Alloy milling cutter convenient for heat dissipation

Abstract

The utility model belongs to the technical field of machining cutters, particularly relates to an alloy milling cutter convenient for heat dissipation, and aims to solve the problems that the temperature of a cutting edge of the cutter is sharply increased, the service life of the cutter is shortened and the service life of the cutter is influenced because the heat cannot be timely and effectively dissipated when the conventional device is used. In order to solve the problems, the following scheme is provided: the device comprises a cutter handle, one end of the cutter handle is provided with a cutter head, and the periphery of the cutter head is provided with a spiral heat dissipation groove; the beneficial effects of the utility model are that through the cooperation of the spiral heat dissipation grooves, the cooling channels and other structures, an omnibearing cooling liquid circulation heat dissipation network is constructed. Cooling liquid can rapidly make contact with all parts of the tool bit to take away a large amount of heat, precise heat dissipation is achieved through the inner cooling through holes and the spiral heat dissipation through grooves, local overheating of the tool bit is avoided, heat expansion and cold contraction deformation of the tool bit is reduced through stable heat dissipation, the spiral structure further assists in chip removal, chip scratches are reduced, and the machining precision is effectively improved.

Description

Technical Field

[0001] This utility model relates to an alloy end mill, specifically an alloy end mill that facilitates heat dissipation, and belongs to the field of machining tool technology. Background Technology

[0002] In the machining industry, milling is a very common machining method. As the core cutting tool, the performance of carbide milling cutters directly affects the machining quality and efficiency. In the actual milling process, due to the high-speed friction between the milling cutter and the workpiece and the action of cutting force, a lot of heat will be generated. If this heat cannot be dissipated in time and effectively, it will cause the temperature of the milling cutter to rise sharply.

[0003] In the prior art, such as the tungsten carbide end mill disclosed in announcement number CN206104986U, the cutting edge of this cemented carbide end mill adopts an unequal-distance segmentation technology, which enables it to play a good anti-vibration role even when machining at an inclined angle, and the end mill successfully achieves a long service life. The above-mentioned prior art solutions have the following shortcomings: During use, due to the cutting deformation of the metal material and the friction between the tool and the workpiece, a large amount of cutting heat is generated. If this heat cannot be dissipated in a timely and effective manner, the temperature of the cutting edge of the tool will rise sharply. The excessively high temperature will accelerate the wear of the tool material and reduce the service life of the tool. On the other hand, it will also reduce the surface quality of the machined workpiece, such as increasing surface roughness and deteriorating workpiece dimensional accuracy. Utility Model Content

[0004] The purpose of this invention is to provide an alloy end mill that facilitates heat dissipation, thereby addressing the problems that the aforementioned devices cannot effectively dissipate heat in a timely manner, leading to a sharp increase in the cutting edge temperature of the tool, reducing the tool's service life, and causing a decrease in the surface quality of the machined workpiece.

[0005] The present invention achieves the above objectives through the following technical solution: an alloy end mill that facilitates heat dissipation, including a shank;

[0006] The handle has a cutting head installed at one end, with a spiral heat dissipation groove on the outer circumference of the cutting head. The handle has a cooling channel inside, and also an external cooling channel inside. One end of the external cooling channel is connected to the cooling channel, and the other end of the external cooling channel extends into the spiral heat dissipation groove.

[0007] As a further improvement of this utility model: the end of the cutter head is provided with an internal cooling through hole, one end of which extends into the cutter handle and is connected to the cooling channel.

[0008] As a further improvement of this utility model, the end of the cutter head is also provided with a cross groove, which is connected to the spiral heat dissipation groove.

[0009] As a further improvement of this utility model, there are multiple spiral heat dissipation grooves, which are spirally arranged around the outer circumference of the cutter head.

[0010] As a further improvement of this utility model, each spiral structure cutting tool on the tool head has a spiral heat dissipation groove inside.

[0011] As a further embodiment of this utility model: one end of the spiral heat dissipation channel extends into the tool holder and is connected to the cooling channel, and the cutting tool is set out from one end of the spiral heat dissipation channel.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes a combination of structures including spiral heat dissipation grooves, external cooling channels, internal cooling holes, and cross grooves. The alloy end mill, through the cooling channels inside the shank, external cooling channels, spiral heat dissipation grooves, and spiral heat dissipation grooves inside the cutting tool, constructs a comprehensive, multi-layered coolant circulation and heat dissipation network. The coolant can quickly and fully contact all parts of the cutting head, carrying away the large amount of heat generated during cutting. The internal cooling holes at the end of the cutting head directly spray the coolant into the cutting area. The spiral heat dissipation grooves closely adhere to the cutting tool, quickly absorbing the concentrated heat generated by friction between the cutting tool and the workpiece, achieving precise heat dissipation of high-temperature areas and effectively preventing localized overheating of the cutting head.

