Cold pendulum rolling precision forming method for part with thin wall and deep narrow groove

A technology of precision forming and cold rolling, which is applied to other household appliances, household appliances, metal processing equipment, etc., to achieve the effects of low production cost, high material utilization rate, and good organizational and mechanical properties

Active Publication Date: 2018-07-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent of the present invention proposes a precision forming method of thin-walled deep narrow groove parts by cold rotary rolling, which effectively solves the technical problems of cold rotary rolling precision forming of such parts

Method used

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  • Cold pendulum rolling precision forming method for part with thin wall and deep narrow groove
  • Cold pendulum rolling precision forming method for part with thin wall and deep narrow groove
  • Cold pendulum rolling precision forming method for part with thin wall and deep narrow groove

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Embodiment Construction

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] Such as figure 1 shown, as figure 1 and figure 2 , the finished product of the deep and narrow groove parts processed by the inventive method is 25.3mm high, and the diameter is 44mm, and the deep and narrow groove is wide 4.6mm, and the depth is 17mm.

[0028] Such as figure 1 As shown, the geometric shape of the thin-walled deep narrow groove part is complex, so the composite forming process of hot forging billet-cold swing rolling final forging is adopted. The specific process is: bar blanking-hot forging billet-spheroidizing annealing softening-cold swing Rolling and forging. The forgings are obtained after the final forging by cold swing rolling, and then conventional machining such as deburring is suff...

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Abstract

The invention relates to cold pendulum rolling precision forming method for a part with a thin wall and a deep narrow groove. The cold pendulum rolling precision forming method is characterized by comprising the following steps that S1, a prefabricated blank is manufactured; S2, the prefabricated blank is placed on a cold pendulum rolling concave die, and a cold pendulum rolling head is placed above the prefabricated blank, wherein the cold pendulum rolling head is a rotary cone, a conical point of the cold pendulum rolling head is located at an intersection point position of the axis of a forge piece and an upper surface, a bus is matched with a bus of the deep narrow groove of the part, the cold pendulum rolling concave die is matched with the back surface of the deep narrow groove of the part, a distribution groove is formed in the middle of the cold pendulum rolling concave die cavity, a pendulum head supporting rod is arranged inside the cold pendulum rolling head, and a concave die ejecting rod is arranged in the cold swing concave die, and the concave die ejecting rod is designed at the bottom of the distribution groove; and S3, the pendulum head penetrates through the multi-pass deep narrow groove of the continuous local forming part, and the back surface of the deep narrow groove of the part is formed by the cold pendulum rolling concave die. According to the cold pendulum rolling precision forming method, insufficient filling and folding defects are effectively eliminated, meanwhile, the stress state of the die is effectively improved, the service life of the dieis prolonged, and therefore the part with the thin wall and the deep narrow groove can be smoothly perform cold pendulum rolling precision forming.

Description

technical field [0001] The invention relates to the technical field of processing and manufacturing thin-walled deep-narrow groove parts, and more specifically relates to a precision forming method for thin-walled deep-narrow groove parts by cold rotary rolling. Background technique [0002] With the rapid development of high-end equipment, there is a huge demand for high-performance complex parts. Thin-walled deep and narrow groove parts are key parts of high-end equipment, and their manufacturing accuracy and performance have an important impact on the service performance and service life of high-end equipment. Due to the thin wall and deep and narrow groove, it is difficult to form parts with thin wall, deep and narrow groove by traditional integral forging forming technology. At present, thin-walled deep and narrow groove parts are mainly produced by cutting. The cutting cycle is long, the production efficiency is low, the material utilization rate is low, and the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21K21/04
CPCB21J5/008B21K21/04
Inventor 韩星会华林冯玮金秋庄武豪胡亚雄
Owner WUHAN UNIV OF TECH
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