Composite bond grinding wheel dressing device and method

Abstract

The invention discloses a composite bond grinding wheel dressing device and method, including a high-precision turntable and a control system. An electric spark dressing module and an ultrasonic dressing module are respectively arranged above the two sides of the high-precision turntable, and the electric spark module includes a Z1 linear motor. , X1-axis linear motor, pulse power supply, electrode motor, electrode, first grating ruler and first laser positioner. In the present invention, high-temperature discharge and carbonization are first performed on the composite bond grinding wheel by a pulse power supply, but the ceramic materials and wear-resistant inorganic fillers in the composite bond have high melting points and carbonization adhesion, and the carbonization residue adhesion after electric processing is not easy to throw away; then use ultrasonic The cavitation phenomenon of the method removes the carbonized adhesion layer on the end face of the composite bond grinding wheel block, and then performs further electrical machining and trimming, which is non-contact machining. The invention solves the problems that the grinding wheel of the composite bonded grinding wheel is dropped due to processing, internal cracks are generated, and the internal structure is damaged by processing heat.

Description

technical field [0001] The invention relates to the technical field of grinding wheel dressing, in particular to a dressing device and method for a composite bond grinding wheel. Background technique [0002] At present, superhard grinding wheels are dressing tools with diamond and CBN as the main medium, which play a vital role in the industry. Mainly divided into: resin bond, vitrified bond, metal bond and electroplating grinding wheel. Each bond has unique properties, among which, the bonded metal bond grinding wheel has high strength, good formability, good wear resistance, long working life, high temperature resistance, good thermal conductivity, but poor self-sharpening, low holding force, Difficult to trim and easy to burn workpieces; ceramic bond has the characteristics of high grinding efficiency, good self-sharpening, and high temperature resistance, but the bond itself has low strength and low bonding strength between bond and diamond interface. With the increas...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of composite bond grinding wheel dressing device and method, can realize the dressing of composite bond grinding wheel for sapphire, silicon chip, silicon carbide, gallium arsenide, germanium wafer, etc., solve the problem of composite bond grinding wheel Hard, brittle, loose and other characteristics lead to low processing efficiency, easy to cause the grinding wheel to fall off, internal cracks, and processing heat to destroy the internal structure.

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