适应数控加工的空间曲面的建立

Establishment of spatial curved surface for CNC machining

论述了适应数控加工B样条曲面建立的方法,指出了B样条曲面具有一、二阶连续的特性,可以用多个曲面片的拼接而组成任意形状的自由曲面,从而解决了数控加工中空间曲面建模的难题,为建立空间自由曲面提供了理论依据.

A method of setting up curved surfaced for NC machining is discussed,where the B-spline is employed.It is pointed out that the curved surface with B-spline has first-order as well as second order continuity,so that several segments of curved surfaces can be pieced together to make up a free curved surface with arbitrary shape.Thus,the modeling difficulty of spatial curved surface during the NC machining is (overcome,)providing an authentic theoretical basis for establishment of spatial free curved surface.