Lathe tool fixing device

The utility model discloses a lathe tool fixing device, including the fixed mounting motor on the planker and bearing frame and wear to establish the main shaft in the bearing frame with the aid of the bearing in the lathe, still including the belt transmission mechanism that is used for coupleing motor and main shaft, the terminal setting of main shaft is used for installing the multi -purpose unsteady joint of cutter, the main shaft with lathe spindle parallel mount, through install motor and bearing frame on the planker in the lathe, it is rotatory that the motor passes through the driving spindle of belt transmission mechanism, and the main shaft passes through the bearing to be installed in the bearing frame, and the main shaft is parallel with the lathe spindle, installs the joint that floats at the main shaft end, forms a complete set with the joint that floats and install different kinds of cutters for process not the work piece of isostructure and different machining precision requirements, effectively expand the function of lathe, enlarge application range, reduce equipment cost.