Development of Two-axis Linkage PLC Control System for Electrochemical Machining Helical Gear

Without the effect of cutting force and cutting heat, electrochemical machining helical gear has the advantage of high production efficiency, good processing quality and tool cathode lossless. But the machine that based on small PLC control system does not have the function of helix interpolation, limiting the research and application of electrochemical machining helical gear. According to the principle of electrochemical machining of cylindrical helical gear, using pulse output instruction and powerful ability of floating point arithmetic of PLC, a helical gear two-axis linkage control algorithm is developed. This paper introduces the basic principle and presents a detailed derivation of algorithm formula. According to the principle and the algorithm formula, the control program is developed and the electrochemical machining of internal helical cylindrical gear is realized. Experiments show that the two-axis linkage control algorithm is stable, reliable and meet the needs of the helical gear electrochemical machining.