearing, a liquid guiding groove being provided on the inner wall of the top of the connecting groove, a heat dissipation groove being vertically provided in the middle of the top of the connecting block, and drain holes being uniformly provided on the inner wall of the groove of the cutter body.

[0008] As an optional solution to the technical solution of this application, the liquid guiding groove is T-shaped, and both ends of the liquid guiding groove are connected to the connecting sleeve.

[0009] As an optional solution to the technical solution of this application, the heat dissipation groove extends into the interior of the milling cutter body, and the drain hole is connected to the heat dissipation groove.

[0010] As an optional solution to the technical solution of this application, a fixing pipe is fixedly installed on one side of the connecting sleeve, and the fixing pipe is connected to the liquid guiding tank through the connecting sleeve.

[0011] As an optional solution to the technical solution of this application, a sealing ring is provided on the inner wall of the top of the connecting groove, and the top of the connecting block is in contact with the sealing ring.

[0012] As an optional solution to the technical solution of this application, the dimensions of the connecting block and the connecting groove are matched, and the first fixing hole corresponds to the second fixing hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the connecting block at one end of the milling cutter body is inserted into the connecting groove at one end of the tool holder, and then the milling cutter body and the tool holder are fixedly connected by screws passing through the first fixing hole and the second fixing hole. Coolant can be introduced into the connecting sleeve through the fixing tube, and into the heat dissipation groove through the liquid guide groove. Then it is discharged through the drain hole opened in the milling groove of the milling cutter body. This can realize the rapid discharge of chips and heat generated during the cutting process, thereby improving the heat dissipation performance and cutting efficiency of the tool. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is the front view of the high-speed, high-precision carbide-coated milling cutter of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the high-speed, high-precision carbide-coated milling cutter of this utility model.

[0017] In the figure: 1. Milling cutter body; 11. Tool holder; 12. Connecting block; 13. Connecting groove; 14. First fixing hole; 15. Second fixing hole; 16. Screw; 17. Carbide coating; 2. Liquid guiding groove; 21. Heat dissipation groove; 22. Drain hole; 23. Sealing ring; 24. Connecting sleeve; 25. Fixing tube. Detailed Implementation

[0018] Please see Figures 1-2 This utility model provides a technical solution: a high-speed, high-precision carbide-coated end mill, including an end mill body 1 and a cutter shank 11. The outer side of the end mill body 1 is provided with a carbide coating 17. It also includes a fixing mechanism and a heat dissipation mechanism. The fixing mechanism is used for the fixed connection between the end mill body 1 and the cutter shank 11. The fixing mechanism includes a connecting block 12, which is integrally formed at the end of the end mill body 1 away from the cutter head. A connecting groove 13 is opened at one end of the cutter shank 11. The connecting block 12 at one end of the end mill body 1 is inserted into the connecting groove 13 at one end of the cutter shank 11. The dimensions of the connecting block 12 and the connecting groove 13 are matched. The two sides of the connecting block 12 are symmetrically provided with first fixing holes 14. The inner walls of the two sides of the connecting groove 13 are symmetrically provided with second fixing holes 15. The first fixing holes 14 and the second fixing holes 15 correspond to each other. The end mill body 1 and the cutter shank 11 are fixedly connected by screws 16 passing through the first fixing holes 14 and the second fixing holes 15.

[0019] In this technical solution, the connecting block 12 at one end of the milling cutter body 1 is inserted into the connecting groove 13 at one end of the cutter shank 11, and then the milling cutter body 1 and the cutter shank 11 are fixedly connected by screws 16 passing through the first fixing hole 14 and the second fixing hole 15, which facilitates the replacement of the milling cutter body 1.

[0020] In this embodiment, the heat dissipation mechanism is used for heat dissipation of the milling cutter body 1. The heat dissipation mechanism includes a connecting sleeve 24, which is rotatably connected to the outer side of the cutter shank 11 through a sealed bearing. A liquid guiding groove 2 is provided on the inner wall of the top of the connecting groove 13. The liquid guiding groove 2 is T-shaped. A heat dissipation groove 21 is vertically provided in the middle of the top of the connecting block 12. The heat dissipation groove 21 extends into the interior of the milling cutter body 1. Drainage holes 22 are evenly provided on the inner wall of the milling groove of the milling cutter body 1. The drainage holes 22 are connected to the heat dissipation groove 21. A sealing ring 23 is provided on the inner wall of the top of the connecting groove 13. The top of the connecting block 12 is in contact with the sealing ring 23.

[0021] In this technical solution, when the connecting block 12 is fixed inside the connecting groove 13, the sealing ring 23 can improve the connection sealing between the connecting block 12 and the connecting groove 13, so that the liquid guiding groove 2 opened at the top of the connecting groove 13 is connected to the heat dissipation groove 21 opened in the middle of the connecting block 12. The coolant in the liquid guiding groove 2 can be guided into the heat dissipation groove 21 and then discharged through the drain hole 22 opened in the milling groove of the milling cutter body 1. This can realize the rapid discharge of chips and heat generated during the cutting process, thereby improving the heat dissipation performance and cutting efficiency of the tool.

