Molding mold for first radial inner ring of thin-walled cylinder inner wall

Abstract

The invention discloses a molding mold for a first radial inner ring of a thin-walled cylinder inner wall. The molding mold is a vertical axial sleeved mold composed of a core mold, a cylinder mold, a mold sleeve and a bottom mold jointly; the bottom mold is sleeved with the mold sleeve to form an outer mold structure, the internally-arranged core mold is matched with an axial counterbore of the bottom mold in a positioning mode through a small-end shoulder, the height of the small-end shoulder of the core mold is larger than the depth of the axial counterbore of the bottom mold, and the difference value is equal to the thickness of the radial inner ring arranged in a workpiece; the cylinder mold is axially inserted into a mold cavity reserved in the core mold along an inner hole of the mold sleeve, pressure is exerted to the cylinder mold, and then an upset-extruding structure on the internally-arranged workpiece is formed. According to the molding mold, one-step upset-extruding molding processing on the radial inner ring of the inner wall of the workpiece is achieved through mold upset-extruding, most important of all, the workpiece not only retains original fibers of a metal material but also is more compact in texture after being subjected to upset-extruding, and therefore the product is high in strength and rigidity. The molding mold belongs to a cold upset-extruding molding mold, adopts a one-step upset-extruding molding technology and is high in production efficiency and especially suitable for batch production and application.

Description

technical field [0001] The invention relates to a technology in the field of metal plastic forming, in particular, the invention relates to an upsetting extrusion forming die, especially a radial inner ring forming die for the inner wall of a thin-walled cylinder. Background technique [0002] Thin-walled tube parts are parts of conventional structures and are used in many occasions. Under the existing technical conditions, there are two main types of cutting forming process and casting forming process for making thin-walled cylindrical parts with radial inner rings on the inner wall and unequal wall thickness. The most widely used in the manufacturing industry today is the mechanical cutting forming process. The blank can be machined to obtain the expected precision size and shape tolerance. However, in addition to the large amount of cutting, the material utilization rate of the mechanical cutting forming process is also very low. The biggest disadvantage is that the orig...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the problem that the thin-walled tube manufactured by mechanical cutting and casting forming technology is not suitable for automobile matching, and proposes a forming die with a radial inner ring on the inner wall of the thin-walled tube matching the upsetting extrusion forming process. The die has a simple structure and reasonable force , Easy demoulding, good forming quality

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