Manufacturing method of high-strength end mill cutting edge and double-front-angle end mill

Abstract

The invention discloses a manufacturing method of a high-strength end mill cutting edge and a double-front-angle end mill. To manufacture a cutting edge of an end mill (1) with a spiral groove, a main front angle (1.1) is firstly manufactured on the cutting edge of the end mill (1), an auxiliary front angle (1.2) is then manufactured on the main front angle (1.1), and the angle (alpha) of the main front angle (1.1) is greater than the angle (beta) of the auxiliary front angle (1.2). The cutting edge disclosed by the invention not only can effectively improve the end mill cutting edge strength and the processing fineness, but also has the advantages of simple processing technology, relatively low manufacturing cost and relatively long service life.

Description

technical field [0001] The invention relates to a method for manufacturing a high-strength end mill cutting edge and a double rake end mill, belonging to the technical field of end mill manufacture. Background technique [0002] In the process of metal cutting, the cutting layer is deformed by the extrusion of the cutting edge, and the chips flow along the rake face to the spiral chip flute to be removed, and the parts that are most prone to damage and wear are generally at the cutting edge and the distance from the cutting edge. The closest is the rake face. At present, the shape of the cutting edge on the traditional end mill is mainly determined by the rake angle and the relief angle. When the rake angle and the relief angle of the cutting edge of the end mill are determined, in the same In the case of the same material and processing technology, the strength of the cutting edge of the end mill is also determined. In order to enhance the strength of the cutting edge of th...

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Problems solved by technology

[0002] During the metal cutting process, the cutting layer is deformed through the extrusion of the cutting edge, and the chips flow along the rake face to the spiral chip flute for removal, and the most likely to occur The damaged and worn parts are generally on the cutting edge and the rake face closer to the edge. At present, the shape of the cutting edge on traditional end milling tools is mainly determined by the rake angle and the rear angle. After the rake angle and relief angle of the cutting edge of the milling cutter are determined, the strength of the cutting edge of the end mill is also determined under the same material and the same processing technology. In order to enhance the strength of the cutting edge of the end mill, in the existing In the technology, the cutting edge of the end mill is often achieved by passivation treatment. Although this method can improve the strength of the cutting edge, it has the disadvantages of complicated processing technology and difficult control. However, the use of CNC passivation machine production, there is a disadvantage of high cost, and when the passivated end mill is processed, it is also prone to the problem of reducing the surface finish of the parts processed by the end mill

Therefore, the existing end mill manufacturing technology is not ideal enough.

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