A method for forging multi-directional special-shaped journal

Abstract

A forging method for multi-directional special-shaped journal comprises the following steps: step A, providing a pre-forging die for molding the frustum, inserting a bar blank into the pre-forging die and pre-forging by free forging, molding the frustum and upsetting the blank exposed from a cavity into a cuboid; step B, drawing out the upset cuboid blank corresponding to one side of a first arc plate on a hammer anvil; step C, turning over the blank 90 degrees, placing it on the middle part of a core rod strip for hammering so as to bend the strip, completing the pre-forging; and step D, providing a final forging die, heating the blank provided in step C, putting it in the final forging die and completing final forging on a forging hammer. The forging method for multi-directional special-shaped journal provided by the present invention needs less special dies, has short technical process, completes forging-molding with only double heating and greatly improves the production efficiency.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a method for forging a multi-directional special-shaped journal for an aero-engine. Background technique [0002] The journal parts are generally the parts connected to the bearing on the shaft. These parts are mostly forged to manufacture blanks for subsequent machining. Most of the journal parts used in aero-engines have complex structures, multi-directional irregular shapes, long edges and thin walls, and are difficult to process. [0003] figure 1 It is a structural schematic diagram of a forged journal, figure 2 for figure 1 Schematic diagram of the structure of the journal from another perspective, Figure 3a for figure 1 A schematic diagram of the structure, Figure 3b for Figure 3a The schematic diagram of the B-direction local structure of , see Figure 1-3b As shown, the journal 1 is a double T-shaped four-way three-dimensional structure, and the whole forging...

AI Technical Summary

Problems solved by technology

[0005] Among them, pre-forging Ⅰ, Ⅱ, and Ⅲ processes are mainly for forming materials in each direction. The whole forging process involves 5 fires and 7 pairs of molds (forging dies, trimming dies, etc.), too many processes, and the cycle is too long. The operation of the first process is complicated, the efficiency is low, and the number of molds is large, the cost is large, the process is easy to be confused, and the product quality is unstable.

[0006] That is to say, the existing forging method for the journal 1 with the double T-shaped four-way three-dimensional structure is complicated to operate, takes a long time, is inefficient, and has unstable quality, and is not suitable for mass production

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