High-efficiency chip removal end mill for mold machining

Abstract

The utility model discloses a kind of high-efficiency chip removal end mill for mould processing, belong to milling cutter technical field, to solve the technical problem that milling cutter has obvious deficiency in chip removal performance under prior art. The high-efficiency chip removal end mill for mould processing includes cutter body and shank, end groove is opened on the cutter body end face, chip removal groove is opened on the cutter body front end peripheral wall, and end groove is communicated with chip removal groove. The high-efficiency chip removal end mill for mould processing is gradually deepened and widened by the depth and width of end groove on the cutter body end face from center to periphery, and chip removal groove is distributed in helical shape on peripheral wall, this special structure design provides smooth discharge passage for chip, can quickly and effectively export the chip generated by cutting, greatly reduce the accumulation of chip around cutter body, avoid the problems such as cutting force increase, cutting temperature rise, tool wear aggravation caused by chip accumulation, to improve processing efficiency and processing quality.

Description

Technical Field

[0001] This utility model belongs to the field of milling cutter technology, specifically relating to a high-efficiency chip-removing end mill for mold processing. Background Technology

[0002] In the field of mold processing, end mills are a widely used cutting tool. They can complete milling of various complex shapes during mold manufacturing and play a key role in ensuring the accuracy and quality of molds.

[0003] However, traditional end mills suffer from numerous problems in practical applications, particularly in chip removal performance. The chip removal structure of traditional end mills is often quite simple, typically consisting of regular-shaped chip grooves on the cutter body. During cutting, when the cutting depth is large or the material being cut is hard, chips easily accumulate in the grooves and cannot be removed promptly and smoothly. This chip accumulation not only leads to a sharp increase in cutting force, placing excessive load on the machine tool and affecting its lifespan and machining accuracy, but also causes a rapid rise in temperature in the cutting zone, accelerating tool wear, reducing tool life, and increasing machining costs. Therefore, this application proposes a high-efficiency chip-removing end mill for mold processing. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a high-efficiency chip-removing end mill for mold processing, which aims to solve the technical problem that the existing end mills have obvious deficiencies in chip removal performance.

[0005] Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides a high-efficiency chip-removing end mill for mold processing, including a cutter body and a cutter shank. An end groove is formed on the end face of the cutter body, and a chip removal groove is formed on the peripheral wall of the front end of the cutter body. The end groove is connected to the chip removal groove. The depth of the end groove gradually increases from the center of the end face of the cutter body towards the surrounding area, and the width of the end groove also gradually increases from the center of the end face of the cutter body towards the surrounding area.

[0007] Preferably, the end face of the blade is a conical surface, the end groove is formed on the conical surface, the blade tip is located at the center of the end face of the blade, the corner between one side of the end groove and the end face of the blade forms an end cutting edge, and the corner between one side of the chip removal groove and the peripheral surface of the blade forms a peripheral cutting edge.

[0008] Preferably, the end groove has at least three grooves that are evenly distributed around the blade tip, and the number of chip removal grooves is equal to the number of end grooves.

[0009] Preferably, the multiple chip removal grooves are spirally distributed around the cutter body, and the tail end of the chip removal groove is smoothly connected to the circumferential surface of the cutter body. The depth of the chip removal groove is one-third of the diameter of the cutter body.

[0010] Preferably, the tail end of the knife handle is provided with a connector, and the connector has a hexagonal cross-section.

[0011] Preferably, the connector end face has a rounded chamfer, the side of the connector and the blade handle have a rounded chamfer, the diameter of the blade handle is larger than the diameter of the blade body, and the connection between the blade handle and the blade body has a chamfer.

[0012] Preferably, the cone angle at the end of the blade is α, and the range of α is 18–25°. The overall length of the blade and handle is b, and the length of the blade is c. The ratio of b to c is 2:1. The length of the chip removal groove is d, and the ratio of d to c is 4:9; The diameter of the blade is e, and the diameter of the handle is f, with the ratio of e to f being 5:6. The length of the handle is g, and the length of the connector is h, with the ratio of g to h being 18:7.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a unique structural design that provides a smooth discharge channel for chips by gradually increasing the depth and width of the end groove on the end face of the tool body from the center outwards, as well as spirally distributed chip removal grooves on the peripheral wall. This design enables the rapid and effective removal of chips generated during cutting, greatly reducing chip accumulation around the tool body and avoiding problems such as increased cutting force, higher cutting temperature, and accelerated tool wear caused by chip accumulation. This, in turn, improves machining efficiency and quality.

