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High Precision Hybyid Technology Using Dual-Stage of Linear Motor and Piezo-Actuator for Milling Machine

[+] Author Affiliations
B. M. Chung, I. J. Yeo, T. J. Ko

Yeungnam University, Gyoungsan, Korea

J. K. Park

Korea Institute of Machinery & Materials, Yuseong, South Korea

Paper No. MSEC2007-31028, pp. 221-226; 6 pages
doi:10.1115/MSEC2007-31028
From:
  • ASME 2007 International Manufacturing Science and Engineering Conference
  • ASME 2007 International Manufacturing Science and Engineering Conference
  • Atlanta, Georgia, USA, October 15–18, 2007
  • Conference Sponsors: Manufacturing Division
  • ISBN: 0-7918-4290-8 | eISBN: 0-7918-3809-9
  • Copyright © 2007 by ASME

abstract

High precision machining technology has become one of the important parts in the development of a precision machine. Such a machine requires high speed on a large workspace as well as high precision positioning. For machining systems having a long stroke with ultra precision, a dual-stage system including a global stage (coarse stage) and a micro stage (fine stage) is designed in this paper. Though linear motors have a long stroke and high precision feed drivers, they have some limitations for submicron positioning. Piezo-actuators with high precision also have severe disadvantage for the travel range, and the stroke is limited to a few microns. In the milling experiments, the positional accuracy has been readily achieved within 0.2 micron over the typical 20 mm stroke, and the path error over 2 micron was reduced within 0.2 micron. Therefore, this technique can be applied to develop high precision positioning and machining in the micro manufacturing and machining system.

Copyright © 2007 by ASME

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