大型数控回转工作台回转运动的结构设计是否合理，决定了数控回转工作台的分度精度高低以及承载能力大小，体现了其技术水平。重点介绍了大型数控回转工作台的回转运动设计方法及双蜗轮蜗杆消隙机构的结构和设计要点，按上述要点设计的工作台分度精度达到了±2″。%The structural design of rotary movement for large CNC rotary table is reasonable decision table inde-xing such as accuracy , load capacity and overall level of technology .Aiming at the architecture and design ele-ments, it shows detail about large CNC motion feature of the rotary table and two worm backlash institutions , de-signs the anti-backlash mechanism , the indexing accuracy of the table reaches ±2″.
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