Study On The Technology Of Fast Cutting Processing In Electrochemical Machining

With the rapid development of the aerospace industry,there forms a growing requirement for the performance of the material in aerospace.Titanium alloy,high temperature alloy and other materials are increasingly applied in aerospace field.In general,the volume of the forging blank is much larger than the volume of the part whose volume only accounts for10%-20% of that of the blank,and some is even below 5%.In the process of rough machining,the amount of material removal is very large.And these materials are usually difficult to machine.The whole machining cost maintains high as a result of hard machining which has a long cycle,a high cost of the cutting tools,as well as a serious waste of expensive materials.This paper presents a method that carries on direct segmentation processing for materials by means of electrochemical cutting machine,which is a new processing technique that the parts with complex shape are directly frame processed from the profile or the simple blank.Designing and manufacturing the cathode of the electrolytic cutting tool,gradually optimizing the reasonable cathode material,as well as simulating and optimizing the cathode structure,all these are supposed to ensure the high cutting efficiency and low material loss.The width and shape of the cathode can be changed according to the processed object.For example,when the blind hole is being cutting,the circular surface can be processed by a cylindrical cathode or a part of a tubular cathode,and the structure of the cavity is processed by plate cathode or other composite cathode,which can ensure that these cathodes work stably during the machining process.Through these experiments by using titanium alloy TC4,high temperature alloy and high temperature stainless steel,the electrolytic direct cutting technology in rough machining of the parts is proved to be feasible and efficient.Meanwhile,a series of technical parameters of electrochemical cutting process are obtained.This provides a theoretical basis and technical support for the rapid cutting of typical complex structures of aerospace materials.