Support tool for cold forming of thin-walled elbow and forming method

• Main Authors: HAN LIQIANG, YE JIANLIN, JI TENGFEI, WANG NING, WANG YAHUI, YUAN MINZHE, XI DALAI, LI NING
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2017
• Subjects: BLASTING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; COMBINED OPERATIONS; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WEAPONS

The invention discloses a support tool for cold forming of a thin-walled elbow and a forming method. The method comprises the steps of arranging the support tool in a straight pipe blank which is to be machined into an elbow, then performing cold pressing forming on the straight pipe blank by using a cold pressing mold, and taking out the support tool after cold pressing forming so as to obtain the elbow. The support tool and the forming method have the advantages of reliable and practical technique, simplicity in operation and high efficiency, and the problems of squashing, wrinkles and the like which are prone to occurring in arc positions in the cold pressing forming process of the nonferrous metal elbow are effectively solved; in addition, the tool is designed into two parts, so that the demoulding problem is solved, the quality and the rate of finished products of the elbow are increased, the production cost is greatly reduced, and economic benefits are obviously increased. 本发明公开了种用于薄壁弯头冷成型的支撑工装及成型方法，该方法