1 Scope
This document specifies methods for defining machining tests for manufacturing accurate
test pieces, and for evaluating the influence of quasi-static geometric errors of
linear axes and rotary axes, and the influence of the synchronization error of simultaneously
controlled multiple axes. Although quasi-static geometric errors are often major contributors
for geometric errors of finished test pieces, other factors, e.g. the dynamic contouring
error, can also have significant influence.
This document describes examples of test piece geometry applicable to individual machine
tools, possible contributors to machining error, deviations to be measured and measuring
instruments. By clarifying possible contributors to machining error in each machining
test, this document gives a guidance to machine tool manufacturers or users such that
proper machining tests can be chosen to evaluate a machine tool’s machining performance
in specified machining applications.
Machining tests to evaluate the geometric accuracy of a single surface are described
in Clause 5, and those to evaluate geometric relationship of multiple machining features are
described in Clause 6. Clause 7 presents machining tests for other objectives: machining tests for evaluation of
short-term capability (7.2), and machining tests for evaluation of thermal influence (7.3).