A fixture with a built-in compression linkage mechanism

Abstract

The invention provides a fixture with a built-in compaction linkage mechanism and belongs to the technical field of aircraft engines. The fixture comprises a base; a positioning plate is arranged above the base; the base is fixedly connected with the positioning plate through a ring seat; the center of the positioning plate is provided with a first through hole; a rotating plate is arranged above the positioning plate; a plate shaft of the rotating plate is arranged on the upper portion of the first through hole of the positioning plate; a supporting ring comprising a projection is arranged under the rotating plate; the projection of the supporting ring is formed on the lower portion of the first through hole of the positioning plate; the rotating plate is fixed connected with the supporting ring; the rotating plate and the supporting ring are matched with the positioning plate in a gap mode; a plurality of pull rods are arranged above the positioning plate along the circumference; one ends of the pull rods are hinged to the rotating plate; the other ends of the pull rods are provided with second through holes; the portions of the positioning plate, which are located under the second through holes of the pull rods, are provided with guide grooves; a pressing plate is arranged above every pull rod through a screw with one end fixedly connected with the pressing plate.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, in particular to a clamp with a built-in compression linkage mechanism. Background technique [0002] Large-diameter, high-cone thin-walled casing parts of aero-engines are typical weakly rigid parts, and their processing technology is poor; The process requirements are limited, and the pressing surface of the part is located on the installation edge of the lower end surface of the inner side of the part; in addition, because the inner part of the part is evenly installed with movable pressure plates to press the parts, and the lower end of the high-tube part is pressed, manual operation is very difficult, and the pressing The force is not uniform, and the efficiency of parts clamping is low. When processing the end face of the outer surface of the part, because the part is a thin-walled, large-diameter, and high-cone structure, the processing vibration is easily deformed, so that the surfa...

AI Technical Summary

Problems solved by technology

[0002] Large-diameter, high-cone thin-walled casing parts of aero-engines are typical weakly rigid parts, and their processing technology is poor; The process requirements are limited, and the pressing surface of the part is located on the installation edge of the lower end surface of the inner side of the part; in addition, because the inner part of the part is evenly installed with movable pressure plates to press the parts, and the lower end of the high-tube part is pressed, manual operation is very difficult, and the pressing Uneven force, low part clamping efficiency

When processing the end face of the outer surface of the part, because the part is thin-walled, large-diameter, and high-cone structure, the processing vibration is easy to cause deformation, so that the surface quality, shape tolerance and dimensional parameters of the part cannot meet the technical requirements of the process

The problems of low processing and clamping efficiency and processing deformation of such casing parts have always been urgent problems to be solved in the engine manufacturing industry.

Especially in the case of high requirements on the shape and position error and dimensional accuracy of the parts, they are very sensitive to vibration, cutting force and cutting temperature, etc., easy to deform and generate vibration during processing, and it is difficult to control the processing accuracy and improve the processing efficiency.

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