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A laser-driven hydraulic bulging plate riveting method and structure

A hydraulic bulging and laser-driven technology, which is applied in laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of production efficiency and reliability, complex mechanism, complex special device, small lateral deformation, etc., to achieve Large production flexibility, high production reliability, and the effect of reducing the possibility of damage

Active Publication Date: 2017-12-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This method solves the problem of small lateral deformation in the existing method, and can form a large amount of interlocking embedding, thereby improving the connection strength of the plates, but the special device is very complicated, and the production efficiency and reliability are limited by the complex mechanism and its complex motion. limit

Method used

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  • A laser-driven hydraulic bulging plate riveting method and structure
  • A laser-driven hydraulic bulging plate riveting method and structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: A laser-driven hydraulic bulging plate riveting method mainly includes the following steps:

[0045] (a) placing the lower sheet material 5 and the middle layer sheet material 4 with a bulge on the forming mold 6 in sequence, and the center of the bulge structure of the middle layer sheet material 4 is aligned with the center of the riveted position of the lower layer sheet material 5;

[0046] (b) Inject transparent liquid 1 to fill the bulging structure of the middle layer plate 4;

[0047] (c) Place the upper plate 3 above the middle plate 4, and then use the pressing device 2 to compress each layer of plate;

[0048] (d) In order to enhance the laser impact effect, inject transparent liquid 1 on the upper part of the upper plate 3, the depth is not greater than 5mm;

[0049] (d) if figure 1 As shown, the surface of the upper plate 3 is irradiated with a pulsed laser, and explosive plasma is formed on the surface of the upper plate 3. The explosive pl...

Embodiment 2

[0056] Embodiment 2: A laser-driven hydraulic bulging plate riveting method mainly includes the following steps:

[0057] (a) placing multiple layers of bulging middle-layer sheets 4 on top of the split-type lower-layer sheet 5 in sequence, and aligning the center of the bulging structure of the middle-layer sheet 4 with the geometric center of the through hole of the lower-layer sheet 5;

[0058] (b) Inject transparent liquid 1 to fill the bulging structure of the middle layer plate 4;

[0059] (c) Place the upper plate 3 above the middle plate 4, and then use the pressing device 2 to compress each layer of plate;

[0060] (d) In order to enhance the laser impact effect, inject transparent liquid 1 on the upper part of the upper plate 3, the depth is not greater than 5mm;

[0061] (d) Using pulsed laser to irradiate the surface of the upper plate 3, forming explosive plasma on the surface of the upper plate 3, the explosive plasma impacts the surface of the upper plate 3, th...

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Abstract

A laser-driven hydraulic expansion sheet riveting method and structure. The method primarily comprises: A. providing a lower layer sheet material (5) with a through hole on top of a forming mold (6) with a groove; B. placing a mid-layer sheet material (4) with a bulge on top of the lower layer sheet material (5), wherein the bulge is positioned within the through hole; C. injecting a fluid material (1) in the bulge (1) and placing an upper layer sheet material (3) on top of the mid-layer sheet material (4); D. pressing the upper layer sheet material tightly using a pressing device (2); E. blasting the upper layer sheet material (3) with a laser to generate a downward deformation of the upper layer sheet material (3), transmitting a force of impact to the bulge via the fluid (1) within the bulge, generating a horizontal and vertical deformation of the bulge towards the bottom of the through hole, thereby riveting the mid-layer sheet material (4) to the lower layer sheet material (5). A structure for realizing the method comprises: a forming mold (6), a lower layer sheet material (5) with a through hole, a mid-layer sheet material (4) with a bulge, an upper layer sheet material (3) with a flat surface structure, and a clamping device (2) provided from bottom to top in that order. The method and structure use a fluid to convert a unidirectional laser impact force into a multi-directional force, thereby achieving high-strength riveting of different sheet materials.

Description

technical field [0001] The invention relates to the field of advanced laser manufacturing, in particular to a laser-driven hydraulic bulging plate riveting method and structure, which are used to realize rivetless riveting between plates. Background technique [0002] Plate riveting, especially rivetless riveting technology, has been more and more widely used in automobile and aircraft industries, and various advanced riveting technologies have developed rapidly. [0003] In the prior art, there have been some studies on rivetless riveting technology. For example, the Chinese patent document with the application number 200810014018.1 proposes a pulse laser micro-riveting method and special device for ultra-thin plates. This method uses the explosive plasma induced by the pulsed laser beam to impact the plate into a riveting buckle with a small mouth and a large bottom. shape, so that the upper and lower plates are riveted together. Compared with the traditional riveting me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/122B23K26/20B21J15/00B23K101/16
CPCB21J15/00B23K26/1224B23K26/20B23K2101/16
Inventor 季忠王建峰梁萌郑超刘韧
Owner SHANDONG UNIV
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