Form Metrology
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Malburg, Dr. Mark
Dr. Mark Malburg is the president of Digital Metrology Solutions…
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In situ measurement of cylindricity—Problems and solutions- K. Stepien∗
Abstract The paper is a critical review of existing methods that permit in situ measurement of large externalcylindrical surfaces. Large size cylindrical elements are used in many industries, e.g. papermaking, metallurgyor shipbuilding. Their diameter can sometimes reach even a few meters and they can be severalmeters long. Such elements should be characterized by high dimensional…
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Five-point cylindricity error separation technique – Wenwen Liu, JunSen Fu, Biao Wang, Shanlin Liu
Abstract This study focuses on developing a new error separation technique for the in situ measurement and reconstruction of cylindrical profile. Based on a five-point system proposed, the center vectors of the least squares circle in the cross-sectional profile of the cylinder can are accurately extracted by the error separation model. The vectors are based…
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Radial deviation gauge D. J. Whitehouse
Abstract Preferred commercial methods of measuring the out-of-roundness of aworkpiece are based upon radial methods. These incorporate a very accuratespindle either to carry the transducer or via a table to the workpiece.Consequently they are best operated in a controlled environment such as in aninspection room. However, there is a requirement for measuring the workpiecenear to…
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A new multiprobe method ofroundness measurements – Wei Gao, Satoshi Kiyono, and Tadatoshi Nomura
Abstract This paper presents a new multiprobe method for roundness measurements called the mixed method. In this method, displacements at two points on a cylindrical workpiece and an angle at one of the two points are simultaneously monitored by two probes. The differential output of the probes cancels the effect of the spindle error, and…
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A Multipoint Method for Spindle Error Motion Measurement – G. X. Zhang , Y.H. Zhang, S.M. Yang. Z. Li
Abstract A multi-point method for spindle error motion measurement is proposed in the paper. The radial error motion of the spindle is measured by 4 probes, where as the axial and tilt ones by 5 probes. Roundness error and flatness error of the specimens used for measuring the spindle error motions are separated and have…
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Development of a new measuring method for spindle rotation accuracy by three points method – K. Mitsui
Abstract A new apparatus for measurement of accuracy of spindle rotation based on three points method has been developed. Making use of the new method, it became possible to detect radial error motion of machine tool spindle even during cutting condition precisely.
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Four-Point Method of Roundness and Spindle Error Measurements – G.X. Zhang and R. K Wang
Abstract A new method of roundness and spindle error motion measurement is presented in thispaper. Roundness error of the workpiece and radial error motion of the spindle aremeasured simultaneously by using 4 probes mounted with certain angle arrangement. Thismethod gives high accuracy for all harmonics which is difficult for three point method. Basedon error analysis…
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Uncertainty analysis for roundness measurements by the example of measurements on a glass hemisphere- M. Nuegebauer
Abstract This paper presents an uncertainty analysis for roundness measurements on a glass hemisphere. The measurements were carried out with the spindle measuring instrument Talyrond 73. For the correction of spindle errors, a multi-step error separation technique with ten steps was used. Various input quantities were investigated such as the form deviations of the hemisphere,…
