Curve self-locking type machining tool

The utility model discloses a curve self-locking type machining tool which comprises a hollow locking and positioning mechanism, a self-locking curve is formed in the inner wall of a cavity of the locking and positioning mechanism, and a part to be locked and the self-locking curve are arranged in the cavity of the locking and positioning mechanism in a matched mode. The locking and positioning mechanism comprises a locking plate and a positioning ring, a self-locking curve is formed in the inner wall of a cavity of the locking plate, the periphery of the positioning ring is fixed to the locking plate through the self-locking curve, and a to-be-locked part is arranged in a hollow cavity of the positioning ring; due to the arrangement of the locking positioning mechanism, the clamping forceof the to-be-locked part can be adjusted, and the machining quality and efficiency of the to-be-locked part are improved. 实用新型公开了一种曲线自锁型加工工装，包括中空的锁紧定位机构，锁紧定位机构的腔体内壁中开设有自锁曲线，待锁紧零件与所述自锁曲线配合设置于锁紧定位机构的腔体中；所述锁紧定位机构包括锁定板和定位环，锁定板的腔