Three-edge PCD milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to a three-edge PCD milling cutter, and aims to solve the problems that the temperature of the milling cutter is too high and the machining effect on a workpiece is influenced due to the fact that the milling cutter can generate heat during high-speed operation and cannot be cooled during use when the conventional milling cutter is used. The tail end of the fixed cutter handle is connected with a three-edge milling cutter, and a cooling mechanism for cooling the milling cutter is arranged in the fixed cutter handle; the cooling mechanism comprises a liquid storage cavity, and the liquid storage cavity is formed in the fixed knife handle. According to the heat exchange liquid stored in the liquid storage cavity, heat is transferred into the heat exchange liquid, the heat conduction rod absorbs the heat of the heat exchange liquid again and transfers the heat to the heat conduction plate, the auxiliary rod can absorb and disperse the heat again, then the active cooling effect is achieved, the situation that the three-edge milling cutter is overheated can be effectively reduced, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to a PCD milling cutter, in particular to a three-blade PCD milling cutter, belonging to the technical field of milling cutters. Background Art

[0002] A three-flute PCD milling cutter is a highly efficient cutting tool characterized by its use of polycrystalline diamond (PCD) as the cutting edge material and its three cutting edges. The cutting edge is made of PCD, a superhard material synthesized from diamond powder and a binder under high temperature and pressure. It possesses extremely high hardness and wear resistance. Carbide materials such as tungsten steel are typically used to ensure the tool's strength and rigidity.

[0003] In the prior art, there is a flat-head three-blade PCD milling cutter disclosed in announcement number CN218983313U, which includes a shank, a cutter head, and a shield, wherein the cutter head is detachably arranged at one end of the shank; the shield is slidably arranged on the shank and can slide along the shank to the outside of the cutter head for shielding the cutter head; it also includes a limit plate, wherein the shield is provided with a sliding through hole that is slidably connected to the cutter head, and the sliding through hole is connected to one end of the shield; the limit plate is slidably arranged on the shield and slides toward or away from the sliding through hole. By setting a limit plate, when the cutter head needs to be detached, the limit plate is adjusted to slide away from the cutter head. At this time, the cutter head and the shank can be detached and the cutter head can be adjusted to slide out from one side of the sliding through hole, thereby completing the detachment of the cutter head. During the detachment of the cutter head, there is no need to detach the shield, which saves disassembly time and is convenient to use.

[0004] Although the above technical solution sets a limit plate, when the cutter head needs to be detached, the limit plate is adjusted to slide away from the cutter head to complete the detachment of the cutter head, but when it is used, the high-speed operation of the milling cutter generates heat, and the milling cutter cannot be cooled during use, resulting in the milling cutter temperature being too high, affecting the processing effect of the workpiece. In view of this, a three-blade PCD milling cutter is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model provides a three-edge PCD milling cutter to solve the problem that the milling cutter generates heat due to high-speed operation during use, and the milling cutter cannot be cooled during use, resulting in excessively high temperature of the milling cutter, which affects the processing effect of the workpiece.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: a three-edge PCD milling cutter, comprising a fixed tool holder, the end of which is connected to the three-edge milling cutter, and a cooling mechanism for cooling the milling cutter is provided inside the fixed tool holder;

[0007] The cooling mechanism includes a liquid storage cavity, which is opened inside the fixed knife handle. A heat conduction plate is fixed to the outer surface of the fixed knife handle. Three heat dissipation plates are fixed to the outer surface of the heat conduction plate. Several heat conduction rods that penetrate the inner wall of the fixed knife handle are fixed to the inner wall of the heat conduction plate. Several auxiliary rods are fixed to the side walls of the three heat dissipation plates.

[0008] As a further solution of the present invention: a fixing plate is fixed to one end of the three-blade milling cutter.

[0009] As a further solution of the present invention: four positioning rods are fixed to the side wall of the fixed plate, and one end of the four positioning rods is plugged into and connected to a positioning hole provided on the fixed knife handle.

[0010] As a further solution of the present invention: a heat pipe plug-connected to the fixed tool holder is fixed on one side of the three-blade milling cutter.

[0011] As a further solution of the present invention: a limiting hole is provided on the outer wall of the three-blade milling cutter, and a limiting bolt which is plugged into the limiting hole is installed on the outer wall of the fixed shank.

[0012] As a further solution of the present invention: a chip removal groove is provided on the outer surface of the three-blade milling cutter.

