Cutting tool

Abstract

The invention relates to the field of machining, in particular to a cutting tool. The cutting tool includes a tool rod and a cutting portion; the cutting portion is fixedly arranged at one end of thetool rod; the cutting portion is internally provided with a groove-shaped containing zone, the upper and lower step surfaces of the containing zone are a first step surface and a second step surface correspondingly, the first step surface and the second step surface are connected through a transition surface, the transition surface is an arc-shaped plane, and the containing zone is half opened; the first step surface is provided with a first threaded hole, a blade is arranged in the containing zone, and the blade is provided with a through hole; and the blade and the first threaded hole are fixedly connected through a first bolt. By means of the arrangement, the one-sided torque applied by the blade to the first bolt in the cutting process can be effectively offset, uniform stress of the first bolt can be ensured, and the service life is long. The design also has the advantages of the simple structure, easy processing and low cost.

Description

technical field [0001] The invention relates to the field of machining, in particular to a cutting tool. Background technique [0002] Cutting tools are tools used for cutting in mechanical manufacturing. The vast majority of knives are for machine use, but some are also for hand use. Since the knives used in mechanical manufacturing are basically used to cut metal materials, the term "knife" is generally understood as a metal cutting tool. [0003] The structure of various tools is composed of a clamping part and a working part. The clamping part and the working part of the integral structure tool are all made on the cutter body; the working part (knife tooth or blade) of the insert structure tool is mounted on the cutter body. Simultaneously, there is also the use that the blade and the cutter body are fixedly connected together by screws. Due to the extremely high hardness of the cemented carbide blade, during cutting, the blade will exert a continuous torque on the b...

AI Technical Summary

Problems solved by technology

Due to the extremely high hardness of the cemented carbide blade, during cutting, the blade will exert a continuous torque on the bolts that fix the blade and the cutter body under the long-term rotation of the workpiece during cutting, and long-term processing will cause fatigue to the bolts Damage, easy to cause bolt breakage, affecting the normal processing and production

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