PROCESS CONTROL ORIENTED GEOMETRIC PRODUCT SPECIFICATION AND DATA ANALYSIS

R. Schmitt, H. Zheng, S. Nisch

Abstract

There is an increasing desire for an automatable milling process, which could optimize itself based on measurement data and adjust itself to the varying ambient conditions. However, the current ISO-tolerancing system is not suitable for the automated process control. Without the intervention of operators, who interpret the data and determine the correction factors, measurement data cannot be used for the process control. In this paper, a process control oriented geometric product specification, tightly connected with measurement results, is proposed. Experiments on milled cylindrical workpieces are carried out and the results show that, with the specification and its characteristic values, the process errors can be directly identified individually from the measurement results. It also shows the potential for automated process control by correcting these deviations through compensation function of the milling machine.

Keywords

geometric product descriptions, process control, coordinate metrology, measurement strategy

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IMEKO-WC-2012-TC14-O4.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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