A quick conversion structure of a lathe drill bit

Abstract

The utility model discloses a quick conversion structure of lathe drill bit relates to lathe technical field, it includes the connecting rod who is connected with lathe tailstock, the connecting rod is installed with connecting rod base through locking bolt, and the butt joint has drill chuck base on connecting rod base, and the drill chuck base is connected locking through fixed screw between connecting rod base. This kind of quick conversion structure of lathe drill bit, rotation switching mechanism has realized the quick replacement of three kinds of specifications drill bit, has promoted the drilling operation efficiency of large size greatly when replacing different size's drill bit, only needs to rotate drill chuck base can be realized, need not to dismount the tool to complete drill bit switching, and three independent drill chuck can install different diameter drill bit simultaneously, satisfy the step-by-step drilling process requirement of " first small later big", and through the accurate cooperation of positioning pin and fixed hole ensures the coaxiality after each switching, and the machining accuracy is guaranteed, and simple and convenient installation, both reduce the labor intensity of operator, and reduce the dependence on professional skill.

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