Ultrasonic laser composite dressing device for superabrasive grinding wheel

Abstract

The invention discloses an ultrasonic laser composite dressing device for a superabrasive grinding wheel. The ultrasonic laser composite dressing device is mainly formed by an ultrasonic vibration dressing system, a laser transmitting system and a lathe bed. A laser transmitter transmits energy to a laser focusing head with a focusing head fixing and adjusting device through optical fibers, laser beams are focused during work to heat the rotating grinding wheel in front of a dressing point at proper energy density for proper heating time, an ultrasonic generator transmits an ultrasonic frequency signal to an ultrasonic transducer, the ultrasonic frequency signal is converted into mechanical vibration through the transducer to be transmitted to an amplitude-change pole, waves, generating longitudinal vibration, of the amplitude-change pole will be decomposed at the position, where a diamond slot is formed, of the small end, the vibration type involves longitudinal vibration and bending vibration, composite elliptical ultrasonic vibration is formed at the point of a diamond dressing stylus for dressing, and after the dressing stylus completely disengages from the grinding wheel, the dressing stylus will be moved to the position where dressing is started for the next time and starts dressing for the next round. In the dressing process, under the recombination action of ultrasonic vibration and laser auxiliary heating, removal of partial materials of the grinding wheel is changed from brittle removal into plastic removal, cutting force is reduced, abrasion to the dressing stylus is reduced, and the dressing efficiency and dressing result are improved.

Description

technical field [0001] The invention relates to a laser composite dressing device for superhard abrasive grinding wheels, which is suitable for precise and efficient dressing of compact superhard grinding wheels, especially for precise and efficient dressing of diamond grinding wheels and CBN grinding wheels. Background technique [0002] At present, with the development of science and technology and industry, difficult-to-machine materials with excellent properties have been widely used in aviation, aerospace, navigation, petroleum, chemical, automotive and other industrial sectors. Efficient and precise machining of these difficult-to-machine materials has become one of the current research hotspots. Due to the difficult machining characteristics of superhard materials and the improvement of processing accuracy requirements, the demand for grinding, especially the efficient and precise grinding of these materials with superabrasive grinding wheels is increasing. In the ac...

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Problems solved by technology

Although these methods have improved the grinding quality to a certain extent and reduced the wear of the grinding wheel, with the improvement of the requirements of practicability, convenience, high-efficiency precision machining and the characteristics of the high hardness of the superabrasive grinding wheel itself, these dressing methods or Due to excessive wear of dressing tools, low efficiency, poor dressing accuracy or expensive dressing equipment, there are certain limitations in the actual dressing process

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