Development of fast tool servo system for milling process

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360052
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: YOSHIOKA Hayato 東京工業大学, 理工学研究科, 准教授 (90361758)
• Co-Investigator(Kenkyū-buntansha): SHINNO Hidenori 東京工業大学, 精密工学研究所, 教授 (40196639) ; SAWANO Hiroshi 東京工業大学, 精密工学研究所, 助教 (40514295)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 位置決め / 工具サーボ / 回転主軸 / 超磁歪素子 / 工作機械

Outline of Final Research Achievements

Demands for machining three-dimensional geometries have increased. It is difficult to apply a fast tool servo technique to milling process by rotational tools. This research aims to develop a new tool servo technology. The new concept of tool servo driven by a giant magnetostrictive actuator was proposed in this project, and a prototype system was developed. The developed mechanism can be characterized by a compact structure, a noncontact structure, and high accuracy. Performance evaluation results confirm that the developed tool servo system provides precise linear motion during rotating. Furthermore, to realize the positioning without additional displacement sensors a new estimating method of displacement using a magnetostrictive actuator as a sensor device was also proposed, and the experimental results shows that the method can estimate deformation of actuator and be used for feedback.

Free Research Field

精密機械