Hole-reaming forming technology for internal and external specially-shaped surfaces

Abstract

The invention discloses a hole-reaming forming technology for internal and external specially-shaped surfaces, which belongs to the field of large-forging forging and forming technology. In the forming process disclosed by the invention, the shape of a symmetrical forging is designed as required, and special tooling equipment such as a swage block and a core saddle is designed according to the shape of the forging; and the forming process comprises the following steps: (I) forging design: designing the shape of a symmetrical forging; (II) tooling equipment design: designing a corresponding hole-reaming swage block according to the shape of the external shape surface of the forging, and designing a corresponding core saddle according to the shape of the internal shape surface of the forging; and (III) forging manufacturing: (1) blanking: blanking according to the weight requirement of the forging; (2) punching and reaming, and then forging by using a flat anvil and a mandril: according to the process design, forging blank material before hold-shrinking; and according to the characteristic of hole-shrinking deformation, before reaming, designing the forging into a structure the external shape surface of the forging has high end parts and a concave middle part; (3) hole-shrinking forging: forging a forged blank by using a normal mandril and a wide anvil, and then designing a hole-shinking forging process step; and (4) carrying out hole-reaming forming by using the swage block and the core saddle.

Description

technical field [0001] The invention belongs to the technical field of forging and forming of large forgings, and relates to a forging process of ring parts. Background technique [0002] Internal and external special-shaped face ring forgings, such as figure 1 As shown, the biggest feature of this type of forging is that the outer surface and inner surface are all changing geometric shapes, and the wall thickness values ​​​​are not necessarily the same everywhere. At present, the production processes of this kind of forgings at home and abroad include: (1) ring rolling forming method, the implementation of this process requires special ring rolling machinery, which is more suitable for small and medium forgings; (2) spinning forming method, the implementation of this process requires Special spinning machinery, suitable for small forgings; (3) Casting forming method, this process is suitable for the production of large, medium and small such parts, but the mechanical prope...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of hole-enlarging and forming technology of internal and external special-shaped surfaces to solve the problem that the existing technology consumes a lot of materials; the internal and external surfaces need to be formed by machining; the machining time increases and the production efficiency is low; after machining, the fibrous tissue of the forging is cut off , affecting the comprehensive performance of forgings and other issues

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