Novel PCBN cutter capable of being repeatedly ground and used

Abstract

The invention discloses a novel PCBN cutter capable of being repeatedly ground and used. The novel PCBN cutter comprises a blade and a cutter bar, wherein the blade is divided into a cutter head and abase body; the upper surface of the base body is defined by a connecting edge, a first side edge and a second side edge, the upper surface of the cutter head is defined by a first cutting edge, a second cutting edge and an arc edge, and two sides of the connecting edge are correspondingly connected with the first cutting edge and the second cutting edge; and a cutting edge tool nose angle Theta 1is formed between the first cutting edge and the second cutting edge, and a positioning edge included angle Theta 2 is formed between the first side edge and the second side edge. Due to the specialdesign of the cutting edge, an included angle is formed between the cutter connecting edge and the cutting edge, so that the cutter is repeatedly ground for multiple times under the condition that a positioning surface is not ground, and accurate clamping and positioning can be ensured under the condition that the cutter bar is not replaced. A deflection angle Theta 3 is arranged between Theta 1 and Theta 2, a non-standard blade can be customized to adjust the tool cutting edge angle under the condition that the cutter bar is not replaced, repeated utilization of the cutter is achieved, the cutter cost is reduced, the types of the cutter bars are reduced, and the cost performance of the cutter is improved.

Description

technical field [0001] The invention relates to the technical field of processing tools, in particular to a novel PCBN tool that can be used for multiple times of grinding. Background technique [0002] PCBN (polycrystalline cubic boron nitride) cutting tools are widely used in the field of cutting high-hardness materials and difficult-to-machine materials due to their superior cutting performance. More than 2 times that of knives. Although PCBN tools have obvious advantages in tool life and processing efficiency, due to their harsh preparation conditions and expensive raw materials, the price of ordinary single-edged PCBN blades is more than 4 times that of ordinary single-edged alloy blades. [0003] Due to the superior performance of PCBN knives but the high price, it is usually necessary to regrind the used blades and then reuse them. However, there are only ISO standard tool cutting parts and parallel collinear structures on the market at present, and tool grinding re...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a new type of PCBN tool that can be used for multiple grinding, so as to solve the problem that the existing tool cannot be ground or needs to be replaced after grinding.

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