在金切机床上机械加工零件时其加工周期误差是在必须保证所需几何精度和表面层质量时揭示的。周期误差包含有被加工表面的尺寸误差(如旋转表面的半径)、形状误差(椭圆度、棱圆度、波纹度)及表面相互位置误 The machining cycle error when machining parts on a metal cutting machine is revealed when the required geometric accuracy and surface quality have to be guaranteed. The cycle error includes the dimensional error of the surface to be machined (such as the radius of the rotating surface), the shape error (ovality, degree of roundness, waviness) and the mutual misalignment of the surface