An adaptive speed control method for the spindle of an intelligent round shaft straightening machine

Abstract

An adaptive speed control method for the spindle of an intelligent round shaft straightening machine, which uses an adaptive deceleration phase acceleration control algorithm to adjust the acceleration in the deceleration phase, that is, in the speed planning of the same distance, compared with the time in the acceleration phase, The time of the deceleration phase is increased, thereby reducing the impact force generated when the spindle stops moving; the target distance L of the spindle movement, the set target speed V m , compare the speed of each stage with the corresponding number of pulse steps, use the method of forward push in the acceleration stage and reverse push in the deceleration stage to adjust the actual maximum speed that the motor can achieve, and plan the acceleration and deceleration curve of the motor in real time. The invention can effectively solve the problems of the impact force generated when the main shaft of the round-shaft straightening machine stops moving, and the resulting vibration and collision, accurate measurement of the bending degree, and damage of the machine and the motor.

Description

technical field [0001] The invention relates to a speed control method, in particular to an adaptive speed control method for the main shaft of an intelligent circular shaft straightening machine, belonging to the field of motion control. Background technique [0002] In recent years, with the rapid development of the domestic economy, the use of round shaft straightening machines has become more and more widespread. Intelligent straightening machines can straighten round shaft steels with different degrees of hardness and quenching. The intelligent round shaft straightening machine adopts the main shaft (straightening head) driven by the motor to drive the load to press down and straighten the bending position of the round shaft material, and has received widespread attention. [0003] The main shaft correction system of the intelligent round shaft straightening machine is mainly at the bending position of the round shaft. The supporting points at both ends of the bending p...

AI Technical Summary

Problems solved by technology

However, if you want to correct the round shafts of different materials well, then the main shaft (alignment head) must have a lot of force to correct the round shafts, so the main shaft must carry a large load

When the main shaft (straightening head) decelerates and stops with the moving straightening function, it can be seen from the formula Ft=mv that when the speed and load are large, a large impact force will be generated, and the equipment will easily vibrate and collide. Shaking will cause inaccurate measurement of curvature, and even cause mechanical collision of the straightening machine to damage the machine and motor, especially in high-speed motion

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