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Development of High Precision Actuator for Micro Press System by Inchworm Motor  

Choi, Jong-Pil (강원대학교 기계메카트로닉스공학과 대학원)
Nam, Kwang-Sun (강원대학교 기계메카트로닉스공학과 대학원)
Lee, Hye-Jin (한국생산기술연구원 디지털 성형공정팀)
Lee, Nak-Gue (한국생산기술연구원 디지털 성형공정팀)
Kim, Byeong-Hee (강원대학교 기계메카트로닉스공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.18, no.2, 2009 , pp. 137-143 More about this Journal
Abstract
This paper presents the fabrication of inchworm motor for high precision actuator system of large displacement and high force. The inchworm motor consists of a extend actuator that provides displacement of tool guide and two clamping actuators which provide the holding force. In order to avoid the PZT fracture, design of pre-load housing was conducted by flexure hinge structure, because PZT actuator has low tensile and shear. To design the pre-load housing and optimize the clamping mechanism, the static and dynamic analysis were conducted by finite element method. From these results, a prototype of the inchworm motor was fabricated and dynamic characteristic with respect to the various frequency was tested. The maximum velocity of the inchworm motor was $41.1{\mu}m/s$ at 16Hz.
Keywords
Inchworm motor; Piezoelectric actuators; Pre-road; FEM(Finite Element Method);
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Times Cited By KSCI : 1  (Citation Analysis)
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