Stay Parts manufacturer Of Precision parts processing In process ， The main error sources of ball screw drive are as follows ：

　　1、 Lead limit deviation of lead screw △Lo:2π Limit tolerance of lead in radian △L2m； Arbitrarily 300mm Internal lead limit tolerance △L300； Full thread Internal lead limit tolerance △L1 And lead error curve bandwidth tolerance △Lb。

　　2、 Parts processing Helix pair Of Axial clearance ： For double nut ball screw, preload can be applied Of Method to eliminate the gap 。

　　3、 Parts processing Ball screw Of Rigidity ： System stiffness 、 Ball contact stiffness 、 Nut stiffness 、 Screw Of Install Rigidity Etc. 。

　　 Roller Screw Of Accuracy class is shown in table 5-5 Shown ：