CAD/CAM-based position/force controller for a mold polishing robot

Fusaomi Nagata, Tetsuo Hase, Zenku Haga, Masaaki Omoto, Keigo Watanabe

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

Control of robotic mold polishing is considered in this paper. CAD/CAM-based position/force controller that simultaneously performs stable force control and exact pick feed control along curved surface is presented for a mold polishing robot. The force feedback loop controls the polishing force consisting of the contact and kinetic friction forces. During the mold polishing, the position feedback loop has a delicate contribution to the force feedback loop in Cartesian space so that the abrasive tool does not deviate from the desired trajectory and keeps a constant pick feed, e.g., 0.2 mm. When the robot with the CAD/CAM-based position/force controller runs, cutter location (CL) data with normal vectors, called multi-axis CL data, are used for not only a desired trajectory of tool translational motion but also desired contact directions given to a mold. The multi-axis CL data allow the mold polishing robot to realize a complete non-taught operation of the position and contact direction. The experimental results show that the CAD/CAM-based position/force control method achieves successful robotic mold polishing with curved surface.

Original languageEnglish
Pages (from-to)207-216
Number of pages10
JournalMechatronics
Volume17
Issue number4-5
DOIs
Publication statusPublished - May 1 2007
Externally publishedYes

Keywords

  • CAD/CAM
  • Cutter location data
  • Industrial robot
  • Mold polishing robot
  • Non-taught operation
  • Position/force control

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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