Fixture for positioning and machining special-shaped aero-engine nozzle part

The utility model belongs to the technical field of work fixtures, and particularly relates to a fixture for positioning and processing a special-shaped aero-engine nozzle part, which comprises a positioning seat (1), a positioning pin (2) and a screw (3), the outer wall of the positioning seat (1) is in a smooth cylindrical shape, the positioning pin (2) is matched with the positioning seat, the screw (3) is matched with the positioning seat (1) to fix a machined part, and the positioning pin (2) fixes the part on a clamp to prevent the part from rotating in the circumferential direction. The fixture solves the problem of deformation of a special-shaped aero-engine nozzle part during machining, the positioning mode is more stable, and the contact surface of the part and the fixture is stressed uniformly. In addition, the clamp is small in size, and uneven gravity distribution is avoided as much as possible when the clamp rotates around a shaft. 本实用新型属于工装夹具技术领域，具体涉及一种异型航空发动机喷嘴零件定位加工的夹具，包括：定位座(1)、定位销(2)、螺钉(3)；