Lead error would be occurred during process thread by nc lathe . aiming at this issue , accurate thread excess was calculated . this way is simple and effectiveness in practice 摘要用数控车床加工精密螺纹时，在开始段和结束段会出现导程误差。针对这个问题，进行了准确的螺纹裕量计算。在实际加工中，简单易行，效果良好。
To the problem that the lead of the twist - roller frictional drive is influenced by the load fluctuation , the relationship formula between the load and the lead is presented at the basis of force analysis 摘要针对扭轮摩擦传动机结构导程易受载荷波动影响的问题，通过对扭轮摩擦传动机构进行力学分析，给出了工作载荷和扭轮摩擦传动机构导程的关系式。
The measuring principle of the comprehensive error detection of the ball screw ' s pitch is expounded in this paper . basing on the above principle , we develops a system design of the controlling and measuring part of 3 meter dynamic measuring instrument 本文就滚珠丝杠综合导程误差检测进行了测量原理的分析研究，并对3米滚珠丝杠综合导程动态测量仪的控制及检验部分进行了系统设计。
Abstract : the paper suggests two methods for adjusting the mesh clearance in cylindrical worm drive : one is to adjust the meshing center distance of worm gears , the other is to use dual lead cylindrical worm , introducing briefly the principle of adjustment and making a comparison between the characteristics of the two methods 文摘:提出了两种调整圆柱蜗杆传动啮合侧隙的方法:通过改变蜗轮蜗杆的啮合中心距来改变其啮合侧隙;采用双导程蜗杆传动以调整蜗轮蜗杆的啮合侧隙,简述了调整原理,并比较了两种调整方法各自的特点。
