Final-forming forging mold of fan-shaped forging

A technology for final forming and forging, which is used in manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. It can solve the problems of unreasonable manufacturing process of fan-shaped forgings, and achieve regular and beautiful appearance, which is beneficial to Machining, the effect of small machining allowance

Inactive Publication Date: 2013-08-07
QINHAN PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the existing worm wheel forging structure and the existing fan-shaped forging manufacturing process used in high-voltage switch products are not reasonable enough

Method used

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  • Final-forming forging mold of fan-shaped forging
  • Final-forming forging mold of fan-shaped forging
  • Final-forming forging mold of fan-shaped forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as Figure 4 , the final forming die of the fan-shaped forging, including a punch 2 and a die 4, a punch sleeve 3 is arranged outside the punch, a pressing plate 1 is arranged at the upper end of the punch; a prestressing ring 5 and a pressing plate are arranged in sequence outside the die 4 6. The punch extends into the inner cavity of the die, and the ejector 7 is arranged in the inner cavity of the die. The lower end of the punch, the upper end of the ejector and the inner cavity of the die form a flow space for the preformed blank.

[0018] Such as Figure 4 , combined with figure 2 and image 3 , the preformed blank is placed in the final forming mold, and the blank flows and deforms in the cavity of the die to the surroundings, filling the cavity and forming the outer ring flange and the center hole of the final forming blank of the fan-shaped worm gear.

[0019] Among them, the mold cavity should be sprayed with lubricant before and after the final formi...

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Abstract

The invention discloses a final-forming forging mold which comprises a punch (2) and a matrix (4), wherein a punch sleeve (3) is arranged outside the punch (2); a prestressed ring (5) is arranged outside the matrix (4); the punch (2) extends into an inner chamber of the matrix; a knockout (7) is arranged in the inner chamber of the matrix; the lower end of the punch, the upper end of the knockout, and the inner chamber of the matrix form flow space for blank; and preformed blank is placed in a final-forming mold to form an outer ring lug and a central hole of a final-forming blank of a worm sector. A product forged by the forging mold has the advantages of high material density, orderly and attractive appearance without flash burrs and small machining allowance, not only are materials saved, but also machining is facilitated.

Description

technical field [0001] The invention relates to the technical field of precision warm forging, in particular to a mold for forging a fan-shaped worm wheel, one of the parts in a high-voltage switch operating mechanism. Background technique [0002] At present, the manufacturing method of fan-shaped forgings in the industry is relatively troublesome: one process is to preform the bar material twice, and then use open die forging to final forge the preformed intermediate blank; the other process is to make the bar material The blank is pre-forged by free forging, and after forging, the pre-formed intermediate blank is finally forged by open die forging. These two processes are cumbersome, the precision of forgings is poor, the flash and burrs are large, and the material consumption is high. [0003] For the high-voltage switch operating mechanism used in my country's high-voltage power transmission and transformation industry, due to various reasons, the structural shape of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21J3/00
Inventor 辛选荣贺成松刘新成史志欣史颂华
Owner QINHAN PRECISION IND CO LTD
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