Multi-hole flexible tool suction cup for airplane thin-walled piece

Abstract

A multi-hole flexible tool suction cup for an airplane thin-walled piece comprises a suction cup body, a main air hole channel and a plurality of air exhaust hole channels. The air exhaust hole channels are arranged on the suction cup body in central symmetry. The total air hole channel is arranged in the suction cup body. The lower end of each air exhaust hole channel is connected with the main air hole channel. The air exhaust hole channels comprise four inner hole channels and eight outer hole channels, wherein the inner hole channels are arranged on the vertical axis and the horizontal axis of the suction cup body in central symmetry, the outer hole channels are evenly arranged on the suction cup body in central symmetry and located outside the inner hole channels, and the inner holechannels and the outer hole channels are all connected with the main hole channel. The outer side of the suction cup body is of a curved surface structure. According to the multi-hole flexible tool suction cup for the airplane thin-walled piece, by arranging the air exhaust hole channels and inner rubber matter filler and arranging outside volcano structures on the outer periphery of the inner airexhaust hole channels, when the thin-walled workpiece deforms, the workpiece can be supported, and an auxiliary supporting function is achieved; and the situation that the workpiece deformation generated under the action of the inner negative pressure of the suction cup influences the machining precision is avoided.

Description

technical field [0001] The invention relates to a technology in the field of aircraft manufacturing, in particular to a porous flexible tool suction cup used for aircraft thin-walled parts. Background technique [0002] Large, thin-walled parts in aircraft require edge trimming and drilling to meet production demands. With the improvement of aircraft performance, the requirements for trimming and drilling accuracy of thin-walled parts are getting higher and higher. The positioning accuracy and accurate clamping of thin-walled parts in flexible tooling are the factors that affect the trimming and drilling accuracy of thin-walled parts. one of the important factors. At present, the suction cup in the flexible tooling structure generally adopts a bowl-shaped structure, and cooperates with negative pressure to realize the positioning and supporting function of large thin-walled parts. [0003] The bowl-shaped suction cup has the following disadvantages: after the vacuum genera...

AI Technical Summary

Problems solved by technology

[0003] The bowl-shaped suction cup has the following disadvantages: After the vacuum generator is turned on, a large negative pressure is generated in the bowl-shaped suction cup, and a large force is generated on the side where the thin-walled part contacts the suction cup.

Moreover, due to the supporting effect of the bowl edge around the bowl-shaped suction cup, the force on the thin-walled part at the center and the thin-walled part at the bowl edge is uneven, resulting in partial concave deformation on the surface of the thin-walled part, which is not conducive to fine processing; second, the suction cup adopts Bowl-shaped structure, the suction cup has high toughness and is prone to large deformation, which will affect the direct pull of the contact between the thin-walled part and the suction cup, thereby affecting the positioning accuracy of the thin-walled part

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