Electric spark machines technological process - method of electric spark form cutting and process

  • Time:
  • Click:136
  • source:MARSTEN CNC Machining
Electric spark machines technological process - method of electric spark form cutting and process 1. Method of electric spark form cutting (the representative application that the treatment of die of electric spark treatment of 1) die is treatment of electric spark perforation. Die treatment basically is drift and sunken model treatment, drift can use machining, and sunken model often can be machined with electric spark only, otherwise, not only treatment is very difficult, quality assures not easily also. The dimension precision of sunken model basically relies on tool electrode to assure, the precision of electrode and exterior surface roughness should accord with a requirement. Because be put in discharge clearance, tool electrode dimension must be less than the dimension of sunken model. To assure to win drift and sunken standard between cooperate clearance, what electric spark perforation machines steel of commonly used “ to hit steel ” is direct coordinate a standard. Machine sunken model directly as electrode with steel punch namely, end of point of will sunken model is gadarene when treatment, form up ” of “ horn mouth, horn mouth is helpful for die falling turn over workpiece to make ” of “ horn mouth serves as sunken model downward after makings treatment. Because in machining a process handling time of tool electrode lower end grows,the generation of ” of “ horn mouth is, absolutely loss is big, and the discharge that electrode entrance is in clearance criterion because the existence of electric corrode child and intervening blame is normal discharge again process, namely “ discharges 2 times ” , arose to machine rake consequently. (The law of translation of odd electrode of electric spark treatment of 2) antrum model is in model apply the most extensively in the treatment of antrum model. It is to use an electrode to chase class to change craft parameter according to the order of thick, medium, essence. Meanwhile, ordinal the smooth momentum that increases electrode, in order to rise model the clearance difference that antrum flank discharges and surface are microcosmic rough spend difference, profile modeling of implementation antrum flank repairs light. Alleged translation is to show tool electrode is in perpendicular at model tiny translation is made move at workpiece relatively inside the plane of antrum deepness direction, come true by ” of head of translation of “ of machine tool accessory. The advantage of this kind of method is to need an electrode only, outfit places fixed position, can achieve better treatment precision. Additional, translation motion can make electrode loss even, improvement discharges bits condition, treatment is stabler. Direct figuration law basically uses only tool electrode at machining the antrum standard with very low deepness, if machine the decorative pattern model of all sorts of souvenir badge, badge, letter of foreign language of brand, emblem mark, Chinese and design of arts and crafts, anaglyph is machined to wait in mould surface. Divide this beyond, also can be used at treatment not to have straight wall model antrum mould or figuration surface. 2. Process of electric spark form cutting (the choice of 1) electrode material and treatment. Commonly used electrode material is red copper and black lead. Red copper makes the electrode of good into dimension precision, complex form or chip electrode easily. Figuration of machining of black lead electrode is easy, qualitative the lightest. Red copper electrode and photograph of black lead electrode are compared, loss of the electrode when finish machining is lesser, exterior surface roughness is taller also. Red copper electrode can adopt cut of electric spark line, electric spark grinding, general machining, the means such as numerical control milling and electroform will make. Black lead electrode makes a method have machining, pressurization vibration figuration, figuration agglomeration, set spell combination, supersonic treatment and arenaceous line cut. (The preparation of 2) workpiece. Before electric spark is machined, workpiece antrum part should have prior operation, leave appropriate electric spark mental allowance. The size of surplus should compensate the fixed position that electric spark machines, set right error reachs machining error. More complex to appearance model antrum, surplus wants to be increased appropriately. (The choice with 3) phone standard rule, changeover and smooth momentum allocate. Electric spark of electric rule accurate toe machines the parameter of a group of report in the process, if width of voltage, electric current, pulse, pulse is removed,wait. Electric rule accurate choice is right, immediate impact move antrum machines technology index. Should mix according to the requirement of workpiece, electrode index of technology of the material of workpiece, treatment and demand of economic effect aimlessly will decide electric rule is standard, change in time in machining a process. CNC Milling