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Process for manufacturing small-sized looseness-proof screw

A manufacturing process and screw technology, applied in the field of small anti-loosening screw manufacturing technology, can solve the problem of small anti-loosening screws without manufacturing process

Inactive Publication Date: 2010-06-16
郑洪琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no efficient manufacturing process for the small anti-loosening screws, the application of small anti-loosening screws is restricted

Method used

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  • Process for manufacturing small-sized looseness-proof screw
  • Process for manufacturing small-sized looseness-proof screw
  • Process for manufacturing small-sized looseness-proof screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Specific implementation 1

[0029] This specific implementation takes the small anti-loosening screw 1 of M1.4x5mm as an example. The metal wire is used as the raw material, and the wire whose diameter matches the diameter of the screw 1 is selected as the raw material according to the hardware manual to facilitate processing. Cut the wire with a length of 6mm, such as figure 1 As shown, the volume is basically equal to the volume of the small anti-loosening screw 1, and then a general multi-station cold heading machine is used to pre-head one end of the blank, such as figure 2 As shown, the end is pre-upset into a flat cylinder with a slightly larger diameter to form the head 2 blank of the screw 1. The diameter of the head 11 depends on the specification or model, such as a round head screw, a cylindrical head screw or a countersunk head screw. 1.2~5 times of the diameter of the cylindrical portion, the present specific embodiment takes the cylindrical head screw a...

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PUM

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Abstract

The invention relates to a process for manufacturing a small-sized looseness-proff screw. The processing process divides the whole processing process into several working procedures, adopts the processing ways of cold upsetting, threading, and the like and has high processing speed and efficiency; materials can be not limited to copper materials only, and material consumption hardly exists, therefore, compared with other ways, the cost of the small-sized looseness-proof screw can be reduced.

Description

technical field [0001] The invention relates to a manufacturing process of small anti-loosening screws. Background technique [0002] At present, many glasses still need to use screws as fixing and connecting parts, which are used to clamp the lenses or connect the temples. Since the screws used on the glasses are all small screws with a small diameter and shallow threads, they often loosen and fall off during use. And existing anti-loosening screw generally adopts the following two ways in order to achieve the purpose of anti-loosening: one is to apply glue on the threaded part on the anti-loosening screw body, and achieve the purpose of anti-loosening by its viscosity; A ratchet is provided on the annular lower plane of the head of the screw body to prevent the screw from backspinning and loosening. However, the above two methods are not suitable for use on small-diameter screws, especially small screws of M3 and below. For this reason, a kind of small anti-loosening sc...

Claims

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Application Information

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IPC IPC(8): F16B35/00B21K1/44B21K1/56
Inventor 郑洪琦
Owner 郑洪琦