Manufacturing method of polycrystalline diamond integral cutter

Abstract

The invention relates to a manufacturing method of a polycrystalline diamond integral cutter. The manufacturing method comprises the steps of grinding a clamping handle blank into a reference clampinghandle; centering, aligning and clamping a polycrystalline diamond cutter head blank and the reference clamping handle, and then performing vacuum welding; grinding the polycrystalline diamond cutterhead blank to preset precision by using the reference clamping handle as the reference; and forming a plurality of cutting edges which are annularly distributed one by one and chip grooves which arelocated among the cutting edges in one end, which is far from the reference clamping handle, of the polycrystalline diamond cutter head blank through laser cutting so as to obtain the polycrystallinediamond integral cutter, wherein the width of the cutting edges is 0.04 to 0.1 mm, the surface roughness Ra of the cutting edges is 0.1 to 0.4 mum, and the depth of the chip grooves is 0.08 to 0.15 mm. The polycrystalline diamond integral cutter prepared by adopting the manufacturing method of the polycrystalline diamond integral cutter is of an integrated multiple-cutting-edge structure, is favorable for improving the machining efficiency and prolonging the service life and guaranteeing the ideal machining quality, has good economic benefits, is favorable for popularization and application and is especially suitable for glass or ceramic machining.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, and specifically relates to a method for manufacturing a polycrystalline diamond integral cutting tool. Background technique [0002] Diamond has been used as a superhard tool material in cutting for hundreds of years, but natural diamond is scarce and expensive, and it is difficult to meet the needs of a large number of applications. Polycrystalline diamond (Polycrystalline diamond) is a kind of artificial diamond, which is used to replace natural diamond (single crystal). fields. [0003] The traditional polycrystalline diamond tool is made by welding the tip of the polycrystalline diamond composite sheet to the carbide blade or the base of the tool holder. In the application of multi-blade cutting tools, multiple polycrystalline diamond composite blade tips need to be welded separately. Due to the limited layout space, it is easy to cause insufficient welding strength and precision, wh...

AI Technical Summary

Problems solved by technology

In the application of multi-edge cutting tools, multiple polycrystalline diamond composite blade tips need to be welded separately. Due to the limited layout space, it is easy to cause insufficient welding strength and precision, which affects cutting quality and service life.

At the same time, the welded structure requires a specific operating space, and it is difficult to achieve an ideal layout in the application requirements of rapidly increasing number of blades, and cannot adapt to the development trend of high-precision and long-life cutting tools

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