Trepanning tool with self-air cooling and chip removing functions

Abstract

The invention discloses a trepanning tool with self-air cooling and chip removing functions. The upper end face of the trepanning tool is provided with an impeller with blades; the impeller consists of more than two blades with an angle in the shapes of a flat surface or a curved surface; the inclination angle is in a clockwise direction or an anticlockwise direction according to outward exhaust or inward suction; the trepanning tool has a split structure, namely comprises a cutter handle with the impeller and a trepanning head with a diamond abrasive, which are in threaded connection; a cutting part with abrasive particles consists of super-hard abrasive particles subjected to electroplating or hot-pressing sintering; the thickness of the cutting part is greater than that of a barrel wall substrate; and the end face of the cutting part is provided with more than two chip removing grooves. The trepanning tool can obviously reduce friction between cuttings and a cutter, and between the cuttings and a material substrate, reduces the temperature of a cutting area, timely takes the cuttings away, effectively slows down the blockage of the cutter, and fulfills the aim of low-damage and high-efficiency processing; meanwhile, the manufacturing cost and the using cost of the cutter can be obviously reduced due to the split structure.

Description

technical field [0001] The invention relates to a tool for material processing, in particular to a dry-type nesting tool for processing deep holes in fiber-reinforced composite materials with large apertures and difficult chip removal. Background technique [0002] A trepanning drill is a tool that processes holes in materials in a circular cutting manner. The nesting process can leave the material core, which can save materials and reduce the power consumption of the machine tool at the same time. Due to the high processing efficiency and processing quality of the casing drill, and can effectively reduce the processing cost, the casing drill is widely used in the processing of metal, glass, stone, cement prefabricated parts, and various materials such as composite materials. , especially the nesting processing of large diameter and deep holes. [0003] When machining composite materials, dry machining is often required. Since the reinforcing fibers or particles in compos...

AI Technical Summary

Problems solved by technology

In addition, when processing composite materials, the cutting part of nesting processing is usually superhard abrasive grains that are electroplated or hot-pressed and sintered, that is, the material is removed by grinding, which further aggravates the generation of cutting heat.

At the same time, under the action of cutting heat, the chips will soften and block the gaps of the abrasive grains in the cutting part, leading to premature failure of the nesting tool or aggravating the wear of the tool

[0006] It can be seen that when using a nesting drill to process composite materials, the high temperature in the cutting area and the accumulation of chips greatly affect the processing efficiency and quality of the nesting drill and the service life of the tool.

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