Abstract
Abstract
Measurement and compensation of these errors can improve the machining accuracy of a machine tool. Double ball bar is one of the traditional instruments for measuring machine tool errors, whose measurement range depends on the length of the bar since the sensor has a stretching range of only 2 mm. Some extension bars are usually used to extend the measuring range, but each replacement of an extension bar requires recalibration and installation. In this paper, a novel measuring equipment based on telescopic ball bar with an indexing joint (IJ-TBB) is proposed, which has six measuring ranges after a single installation. First, the basic structure and measuring principle of the IJ-TBB are introduced. Then, the effect of structural errors of IJ-TBB on the measurement accuracy is studied. Next, the error amplification characteristic and measurement resolution of the IJ-TBB are analyzed. Finally, an experiment was carried out to validate the accuracy of the IJ-TBB. The results reveal that the IJ-TBB has high precision and high efficiency. It is valuable to extend the measurement range and improve the measurement efficiency of machine tools.
Funder
Zhejiang Provincial Natural Science Foundation of China
National Natural Science Foundation of China
Subject
Applied Mathematics,Instrumentation,Engineering (miscellaneous)
Cited by
4 articles.
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