PCD cutter for machining composite material

Abstract

The invention discloses a PCD cutter for machining a composite material. The PCD cutter comprises a cutter body and welding pieces. In a cutting part of the cutter body, the end of the free end of the cutting part linearly extends towards a handle part to form at least one chip groove, the face, facing the cutting rotation direction, of each chip groove is set as a first welding face, and one welding piece is welded and fixed to the first welding face of each chip groove; the face, facing the cutting rotation direction, of each welding piece is a cutting front tool face, the cutting front tool face of each welding piece is in a non-flat-straight face shape, the projection of the cutting front tool face of each welding piece on a first reference plane perpendicular to the axis of the cutter is a line segment, and the line segment is an arc line or a curve, or a combination of more than two of a straight line, an arc line, a regular curve and an irregular curve. By means of the PCD cutter, the sharpness of the cutter can be effectively improved, the cutting force of the cutter is reduced, and the cutting efficiency is improved; and burrs generated when the cutter is used for machining the composite material can be effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a PCD cutting tool for processing composite materials. Background technique [0002] A cutting tool is a tool used for cutting in mechanical manufacturing, also known as a cutting tool. PCD knives usually refer to knives made of artificial diamond, that is, knives made of polycrystalline diamond, while polycrystalline diamond (PCD) is synthesized by people using high-pressure synthesis technology. Diamond tools have the characteristics of high hardness, high compressive strength, good thermal conductivity and wear resistance, and can obtain high machining accuracy and processing efficiency in high-speed cutting. Therefore, diamond tools are widely used in aviation, aerospace, automotive, etc. , electronics, stone and many other fields. A kind of PCD tool in the prior art is to fix the welding piece with cutting edge on the cutter body, and the welding piece is made of sup...

AI Technical Summary

Problems solved by technology

A kind of PCD tool in the prior art is to fix the welding piece with cutting edge on the cutter body, and the welding piece is made of superhard materials such as diamond. Since the welding piece of the existing PCD tool is usually flat, this makes the welding piece The rake face of the machine is flat and straight. Although such a PCD tool is simple to process, it has a large cutting force. Especially when it is used to process composite materials, it is easy to have a lot of burrs on the machined surface. This PCD tool in the prior art, There are disadvantages such as poor processing efficiency and poor processing quality

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