[0015] In this invention, by adjusting the diameter and length ratios of the cutter body and shank, as well as the chamfering design at the joints of various parts, stress concentration can be effectively reduced, the overall structural strength and rigidity of the end mill can be improved, and it can withstand greater cutting forces during high-speed rotary cutting, making it less prone to breakage and deformation, thus ensuring the safety and stability of machining and extending the service life of the tool. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one end of the blade body of this utility model; Figure 2 This is a schematic diagram of the structure of one end of the knife handle of this utility model; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the end face structure of one end of the blade body of this utility model.

[0018] The markings in the attached diagram are as follows: 1. Blade body; 2. Blade holder; 3. End groove; 4. Blade tip; 5. End cutting edge; 6. Chip removal groove; 7. Peripheral cutting edge; 8. Connector. Detailed Implementation

[0019] 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.

[0020] This embodiment provides a high-efficiency chip-removing end mill for mold processing, the structural schematic diagram of which is shown below. Figures 1-4 As shown, the high-efficiency chip-removing end mill for mold processing consists of two parts: the cutter body 1 and the cutter holder 2.

[0021] In this embodiment, the end face of the cutter body 1 is set as a conical surface with a conical angle α of 20°. The range of α is 18-25°, which can better balance cutting performance and chip removal effect. The center of the end face of the cutter body 1 has a cutting tip 4. At least three end grooves 3 are evenly formed around the cutting tip 4 on the conical end face of the cutter body 1. In this embodiment, four end grooves 3 are formed. The depth of the end grooves 3 gradually increases from the center of the end face of the cutter body 1 outwards, and the width also gradually increases from the center of the end face of the cutter body 1 outwards. This special structural design allows the end grooves 3 to better accommodate and guide the chips generated during cutting. The edge between one side of the end groove 3 and the end face of the cutter body 1 forms an end cutting edge 5, which plays the main cutting role during the cutting process.

[0022] Furthermore, in this embodiment, the front peripheral wall of the cutter body 1 is provided with a number of chip removal grooves 6 equal to the number of end grooves 3. In this embodiment, there are four chip removal grooves 6, and each chip removal groove 6 is connected to the corresponding end groove 3. The multiple chip removal grooves 6 are spirally distributed around the cutter body 1. This spiral distribution allows chips to be smoothly discharged along the chip removal grooves 6 during the rotary cutting process, reducing the accumulation of chips around the cutter body 1. The tail end of the chip removal groove 6 is smoothly connected to the peripheral surface of the cutter body 1 to avoid sharp edges that could cause chip jamming. The depth of the chip removal groove 6 is one-third of the diameter of the cutter body 1. This depth can achieve efficient chip removal while ensuring the strength of the cutter body 1. The edge between one side of the chip removal groove 6 and the peripheral surface of the cutter body 1 forms a peripheral cutting edge 7, which plays a role in assisting cutting and finishing during the cutting process.

[0023] Furthermore, in this embodiment, the length of the cutter body 1 is c, the overall length of the cutter body 1 and the shank 2 in the integral end mill is b, and the ratio of b to c is 2:1; the length of the chip removal groove 6 is d, and the ratio of d to c is 4:9. This proportional relationship design enables the end mill to achieve the best cutting and chip removal effect during the cutting process.

[0024] Furthermore, in this embodiment, the tool holder 2 is connected to the tool body 1, and the diameter of the tool holder 2 is larger than the diameter of the tool body 1. A chamfer is provided at the connection point between the tool holder 2 and the tool body 1 to reduce stress concentration and improve connection strength. A connector 8 is provided at the tail end of the tool holder 2. The connector 8 has a hexagonal cross-section, which facilitates connection and fixation with the machine tool's drive mechanism. The end face of the connector 8 has rounded chamfers at its corners, and the side of the connector 8 also has rounded chamfers at its connection with the tool holder 2. These rounded chamfers reduce stress concentration and prevent the connector 8 from breaking due to stress concentration during use. The length of the tool holder 2 is g, and the length of the connector 8 is h, with a ratio of g to h of 18:7. This ratio ensures the connection strength and stability between the connector 8 and the tool holder 2. In addition, the diameter of the tool body 1 is e, and the diameter of the tool holder 2 is f, with a ratio of e to f of 5:6. This ratio ensures that the end mill meets cutting requirements while maintaining overall strength and rigidity.

