Overlapping type combined forging method

A technology of sleeve forging and forging, applied in the field of superimposed sleeve forging process, can solve the problems of inability to apply the sleeve forging process, easy to produce deformation, increase the correction process, etc. Effect
CN105689615AInactive Publication Date: 2016-06-22NANCHANG GEAR FORGE PLANT
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NANCHANG GEAR FORGE PLANT
Publication Date
2016-06-22
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to an overlapping type combined forging method. The overlapping type combined forging method is characterized by comprising the steps that two or more parts are overlapped and combined into a connected part, then the chipping allowance is added to the outer surface of the connected part to form a combined die forging, after combination, from the projection areas, the small forging is wrapped by the large charging, the projection area of the large forging is not increased, and the combined die forging or the connected part is separated through blanking, heating, die forging and cutting machining. By means of the reasonable combination and the selected proper separation method, forgings which cannot be subjected to combined forging in a traditional method can be forged through the combined forging method, and the combined forging application range is widened. After the overlapping type combined forging is formed, two or more forgings consume one finishing allowance jointly, and therefore material consumption is reduced. A cutting separation face can be directly used as a finish machining locating basis, and the effects of saving materials, reducing deformation force and improving the production efficiency can be achieved.
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Description

technical field

[0001] The invention belongs to the field of manufacturing metal mechanical parts, and relates to a metal die forging process in the early stage of forming mechanical parts, in particular to a superimposed sleeve forging process. technical background

[0002] Under certain technological conditions, using the position and material of the punching and skin of the large forging to carry out (open or closed) die forging, the forging processing method of obtaining two or more die forgings of different shapes and sizes is called sleeve forging. It is usually used for the manufacture of rotary forgings, such as ring gears, rings and similar shaped forgings.

[0003] There are two main types of sleeve forging processes introduced in the existing literature, namely step-by-step sleeve forging and simultaneous sleeve forging.

[0004] The so-called step-by-step sleeve forging is to forge a large forging first, and then use the skin separated from the large forging (de...

Claims

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