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JRM Vol.6 No.6 pp. 485-490
doi: 10.20965/jrm.1994.p0485
(1994)

Paper:

A Study of On-Machine Measurement with the Compensation of Probe Sensitivity in a Machine Tool

Yoshio Mizugaki, Teruyuki Asao, Masafumi Sakamoto,
Sadao Arai

Production Engineering Lab., Department of Mechanical Engineering, Kyushu Institute of Technology, Japan, 1-1, Sensui-cho, Tobata-ku, Kita Kyushu, Fukuoka, 804 Japan

Received:
September 29, 1994
Accepted:
October 10, 1994
Published:
December 20, 1994
Keywords:
Measurement, On-machine, Machine tool, Touch probe, Sensitivity, Coons patch
Abstract

This paper presents a new method of the compensation of sensitivity of a touch probe in a machine tool. In this study the sensitivity is defined as measurement error in each probing direction. In the detection of measurement errors, a reference ball used in Coordinate Measuring Machines is adopted as the pseudo-datum. After measuring it in various probing directions, each measurement error of lobbing is modelled by means of a spline interpolation. Thus, the sensitivity model is represented in form of Coons patch whose parameters at the angles of probing direction. The effect of probing approach speed on measurement error has also been examined. The finishing process after the on-machine in-process measurement is conducted in order to evaluate the utility of the sensitivity model. Through the measurement of finished surfaces, the utility of finishing process and the validity of the sensitivity model are confirmed.

Cite this article as:
Y. Mizugaki, T. Asao, M. Sakamoto, and <. Arai, “A Study of On-Machine Measurement with the Compensation of Probe Sensitivity in a Machine Tool,” J. Robot. Mechatron., Vol.6, No.6, pp. 485-490, 1994.
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