A double-sided rolling device for thin-walled structures

Abstract

The invention provides a double-side rolling device for a thin-wall structure. The double-side rolling device comprises a cutter bar, a rack, a sliding rail, knife rests, a hydraulic cylinder and rolling heads. The cutter bar is connected to the rack, the bottom of the rack is provided with the sliding rail, the sliding rail is sequentially provided with three sliding blocks, the sliding blocks on the two sides are each connected with a knife rest, and the middle sliding block is provided with the hydraulic cylinder; a piston rod of the hydraulic cylinder is hinged to each of the two knife rests through a hinge, the lower ends of the two knife rests are connected with the rolling heads, and the two rolling heads are opposite to each other. The device applies pressure from the two sides of the thin-wall structure, it is guaranteed that the pressure on the two sides is balanced, and three lines, namely the symmetrical axis of the two rolling heads, the midcourt line of the whole device and the midcourt line of the thin-wall structure, are aligned with one another, introduction of unnecessary workpiece deformation is avoided, the rolling force can be accurately controlled, the quality integrity of the machining surface can be increased, residual compressive stress is introduced, residual stress redistribution in a workpiece is promoted, and the purpose of deformation correction is achieved.

Description

Technical field [0001] The invention relates to a device for double-sided rolling of a thin-walled structure on a workpiece, and belongs to the technical field of rolling processing. Background technique [0002] Aviation integral structural parts are generally processed by milling pre-stretched plates, with large material removal and low structural rigidity. Under the influence of factors such as initial plate stress, processing stress, milling force 1, milling heat and clamping, after the processing is completed Severe deformation will occur, and the accuracy required for aircraft assembly cannot be achieved. The rolling process is used to locally roll the aviation integral structural parts, introduce residual compressive stress, induce the redistribution of residual stress inside the structural parts, and achieve the purpose of deformation correction. This is a new correction idea. [0003] Since the rolling process was first applied to the surface strengthening of axles in Ger...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the structural characteristics of thin wall and low rigidity of aviation integral structural parts, and the shortcomings of existing traditional rolling devices, the present invention provides a double-sided rolling device for thin-walled structures

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