Hollow outer flange part extrusion forming mold and male mold thereof

Abstract

The invention relates to a hollow outer flange part extrusion forming mold and a male mold of the hollow outer flange part extrusion forming mold. The hollow outer flange part extrusion forming mold comprises a working part, wherein the working part comprises an upper extrusion part and a lower extrusion part; the upper extrusion part is used for extruding an outer flange of a hollow outer flange part; the lower extrusion part is used for extruding a tube part of the hollow outer flange part; the upper extrusion part is detachably connected with the lower extrusion part; the outer diameter of the upper extrusion part is greater than that of the lower extrusion part; the lower end surface of the upper extrusion part is a flange extrusion surface; the peripheral surface of the lower extrusion part is a tube part extrusion surface. With a combined male mold structure, the hollow outer flange part extrusion forming mold is convenient to replace, cost-reducing and convenient to release; waste caused by damage to the male mold or parts is avoided.

Description

technical field [0001] The invention relates to the technical field of metal extrusion forming, in particular to an extrusion forming die of a hollow outer flange part and a punch thereof. Background technique [0002] The extrusion process is widely used in the field of pressure processing due to its strong metal deformation ability, high product quality, high material utilization rate, and low equipment investment. The hollow outer flange part is a hollow tubular part with an outer flange at one end. This kind of part is generally formed by positive extrusion. The punch often used in the existing extrusion mold is generally an integral punch. This integral punch mainly has the following problems: 1) When the ejection slope of the punch is small, the workpiece is easily wrapped on the punch and it is difficult to take it off, and the entire punch can only be destroyed together; When it is too large, it will reduce the utilization rate of materials; 2) When the punch is use...

AI Technical Summary

Problems solved by technology

The hollow outer flange part is a hollow tubular part with an outer flange at one end. This kind of part is generally formed by positive extrusion. The punch often used in the existing extrusion mold is generally an integral punch. This integral punch mainly has the following problems: 1) When the ejection slope of the punch is small, the workpiece is easily wrapped on the punch and it is difficult to take it off, and the entire punch can only be destroyed together; When it is too large, it will reduce the utilization rate of materials; 2) When the punch is used repeatedly, due to the continuous wear of its working part, when this part is worn to affect the forming accuracy, the entire punch must be replaced, thereby increasing increased production costs

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