Assessment Of The Volumetric Accuracy Of A Machine With Geometric
Compensation
Author(s)
A.P. Longstaff S.R. Postlethwaite & D.G. Ford
Abstract
Assessment of the volumetric accuracy of a
machine with geometric compensation
A.P. Longstaff, S.R. Postlethwaite & D.G. Ford
Precision Engineering Centre, University of Huddersfield, England
Abstract
In a production environment it is important to be able to quantify the accuracy of
all machines in order to estimate the production capability of the company as a
whole. A measure of machine production capability is volumetric accuracy,
which is effectively a combination of all sources of geometric error.
The requirement for ever tighter tolerances on manufactured parts has led to
the development of several systems capable of compensating for the effects of
geometric errors inherent in machine tools and CMMs. This is usually achieved
by making linear correction actuations to the orthogonal axes at each point
throughout the working volume, dependent upon the magnitude of the sum of the
errors in that axis direction.
This paper discusses the problems involved in assessing the vol
Keywords
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