After plain lathe completes its work holder, if the chuckwrench isn't drawn out because of various reasons, personal or equipment accidents will happen.
普通车床卡盘扳手完成工件装夹后，有可能未取出扳手就启动电源，容易造成生产安全事故。
2
The utility model skillfully performs improvement to the traditional chuckwrench and further has the advantages of simple structure, easy manufacture and convenient operation.
该工具 巧妙地将传统的卡盘扳手进行改进，结构简单，制造容易，操作方便。
3
Interlocked safety device of chuckwrench in plain lathe is designed to this situation.