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…
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,…
Abstract Results of an intercomparison measurement of sensitivity standards are presented. The standards circulated were a flick and two multi-wave standards (MWS). The measurands were form deviation and, for the MWS only, the height of the dominant spectral components. For the flick, influences from mechanical filtering and calibration are discussed. For the MWS several influencing…
Abstract The calibration of form measurement instruments generally is performed by calibration standards. Current available standards are only restrictedly suited for this purpose. Therefore novel standards have been developed which embody several superimposed sinusoidal waves on a cylindrical surface. It is shown that by their application the calibration of form measurement instruments can be significantly…
Abstract The multistep error separation technique is a high precision measuring technique. It is widely used to measure the radial, axial and composite errors of rotating pick-up roundness measuring instruments, turntable roundness measuring instruments or precision axis systems. The author deals with the problems of measuring accuracy of the multistep method and the determination of…
Abstract This paper presents a new error separation method for accurate roundness measurement called the orthogonal mixed method. This method uses the information of one displacement probe and one angle probe to separate roundness error from spindle error. This method was developed from the mixed method, which uses the information of two displacement probes and…
Abstract. An international comparison of roundness measurements at the highest level of accuracy has beencarried out between eight European laboratories. Three roundness standards with different designs and roundnessdeviations were measured. One standard was a commercially available type, two standards were developed for thepurpose of this comparison. The agreement between the laboratories was within +/-20nm for…
Abstract This paper presents a new multiprobe method for roundness measurementscalled the mixed method. In this method, displacements at two points on acylindrical workpiece and an angle at one of the two points are simultaneouslymonitored by two probes. The differential output of the probes cancelsthe effect of the spindle error, and deconvolving the differential datayields…
AbstractRoundness measurement is critical in manufacturing, as it ensures that products conform to precise designspecifications. However, traditional multistep measurements for roundness error separation are time-consuming andlimited in their ability to separate specific Fourier components. In this study, we propose a novel combined multistepmeasurement method with prime numbers that overcomes these limitations. We demonstrate this method…
Abstract Measurement plays a key role in human’s life. Without measurement there will be no human life environment. Engineering science and technologies with their applications based on measurement, allow for decision of the development of our civilization. The role of metrology is constantly increasing, especially in such fields as industry, energy, transportation, education, health, agriculture…
Abstract Some of the finer points to be taken into consideration when accurately calibrating surface texture and roundness measuring instruments are discussed. Consideration is given to such things as stylus condition, linearity, range switching accuracy, frequency response, and overall sensitivity. The paper concludes with a brief account of an experiment to determine roundness errors to…
Abstract The application of error separation techniques to roundness measuring instruments is investigatedexperimentally, using digital computers. The accuracy of such techniques is substantiated by comparative measurements with two independent multi-orientation systems. Results obtained with these and other systems confirm that the errors of conventional roundness measuringinstruments can be reduced by a factor of ten or…
