Indexable arc thread milling cutter based on automobile part machining

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to an indexable arc thread milling cutter based on automobile part machining, and provides the following scheme aiming at the problems that an existing milling cutter is inconvenient to cool, so that a workpiece is easily damaged by the milling cutter with an over-high temperature, and the indexable arc thread milling cutter comprises a thread milling cutter body, a thread cutter is fixed on the outer wall of the thread milling cutter body, and one end of the thread milling cutter body is provided with a heat dissipation mechanism for dissipating heat of the milling cutter; the heat dissipation mechanism comprises a heat pipe, and the heat pipe is fixed to one end of the thread milling cutter body. Heat generated when a workpiece is machined by the thread milling cutter body can be absorbed through the heat pipe, the heat is transmitted into the heat exchange liquid in the liquid storage cavity, the heat conduction plate absorbs the heat of the heat exchange liquid and transmits the heat to the cooling fins, and the thread milling cutter body can drive the adjusting piece to rotate synchronously when rotating, so that the speed of the cooling fins making contact with air is increased, and the service life of the cooling fins is prolonged. And therefore, the heat is transferred into the air, and an active heat dissipation effect is realized.

Description

Technical Field

[0001] This utility model relates to an indexable circular arc thread milling cutter, specifically an indexable circular arc thread milling cutter for machining automotive parts, belonging to the field of milling cutter technology. Background Technology

[0002] Indexable circular arc thread end mills for automotive parts machining are efficient and precise machining tools. They combine the flexibility of indexable cutters with the specific functions of circular arc thread end mills, making them particularly suitable for machining complex thread structures in automotive parts. The working principle is based on thread milling, where each revolution of the cutter provides one lead axially, achieving interpolation machining of a spatial helix. During machining, the circular motion generates the thread diameter, while the synchronous linear motion generates the pitch. By adjusting the feed rate and rotational speed of the cutter, the accuracy and surface quality of the thread can be controlled.

[0003] In the prior art, such as the thread milling cutter disclosed in CN221064712U, a tool holder, a cutter head, and a set of cutting edges are included. The cutter head is connected to the tool holder. At least two sets of cutting edges are spaced apart on the cutter head circumferentially. Each set of cutting edges includes a first cutting tooth, a second cutting tooth, and a third cutting tooth with gradually increasing distance from the tool holder. The height of the first cutting tooth is L1, the height of the second cutting tooth L2 satisfies: 0.6L1≤L2≤0.8L1, and the height of the third cutting tooth L3 satisfies: 0.4L1≤L3≤0.6L1. Here, L1 is the major diameter of a complete thread tooth in the thread structure to be machined. This reduces the cutting allowance of each cutting tooth, facilitates matching larger cutting parameters, thereby improving the machining efficiency of the thread milling cutter and extending its service life.

[0004] While the above-mentioned technical solutions can reduce the cutting allowance of each cutting tooth, making it easier to match larger cutting parameters and thus improve the machining efficiency of the thread milling cutter, the thread milling cutter generates heat when milling the workpiece, making it difficult to cool the cutter. This can lead to the cutter overheating and damaging the workpiece. Therefore, an indexable circular arc thread milling cutter for automotive parts machining is provided to overcome the above-mentioned defects. Utility Model Content

[0005] This invention provides an indexable circular arc thread milling cutter for automotive parts processing to solve the problem that the milling cutter is difficult to cool down, which can easily damage the workpiece due to excessively high temperature.

[0006] The present invention achieves the above objectives through the following technical solution: an indexable circular arc thread milling cutter for processing automotive parts, comprising a thread milling cutter body, a thread cutting tool fixed on the outer wall of the thread milling cutter body, and a heat dissipation mechanism for dissipating heat from the milling tool at one end of the thread milling cutter body;

[0007] The heat dissipation mechanism includes a heat pipe, which is fixed to one end of the thread milling cutter body. An adjustment component is connected to the end of the heat pipe. A connecting groove for inserting and connecting the heat pipe is opened on one side of the adjustment component. A liquid storage chamber is opened inside the adjustment component, and a heat-conducting plate is fixed outside the liquid storage chamber.

[0008] As a further improvement of this utility model: three heat sinks are fixed on the outer surface of the heat-conducting plate, and the outer wall of the adjusting component is equipped with fixing bolts that are connected to the heat pipe.

