Design Of ECM System For Processing Deep Helix And Investigation On The Key Technique

The technological equipment of electrochemical machining (ECM) for processing deep helix is a system in which the match and coordination between equipments are very important. The deep helix is so long, with the big caliber and deep groove, that the process duration is long, electrical current is very large. Therefore the stability of these equipments and reliability of system must be maintained well.The scheme of ECM system for deep helix of Shanxi Province non-traditional machining key laboratory in our university was designed, and the key technique of equipments were discussed in this thesis.1) The layout scheme of ECM system:Having analyzed the operating condition of the ECM system for deep helix and the performance parameters of equipments, based on the distribution of Shanxi Province non-traditional machining key laboratory in our university, I designed the layout of ECM system with the machine tool system, power, control and electrolyte system for processing deep helix. The layout plan was expressed by the 3d effect picture as well.2) The design of with dynamic seal structure in machine tool:Since the machining gap should be fed electrolyte from pipe and the rotary cathode got in touch with power in ECM machining tool, it is necessary to design rotary conductive device with dynamic seal structure. The two combined seal construction were designed to solve the leakiness problem between the rotary-shaft of spindle box and inlet of electrolyte tube.3) Machine tool accessories:The reason of selecting steel drag chains for electrolyte rubber pipe and the cables cooled by water, and the engineering plastic drag chain for the control wire were analyzed. The TL125 of steel drag chain was determined in light of parameters of the machine tool. The parameters for the steel drag chain were calculated and its motion was simulated. For accomplished clamping and conductivity simultaneously, an integrate electric conduction clamp was designed.4) Design of electrolyte flow system:Considering the material property of the metal stator of spiral drill, we selected the adaptive electrolyte, designed the electrolyte tank, and selected five type pumps, each of which is of different use, as well as the purification filter and heat-exchanger. Finally, its installation principle and method were analyzed.The motion simulation of the drag chains show that length of drag chains are satisfied with the route of the shaft of machine tool. The ECM technological experiments show that the leakiness problem was solved.