Preforming forging die of sector-shaped forge piece

A pre-forming and forging technology, which is used in the manufacture of tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc., can solve the problems of unreasonable manufacturing process of fan-shaped forgings, and achieve regular and beautiful appearance and good machining efficiency. The effect of small amount and high material density

Inactive Publication Date: 2013-05-08
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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  • Preforming forging die of sector-shaped forge piece
  • Preforming forging die of sector-shaped forge piece
  • Preforming forging die of sector-shaped forge piece

Examples

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Effect test

Embodiment Construction

[0016] Such as figure 2 , the preformed forging die of the fan-shaped worm wheel forging, including a punch 2 and a die 4, a punch sleeve 3 is arranged outside the punch 2, a pressing plate 1 is arranged at the upper end of the punch; a prestressing ring 5 and a pressing plate 6 are arranged outside the die in sequence ; The punch extends into the cavity of the die, and the ejector device 7 is set in the cavity of the die, and the remaining space in the cavity of the die is the flow space of the blank.

[0017] Such as figure 2 and image 3 , the bar is placed in the preforming mold, the material flows and deforms in the inner cavity of the die, and fills the cavity to form a fan-shaped preformed blank with a certain thickness.

[0018] Among them, the mold cavity should be sprayed with lubricant before and after pre-forming forging, and the mold cavity should be cleaned and lubricated with high-pressure air after each forging product. The specific method is: use a high-pr...

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Abstract

The invention discloses a preforming forging die of a sector-shaped forge piece. The sector-shaped forge piece is a sector-shaped worm wheel which is one of the parts of a high-pressure on-off operating mechanism. The preforming forging die of the sector-shaped forge piece comprises a convex die (2) and a concave die (4) and is characterized in that a convex die sleeve (3) is arranged outside the convex die (2), a prestressing ring (5) is arranged outside the concave die (4), the convex die (2) protrudes into an inner cavity of the concave die, an ejector (7) is arranged in the inner cavity of the concave die, and the residual space of the inner cavity of the concave die is a flowing space of blanks. Bars are arranged in the preforming forging die to form sector-shaped preforming blanks with a certain thickness. Products forged by the forging die is high in material density, regular and beautiful in appearance, free of overlaps and burrs, small in machining allowance, and not only material-saving but also favorable for machining.

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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