Ultrasonic-Assisted Grinding (A Possible New Method for Machining Space Age Materials).

摘要

Operators of grinding equipment have long known that deliberately induced vibrations in a grinding wheel will increase the rate of metal removal. In violation of safety rules, piece-rate workers have sometimes made adjuttments to equipment to set up vibrations and hasten the grinding of hard materials. It now appears that this phenomenon observed first by non-scientifically trained workmen can be put to work constructively and safely to help metalworking companies qrind the new high-strength, thermal-resistant metals that have been developed for inflitary, aerospace, and advanced industrial purposes. But rather than throwing a wheel off balance or employing some other dangerous practice to induce vibration, ultrasonic energy will be used to effect this end and speed up metal removal. The process, which is currently in the research state, is called 'ultrasonic- assisted' grinding or 'assist' grinding by the technologists working on the development. It should not be confused with 'ultrasonic impact grinding' also called 'ultrasonic machining' which is a well-established production process.