Necking-down spinning numerical-control forming equipment for corrugated pipe type thin-walled parts

Abstract

The invention provides necking-down spinning numerical-control forming equipment for corrugated pipe type thin-walled parts. The necking-down spinning numerical-control forming equipment comprises a machine tool, a spindle device, a spinning roller device and a tail jack device; the spindle device, the spinning roller device and the tail jack are disposed on the machine tool in sequence; and a core die and a corrugation die which is disposed outside the core die in a sleeving mode are disposed between the spindle device and the tail jack device. The spinning roller device comprises a spinningroller frame and a spinning roller; the spinning roller device is in sliding connection with the machine tool; a machining area is disposed on the spinning roller frame; one end of the core die is connected with a spindle in the spindle device; the corrugation die penetrates through the machining area on the spinning roller frame to be connected with the tail jack device; and the spinning roller is disposed in a spinning roller frame and can perform radial servo feeding relative to the core die. The tail jack device comprises a tail seat frame body and a tail jack; the tail seat frame body isin sliding connection with the machine tool; the tail jack is mounted on the tail seat frame body and can perform axial feeding and radial transverse movement; and annular male dies are uniformly distributed on the outer wall of the corrugation die. By means of the necking-down spinning numerical-control forming equipment for the corrugated pipe type thin-walled parts, the potential quality hazards of transverse and longitudinal welding seams and welding defects which are prone to occurring in a welding seam intersection region by a traditional tailor welding process of corrugated pipes are eliminated.

Description

Technical field [0001] The invention belongs to the technical field of tube-type parts spinning equipment, and specifically relates to a large-scale, thin-walled tube-type part necking and spinning device. Background technique [0002] Tunnel pipes are the pipelines for transporting fuel for my country's aerospace products, and their quality will directly affect the reliability of the products. It is understood that the United States, Japan and other developed countries have adopted the spinning process to integrally form large-diameter tunnel tubes. The integral spinning forming process can effectively avoid the influence of the vertical and horizontal welds of the traditional welding process on product quality, and significantly improve the product reliability of the model. . Because this technology involves the most advanced aerospace product manufacturing technology, these countries have technically blocked my country for this technology and related large-scale spinning equi...

AI Technical Summary

Problems solved by technology

The tunnel pipe formed by this method contains a longitudinal weld that runs through the entire length and multiple circumferential welds. Excessively long welds and the interlacing of longitudinal and circumferential welds will cause a large number of welds in the intersecting area of ​​the transverse and longitudinal welds. Welding defects, stress corrosion and fuel corrosion are also quite serious, the sealing performance is difficult to guarantee, and the quality control is difficult. The quality hidden danger will directly affect the reliability of the model product and cannot meet the requirements of the new model product.

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