An asymmetric milling cutter for continuous surface machining

Abstract

The utility model discloses a kind of asymmetric milling cutters for continuous curved surface processing, it is related to machining technical field, including shank, and tool bit, the tool bit includes the peripheral edge portion at the shank one end, the ball nose edge portion at the peripheral edge portion one end and away from the shank, the end edge portion at the ball nose edge portion one side and at the top end of the tool bit, the tool bit is equipped with two chip flutes;The peripheral edge portion is provided with two first outer peripheral edges, provided with one second outer peripheral edge, the ball nose edge portion is equipped with double ball nose edge, the end edge portion is provided with four end edges.The utility model improves processing precision and efficiency, reduces processing pressure.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of machining, specifically an asymmetric milling cutter for machining continuous curved surfaces. Background Technology

[0002] In the field of machining, especially for machining complex continuous curved surfaces, traditional ball end mills are widely used but have significant limitations. The design of traditional ball end mills typically emphasizes versatility and standardization, with the cutting performance of the ball end and peripheral end often tending towards a balance. However, in actual machining processes, this balanced design often fails to meet the specific requirements of machining different curved surfaces. Particularly when machining continuous curved surfaces with high precision requirements, the machining capability of the chisel end of traditional ball end mills is particularly insufficient, often resulting in low machining accuracy and poor surface quality.

[0003] Furthermore, traditional ball end mills face the challenge of high machining pressure during processing. Because the cutting edge design fails to fully consider the unique characteristics of curved surface machining, uneven cutting force distribution leads to vibration and wear during processing, reducing both machining efficiency and tool life. Therefore, designing a milling cutter optimized for continuous curved surface machining, improving machining accuracy and efficiency, and reducing machining pressure has become a pressing issue in the field of mechanical processing.

[0004] In summary, the problems of insufficient machining accuracy and high machining pressure of traditional ball end mills in continuous curved surface machining are technical problems that urgently need to be solved by those in this field. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an asymmetric milling cutter for machining continuous curved surfaces, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An asymmetric end mill for machining continuous curved surfaces includes a shank and a cutter head. The cutter head includes a peripheral cutting edge portion located at one end of the shank, a ball-end cutting edge portion located at one end of the peripheral cutting edge portion and away from the shank, and an end cutting edge portion located on one side of the ball-end cutting edge portion and at the top of the cutter head.

[0008] The cutter head is equipped with two chip removal grooves;

[0009] The peripheral cutting edge portion is provided with two first peripheral cutting edges and one second peripheral cutting edge, the ball-end cutting edge portion is provided with two ball-end cutting edges, and the end cutting edge portion is provided with four end cutting edges.

[0010] Preferably, the rake angle D1 of the end blade is 0° to -35°, and the clearance angle D2 of the end blade is 0° to -40°.

[0011] Preferably, the end blade has a shovel back c on one side.

[0012] Preferably, the end blade portion occupies 2 / 15 of the cut length L, and the ball-end blade portion occupies 13 / 15 of the cut length L.

[0013] Preferably, the helix angle α of the chip removal groove is 45°.

[0014] In summary, this technical solution has the following main advantages:

[0015] This invention optimizes the cutting force distribution by adjusting parameters such as the rake angle and clearance angle of the cutting edge, reducing vibration and wear during machining, thereby decreasing machining pressure and extending tool life. Through asymmetrical design and optimized cutting edge parameters, this invention allows the milling cutter to more flexibly adapt to the machining requirements of different curved surfaces when machining continuous surfaces, improving cutting efficiency and quality. Simultaneously, the chip flute design facilitates smooth chip removal, reducing clogging and wear during the cutting process.

[0016] This invention can significantly improve the efficiency of machining continuous curved surfaces. In practical applications, using the asymmetric milling cutter of this invention can shorten machining time, improve machining quality, thereby reducing production costs and increasing economic benefits. Attached Figure Description

[0017] Figure 1 The top view of the asymmetric milling cutter of this utility model Figure 1 ;

[0018] Figure 2 The front view plane of the asymmetric end mill of this utility model Figure 2 ;

[0019] Figure 3 This is a side view of the asymmetric milling cutter of this utility model;

[0020] Figure 4 This is a schematic diagram of the front and rear angles of the cutting edge of this utility model.

[0021] Figure descriptions: 1. Handle; 2. Cutter head; 21. Peripheral cutting edge; 2A. First outer peripheral cutting edge; 2B. Second outer peripheral cutting edge; 22. Ball-end cutting edge; 2C. Double ball-end cutting edge; 23. End cutting edge; 2D. End cutting edge; 2e. Chip removal groove; c. Back of the shovel; L. Cutting length; a. Helix angle. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Example 1

[0024] like Figures 1 to 4 As shown, an asymmetric milling cutter for continuous curved surface machining includes a shank 1 and a cutter head 2. The cutter head 2 includes a peripheral cutting edge 21 located at one end of the shank 1, a ball-end cutting edge 22 located at one end of the peripheral cutting edge 21 and away from the shank 1, and an end cutting edge 23 located on one side of the ball-end cutting edge 22 and at the top of the cutter head 2.

