Noncontact automatic measurement of free-form surface profiles on CNC machines

Kuang-Chao Fan; Kuang-Pu Wen

doi:10.1117/12.156331

22 September 1993 Non-contact automatic measurement of free-form surface profiles on CNC machines

Kuang-Chao Fan, Kuang-Pu Wen

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156331
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

Abstract

This paper describes the work to develop a non-contact type automatic measurement system for any free-form surfaces on a CNC machine tool or a coordinate measuring machine (CMM) and its CAD/CAM integration. A laser probe made by Keyence Co. model LC-2220 was integrated into the CNC machine as the non-contact sensor. A measurement software has been developed for automatic surface tracing of any free-form profile. Data transfer to any commercially available CAD/CAM system for reverse engineering is also available via proper DXF file. Extensive calibration work has been carried out on the systematic accuracy of the laser probe with respect to the color material surface slope and edge detection of the workpiece by the use of a HP5528 laser interferometer system. Having employed the surface painting technique the shape error of the copied object relative to its master piece was found within 30 micrometers which is deemed adequate enough to the mold industry.

Citation Download Citation

Kuang-Chao Fan and Kuang-Pu Wen "Non-contact automatic measurement of free-form surface profiles on CNC machines", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156331

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