The improvement of electrophysical and electrochemical processing technologies is a key task for modern mechanical engineering, especially in the production of high-precision parts of complex shapes, such as turbine blades and molds. One of the promising directions is the use of processing methods with profile electrodes with vertical feed, which provides increased accuracy, process stability and reduced tool wear. However, the issues of dynamic modeling of such a drive, which are critically important for predicting the behavior of the system and optimizing its operation, have not been sufficiently studied. The purpose of this work is to develop a dynamic model of the vertical feed drive of the profiling electrode and analyze its transients to optimize technological parameters. The study presents a detailed kinematic drive scheme. The methodology is based on a strict energy approach to reducing the parameters of the kinematic target to the motor shaft. Based on the obtained equations of motion, a computer model has been developed in the Simulink environment. The results of modeling transients during direct start-up confirmed the stability of the system and the correctness of the selected parameters. The analysis revealed the oscillatory nature of the transient process caused by elastic bonds, and showed a smooth transition to a steady state with a slight overshoot, which is acceptable for high-precision positioning tasks. An effective linear model of an electromechanical actuator is presented, which has proven its adequacy as a basic tool. The analysis showed that in order to further improve the accuracy of the predictive ability of the model, it is necessary to take into account significant nonlinear factors: variable stiffness, kinematic gaps, temperature deformations and gradual wear of nodes.
Pashaev et al. (Tue,) studied this question.