[0014] Stable heat dissipation keeps the tool tip temperature within a reasonable range, greatly reducing the dimensional changes of the tool caused by thermal expansion and contraction. At the same time, the spiral heat dissipation grooves and the spiral heat dissipation channels extending from the cutting tool not only dissipate heat but also assist in chip removal, preventing chip accumulation and entanglement, and avoiding secondary cutting by chips that could scratch the machined surface, thereby improving machining accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cutter head and spiral heat dissipation groove in this utility model;

[0017] Figure 3 This is a schematic diagram of the internal unfolded structure of the cutting tool in the tool head of this utility model;

[0018] Figure 4 In this utility model Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0019] In the diagram: 1. Tool holder; 2. Tool head; 3. Spiral heat dissipation groove; 4. External cooling channel; 5. Internal cooling through hole; 6. Cooling channel; 7. Spiral heat dissipation groove; 8. Cross groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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

[0021] like Figures 1 to 4 As shown, an alloy end mill that facilitates heat dissipation includes a shank 1;

[0022] A cutting head 2 is installed at one end of the handle 1. A spiral heat dissipation groove 3 is formed on the outer periphery of the cutting head 2. A cooling channel 6 is formed inside the handle 1. An external cooling channel 4 is also formed inside the handle 1. One end of the external cooling channel 4 is connected to the cooling channel 6, and the other end of the external cooling channel 4 extends into the spiral heat dissipation groove 3.

[0023] The coolant flows into the external cooling channel 4 through the cooling channel 6 and finally reaches the spiral heat dissipation groove 3, forming a complete and efficient heat dissipation path. The large amount of heat generated by the cutter head 2 during the cutting process can be quickly absorbed by the coolant flowing through the spiral heat dissipation groove 3. Compared with the traditional milling cutter heat dissipation method, this design greatly increases the contact area between the coolant and the cutter head 2, thereby significantly improving the heat dissipation efficiency. Through the circulation of the coolant in the cooling channel 6, the external cooling channel 4 and the spiral heat dissipation groove 3, the temperature of the cutter head 2 is kept constant, which can effectively control the thermal deformation of the tool and thus improve the machining accuracy.

[0024] Furthermore, the end of the cutter head 2 is provided with an internal cooling passage 5, one end of which extends into the handle 1 and is connected to the cooling channel 6.

[0025] When the milling cutter rotates at high speed to cut the aluminum alloy workpiece, the end of the cutter head 2 is in close contact with the workpiece, generating a large amount of heat instantly. The internal cooling through hole 5 allows the coolant to be accurately sprayed near the cutting edge, absorbing heat in the first instance and preventing the cutting edge from wearing or deforming due to overheating. The coolant sprayed from the internal cooling through hole 5 cools the cutting area while also flushing the chips. The impact force of the coolant can quickly flush away the chips generated by cutting from the machining area, preventing the chips from accumulating and tangling between the cutter head 2 and the workpiece.

[0026] Furthermore, the end of the cutter head 2 is also provided with a cross groove 8, which is connected to the spiral heat dissipation groove 3.

[0027] The cross groove 8 further expands the heat dissipation area at the end of the cutter head 2. When the coolant flows through the spiral heat dissipation groove 3, some of the coolant can flow into the cross groove 8. This coolant flows in the cross groove 8, which can more comprehensively cover the cutting area at the end of the cutter head 2 and carry away more heat. The cross groove 8 can assist the spiral heat dissipation groove 3 to keep the temperature at the end of the cutter head 2 lower during continuous cutting. At the same time, the presence of the cross groove 8 changes the flow path of the chips. Under the action of centrifugal force of high-speed rotation, the chips generated by cutting are more easily discharged through the connecting channel formed by the cross groove 8 and the spiral heat dissipation groove 3, which can effectively prevent the chips from sticking to the end of the cutter head 2, avoid secondary cutting of chips and scratches on the machined surface, and improve the quality of the machined surface. Example 2

[0028] Improvements based on Example 1:

[0029] Furthermore, there are multiple spiral heat dissipation grooves 3, which are spirally arranged around the outer circumference of the cutter head 2.

