Numerical control electric spark shapes the make choice of of parameter of electric treatment craft

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  • source:CLAREY CNC Machining
(1) the polarity of choice tool electrode of electrode polarity chooses a principle commonly is: Cupreous electrode is right steel: Choose " + " polarity; Cupreous electrode is right copper: Choose " - " polarity; Cupreous electrode is right hard alloy: "+ " " - " polarity is OK; Black lead electrode is right copper: Choose " - " polarity; Black lead electrode is right hard alloy: Choose " - " polarity; Black lead electrode is right steel: Treatment R Max is the following aperture of 15 μ M, for " - " extremely, treatment R Max is aperture of above of 15 μ M, for " + " polarity; Steel electrode is right steel: Choose " + " polarity. (2) the electric current of choice treatment peak value that machines peak value electric current and pulse width and pulse width basically affect width of treatment surface surface roughness, treatment. It is very important to had chosen this pair of parameters, this basically relies on oneself to machine the power source character of experience and machine tool. Generally speaking machine tool production manufacturer can offer a coarser power source target, be like electric current of peak value of the biggest treatment, electric current of peak value of the smallest treatment, width of pulse of the biggest treatment, width of the smallest pulse, such we can machine these peak value electric current and pulse width cent are 3 area, namely rough machining area, semifinishing machining area, finish machining area, the peak value electric current of finish machining area and treatment pulse width are the smallest, the electric current of peak value of the biggest treatment that electric current of peak value of the smallest treatment can amount to 1/6 and 1/30 are the biggest pulse width, the electric current of peak value of the biggest treatment that semifinishing machining area is 1/6 and 1/30 are the biggest pulse width, the electric current of peak value of the biggest treatment to 1/2 and 1/12 are the biggest pulse width; Remain finally it is rough machining area namely. When treatment, handlers can try to amend according to machining a circumstance actually. To achieve final treatment claimed accuracy, surface roughness value is inferior, floor level should slant when machining peak value electric current and pulse width choice finally a few. To rough machining, because from the back still have semifinishing machining, precision work, so electric current of its treatment peak value and pulse width can slant a few bigger, in order to achieve old treatment rate. To semifinishing machining, basically be for the treatment mark that purify rough machining leaves and purify a few surplus, so peak value electric current and pulse width take intermediate cost commonly. (3) influence of time of space of pulse of choice of pulse space time machines efficiency, but too short space time can cause discharge unusual, the key when choosing so considers to discharge bits circumstance, in order to assure normal treatment. CNC Milling