[0022] In this embodiment, the two ends of the liquid guiding groove 2 are connected to the connecting sleeve 24, and a fixing pipe 25 is fixedly installed on one side of the connecting sleeve 24. The fixing pipe 25 is connected to the liquid guiding groove 2 through the connecting sleeve 24.

[0023] In this technical solution, the fixed tube 25 and the connecting sleeve 24 are fixed by the corresponding bracket. Since the upper and lower ends of the connecting sleeve 24 are rotatably connected to the cutter bar 11 through the sealed bearing, the rotation of the cutter bar 11 is not affected. Since the two ends of the liquid guiding groove 2 are connected to the connecting sleeve 24, the end of the fixed tube 25 away from the connecting sleeve 24 is connected to the outlet of the corresponding coolant pump, so that the coolant can be introduced into the connecting sleeve 24 and then flow into the liquid guiding groove 2.

[0024] When using a high-speed, high-precision carbide-coated end mill, the connecting block 12 at one end of the end mill body 1 is inserted into the connecting groove 13 at one end of the cutter shank 11. Then, the screw 16 passes through the first fixing hole 14 and the second fixing hole 15 to fix the end mill body 1 and the cutter shank 11. When the connecting block 12 is fixed inside the connecting groove 13, the sealing ring 23 can improve the sealing performance of the connection between the connecting block 12 and the connecting groove 13, so that the liquid guiding groove 2 at the top of the connecting groove 13 is connected to the heat dissipation groove 21 in the middle of the connecting block 12. The fixing tube 25 and the connecting sleeve 24 are fixed by the corresponding bracket. The end of the fixing tube 25 away from the connecting sleeve 24 is connected to the outlet of the corresponding coolant pump, so that the coolant can be introduced into the connecting sleeve 24, and then flow into the liquid guiding groove 2 inside the cutter shank 11 and the heat dissipation groove 21 inside the end mill body 1. Finally, it is discharged through the drain hole 22 opened in the milling groove of the end mill body 1, which can realize the rapid discharge of chips and heat generated during the cutting process, thereby improving the heat dissipation performance and cutting efficiency of the tool.

Claims

1. A high-speed, high-precision carbide-coated end mill, comprising an end mill body (1) and a cutter shank (11), wherein the outer side of the end mill body (1) is provided with a carbide coating (17), characterized in that, It also includes a fixing mechanism and a heat dissipation mechanism; The fixing mechanism is used for the fixed connection between the milling cutter body (1) and the cutter shank (11). The fixing mechanism includes a connecting block (12). The connecting block (12) is integrally formed on the end of the milling cutter body (1) away from the cutter head. A connecting groove (13) is provided at one end of the cutter shank (11). The connecting block (12) at one end of the milling cutter body (1) is inserted into the connecting groove (13) at one end of the cutter shank (11). A first fixing hole (14) is symmetrically provided on both sides of the connecting block (12). A second fixing hole (15) is symmetrically provided on the inner wall of both sides of the connecting groove (13). The milling cutter body (1) and the cutter shank (11) are fixedly connected by screws (16) passing through the first fixing hole (14) and the second fixing hole (15). Heat dissipation mechanism: for heat dissipation of the milling cutter body (1), the heat dissipation mechanism includes a connecting sleeve (24), the connecting sleeve (24) is rotatably connected to the outside of the cutter bar (11) through a sealed bearing, a liquid guiding groove (2) is provided on the inner wall of the top of the connecting groove (13), a heat dissipation groove (21) is vertically provided in the middle of the top of the connecting block (12), and drain holes (22) are uniformly provided on the inner wall of the milling groove of the milling cutter body (1).

2. The high-speed, high-precision carbide-coated end mill according to claim 1, characterized in that: The liquid guiding groove (2) is T-shaped, and both ends of the liquid guiding groove (2) are connected to the connecting sleeve (24).

3. The high-speed, high-precision carbide-coated end mill according to claim 1, characterized in that: The heat dissipation groove (21) extends into the interior of the milling cutter body (1), and the drain hole (22) is connected to the heat dissipation groove (21).

4. The high-speed, high-precision carbide-coated end mill according to claim 1, characterized in that: A fixing tube (25) is fixedly installed on one side of the connecting sleeve (24), and the fixing tube (25) is connected to the liquid guide groove (2) through the connecting sleeve (24).

5. The high-speed, high-precision carbide-coated end mill according to claim 1, characterized in that: A sealing ring (23) is provided on the inner wall of the top of the connecting groove (13), and the top of the connecting block (12) is in contact with the sealing ring (23).

6. The high-speed, high-precision carbide-coated end mill according to claim 1, characterized in that: The dimensions of the connecting block (12) and the connecting groove (13) are matched, and the first fixing hole (14) corresponds to the second fixing hole (15).

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