Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 04, 2019 - October 06, 2019
In the NC moving table, especially in the case of reversal motion such as the circular are interpolation motion, the thrust force due to table driving torque becomes smaller than the frictional force generated on the sliding surface, the NC moving table stops, and the motion accuracy deteriorates. In this research, we measure the rotational force, which is the torque component of the AC servomotor in the NC moving table, and the radial force calculated from the drive current value, which is the field component to clarify the motion characteristics. Furthermore, based on the clarified motion characteristics, we devise a compensation method using the motor drive current value of the torque component to improve the reversal motion. Also the position of the NC moving table is measured using a rotary encoder attached to an AC servomotor and a linear encoder attached on the linear guide. From these results, we propose a torque compensation method of the NC moving table.
