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White Papers
Machine Tool and Motion Error Standardized Definitions for
Simplified Error Modeling
by Robert Callaghan
Abstract:
Error models for
the purposes of understanding and correcting machine motion errors have been
used for many years. Most of these models have been developed to define and
improve the behavior of specific laboratory devices or commercial products. The
adaptation of Error Modeling for general use in factory applications requires
the incorporation of a wide variety of machine configurations. Some of these
machines and their errors are described in ISO and ANSI Standards.
The current
limited number of machine configurations defined in these standards reduces the
effective application of standards when new configurations are developed. This
paper proposes more generalized methods for naming machines and their errors as
well as error sign conventions, to permit a wider application of models. The
measurement of a machine is often limited to a few errors by the instrumentation
available. These generalized methods also facilitate communication of the wide
variety of error measurements necessary for comprehensive diagnostics and
corrections. The research funding to create these conventions has been provided
to Independent Quality Labs, Inc. (IQL) by the US Army Research Laboratories in
Aberdeen, MD.
Note: Use of the contents of this paper is with
permission only.
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