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Device and method for clinching martensitic steel plate

A rivetless riveting and martensitic technology, which is applied in metal processing, metal processing equipment, forming tools, etc., can solve the problems of abnormal formation of riveted joints, unsatisfactory plastic flow quality, high process conditions, etc., to achieve riveting Efficient and quick bonding process, small deformation, and precise temperature control

Active Publication Date: 2020-06-12
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

First of all, in the construction process of rivetless riveting, it has high requirements for the actual working process conditions, and it is not easy to realize the connection work of metal plates with poor plasticity. Certain requirements, the riveted joint cannot be formed normally if the thickness is too thick or too thin
[0007] In spot welding technology, the strength of the riveted joint itself of rivetless riveting technology is lower than that of spot welding, so its plasticity is better in parts with higher bearing capacity requirements of automobiles and on materials with higher hardness and heat hardening treatment. Flow quality is not ideal

Method used

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  • Device and method for clinching martensitic steel plate
  • Device and method for clinching martensitic steel plate
  • Device and method for clinching martensitic steel plate

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Embodiment Construction

[0040] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0041]It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0042] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, it only means t...

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Abstract

The invention belongs to the technical field of clinching, and particularly relates to a device and a method for clinching a martensitic steel plate. The device comprises an upper die, a lower die, apunch, a holding head, an upper laser heater, a lower laser heater, thermistors, and cooling water channels, wherein through holes are formed in the centers of the upper die and the lower die; the upper die and the lower die are symmetrically arranged up and down; the punch is located in the through hole of the upper die; the holding head is located in the through hole of the lower die; both the punch and the holding head can move freely in the respective through holes; the upper laser heater is arranged in the bottom surface of the punch; the lower laser heater is arranged in the top surfaceof the holding head; and the upper die and the lower die is provided with thermistors and cooling water channels; and cooling water channels are arranged at a position, close to the upper laser heater, in the punch and a position, close to the lower laser heater, in the holding head. Rivets formed by the device are interlocked with a bottom material to ensure high connection strength.

Description

technical field [0001] The invention belongs to the technical field of rivetless riveting, and in particular relates to a device and method for riveting martensitic steel plates without rivets. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] With the depletion of energy, environmental protection, and the continuous improvement of global environmental protection legislation, the research on automobile lightweight and high-strength steel has become an important topic. The automobile body accounts for a quarter of the total weight of the automobile. Therefore, Reducing the weight of the body while maintaining strength is very important for fuel consumption and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/02B21D37/10B21D37/16B21C51/00
CPCB21D39/02B21D37/10B21D37/16B21C51/00
Inventor 景财年叶道珉李亮丁啸云吴聪雷启腾侯玉栋张志浩刘磊赵顺治
Owner SHANDONG JIANZHU UNIV
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