[0025] Working principle: When using this high-efficiency chip-removing end mill for mold processing, the connector 8 is connected and fixed to the machine tool's drive unit, and the machine tool drives the end mill to rotate. The end cutting edge 5 on the end face of the cutter body 1 first contacts the mold material to perform cutting operations, and the chips generated by cutting enter the end groove 3. As the end mill continues to rotate, the chips in the end groove 3 are guided by centrifugal force and the gradual change in depth and width of the end groove 3 due to its special structure, and enter the chip removal groove 6 connected to it. Because the chip removal groove 6 is spirally distributed and its tail end is smoothly connected to the circumference of the cutter body 1, the chips can be smoothly discharged outward along the chip removal groove 6, avoiding accumulation around the cutter body 1, thereby ensuring the smooth progress of the cutting process. At the same time, the peripheral cutting edge 7 on the peripheral wall of the cutter body 1 plays a role in assisting cutting and finishing during the cutting process, further improving the machining quality.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency chip-removing end mill for mold processing, comprising a cutter body (1) and a cutter holder (2), characterized in that: An end groove (3) is provided on the end face of the blade body (1), and a chip removal groove (6) is provided on the front peripheral wall of the blade body (1). The end groove (3) is connected to the chip removal groove (6). The depth of the end groove (3) gradually increases from the center of the end face of the blade body (1) towards the surrounding area, and the width of the end groove (3) also gradually increases from the center of the end face of the blade body (1) towards the surrounding area.

2. The high-efficiency chip-removing end mill for mold processing according to claim 1, characterized in that, The end face of the blade (1) is set as a conical surface, the end groove (3) is opened on the conical surface, the blade tip (4) is located at the center of the end face of the blade (1), the corner between one side of the end groove (3) and the end face of the blade (1) forms an end blade (5), and the corner between one side of the chip removal groove (6) and the circumferential surface of the blade (1) forms a circumferential blade (7).

3. The high-efficiency chip-removing end mill for mold processing according to claim 2, characterized in that, The end groove (3) has at least three grooves that are evenly distributed around the blade tip (4), and the number of chip removal grooves (6) is equal to that of the end grooves (3).

4. The high-efficiency chip-removing end mill for mold processing according to claim 2, characterized in that, Multiple chip removal grooves (6) are spirally distributed around the cutter body (1), and the tail end of the chip removal groove (6) is smoothly connected to the circumference of the cutter body (1). The depth of the chip removal groove (6) is one-third of the diameter of the cutter body (1).

5. The high-efficiency chip-removing end mill for mold processing according to claim 1, characterized in that, The end of the handle (2) is provided with a connector (8), and the connector (8) has a hexagonal cross-section.

6. The high-efficiency chip-removing end mill for mold processing according to claim 5, characterized in that, The connector (8) has a rounded chamfer at the end face corner, and the side of the connector (8) is provided with a rounded chamfer at the connection between it and the handle (2). The diameter of the handle (2) is larger than the diameter of the blade (1), and the connection between the handle (2) and the blade (1) is provided with a chamfer.

7. A high-efficiency chip-removing end mill for mold processing according to claim 5, characterized in that, The cone angle at the end of the blade (1) is a, and the range of a is 18 to 25°; The overall length of the blade (1) and the handle (2) is b, and the length of the blade (1) is c. The ratio of b to c is 2:

1. The length of the chip removal groove (6) is d, and the ratio of d to c is 4:9; The diameter of the blade (1) is e, and the diameter of the handle (2) is f. The ratio of e to f is 5:

6. The length of the handle (2) is g, and the length of the connector (8) is h, with the ratio of g to h being 18:7.

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