Seamless locking device of C spindle of lathe

The invention discloses a seamless locking device of a C spindle of a lathe. The seamless locking device of the C spindle of the lathe comprises a brake disc, wherein the brake disc is arranged outside a spindle in a sleeving mode, brake pads are arranged on the left end face and the right end face of the brake disc correspondingly, the end, away from the brake disc, of each brake pad is connected with a connecting plate, each connecting plate is connected with an elastic plate, and the elastic plates are fixedly connected with the lathe. An oil cylinder piston mechanism used for driving the brake pads to lock the brake disc is arranged between the two connecting plates. The seamless locking device not only can eliminate forward and reverse gaps of the C spindle and improve the machining precision of the lathe, but also can ensure the locking rigidity; and the seamless locking device is safe and reliable. 本发明公开一种车床C轴无间隙锁紧装置，包括刹车盘，所述刹车盘套装于主轴外部，所述刹车盘的左右两端面均设置有刹车片，每个刹车片远离刹车盘的一端均连接有连接板，每个连接板均连接有弹性板，所述弹性板与机床固定连接，两