Method for manufacturing cold-forged wing bolts

Abstract

A method for manufacturing cold-gorged wing bolts uses short basic rods cut from a solid linear metal material Under the conditions of maintaining the combination capacity of metal material organization to possess close-fitting strength, the short basic rods are cold-forged and compressed into shape through several steps of shaping and trimming and then treated with thread rolling to finish wing bolts. By so designing, the wing bolts can be manufactured simply and quickly, able to lower cost, obtain better quality and production capacity and thus greatly elevate economic gain.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a method for manufacturing cold-forged wing bolts, particularly to one shaping wing bolts mainly by cold forging and compressing. Under the conditions of maintaining the combination capacity of material organization to possess close-fitting strength, a solid linear metal material is cut into short basic rods to be roughly shaped, trimmed, automatically cold-forged, compressed into shape, and then treated through thread rolling to make up wing bolts, able to shorten a manufacturing process, quicken shaping, lower cost, elevate quality and production capacity and thus achieve economic gain.[0003]2. Description of the Prior Art[0004]Substantially, mutual screwing and locking of male threads and female threads is an essential way of mechanical combination. Screw members are classified into various types according to different usage and desired purposes. Take bolts for instance, hexagonal bolts and ...

AI Technical Summary

Benefits of technology

[0010]A first objective of this invention is to offer a successive and quick process for manufacturing cold-forged wing bolts.

[0014]A fifth objective of this invention is to entirely use the metal linear material for reducing waste material and elevate economic gain.

[0015]The last objective of this invention is to offer a method for manufacturing wing bolts, able to heighten quality and production capacity and reduce the percentage of unqualified products to the minimum.

[0016]The method for manufacturing wing bolts in the present invention is to have a solid linear metal material cut into short basic rods to be cold-forged and compressed into shape orderly through shaping and trimming, and then treated through thread rolling to finish wing bolts. By so designing, it can simplify a manufacturing process, reduce equipment of machines and molds, lower cost, quicken shaping and enhance production capacity. In addition, the method for manufacturing wing bolts of this invention will not spoil the combination capacity of the organization of metal material for maintaining the close-fitting strength of the metal material, able to reinforce stability of two wings. Moreover, the whole outline of the wing bolt is smooth, able to enhance quality and greatly elevate industry competitive capability.

Problems solved by technology

1. Riveting by forceful compression may spoil the organization and structure of the metal material, impossible to possess close-fitting strength of the metal material and likely to make riveting portions chapped and loosened.

2. After a wing bolt is used repeatedly, the riveting portion of the wing bolt will become loosened and it is impossible to apply force to the riveting portion during screwing and locking the wing bolt.

3. The wing nut base prepared in advance is made through complicated processes, slow in processing and unable to heighten production capacity. Referring to FIG. 7, the wing nut base is made of metal sheets that are repeatedly and forcefully compressed and bent into shape. Formed in this way, the wing nut base is easy to produce sharp burr to cut a person's fingers and liable to be oxidized and corroded when exposed to sunlight and rain, easy to be broken by a pulling force.

4. Referring to FIG. 5, the wing nut base prepared in advance can be cast into shape by sand molding. In this way, molten iron is poured into a sand mold to be cast, cooled off and shrunk to produce stress concentration. Made in such a way, the wing portions at two sides are likely to be broken by large external force, having rough surfaces.

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