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Laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device and connecting method

A technology of laser cladding and ultrasonic vibration, which is applied in the coating process and coating of metal materials, can solve problems affecting joint performance, electrochemical corrosion, metal fatigue, etc., to eliminate residual stress, improve surface strength, and reduce quality Effect

Pending Publication Date: 2019-07-12
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, during riveting, metals with poor plasticity are prone to metal fatigue at the riveted joint, and cracks or even fractures may occur in severe cases, affecting the performance of the joint
At the riveted joints of dissimilar metal materials, electrochemical corrosion may also occur due to the influence of high air humidity.

Method used

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  • Laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device and connecting method
  • Laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device and connecting method
  • Laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device and connecting method

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Embodiment Construction

[0072] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0073] Such as figure 1 As shown, the laser cladding and ultrasonic vibration combined auxiliary rivetless turning riveting connection device provided by the present invention includes: base 110, downturning riveting punch 120, ultrasonic vibration device 130, blank holder 140, upturning riveting punch 150 , the first laser cladding device 160 and the second laser cladding device 170 .

[0074] Such as figure 2 As shown, the center of the base 110 has a stepped first through hole 111, the downturning riveting punch 120 is supported in the first through hole 111 by the elastic device 112, the ultrasonic vibration device 130 is connected to the bottom of the downturning riveting punch 120, and It can drive the riveting punch 120 to hit the top of the base 110;

[0075] Such...

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Abstract

The invention discloses a laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device. The laser cladding and ultrasonic vibration combined auxiliary rivet-free turning and riveting connecting device comprises a base, a lower turning and riveting punch, an ultrasonic vibration device, an edge pressing ring and an upper turning and riveting punch, wherein the base is provided with a first through hole; the lower turning and riveting punch is elastically supported in the first through hole; the ultrasonic vibration device is connected with the bottom of the lower turning riveting punch and can drive the lower turning riveting punch to impact towards the top; the inner part of the edge pressing ring is provided with a second through hole; and the upper turning and riveting punch is movably arranged in the second through hole and can slide up and down along the second through hole. The laser cladding device is adopted to form a cladding interlayer between the riveting metal, the generation of electrochemical corrosion is avoided, then the ultrasonic vibration device is combined to drive the punch to realize turnover riveting, residual stress generated in the riveting process is reduced, and the surface strength of a riveting joint is effectively improved. The invention further provides a laser cladding and ultrasonic vibration combined auxiliary rivet-free flanging and riveting connecting method.

Description

technical field [0001] The invention relates to the technical field of rivetless riveting of dissimilar metals, in particular to a device for assisting rivetless turning connection by combining laser cladding and ultrasonic vibration, and a method for assisting rivetless turning connection by combining laser cladding and ultrasonic vibration. Background technique [0002] With the development of the automobile industry, the requirements for the lightweight of automobiles have become increasingly prominent. In addition to replacing traditional steel with lightweight and high-strength materials, processing and joining technologies are also constantly being updated. Rivetless riveting adopts stamping equipment and special standard connection molds, and uses the plastic deformation of the material itself to form a dot inlaid with each other at the joint through a stamping process, thereby connecting the plates. Compared with traditional processing methods, such as welding and g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/02B21D35/00C23C24/10
CPCB21D39/026B21D35/008C23C24/103
Inventor 庄蔚敏陈沈石佳宁吕令令施宏达
Owner JILIN UNIV
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