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目前,机械抛光虽有所发展,但一般只限于二维轮廓的零件。三维的除特殊情况外,几乎找不到令人满意的机械抛光方法。而电火花抛光却能获得光亮的表面,其粗糙度可达R_0=0.2μm。电火花抛光的优点是工件只需一次装夹,经电火花的粗、精加工后,只需改变工艺参数,紧接着就可进行抛光. 文中同时指出,要达到高的电抛光表面质量,还需注意机床电源输出导线的电容,特别是加工电极与工件形成的电容,都会影响微弱输出脉冲的波形,因此必须采取有效措施,才能保证电容放电时,不会在工件上形成磨砂表面。到目前为止,能电抛光的表面
At present, although the development of mechanical polishing, but generally limited to two-dimensional contour parts. Three-dimensional except for special circumstances, almost can not find satisfactory mechanical polishing method. The spark polishing can get a shiny surface, the roughness of up to R_0 = 0.2μm. The advantage of electric spark polishing is that the workpiece need only be clamped once, and after roughing and finishing by electric sparking, only the process parameters can be changed and then the polishing can be carried out.At the same time, it is pointed out that in order to achieve high electropolishing surface quality, It should be noted that the capacitance of the output wire of the machine tool power supply, especially the capacitance formed by the processing electrode and the workpiece, will affect the waveform of the weak output pulse. Therefore, effective measures must be taken to ensure that the capacitor does not form a matte surface when discharged. So far, the surface can be electropolished