[0013] As a further solution of the present invention: a sealing gasket is provided on the right side of the interior of the fixed knife handle, and the heat pipe forms a sealing structure with the fixed knife handle through the sealing gasket.

[0014] The beneficial effects of the present invention are as follows: heat is transferred to the heat exchange liquid through the heat exchange liquid stored in the liquid storage chamber, and the heat conducting rod absorbs the heat of the heat exchange liquid again and transfers the heat to the heat conducting plate, and the auxiliary rod can absorb and disperse the heat again, thereby realizing the effect of active cooling, which can effectively reduce the overheating of the three-blade milling cutter and improve practicality; by unscrewing the limit bolt, the limit bolt and the limit hole on the three-blade milling cutter are separated, and the three-blade milling cutter can be disassembled, and the fixing plate provided on the three-blade milling cutter can play a limiting role under the cooperation of the positioning rod and the positioning hole, thereby ensuring the stability of the connection between the three-blade milling cutter and the fixed tool holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixed handle of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-edge milling cutter of the utility model;

[0018] Figure 4For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] In the figure: 1. Fixed tool holder; 2. Three-blade milling cutter; 3. Liquid storage chamber; 31. Heat conduction plate; 32. Heat dissipation plate; 33. Heat conduction rod; 34. Auxiliary rod; 4. Fixed plate; 5. Positioning rod; 6. Positioning hole; 7. Heat pipe; 8. Limit hole; 9. Limit bolt; 10. Chip groove; 11. Sealing gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0021] like Figures 1 to 4 As shown, a three-edge PCD milling cutter includes a fixed tool holder 1, a three-edge milling cutter 2 is connected to the end of the fixed tool holder 1, and a cooling mechanism for cooling the milling cutter is provided inside the fixed tool holder 1;

[0022] The cooling mechanism includes a liquid storage chamber 3, which is opened inside the fixed tool handle 1, a heat conducting plate 31 is fixed to the outer surface of the fixed tool handle 1, three heat dissipation plates 32 are fixed to the outer surface of the heat conducting plate 31, a plurality of heat conducting rods 33 penetrating the inner wall of the fixed tool handle 1 are fixed to the inner wall of the heat conducting plate 31, a plurality of auxiliary rods 34 are fixed to the side walls of the three heat dissipation plates 32, a fixed plate 4 is fixed to one end of the three-blade milling cutter 2, four positioning rods 5 are fixed to the side wall of the fixed plate 4, one end of the four positioning rods 5 are plugged into and connected to the positioning holes 6 opened on the fixed tool handle 1, a heat pipe 7 plugged into and connected to the fixed tool handle 1 is fixed to one side of the three-blade milling cutter 2, and the heat exchange stored in the liquid storage chamber 3 is cooled. Liquid, since the three-blade milling cutter 2 generates heat when processing the workpiece at high speed, and this heat is absorbed by the heat pipe 7, the heat pipe 7 has a good thermal conductivity, so that the heat is transferred to the heat exchange liquid, and the heat conducting rod 33 absorbs the heat of the heat exchange liquid again and transfers the heat to the heat conducting plate 31. When the fixed tool holder 1 rotates, it will drive the heat dissipation plate 32 to rotate at a high speed. At this time, the heat transferred to the heat conducting plate 31 is absorbed by the heat dissipation plate 32, and the auxiliary rod 34 can absorb and disperse the heat again, so that when the auxiliary rod 34 is driven to rotate at a high speed, the auxiliary rod 34 and the air collide to dissipate the heat, thereby realizing the effect of active cooling, which can effectively reduce the overheating of the three-blade milling cutter 2 and improve practicality. Example 2

[0023] In addition to all the technical features of Example 1, this embodiment also includes: a limiting hole 8 is provided on the outer wall of the three-blade milling cutter 2, and a limiting bolt 9 is installed on the outer wall of the fixed tool handle 1 that is plugged into the limiting hole 8. A chip removal groove 10 is provided on the outer surface of the three-blade milling cutter 2, and a sealing gasket 11 is provided on the right side of the inside of the fixed tool handle 1. The heat pipe 7 forms a sealing structure with the fixed tool handle 1 through the sealing gasket 11. When the three-blade milling cutter 2 needs to be disassembled, the limiting bolt 9 can be unscrewed to separate the limiting bolt 9 and the limiting hole 8 on the three-blade milling cutter 2, and the three-blade milling cutter 2 can be disassembled. The fixing plate 4 set on the three-blade milling cutter 2 can play a limiting role with the cooperation of the positioning rod 5 and the positioning hole 6, thereby ensuring the stability of the connection between the three-blade milling cutter 2 and the fixed tool handle 1, and the provided sealing gasket 11 plays a sealing role to reduce the leakage of the heat exchange fluid.

