Evaluation of form errors in cylindrical features using coordinate measurement data

K. Ravindra, V. Chittaranjan Das, P. Madar Valli, D. Nageswara Rao

Abstract

The geometric features of the manufactured components are inspected for their acceptability. Most of the machine parts consist of cylindrical form, which should possess the required geometrical tolerance and should be checked for their acceptance. At the present scenario, the Coordinate Measuring Machines (CMMs) are considered to be reliable and capable to perform automated inspection on the manufactured parts. In CMMs, the measured data is being processed using Least Squares Method to assess the geometric features of the part. The error values assessed by CMM are not the minimum, there by resulting in the rejection of good parts. In this paper a technique is presented to assess the cylindricity, which gives the minimum form error using the CMM data. The proposed method is simple and the results depict the validity of the assessed cylindricity at par with that of the other techniques.

Keywords

Form errors; Circularity; Cylindricity; Coordinate Measuring Machine

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IMEKO-TC14-2007-29.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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