Mechanism Research And Experimental Analysis Of Magnetic Field And EDM Compound Machining

With the development of science and technology, the requirements of many industries and departments, such as aviation,spaceflight,mechanism,electron,automobile,medical treatment,optics,mould,chemical-fibre,materials,light-industry etc, which request to process various complex superficial workpieces,various super exact,finishing and especial workpeces, becomes more and more. Aiming at the reqirements, it is difficult for traditional EDM to reach. Although, the traditional EDM can machine various hard cutting and complex superficial workpieces, the practical application is affected by the disadvantages, slow speed of machining, inconvenience of discharging chipping, instability of processing, electrode easy to waste. At present, the scholars and technicians of home and oversea have had some researches about finishing works molding, finishing mechanism and technics rules, which is affected by various energy effects by oneself form single magnetic force and EDM and ultrasonic energy. The moulding machine-tools have been applied. The mechanics and EDM,EDM and ultrasonic,magnetic and electric chemistry compound machining etc, two energy compound machining, have respective characteristics and advantages, in the mean time have also respective shortages. But, magnetic and EDM compound machining isn't still covered. However, magnetic, and EDM compound machining can achieve predominancecomplement, remarkably boost the processing efficiency, improve superficial quality and markedly amend the defects of EDM by oneself.This paper presented the research and exploration of mechanism and technics as well as the design of the magnetic circuit of this new compound machining, based on above, establishing the parameter model, meantime, analyzing influential effects on productivity of magnetic and EDM compound machining the holes through large numbers of experiments, including velcoity contrast experiments of pre-compound and after-compound machining with the change of current, velcoity contrast experiments of pre-compound and after-compound machining with the change of magnetic induction, velcoity contrast experiments of pre-compound and after-compound machining with the change of impulse width, experiments of the superficial roughness, experiments of the Electrode wastage, and intersectant experiments analysis as well as the change experiments of current waveforms. Through a number of experiments we analysed the influential effects of magnetic and EDM compound machining, compared the factors with EDM by oneself. A large of experiment records and deducibility have demonstrated that the productivity of magnetic and EDM compound machining is developed by 20%～400% than traditional EDM. By doing so, we can includede that the magnetic and EDM compound machining can effectively meliorate the shortcomings of single EDM, such as the slow speed of machining, inconvenience of discharging chipping,instability of processing, electrode easy to waste. It put forward the assumption for the next research, and pave a well way for the hole equipment of magnetic and EDM compound machining which will be developed。...