目前,氧乙炔及空气等离子切割机绝大部分是二自由度的平面切割机,其割炬的运动轨迹限制在 x、y 平面内,因而只能对原板材进行备料切割,其工作方式有机械控制的,也有数控的。但很多筒形、球形等壳体的制造中,其工艺常要求在预制的筒形、球形等壳体上割特定形状的孔。如数十万伏高压封闭电器的壳体上出线孔的加工,目前国内外均采用“割孔翻 At present, oxyacetylene and air plasma cutting machine is mostly two-degree-of-freedom plane cutting machine, the cutting torch motion trajectory is limited to the x, y plane, which can only cut the original plate material preparation, and its working methods are mechanical Control, but also CNC. However, in the manufacture of many cylindrical, spherical and other housings, the process often requires the cutting of specially shaped holes in prefabricated cylindrical, spherical, etc. housings. If hundreds of thousands of volts high voltage electrical enclosure shell outlet processing, at home and abroad are used "cut hole turn