Cold heading manufacturing method for connection bolt of ignition switch and die

A technology for connecting bolts and manufacturing methods, which is applied in the direction of manufacturing tools, bolts, connecting components, etc., can solve problems such as inconvenience, and achieve the effects of slow wear, easy product dimensional accuracy, and high fatigue strength.

Active Publication Date: 2014-10-29
EXCELLENT FASTENING SYST SHANGHAI
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  • Abstract
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Problems solved by technology

[0004] In summary, the existing technology obviously has inconvenience and defects in actual use, so it is necessary to improve

Method used

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  • Cold heading manufacturing method for connection bolt of ignition switch and die
  • Cold heading manufacturing method for connection bolt of ignition switch and die
  • Cold heading manufacturing method for connection bolt of ignition switch and die

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Embodiment Construction

[0079] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0080] Combining diagram 1 to Figure 10 , The invention discloses a cold heading manufacturing method for a connecting bolt of an automobile ignition switch. The head of the connecting bolt is cold heading processed into a circular arc structure, so as to improve the fatigue resistance and stability of the connecting bolt.

[0081] to get Figure 5 Shown connecting bolt 100, a kind of method for manufacturing the connecting bolt cold heading of automobile ignition switch provided by the present invention, such as figure 1 The process shown, the implementation steps include:

[0082] Step S101, ...

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Abstract

The invention relates to the technical field of machining, and provides a cold heading manufacturing method for a connection bolt of an ignition switch. The method includes the steps that according to the wire diameter and the name needed during machining of the connection bolt, a material of a predetermined length is cut; cold heading is carried out on a semi-product of the connection bolt so that a head portion and a pole portion can be formed, and an arc face, a notch and a bottom end face of the head portion can be formed; the pole portion of the semi-product of the connection bolt is squeezed and threaded so that threads can be formed, and a finished product of the connection bolt is obtained. The invention further provides a connection bolt cold heading die based on the cold heading manufacturing method. Product quality problems are solved and production cost is reduced.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a cold heading manufacturing method and mold for connecting bolts of an ignition switch. Background technique [0002] With the development of science and technology, the relationship between automobiles and people's work and life is becoming increasingly close, and the work of automobile engines is inseparable from efficient, stable and reliable connecting bolts. In order for the bolts to work stably and reliably in a large number of complex production stress environments, the bolts must not fall off during the process. [0003] Due to the special material of connecting bolts, complex product structure, high precision requirements, and harsh use environment, the current manufacturing process mainly relies on machining centers (turning) to ensure product quality. The equipment of machining centers is expensive, imported equipment is about RMB 1 million, and processing efficie...

Claims

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Application Information

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IPC IPC(8): B21K1/46B21K1/54B21J5/02B21J13/02B21J5/08B21H3/06
Inventor 陈兴万宋小兵
Owner EXCELLENT FASTENING SYST SHANGHAI
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