Method and die carrier for forging and molding special-shaped cross section metal blank with through holes

Abstract

The invention relates to a method and a die carrier for forging and molding a special-shaped cross section metal blank with through holes. The molding method comprises that: three die setting stations are arranged on a set of die carrier and are provided with specific dies for preforming, extrusion molding and wad punching respectively; and the blank passes through the dies of the three stations respectively in three strokes of a sliding block of pressure equipment, and the pressure equipment performs the preforming, extrusion molding and wad punching so as to finish the whole molding process of the work piece. The method and the die carrier have the advantages of finishing the whole molding machining process of a forge piece on one piece of pressure equipment by adopting the machining processes of preforming, extrusion molding and wad punching, and meeting the objective requirements of a design process and actual operation because the three-station die carrier structure with an independent clamping function and a die offset adjustment function is arranged on the tool structure.

Description

technical field [0001] The invention relates to a forging forming method and a mold base of a metal with a special-shaped cross-section with a through hole, in particular to a hot extrusion and closed forging forming method and a mold base of a metal with a special-shaped cross-section, belonging to the field of forging. Background technique [0002] Extrusion and closed forging have been widely used as a method of metal forging, and the forming process is different according to the structure and requirements of each workpiece. For example: the end coupler part is a part with special-shaped inner and outer contours, and the inner and outer contours are not concentric. There are strict requirements on the inner and outer dimensions of the part. Most of the blanks currently used for this part are open die forgings. The shape of the forgings has a certain forging slope. The extrusion method only extrudes the outer contour (the inner hole and the flat groove are not formed, and...

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Problems solved by technology

Most of the blanks currently used for this part are open die forgings. The shape of the forgings has a certain forging slope. The extrusion method only extrudes the outer contour (the inner hole and the flat groove are not formed, and they are still completed by machining), and the material consumption and machining workload are also relatively large; in recent years, there have also been researches on the method of warm extrusion forming. Although the inner and outer contours are formed, it needs 4 sets of pressure equipment, and it can be completed through multiple processes such as billet making, pre-forming, extrusion, punching, and shaping, and has not been used in production.

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