Development of Deburring Technology with Whirling EDM - Influence of the Motor Rotational Speed Control Conditions and the Electrical Conditions on the Machining Characteristics
The authors developed Whirling Electrical Discharge Machining (Whirling EDM)  with the feedback circuit to control gap distance between tool electrode and workpiece. It was found that the probability of discharge was increased by feedback circuit . However, the motor rotational speed control conditions were not optimized and the machining characteristics were not clarified. In this paper, the rotational behavior of tool electrode in Whirling EDM was observed by high-speed camera, and it was considered that the influence of motor rotational speed control conditions on machining characteristics and the relationship between electrical conditions and machining characteristics. As a result, the discharge probability was able to be increased by decreasing range of motor rotational speed in feedback circuit. In addition, the machining characteristics of Whirling EDM which are influenced by electrical conditions were clarified.
Tojiro Aoyama, Hideki Aoyama, Atsushi Matsubara, Hayato Yoshioka and Libo Zhou
A. Nakayama et al., "Development of Deburring Technology with Whirling EDM - Influence of the Motor Rotational Speed Control Conditions and the Electrical Conditions on the Machining Characteristics", Key Engineering Materials, Vols. 523-524, pp. 293-298, 2012