PCD spiral ball-end cutter

Abstract

The invention relates to a PCD spiral ball-end cutter which comprises a handle and a cutting part integrally formed at one end of the handle, wherein the handle and the cutting part have a same rotating center shaft; two spiral chip grooves in reverse symmetry are formed in the cutting part around the rotating center shaft, an arc chamfer and two guide faces are formed on the cutting part by being far away from the handle, the two guide faces are arranged with an acute angle, two arc cutting faces which are located between the two guide faces are symmetrically arranged on the cutting part; and one section of the cutting part, far away from the handle, is made from PCD material, and the section of cutting part made from the PCD material is welded with the residual section of cutting part. The PCD spiral ball-end cutter is reasonable in structure design, efficient drilling operation can be achieved for a workpiece due to the arrangement of the two spiral chip grooves in reverse symmetry and the cutting part with two arc cutting faces, and during drilling, the section of milling part made from the PCD material is small in affinity with a metal material, the phenomenon of chip adhering caused by drilling cannot easily occur, abrasion is not easy to cause, and the dimensional accuracy and the degree of finish of a machined aperture are good.

Description

technical field [0001] The invention relates to a ball-end cutter, in particular to a PCD spiral ball-end cutter. Background technique [0002] In recent years, with the development of science and technology, the machinery manufacturing industry has higher and higher requirements for machining accuracy. As a common tool for machining, the structure of the drill bit not only determines its own strength and service life, but also determines the drill bit. The error size and precision of the workpiece hole. [0003] In aerospace, aviation, military industry, and automobile fields, a large number of composite materials are used, and the dimensional accuracy and smoothness of the machining aperture are required to be high. At the same time, the technical requirements and service life of the machining tool itself are getting higher and higher. The existing carbide drill bit Although the processing can meet some requirements, but due to the rapid wear and tear during the processin...

AI Technical Summary

Problems solved by technology

[0003] In the fields of aerospace, aviation, military industry, and automobiles, a large number of composite materials are used, which require high dimensional accuracy and smoothness of the machining aperture. At the same time, the technical requirements and service life of the machining tool itself are getting higher and higher. The existing carbide drill bit Although the processing can meet some requirements, due to the rapid wear and tear during the processing process, the hole size of the product is not consistent, and the defect rate is high

In addition, due to the unreasonable design of the existing drill bit structure, it affects its own strength and service life

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