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Method and system for self-locking and fixedly connecting thin plate

A connection method and connection system technology, which is applied in the field of thin plate self-locking fastening connection and system, can solve the problem of light weight thin plate connection, optimize fastening connection and other problems, and achieve improved process safety, stable riveting quality, and simple processing procedures Effect

Active Publication Date: 2015-03-11
MEISHAN CRRC FASTENING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the self-locking fastening connection method and system for thin plates proposed by the present invention is to solve the above-mentioned connection problems between light-weight thin plates that cannot be spot welded and to optimize the fastening connection problem

Method used

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  • Method and system for self-locking and fixedly connecting thin plate
  • Method and system for self-locking and fixedly connecting thin plate
  • Method and system for self-locking and fixedly connecting thin plate

Examples

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Embodiment Construction

[0023] The thin plate self-locking fastening connection method in this embodiment includes the following steps:

[0024] The first step: make the following sheet self-locking fastening connection system:

[0025] See figure 2 , a self-locking rivet 3 consisting of a head 3.1 and a shank 3.2 is set, the shank is a cylinder with a polished surface on the outside, the front end of the inner hole of the cylinder is a pointed ring 3.3, and the head 3.1 is a countersunk head. See image 3 , the head 3.1a is a flat head.

[0026] See figure 1 , When connecting, set the cylindrical blank holder 4 outside the self-locking rivet 3; and set the die 1 placed under the connected thin plate 2, and there is a ring groove 1.1 above the die. It is provided that a hammer 5 is applied to the self-locking rivet and driven by a self-locking riveting tool 6, and a blank holder 4 is set on the outer circle of the hammer, and there is a transitional fit between the two.

[0027] See figure 1 ,...

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Abstract

The invention relates to a method and a system for self-locking and fixedly connecting a thin plate. The connecting system is provided with a self-locking rivet with a cylinder rod part with a pointed circular ring at the lower end of the cylinder rod part, a blank holder outside the rivet, the thin plate to be connected, and a female die with an annular groove in the lower part of the female die; the thin plate to be connected has two to three layers, and the elongation rate of the lowest layer is more than or equal to 12 percent; the thickness and the strength from the lowest layer to the top layer are gradually reduced; and the thickness of the lowest layer is more than 1 / 3 of the tot l thickness. When a self-locking riveting tool is used, a drive punch hammer and the blank holder pre-press the thin plate, and the self-locking rivet stabs the thin plate after pressurization, so that the lower part of the thin plate is subject to plastic deformation towards the inner part of the annular groove; and a mechanical self-locking structure is formed after expansion. According to the method and the system for self-locking and fixedly connecting the thin plate, a problem that the thin plate cannot be subject to spot welding can be solved; punching and riveting can be achieved at one time, the efficiency is high, and a time cycle for connecting one rivet is three seconds; products can be manufactured without smoke, gas, spark, dust, scraps and noise, and requirements on connection, automatic mass production and environmental protection of automobile light materials; and the connecting method and the system can be used for the fixed connection of thin aluminum plates, metal and non-metal, painted or cladded ferrous metal and the like.

Description

[0001] (1) Technical field: The thin plate self-locking fastening connection method and system of the present invention are mainly used for the fastening connection between ferrous metals, non-metals, painted, plated, and poor weldability thin plates on automobiles. It belongs to riveting (B21J) and fasteners (F16B) of metal machining. (two) background technology: [0002] When the existing automobile body is made of steel plates, the main method of connecting the plates is still spot welding (resistance welding), which is not only conducive to mass production, but also has a firm and reliable connection quality. [0003] With the development of the automobile industry, the requirements for the lightweight of automobiles are getting higher and higher. Automobile manufacturers pay more attention to the lightweight of the body and the high quality of material connections. One of the main ways to reduce the weight of the body is to use lightweight materials. For example, light-we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J15/10B29C65/60F16B19/08
CPCF16B19/08B21J15/10B29C65/602B21J15/025
Inventor 贾云龙刘宇刘洋代广成赵祥云熊光连何旭
Owner MEISHAN CRRC FASTENING SYST CO LTD
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