Ultrasonic vibration cup-shaped grinding wheel dresser for dressing super-hard abrasive grinding wheel

Abstract

The invention relates to an ultrasonic vibration cup-shaped grinding wheel dresser for dressing a super-hard abrasive grinding wheel. The grinding wheel dresser comprises an ultrasonic generator and a base, wherein a variable-frequency motor and a cylinder body are arranged on the base, the central line of the cylinder body is arranged in a vertical direction, and a cover plate is connected to the upper end of the cylinder body through a flange; a hollow shaft with an open upper-end and a plugged lower-end is coaxially arranged in the cylinder body, a bearing is arranged between the inner wall of the cylinder body and the outer wall of the hollow shaft, and the variable-frequency motor is in transmission connection with the lower end of the hollow shaft; an ultrasonic transducer and an amplitude-change pole are arranged in the hollow haft, the outside of the amplitude-change pole is fixedly arranged on the hollow shaft through a detachable connection structure, and the upper end of the amplitude-change pole is upward and penetrates the cover plate, and a top-opened cup-shaped grinding wheel is fixedly coaxially arranged at the upper end of the amplitude-change pole. The grinding wheel dresser provides ultrasonic vibration in the axial direction, therefore, the microstructure of the dressed grinding wheel can be well improved, dressing of abrasive particles is completed while shaping is completed, grinding heat and power consumption are beneficially reduced, blockage to the grinding wheel and dressing burns are avoided, and the service life of the external circular grinding wheel is prolonged.

Description

technical field [0001] The invention belongs to the technical field of precision grinding, and in particular relates to an ultrasonic vibrating cup-type grinding wheel dresser for dressing superhard abrasive grinding wheels. Background technique [0002] The key to grinding wheel dressing is to obtain high precision and good shape. Micropowder superabrasive grinding wheel has a dense internal structure and fine abrasive grains. It is difficult to achieve the ideal shape of the grinding wheel by traditional dressing methods, and the dressing efficiency is low and the quality is unstable. With the ordinary dressing method, the dressing tool head and the grinding wheel wear quickly, and the labor intensity in the dressing process is high, the grinding wheel is easy to block, and defects such as dressing burns occur. [0003] Ultrasonic machining is a material removal processing method that uses an acoustic system to convert electrical signals into ultrasonic small-amplitude vi...

AI Technical Summary

Problems solved by technology

This method has small processing force, low processing temperature, and small surface damage and residual stress. At present, it is mainly used for external cylindrical ultrasonic cutting and grinding, and has not been used for superhard abrasive external grinding wheel dressing.

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