1999 / Solid Freeform Fabrication Proceedings
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Author Sangeun Choi, Wyatt S. Newman, Case Western Reserve University
Source Solid Freeform Fabrication Proceedings, 1999, pp 663-670
Abstract This paper presents the recent redesign of a tangent-cutting machine for CAM-LEM (Computer-Aided Manufacturing of Laminated Engineering Materials). Our former 5-axis, serial-joint, open-chain mechanism for laser cutting has been reduced to two parallel, 2-axis kinematic chains and articulated optics. The redesign results in lower inertias, higher stiffnesses, and less calibration sensitivity to homing and misalignment of axes. As a result, the system has higher acceleration capability, higher tracking bandwidth (translating into faster laser cutting) and greater precision, enabling improved build rates. The new design is presented, along with experimental evaluation of the performance improvements. Performance improvements are quantified in terms of calibration sensitivity, tracking bandwidth, and resonant frequencies. (Auth abstract) [References: 14]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu