它的精度和各项性能直接影响数控机床的定位精度和重复定位精度，特别是滚珠丝杠的导程误差对机床定位精度的影响最为明显。
The precision and performance index of ball screw unit determine the positioning accuracy and the resetting accuracy of nc machines, especially its lead error.
介绍了一种大导程波形联结螺纹的高效加工方法，借助计算机进行了螺纹牙形的精度分析，得出了齿形误差曲线。
This paper presents a high efficient process method of a steep lead tread of coupling screw and studies the profile accuracy by using electronic computer and arrives at the profile error curve.
介绍了一种大导程波形联结螺纹的高效加工方法，借助计算机进行了螺纹牙形的精度分析，得出了齿形误差曲线。
This paper presents a high efficient process method of a steep lead tread of coupling screw and studies the profile accuracy by using electronic computer and arrives at the profile error curve.
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