Research and Implementation of Control Method for Time Grating Rotary Table with High Precision

Abstract:

A new numerical control (NC) rotary table with high accuracy is presented. Time grating, which was taken as the angle measuring unit, was installed inside the rotary table to measure the angular displacement in real time. Moreover, the signal of time grating was used as the feedback to realize full-closed loop control for improving the control accuracy of the NC table. Furthermore, the problem of insufficient subdivision of the step angle of the stepping motor could be solved by increasing the transmission ratio of motor shaft and rotary table. Experiments prove that the NC rotary table has the advantages of high control accuracy and running steadily, and the NC system shows a good application prospect in the field of machining.

• Periodical: Advanced Materials Research (Volume 660)
• Pages: 135-138
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.660.135
• Online since: February 2013
• Authors: Zhong Hua Gao
• Keywords: Closed Loop Control, Mechanical Subdivision, NC Rotary Table, Time Grating

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