Suppression of Drill Wear at the Hole Bottom in Intelligent Machine Tools
 
Makoto Fujishima (Mori Seiki Co. Ltd.)
Soichiro Fukui (Mori Seiki Co. Ltd.)
Yoshiaki Kakino (Kyoto University)
Soichi Ibaraki (Kyoto University)
Iwao Yamaji (Kyoto University)
Heisaburo Nakagawa (The University of Shiga Prefecture)
Toshiki Hirogaki (The University of Shiga Prefecture)
  
 
 
Abstract

The influence of the rubbing time on the tool wear of the drilling is studied, and it has been understood that the rubbing time produces a big influence on the tool wear. The system, which shortens the rubbing time with intelligent machine tool by quick retraction at the bottom of the hole, has been developed. By using this system the tool life was increased by 85% from the conventional model.