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Chatter Suppression in Parallel Turning With Unequal Pitch Using Observer Based Cutting Force Estimation

[+] Author Affiliations
Shinya Sakata, Takashi Kadota, Yuki Yamada, Yasuhiro Kakinuma

Keio University, Yokohama, Japan

Kenichi Nakanishi

Nakamura-Tome Precision Industry Co., Ltd., Hakusan, Japan

Hayato Yoshioka

Tokyo Institute of Technology, Tokyo, Japan

Norikazu Suzuki

Nagoya University, Nagoya, Japan

Paper No. MSEC2017-3054, pp. V003T04A056; 5 pages
doi:10.1115/MSEC2017-3054
From:
  • ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
  • Volume 3: Manufacturing Equipment and Systems
  • Los Angeles, California, USA, June 4–8, 2017
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5074-9
  • Copyright © 2017 by ASME

abstract

Parallel turning attracts attention as one of the important technologies for the multi-tasking machine tools. This is because there is a potential to enhance the stability limits compared to turning operation using single tool when cutting conditions are properly selected. Although stability prediction models for parallel turning have been developed in recent years, in-process monitoring technique of chatter is almost out of focus.

In this study, to suppress chatter vibration, unequal pitch turning method was proposed. In this method, the upper tool was controlled based on optimum pitch angle calculated from spindle speed and chatter frequency. Chatter frequency was identified from estimated cutting force by disturbance observer. From the result of parallel turning test, it is clear that chatter vibration can be suppressed by controlling the upper tool based on optimum pitch angle.

Copyright © 2017 by ASME
Topics: Turning , Chatter , Cutting

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