The Testing Stand of the Direct Linear and the Torque Servo Drives Siemens Controlled by the Simotion C

摘要

Conception of ball screw, gearbox, pinion and rack are commonly used for linear and rotary axes of machine tools. Issues of these applications are back-lash, increased moments of inertia and friction. These disadvantages can be eliminated by using of direct drive motors. In this case, it has to be taken into account that the entire mechanical stiffness of the axis is formed only by closed loop control. Before using of this technology, required properties and behavior of motors has to be practically tested in specific situations on real device. The first goal of this project was design and implementation of unique stand for testing of direct linear and direct torque drive motors in order to use in special-purpose machine tools. The second goal was design and implementation of complete control system for testing of dynamics and position accuracy. Both of the test stand and the control system based on Siemens Simotion C controller were successfully constructed and implemented in accordance with the design. Created solution allows measuring of position accuracy, speed and torque for standardized displacements law and it can be done in manual or automatic mode. It also allows developing and evaluating the quality of the control system. Attention was paid to the new method of transmission data of displacement law from the USB flash memory to the controller based on the Client-Server communication. Result of this project is decision about recommendation of this concept for practical application for special-purpose machine tools.