Study on Micro-positioning Control System Based on Piezoceramic in Dry-ECD Assisted Truing and Dressing of Diamond Wheel

摘要

A novel truing and dressing method, namely dry electrical discharge (dry-ECD) assisted truing and dressing, is proposed to overcome the shortcomings associated with conventional mechanical dressing methods, ELID and ECD methods. A closed loop control system for the micro-displacement outfit of piezoelectric ceramic is designed especially. Basing on the micro-displacement control system software, it can maintain continuous discharge between the tool electrode and the diamond wheel in dry-ECD automatically.Experimental results also show that the voltage wave-form between the tool electrode and diamond wheel is continuous in dry-ECD assisted truing and dressing diamond wheel with the micro-displacement control system.