Precision ball screwunit is the key part of NC machine, and its manufacturing level determines the precision level of NC machine to great extent.
精密滚珠丝杠副是数控机床的关键功能部件，其制造水平的高低在很大程度上决定了数控机床的精度高低。
2
Ball screwunit is the key part of NC machines, and its adoption is an effective measure of improving sensitivity, positioning accuracy and prevention crawl.
滚珠丝杠副是数控机床进给系统的核心部件，采用它是提高进给系统灵敏度、定位精度和防止爬行的有效措施。
3
The precision and performance index of ball screwunit determine the positioning accuracy and the resetting accuracy of nc machines, especially its lead error.