Author(s)

Y. Wang, X. Chen, Q. Liu & N. Gindy

Abstract

Fixture evaluation is an important part of a fixture design and manufacture, because it provides quantitative information of fixturing errors. Such mformation is usefil for the validation of theoretical analysis and the evaluation of the fixture performance. It also provides suggestion of fixture improvement. The evaluation of fixture performance includes checking workpiece loading repeatability, workpiece distortion, and examining the workpiece movement caused by clamping and machining force. A coordinate measurement machme (CMM) measurement method for fixture evaluation was developed based on the transformation of coordinate systems (CS) and the measurement of datum displacements. A turbine blade fixture was assessed as an example. 1 Introduction Fixtures are used to locate and to hold one or several workpieces for machining. Locat

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