[0024] Working principle: Before using the three-blade PCD milling cutter, first connect and assemble the fixed tool holder 1 and the external driving device. When in use, the external device drives the fixed tool holder 1 to rotate, and then drives the three-blade milling cutter 2 to run and mill the workpiece. Through the chip groove 10 opened on the outer surface of the three-blade milling cutter 2, the chips generated when processing the workpiece can be discharged to the outside, and through the heat exchange fluid stored in the liquid storage chamber 3, since the three-blade milling cutter 2 runs at high speed to process the workpiece, heat is generated, and this heat is absorbed by the heat pipe 7. The heat pipe 7 has a good thermal conductivity effect, so that the heat is transferred to the heat exchange fluid, and the heat conducting rod 33 absorbs the heat of the heat exchange fluid again and transfers the heat to the heat conducting plate 31. When the fixed tool holder 1 rotates, it drives the heat dissipation plate 32 to rotate at high speed. At this time The heat transferred to the heat conduction plate 31 is absorbed by the heat sink 32, and the auxiliary rod 34 can absorb and disperse the heat again, so that when the auxiliary rod 34 is driven to rotate at high speed, the auxiliary rod 34 and the air collide to dissipate the heat, thereby realizing the effect of active cooling, which can effectively reduce the overheating of the three-blade milling cutter 2 and improve practicality. When the three-blade milling cutter 2 needs to be disassembled, the limit bolt 9 can be unscrewed to separate the limit bolt 9 and the limit hole 8 on the three-blade milling cutter 2, and then it can be disassembled. The fixing plate 4 set on the three-blade milling cutter 2 can play a limiting role with the cooperation of the positioning rod 5 and the positioning hole 6, thereby ensuring the stability of the connection between the three-blade milling cutter 2 and the fixed tool holder 1, and the provided sealing gasket 11 plays a sealing role to reduce the leakage of the heat exchange fluid.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A three-edged PCD milling cutter, comprising a fixed shank (1), characterized in that: A three-edged milling cutter (2) is connected to the end of the fixed tool handle (1), and a cooling mechanism for cooling the milling cutter is provided inside the fixed tool handle (1); The cooling mechanism comprises a liquid storage cavity (3), the liquid storage cavity (3) being opened inside the fixed knife handle (1), a heat conducting plate (31) being fixed to the outer surface of the fixed knife handle (1), three heat dissipation plates (32) being fixed to the outer surface of the heat conducting plate (31), a plurality of heat conducting rods (33) penetrating the inner wall of the fixed knife handle (1) being fixed to the inner wall of the heat conducting plate (31), and a plurality of auxiliary rods (34) being fixed to the side walls of the three heat dissipation plates (32).

2. A three-edge PCD milling cutter according to claim 1, characterized in that: A fixing plate (4) is fixed to one end of the three-edge milling cutter (2).

3. A three-edge PCD milling cutter according to claim 2, characterized in that: Four positioning rods (5) are fixed to the side wall of the fixed plate (4), and one end of each of the four positioning rods (5) is plugged into a positioning hole (6) provided on the fixed knife handle (1).

4. The three-edge PCD milling cutter according to claim 1, characterized in that: A heat pipe (7) plug-connected to the fixed tool holder (1) is fixed on one side of the three-blade milling cutter (2).

5. The three-edge PCD milling cutter according to claim 4, characterized in that: A limiting hole (8) is provided on the outer wall of the three-blade milling cutter (2), and a limiting bolt (9) plug-connected to the limiting hole (8) is installed on the outer wall of the fixed shank (1).

6. The three-edge PCD milling cutter according to claim 1, characterized in that: The outer surface of the three-edge milling cutter (2) is provided with a chip removal groove (10).

7. The three-edge PCD milling cutter according to claim 4, characterized in that: A sealing gasket (11) is provided on the right side of the interior of the fixed knife handle (1), and the heat pipe (7) forms a sealing structure with the fixed knife handle (1) through the sealing gasket (11).

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