[0030] The multiple spiral heat dissipation grooves 3 greatly increase the contact area between the outer periphery of the cutter head 2 and the coolant. When the coolant flows in the grooves, it can absorb more heat generated by the cutting of the cutter head 2 and reduce the temperature of the cutter head 2.

[0031] Furthermore, each spiral structure cutting tool on the cutter head 2 has a spiral heat dissipation groove 7 inside.

[0032] The spiral heat dissipation groove 7 fits tightly against the cutting tool, which can quickly absorb the heat generated by the friction between the cutting tool and the workpiece. The spiral heat dissipation groove 7 can quickly reduce the temperature of the local high temperature points of the cutting tool, prevent the cutting edge from annealing and softening due to overheating, and maintain the cutting performance of the tool.

[0033] Furthermore, one end of the spiral heat dissipation groove 7 extends into the tool holder 1 and is connected to the cooling channel 6, and the other end of the spiral heat dissipation groove 7 extends out of the cutting tool.

[0034] One end of the spiral heat dissipation groove 7 is connected to the cooling channel 6 inside the tool holder 1, allowing the coolant to flow in smoothly and fully absorb the heat generated by the cutting tool. The other end extends out of the cutting tool, facilitating the discharge of hot coolant and quickly forming a circulation. When milling aluminum alloys, a large amount of cutting heat is generated. The coolant circulation can quickly remove the heat, maintain the low temperature of the tool head 2, avoid the accelerated wear of the tool due to overheating, and ensure the continuity of machining.

[0035] Working principle: When in use, before machining begins, the milling cutter is installed on the milling machine spindle and connected to the cooling channel 6 interface on the tool holder 1 via a pipe to the external cooling system. After the milling machine and cooling system are turned on, the coolant is pumped from the cooling system into the cooling channel 6 at the set pressure and flow rate. Part of the coolant flows into the spiral heat dissipation groove 3 through the external cooling channel 4. In the spiral heat dissipation groove 3, the coolant flows along the spiral trajectory and makes full contact with the outer circumference of the cutter head 2, carrying away a large amount of heat generated by the cutting. At the same time, another part of the coolant is directly sprayed to the end of the cutter head 2 through the internal cooling through hole 5 to cool the cutting area.

[0036] During the cutting process, the cutting tool rotates at high speed to cut the aluminum alloy workpiece, generating a large amount of heat. At this time, the spiral heat dissipation groove 7 inside the cutting tool plays a role. The heat generated by the friction between the cutting tool and the workpiece is quickly transferred to the spiral heat dissipation groove 7. The coolant flows in the spiral heat dissipation groove 7, quickly carrying away the heat. One end of the spiral heat dissipation groove 7 is connected to the cooling channel 6 inside the tool holder 1, allowing the coolant to flow in smoothly and fully absorb the heat generated by the cutting tool. The other end extends out of the cutting tool, facilitating the discharge of hot coolant and quickly forming a circulation. During milling, a large amount of cutting heat is generated. The coolant circulation can quickly carry away the heat, maintain the low temperature of the tool tip 2, avoid the accelerated tool wear due to overheating, and ensure the continuity of machining.

[0037] 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.

[0038] 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. An alloy end mill with good heat dissipation, comprising a tool holder (1); characterized in that: One end of the handle (1) is equipped with a blade head (2), and a spiral heat dissipation groove (3) is provided on the outer periphery of the blade head (2). A cooling channel (6) is provided inside the handle (1), and an external cooling channel (4) is also provided inside the handle (1). One end of the external cooling channel (4) is connected to the cooling channel (6), and the other end of the external cooling channel (4) extends into the spiral heat dissipation groove (3).

2. The heat-dissipating alloy end mill according to claim 1, characterized in that: The end of the cutter head (2) is provided with an internal cooling through hole (5), one end of which extends into the handle (1) and is connected to the cooling channel (6).

3. The heat-dissipating alloy end mill according to claim 1, characterized in that: The end of the cutter head (2) is also provided with a cross groove (8), which is connected to the spiral heat dissipation groove (3).

4. The heat-dissipating alloy end mill according to claim 1, characterized in that: The spiral heat dissipation groove (3) has multiple grooves and is spirally arranged around the outer circumference of the cutter head (2).

5. The heat-dissipating alloy end mill according to claim 1, characterized in that: Each spiral structure cutting tool on the cutting head (2) has a spiral heat dissipation groove (7) inside.

6. The heat-dissipating alloy end mill according to claim 5, characterized in that: One end of the spiral heat dissipation channel (7) extends into the tool holder (1) and is connected to the cooling channel (6). The cutting tool is set out from one end of the spiral heat dissipation channel (7).

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