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28 May 1993 Design of an on-machine gauge for diameter measurements
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Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145560
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States
Abstract
The measurement of part diameters is an important factor in metal turning operations, increased production demands have suggested the use of methods that adjust subsequent cuts depending on the previous operations. This paper describes the design of a laser based gage made specifically for measuring parts on the machine tool to a high accuracy. The tri-beam gage uses three beams of light to measure the local curvature of the part in a manner similar to a V-block gage. The diffraction of the light beams that touch the sides of the part are sensed by a detector array. The distinctive diffraction pattern is correlated to locate the edge of the shadow to a very high precision. The properties of this design include: calibration that is independent of the machine tool scales, non-contact damage free operation, high speed of measurement, low cost of the gage, and the ability to measure parts in motion. This paper will describe the design considerations of this gage including issues of design angle of the V, light source coherence, thermal drift, noise effects, stability, and accuracy.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kevin G. Harding, Eric J. Sieczka, Eric Anthony Kaltenbacher, and Albert J. Boehnlein "Design of an on-machine gauge for diameter measurements", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145560
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