Forging die of large inclination tapered hole like forge piece and forging technology

Abstract

A forging die of a large inclination tapered hole like forge piece and a forging technology belong to the machinofacture technology. The designed special tooling consists of two parts of a core shaft and a core shaft sleeve, wherein the core shaft is a stepped long shaft, the core shaft sleeve is a multistep cylindrical structure, the external structure of the core shaft sleeve is determined by the shape of a taper sleeve bore, the forming technology is as follows: after a steel ingot is forged, pulled out and fed, then is forged to be thick, punched, reamed to a certain size and impressed, and an stretching core rod is pulled to the length of a finished product, is forged to the size with the special tooling and is finished, so the finished product is produced. The invention innovates the forging technology of the large inclination tapered hole like forge piece, the special equipment is designed, the problem of overlarge forging allowance of forge piece bores of the kind is ingeniously solved, the raw material consumption and cold machining allowance are reduced, so the cost is reduced, the product quality is improved, and accordingly, the market competitiveness of the product is improved.

Description

technical field [0001] The invention belongs to the technical field of machinery manufacturing, and relates to a forging process for hole products and equipment used for forging. Background technique [0002] In the existing forging molding equipment, there is no mold for forging the slope and steps of the inner hole, and free forging is completely used. The traditional forging molding process for products with large slope tapered holes consists of the following process steps: [0003] The first fire: steel ingot press pliers handle, chamfering, drain port; [0004] The second fire: upsetting, pulling out, cutting; [0005] The third fire: upsetting, punching, rounding, flat end face; [0006] The fourth fire: reaming to size, finishing, finished product; [0007] The disadvantages of traditional crafts are: [0008] (1) The forging allowance of the inner hole is too large, resulting in a large forging weight and a waste of raw materials; [0009] (2) The slope and step...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a forging die and forging process for forgings with large-slope conical holes, so as to solve the problem that the forging allowance of the inner hole is too large in the prior art, resulting in a large forging weight and a waste of raw materials; there is no oblique forging of the inner hole. The degree and steps are completely free forging, resulting in a large machining allowance; the slope and steps of the inner hole are formed by cold working, resulting in discontinuous fiber structure and poor mechanical properties.

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