[0025] It should be noted that in this embodiment, the cutter head 2 is provided with two chip removal grooves 2e, and the helix angle α of the chip removal grooves 2e is 45°, which helps the chips to be discharged smoothly and reduces clogging and wear during the cutting process;

[0026] The peripheral cutting edge 21 is provided with two first outer peripheral cutting edges 2A and one second outer peripheral cutting edge 2B. The second outer peripheral cutting edge 2B adopts an asymmetrical design to enhance the cutting performance of the milling cutter in a specific machining direction of the peripheral cutting edge 21, so that the milling cutter can more flexibly adapt to the machining requirements of different curved surfaces during the machining process, and improve machining accuracy and efficiency. The ball end cutting edge 22 is provided with a double ball end cutting edge 2C, which is used to realize the efficient machining of complex curved surfaces. The end cutting edge 23 is provided with four end cutting edges 2D.

[0027] The rake angle D1 of the end cutting edge 2D is 0° to -35°, and the clearance angle D2 of the end cutting edge 2D is 0° to -40°. This is used to optimize the cutting force distribution and cutting efficiency, reduce the cutting force, lower the machining pressure, and improve the quality of the machined surface.

[0028] The end blade 2D has a shovel back c on one side.

[0029] The end-cutting edge 23 occupies 2 / 15 of the cut length L, and the ball-end cutting edge 22 occupies 13 / 15 of the cut length L.

[0030] The asymmetric milling cutter of this embodiment performs excellently in actual machining, especially in the machining of continuous curved surfaces. It can significantly improve machining accuracy and efficiency, while reducing machining pressure, reducing tool wear, and extending service life.

[0031] Example 2

[0032] It should be noted that the milling cutter structure is changed in this embodiment:

[0033] End cutting edge portion 23: The end cutting edge portion 23 occupies 1 / 8 of the cut length L (which is larger than 2 / 15 in Example 1) to enhance the cutting action of the end cutting edge during the machining process.

[0034] Ball end cutting edge portion 22: The ball end cutting edge portion 22 occupies the remaining part of 7 / 8 of the cut length L (i.e., the part after subtracting the length occupied by the end cutting edge portion, which is adjusted compared to 13 / 15 in Embodiment 1, but the dominant position of the ball end cutting edge portion is maintained) to ensure the dominant role of the ball end cutting edge in the machining of complex curved surfaces.

[0035] The structure of other parts is the same as in Example 1.

[0036] End-edge ratio adjustment: By increasing the proportion of the end-edge portion 23, the end mill can make fuller use of the cutting action of the end-edge during the machining process, thereby improving machining efficiency.

[0037] Ball end mill percentage maintained: Although the percentage of the ball end mill portion 22 has been adjusted, it still maintains its dominant position to ensure high performance of the milling cutter in machining complex curved surfaces.

[0038] The asymmetric end mill in this embodiment exhibits higher machining efficiency and better machining quality when machining continuous curved surfaces. Adjusting the end-edge ratio allows the end mill to more flexibly adapt to the machining requirements of different curved surfaces during the machining process, while maintaining the high performance of the ball end portion, achieving efficient and high-precision machining.

[0039] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. An asymmetric milling cutter for machining continuous curved surfaces, comprising a tool holder (1) and a cutter head (2), characterized in that... The blade (2) includes a peripheral cutting edge (21) located at one end of the handle (1), a ball-shaped cutting edge (22) located at one end of the peripheral cutting edge (21) and away from the handle (1), and an end cutting edge (23) located on one side of the ball-shaped cutting edge (22) and at the top of the blade (2). The cutter head (2) is provided with two chip removal grooves (2e); The peripheral blade portion (21) is provided with two first peripheral blades (2A) and one second peripheral blade (2B), the ball-end blade portion (22) is provided with double ball-end blades (2C), and the end blade portion (23) is provided with four end blades (2D).

2. The asymmetric milling cutter for machining continuous curved surfaces according to claim 1, characterized in that, The rake angle (D1) of the end blade (2D) is 0° to -35°, and the clearance angle (D2) of the end blade (2D) is 0° to -40°.

3. The asymmetric milling cutter for machining continuous curved surfaces according to claim 1, characterized in that, The end blade (2D) has a backing (c) on one side.

4. The asymmetric milling cutter for machining continuous curved surfaces according to claim 1, characterized in that, The end blade portion (23) occupies 2 / 15 of the cut length (L), and the ball-end blade portion (22) occupies 13 / 15 of the cut length (L).

5. The asymmetric milling cutter for machining continuous curved surfaces according to claim 1, characterized in that, The helix angle (a) of the chip removal groove (2e) is 45°.

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