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Process for forming external welding leg square nut by multiple work position cold headers from coiled round wire

A multi-station, cold heading machine technology, applied in the field of metal forging processing, can solve the problems of low product precision, increased handling time, unstable quality, etc.

Active Publication Date: 2006-08-23
厦门恒耀金属有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The utilization rate of materials is extremely low: by Figure 1A It can explain the material utilization of this traditional craft;
[0005] (2) The thickness of the machinable nut is limited;
[0006] (3) When the outer solder leg is formed, it can only be done manually and cannot realize automatic production
[0008] (1) Low material utilization rate: manual feeding of bar steel (bar) has a large error in cutting length; cutting blanks according to equal weight requires frequent weighing, wasting man-hours, and low cutting efficiency; bar steel (bar) When cutting the blank, there is surplus material at the head and tail. When cutting in large quantities, a large amount of waste will be generated; if the punching process is placed before the forging process, the punching waste will thicken, and the accumulated waste will be large in mass production;
[0009] (2) Each process cannot be automatically connected, there are many and scattered processes, and it is easy to mix materials between processes; each process needs to be operated by a special person, and material stagnation is easy to occur between processes, and a large amount of handling time is increased, and production efficiency is low. Processing high cost;
[0010] (3) The product has low precision and unstable quality;
[0011] (4) The labor intensity is high and the safety cannot be guaranteed

Method used

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  • Process for forming external welding leg square nut by multiple work position cold headers from coiled round wire
  • Process for forming external welding leg square nut by multiple work position cold headers from coiled round wire
  • Process for forming external welding leg square nut by multiple work position cold headers from coiled round wire

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Embodiment Construction

[0026] Please refer to figure 2 , when the coiled wire used in the present invention is cut, shaped, pre-formed, outer solder leg formed, and punched, there are operations such as automatic feeding and automatic pinching. Before explaining the manufacturing process of the present invention, the automatic feeding, automatic The operation of the pinch device and so on will be explained.

[0027] A. Automatic feeding:

[0028] The automatic feeding device of cold heading machine mainly includes: cam, feeding rocker, ratchet, pawl and feeding wheel and other components. The cam drives the feed rocker to make the ratchet actuate the ratchet to rotate an angle θ. When the ratchet rotates θ, the feeding wheel will synchronously rotate the angle θ to feed the material, and the feeding wheel will be divided into 2π / θ equal parts to feed the material. The effective working diameter of the wheel is D, and the feeding length each time is πD÷(2π / θ)=Dθ / 2.

[0029] Assuming that the volu...

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PUM

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Abstract

The process of forming square wingnut with coil rod in a multiple work site cold header includes the following steps: 1. cutting material the automatic feeder feeds; 2. forging to flat the shorn surface of the material; 3. setting practical work site number and pre-forging the hole and contour; 4. forming the welded wings; and 5. punching the hole to the required size. The technological process has high production efficiency, high material utilization rate, low labor strength, high product strength, hardness, precision and outer quality, low cost, and other advantages.

Description

technical field [0001] The invention belongs to the field of metal forging and processing, and relates to a process for forming square nuts with outer welding feet (bumps) by a multi-station cold heading machine with a disk element wire. Background technique [0002] Such products as square nuts with outer solder feet (bumps) are hardware parts and are widely used in aviation, automobiles, tractors and other industries. The demand is huge, and mass production is required to meet them. [0003] Traditional craft (1): such as figure 1 shown, the application punch will Figure 1A The sheet shown is punched, punched, blanked, and the outer welding leg is formed. Figure 1B For the square nut with outer welding feet (bumps) shown, this process has the following defects: [0004] (1) The utilization rate of materials is extremely low: by Figure 1A It can explain the material utilization of this traditional craft; [0005] (2) The thickness of the machinable nut is limited; ...

Claims

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Application Information

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IPC IPC(8): B21K1/70B21J5/02
Inventor 吴荣彬苏标庚
Owner 厦门恒耀金属有限公司
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