High-efficiency and high-precision fixture of aircraft undercarriage bracket and clamping method thereof

Abstract

The invention discloses a high-efficiency and high-precision fixture of an aircraft undercarriage bracket. The fixture comprises a fixture base plate, a fixing module, a pressing module and an auxiliary positioning piece; the fixture base plate comprises a front part, a neck part and a back part; the fixing module comprises a dovetail base, a dovetail positioning block, a positioning shaft, a positioning plate, an expansion mandrel, an expansion block, an expansion bolt and an endless bolt; the positioning plate is fixed at the back part; the expansion block and the expansion bolt respectivelycooperate with the external and the internal of the expansion mandrel; the pressing module comprises a front pressing module, a middle pressing module and a back pressing module for respectively pressing the front, middle and back parts of workpieces; and the auxiliary positioning piece comprises a movable steel ball positioning screw rod capable of adjusting the height and positioned below the workpieces, a positioning support column and a front movable screw rod. Through ordered cooperation of the fixing module, the pressing module and the auxiliary positioning piece, the clamping operationis clear, the errors are greatly reduced, and the positioning clamping precision and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of mechanical clamps, and in particular relates to a high-efficiency and high-precision clamp for aircraft landing gear brackets and a clamping method thereof. Background technique [0002] The aircraft landing gear bracket is an important part of the aircraft landing gear, usually the upper anti-twist bracket and the lower anti-twist bracket are used together. The upper end of the upper anti-twist bracket is hinged with the outer cylinder of the shock-absorbing strut, the upper end of the lower anti-twist bracket is hinged with the inner cylinder of the shock-absorbing strut, and the upper and lower anti-twist brackets are also hinged together. The three hinge axes are parallel and perpendicular to the shock-absorbing strut, so that the inner cylinder and the outer cylinder of the shock-absorbing strut can move telescopically, but cannot rotate relative to each other. Because the function of the anti-twist bracket i...

AI Technical Summary

Problems solved by technology

However, due to the influence of heat treatment deformation factors, there are difficulties in finishing machining such as high hardness (HRC42~45), unstable dimensions, high processing difficulty, and low processing efficiency.

Images