Manufacturing method of wing nuts

Abstract

A manufacturing method of wing nuts has a round metal wire cut into segments used as billets. The method includes a basic formation directly forging the billet to become a primary body consisting of an intermediate head and two curved wings connected with two ends of the intermediate head respectively, a wing trigging employed for forging the wings of the intermediate head to become butterfly wings with a curved edge and an edge formation effected by forging the intermediate head to form a positioning groove in the center of the top and the bottom side respectively. Then the semi-finished product is finished by drilling and threading. By this method, manufacturing processes can be shortened to obtain a rapid producing rate and lessen waste volume, lowering cost and advancing competition.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a manufacturing method of wing nuts, particularly to one able to simplify and shorten the manufacturing process. The raw material is a round metal wire that is cut into segments used as billets. Automatically Forged by continuous steps of a basic formation, a wing trigging and an edge formation, a semi-finished product is obtained. Then the semi-finished product is finished with drilling and threading to become a final product. By this method, manufacturing process can be simplified and shortened to obtain a rapid producing rate and lessen waste volume, lowering cost and advancing competition.[0003]2. Description of the Prior Art[0004]The conventional engagement of a bolt and a nut is based on that of corresponding male threads and female threads. Commonly, such a nut is formed with two wings, called as a wing nut, so that it can be tightly fastened with or screwed off the bolt by a tool (such ...

AI Technical Summary

Benefits of technology

[0016]Further a step of a primary wing trigging is added between the steps of the basic formation and the wing trigging, utilized to forge the wings of the primary body to achieve a primary micro trigging, so that a curved edge of the wings can be gradually obtained with more perfection.

Problems solved by technology

However, the procedures of casting include making a mold, melting a metal, casting and breaking the mold, constituting a complicated process.

And unfortunately the finished product is always accompanied with a plurality of cavities, resulting in forming a rough surface, having a poor quality and an inclination of fracture.

However, secondary processing is to raise cost because of an extension of manufacturing process.

However, such a manufacturing process is so complicated that producing effect is unable to be raised.

(B) As mentioned previously, the method needs six steps and diverse devices to enable a round metal rod made into wing nuts, taking a long manufacturing time and increasing cost.

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