CBN cutting tool bit for sintered steels

Abstract

The invention relates to a cubic boron nitride (CBN) cutting tool bit for sintered steels, and belongs to cutting tool bits. The CBN cutting tool bit is characterized by mainly comprising working layers (cutting bodies) and a non-working layer (a non-cutting body) which are manufactured into a whole, wherein the non-working layer which is in a cuboid shape is arranged on the lower end part of the cutting tool bit and consists of metal bonding agent powder; the working layers (the cutting bodies) which are in a corrugated shape are arranged on the upper part of the non-working layer vertically from left to right; the adjacent bevel edges of the corrugated working layers are intersected with one another at an included angle of between 30 and 120 DEG, and intersected parts are distributed on the non-working layer uniformly in a front and back misplaced mode; the included angle of between 60 and 90 DEG among the adjacent bevel edges of the corrugated working layers is the optimum; gaps among the intersected bevel edges are used as chip grooves; steel wires or steel sheets are vertically arranged on front and rear side parts in the corrugated working layers sequentially; CBN serving as hard materials is arranged between front and rear rows of steel wires or steel sheets; and the steel wires or the steel sheets and the CBN are coated by a metal sintered layer, so that the steels can be cut stably at high speed, and the work efficiency is high.

Description

technical field [0001] The invention belongs to a cutting head, in particular to a steel material cutting head. Background technique [0002] Existing steel, especially the cutting blades used for various pipes, bars and profiles, are usually high-speed circular saw blades, which are divided into two categories: 1. Aluminum oxide, silicon carbide resin bonded cutting blades , the cutting disc is easy to pollute the environment during the cutting process, and is a high energy consumption product, which has been gradually replaced by the low energy consumption CBN superhard material; 2. The circular saw made of a steel plate called a toothless saw: the material The 65Mn disc-shaped steel plate is uniformly milled with sawtooth on its circumference. The sawtooth is quenched by high frequency or flame. During the process of sawing steel, the sawtooth is worn for 1 / 3 and then re-quenched and quenched. Generally, it is reused for 2— It will be scrapped after 5 times. The disc-sha...

AI Technical Summary

Problems solved by technology

[0002] Existing steel, especially the cutting blades used for various pipes, bars and profiles, are usually high-speed circular saw blades, which are divided into two categories: 1. Aluminum oxide, silicon carbide resin bond cutting blades , the cutting disc is easy to pollute the environment during the cutting process, and is a high energy consumption product, which has been gradually replaced by the low energy consumption CBN superhard material; 2. The circular saw made of a steel plate called a toothless saw: the material The 65Mn disc-shaped steel plate is uniformly milled with saw teeth on its circumference. The saw teeth are quenched by high frequency or flame. During the sawing process of steel, the saw teeth are worn for 1 / 3 and then re-cut and quenched. Generally, they are reused for 2— It will be scrapped after 5 times. The disc-shaped steel plate is thick and consumes a lot of power, and it consumes a lot of electric power during the sawing process. In addition, the existing diamond cutter head has affinity between diamond and Fe group metals at high speed. It is viscous, and the diamond tip cannot be used for high-speed cutting of steel

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