A Blind Hole Radial Rotary Precision Forging Technology and Radial Rotary Forging Device for Shaft Parts

Abstract

The present invention proposes a blind hole radial forging precision forging process and a radial forging device for shaft parts, including a mandrel, a mandrel manipulator, a bar to be processed, a GFM rotary forging precision forging machine, and a driving chuck; The GFM rotary forging precision forging machine includes the upper left hammer, the lower left hammer, the upper right hammer, and the lower right hammer. The bar to be processed is placed between the upper left hammer, lower left hammer, upper right hammer, and lower right hammer. During this period, one end of the bar to be processed is clamped on the drive chuck, and the other end is pressed against the mandrel, and the end against the mandrel is the end of the blind hole to be processed; compared with the traditional processing technology, the device and method of the present invention have the following advantages: Advantages: 1) Saving materials and processing hours, not only saving materials, but also improving efficiency. Manufacturing efficiency is an urgent need for wartime military supplies; 2) Forgings have good performance, and the strength of the shell is greatly improved compared with the original processing technology.

Description

technical field [0001] The invention relates to the technical field of forging processing of shaft parts with blind holes, in particular to a blind hole radial swaging precision forging process and a radial swaging device for shaft parts. Background technique [0002] With the development of modern aviation and military industry, the performance requirements for large-scale missile products are constantly increasing, and large-scale missile shells must also strictly meet quality requirements such as quality, grain size, and sufficient strength to meet the country's needs for military products such as missiles; at the same time , with the rapid development of high-performance fighter jets and large ships, the demand for large missiles is increasing, and the rapid manufacturing and production of missiles has become an important strategic demand in the new era. [0003] For the shape of the missile shell structure, see figure 1 , for the processing of large missile shells, alm...

AI Technical Summary

Problems solved by technology

[0003] For the shape of the missile shell structure, see figure 1 , for the processing of large missile shells, almost all enterprises use traditional processing technology to form large-diameter rod-shaped blanks through free forging technology to form semi-finished forgings with sufficient cutting allowances, and finally cut and process the inner holes according to the drawing size; due to large missiles The inner hole is large, and the traditional cutting method is adopted. On the one hand, it is difficult to process and the cost of cutting loss is high.

In the second aspect, a large amount of material is removed by cutting, resulting in a great waste of material and cost

In the third aspect, the efficiency is low, resulting in a great waste of time

[0004] The invention patent with application publication number CN105057539A discloses a forging die and a forging method for blind hole forgings. From the process link to the forming, it is possible to manufacture and produce forged blocks with blind holes, but there are the following problems in the production process, the size deviation of a block is not easy to control, second, the mandrel is easy to deform or even damaged, and the size deviation of the diameter of the blind hole cannot be determined. Guarantee, (the WHF method is a wide anvil strong reduction method, which changes the internal structure of the forging by a large reduction, and produces an internal texture to enhance its plasticity and tensile strength indicators), the mandrel needs to be kept in the forging during the WHF reduction process The high temperature conditions of the internal and external forgings increase the possibility of mandrel damage. Third, compared with one-time forming, the multiple heating-mandrel extrusion-anvil forging process is prone to coarse grains, reduced material toughness, and easy to produce strain cracks. Cannot be applied to missile casing materials

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