[0009] As a further improvement of this utility model: the outer surface of the thread milling cutter body is provided with a chip removal groove, and one end of the adjusting member is provided with an adjusting mechanism for adjusting the length of the milling cutter.

[0010] As a further improvement of this utility model, one end of the adjusting member is telescopically connected to a fixed handle.

[0011] As a further improvement of this utility model: the adjustment mechanism includes a mounting cavity, which is formed inside the fixed handle.

[0012] As a further embodiment of this utility model: the end of the adjusting member is fixed with a limiting block that is slidably connected to the mounting cavity, and the interior of the adjusting member is connected with a guide rod that is fixed to the mounting cavity.

[0013] As a further improvement of this utility model, the outer surface of the thread milling cutter body is fitted with a fixing screw that abuts against the adjusting component.

[0014] The beneficial effects of this utility model are: the heat pipe can absorb the heat generated by the thread milling cutter body during the processing of the workpiece and transfer the heat to the heat exchange liquid in the storage chamber. The heat conduction plate then absorbs the heat of the heat exchange liquid and transfers it to the heat sink. Since the thread milling cutter body rotates, it will drive the adjustment component to rotate synchronously, which will accelerate the contact speed between the heat sink and the air, thereby transferring the heat to the air and achieving the effect of active heat dissipation.

[0015] By unscrewing the fixing screw, the fixing screw and the outer wall of the adjusting component are separated. With the cooperation of the mounting cavity, the adjusting component can be pulled to move, thereby adjusting the overall length of the milling cutter, which is convenient for processing different workpieces. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the fixing handle of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the fixing handle of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the adjusting component of this utility model.

[0020] In the diagram: 1. Thread milling cutter body; 2. Thread cutter; 3. Heat pipe; 31. Adjusting component; 32. Connecting groove; 33. Fixing bolt; 34. Liquid storage chamber; 35. Heat-conducting plate; 36. Heat sink; 4. Chip removal groove; 5. Fixing handle; 6. Mounting cavity; 61. Limiting block; 62. Guide rod; 7. Fixing screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 4 As shown, an indexable circular arc thread milling cutter for machining automotive parts includes a thread milling cutter body 1, a thread cutter 2 fixed on the outer wall of the thread milling cutter body 1, and a heat dissipation mechanism for dissipating heat from the milling cutter at one end of the thread milling cutter body 1.

[0023] The heat dissipation mechanism includes a heat pipe 3, which is fixed to one end of the thread milling cutter body 1. An adjusting component 31 is connected to the end of the heat pipe 3. A connecting groove 32 for inserting and connecting the adjusting component 31 to the heat pipe 3 is provided on one side. A liquid storage chamber 34 is provided inside the adjusting component 31. A heat-conducting plate 35 is fixed to the outside of the liquid storage chamber 34. Three heat sinks 36 are fixed to the outer surface of the heat-conducting plate 35. A fixing bolt 33 for inserting and connecting the adjusting component 31 to the heat pipe 3 is installed on the outer wall of the adjusting component 31. A chip removal groove 4 is provided on the outer surface of the thread milling cutter body 1. One end is equipped with an adjustment mechanism for adjusting the length of the milling cutter. The chip removal groove 4 facilitates the discharge of waste chips generated during machining. The heat pipe 3 can absorb the heat generated by the thread milling cutter body 1 during workpiece machining and transfer the heat to the heat exchange liquid in the liquid storage chamber 34. The heat conduction plate 35 then absorbs the heat from the heat exchange liquid and transfers it to the heat sink 36. Since the thread milling cutter body 1 rotates, it will drive the adjustment component 31 to rotate synchronously, which will accelerate the contact speed between the heat sink 36 and the air, thereby transferring the heat into the air and achieving the effect of active heat dissipation. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: a fixed handle 5 telescopically connected to one end of the adjusting member 31; an adjusting mechanism including a mounting cavity 6, which is opened inside the fixed handle 5; a limiting block 61 fixed to the end of the adjusting member 31 and slidably connected to the mounting cavity 6; a guide rod 62 fixed to the mounting cavity 6 and inserted into the interior of the adjusting member 31; a fixing screw 7 abutting and connected to the adjusting member 31 on the outer surface of the thread milling cutter body 1; unscrewing the fixing screw 7 to separate the fixing screw 7 from the outer wall of the adjusting member 31; and with the cooperation of the mounting cavity 6, the adjusting member 31 can be pulled to move, thereby adjusting the overall length of the milling cutter, facilitating the processing of different workpieces; and with the cooperation of the limiting block 61 and the guide rod 62, a limiting function can be played to prevent the adjusting member 31 from being pulled too much and falling off; by unscrewing the fixing bolt 33 to release the fixation of the heat pipe 3, with the cooperation of the connecting groove 32, the thread milling cutter body 1 and the adjusting member 31 can be disassembled, making it easy to replace the thread milling cutter body 1 separately.

