Knurling and sharp corner rubbing integrated forming method

A molding method and technology with sharp corners, applied in the direction of connecting members, nails, pins, etc., can solve the problems of unsatisfactory molding efficiency, and achieve the effect of improving molding effect, high molding efficiency and good molding effect.

Pending Publication Date: 2021-12-07
ZHOUSHAN 7412 FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this processing technology still needs to be operated step by step, and the molding efficiency is still not ideal, so this processing technology needs to be further improved

Method used

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  • Knurling and sharp corner rubbing integrated forming method
  • Knurling and sharp corner rubbing integrated forming method
  • Knurling and sharp corner rubbing integrated forming method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1 to Figure 5 As shown, the knurling and sharpening method of the present embodiment includes the following steps: 1. Place the pin blank body 40 formed by cold heading on the feed end of the forming plate 1;

[0027] 2. Roll the pin embryo body 40 forward to process the flower teeth 41 on the rod body of the pin embryo body 40;

[0028] 3. Continue to roll the pin blank body 40 forward, so that the pin part 401 processed with flower teeth 41 rolls along the cutting surface 112 of the forming plate 1, thereby processing a sharp corner 42 at the end of the pin part 401;

[0029] 4. Roll the forming pin 4 with the sharp angle 42 out of the forming plate 1 from the discharge end of the forming plate 1 to complete the processing of the flower teeth 41 and the sharp angle 42 on the pin.

[0030] On the surface of the cuttin...

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Abstract

The invention provides a knurling and sharp corner rubbing integrated forming method. The method comprises the following steps that a pin blank formed through cold heading is placed at the feeding end of a forming plate; the pin blank is rolled forwards, and pattern teeth are machined on a rod body of the pin blank; the pin blank is continuously rolled forwards, a pin piece with the pattern teeth machined rolls along the cutting face of the forming plate, and therefore sharp corners are machined at the end of the pin piece; and a forming pin with the sharp corners machined rolls out of the forming plate from the discharging end of the forming plate. The knurling and sharp corner rubbing integrated forming method has the beneficial effects that forming plate convex teeth capable of manufacturing the pattern teeth on the rod body of the pin are arranged on the forming plate, the cutting face capable of rubbing the end of the pin blank to form the sharp corners is arranged, and therefore knurling and sharp corner rubbing forming of the pin are achieved through thread rolling manufacturing of the same forming plate, the forming efficiency is high, the position relation between the pattern teeth and the sharp corners can be better controlled, the forming effect is good, and the yield is high.

Description

technical field [0001] The invention relates to the technical field of pin production, in particular to a knurling and sharpening forming method. Background technique [0002] For mass-produced pins with knurling and sharp corners (43°), the original forming process is to complete the processing of the pins through three steps of cold heading, car corners, and gear hobbing. [0003] There is an existing Chinese invention patent application with the application number CN201210069802.9 titled "A Pin for Signal Line Housing and Its Processing Technology", which discloses a pin for signal line housing and its processing technology. The pin for the signal line housing includes a pin body, the bottom of the pin body is provided with knurling, the top of the pin body is provided with threads, and the upper part of the pin body is provided with a clamping position formed by extrusion. The pin body is made of steel with a diameter of 2.3 mm. The diameter is 2.8mm. The pin and its p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21G3/00
CPCB21G3/00
Inventor 蒋杨英林志峰陈彦霖
Owner ZHOUSHAN 7412 FACTORY
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