Actions for Defining and Testing the Influence of Servo System Response on Machine Tool Compliance [electronic resource].

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Defining and Testing the Influence of Servo System Response on Machine Tool Compliance [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
PDF-file: 8 pages; size: 0.7 Mbytes
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Compliance can be defined as the measurement of displacement per unit of force applied e.g. nano-meters per Newton (m/N). Compliance is the reciprocal of stiffness. High stiffness means low compliance and visa versa. It is an important factor in machine tool characteristics because it reflects the ability of the machine axis to maintain a desired position as it encounters a force or torque. Static compliance is a measurement made with a constant force applied e.g. the average depth of cut. Dynamic compliance is a measurement made as a function of frequency, e.g. a fast too servo (FTS) that applies a varying cutting force or load, interrupted cuts and external disturbances such as ground vibrations or air conditioning induced forces on the machine. Compliance can be defined for both a linear and rotary axis of a machine tool. However, to properly define compliance for a rotary axis, the axis must allow a commanded angular position. Note that this excludes velocity only axes. In this paper, several factors are discussed that affect compliance but emphasis is placed on how the machine servo system plays a key role in compliance at low to mid frequency regions. The paper discusses several techniques for measuring compliance and provides examples of results from these measurements.
Report Numbers
E 1.99:ucrl-proc-203189
ucrl-proc-203189
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Note
Published through SciTech Connect.
03/24/2004.
"ucrl-proc-203189"
Presented at: ASPE Spring Topical Meeting, Control of Precision Systems, Cambridge, MA, United States, Apr 19 - Apr 20, 2004.
Hopkins, D J.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14104304