[0025] Working Principle: Before using this indexable circular arc thread milling cutter for automotive parts machining, the cutter is connected to the drive device. By fixing the fixed shank 5 to the output shaft of the drive device, the device can drive the fixed shank 5 to rotate, thereby driving the thread milling cutter body 1 to rotate. Under the action of the thread cutter 2, the workpiece is milled. The chip removal groove 4 facilitates the discharge of waste chips generated during machining. The heat pipe 3 absorbs the heat generated by the thread milling cutter body 1 during workpiece machining and transfers the heat to the heat exchange fluid in the liquid storage chamber 34. The heat conduction plate 35 then absorbs the heat from the heat exchange fluid and transfers it to the heat sink 36. Since the rotation of the thread milling cutter body 1 drives the adjusting component 31 to rotate synchronously, the heat sink 36 accelerates and... The speed of air contact allows heat to be transferred into the air, achieving active heat dissipation. When the length of the milling cutter needs to be adjusted, the fixing screw 7 can be unscrewed, separating the fixing screw 7 from the outer wall of the adjusting component 31. With the cooperation of the mounting cavity 6, the adjusting component 31 can be pulled to move, thereby adjusting the overall length of the milling cutter. This facilitates the processing of different workpieces. With the cooperation of the limiting block 61 and the guide rod 62, the limiting function can be achieved, preventing the adjusting component 31 from being pulled too much and falling off. By unscrewing the fixing bolt 33 to release the fixation of the heat pipe 3, with the cooperation of the connecting groove 32, the thread milling cutter body 1 and the adjusting component 31 can be disassembled, making it easy to replace the thread milling cutter body 1 separately.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A type of indexable circular arc thread milling cutter for machining automotive parts, comprising a thread milling cutter body (1), characterized in that: The thread milling cutter body (1) has a thread cutter (2) fixed on its outer wall, and one end of the thread milling cutter body (1) is provided with a heat dissipation mechanism for heat dissipation of the milling cutter. The heat dissipation mechanism includes a heat pipe (3), which is fixed to one end of the thread milling cutter body (1). An adjusting member (31) is connected to the end of the heat pipe (3). A connecting groove (32) for inserting and connecting with the heat pipe (3) is provided on one side of the adjusting member (31). A liquid storage chamber (34) is provided inside the adjusting member (31). A heat-conducting plate (35) is fixed outside the liquid storage chamber (34).

2. The indexable circular arc thread milling cutter for automotive parts machining according to claim 1, characterized in that: Three heat sinks (36) are fixed on the outer surface of the heat-conducting plate (35), and the outer wall of the adjusting component (31) is fitted with fixing bolts (33) that are plugged into and connected to the heat pipe (3).

3. The indexable circular arc thread milling cutter for automotive parts machining according to claim 2, characterized in that: The outer surface of the thread milling cutter body (1) is provided with a chip removal groove (4), and one end of the adjusting member (31) is provided with an adjusting mechanism for adjusting the length of the milling cutter.

4. The indexable circular arc thread milling cutter for automotive parts machining according to claim 2, characterized in that: One end of the adjusting member (31) is telescopically connected to a fixed handle (5).

5. The indexable circular arc thread milling cutter for automotive parts machining according to claim 3, characterized in that: The adjustment mechanism includes a mounting cavity (6), which is located inside the fixing handle (5).

6. The indexable circular arc thread milling cutter for automotive parts machining according to claim 5, characterized in that: The end of the adjusting member (31) is fixed with a limiting block (61) that is slidably connected to the mounting cavity (6), and the inside of the adjusting member (31) is connected with a guide rod (62) that is fixed to the mounting cavity (6).

7. A type of indexable circular arc thread milling cutter for machining automotive parts according to claim 6, characterized in that: The outer surface of the thread milling cutter body (1) is fitted with a fixing screw (7) that abuts against the adjusting member (31).

Images