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Flat-bottom rivet-free flat-bottomed cross-twist lock connection device and method

A connecting device and rivetless technology, which is applied in the field of plate connection, can solve the problems of low impact resistance and low tensile strength, and achieve the effects of fast response, flow promotion and strong controllability

Active Publication Date: 2021-06-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the connection point formed by the existing flat-bottom riveted connection has the disadvantages of low tensile strength, too small "mechanical lock" of the connection point, and low impact resistance.

Method used

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  • Flat-bottom rivet-free flat-bottomed cross-twist lock connection device and method
  • Flat-bottom rivet-free flat-bottomed cross-twist lock connection device and method
  • Flat-bottom rivet-free flat-bottomed cross-twist lock connection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, the embodiment of the present invention provides a flat-bottomed rivet-free press type cross-twist lock connection device, including: a support frame, an electromagnetic drive device, an electromagnetic moving plate 1, a guide plate 12, a stamping implementation mechanism, and a cylindrical block 2 and the outer expansion sheet 3; the support frame includes a top support plate 4, a guide plate 5 and a bottom support plate 6, the center of the guide plate 5 is provided with a through hole, and the top support plate 4 and the guide plate 5 pass through Two symmetrically arranged connecting pairs 7 are fixedly connected, the guide plate 5 and the bottom support plate 6 are fixedly connected by two symmetrically arranged hollow cylinders 8, and the electromagnetic moving plate 1 is arranged on the top support plate 4 Between and the guide plate 5, the bottom of the electromagnetic moving plate 1 is provided with the stamping implementation mechani...

Embodiment 2

[0067] Such as Figure 8 As shown, the embodiment of the present invention also provides a flat-bottomed rivet-free flat-bottomed cross-twist lock connection method, including:

[0068] Step 1: Place the upper plate 17a and the lower plate 17b on the cylindrical block 2, and connect the outer expansion piece 3 with the stamping head 13;

[0069] Step 2: Connect the driving copper wire 9 and the passive copper wire 10 to the power supply, so that the driving copper wire 9 and the passive copper wire 10 generate mutually repulsive force, thereby pushing the electromagnetic moving plate 1 to move downward, and the electromagnetic moving plate 1 compresses and buffers back Elastic rubber block 11, and buffer rebound rubber block 11 can play buffer protection effect to the motion of electromagnetic mobile plate 1; The guide connecting rod 1a on the electromagnetic mobile plate 1 will follow the track of guide slider 12b in guide seat 12a Perform movement so that it will rotate at ...

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PUM

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Abstract

The invention provides a flat-bottomed rivet-free tablet-type cross-twist lock connection device, comprising: a support frame, an electromagnetic drive device, an electromagnetic moving plate, a guide plate, a stamping implementing mechanism, a cylindrical block and an outer expansion sheet, the cylindrical block For placing plates, the support frame includes a top support plate, a guide plate and a bottom support plate, the electromagnetic moving plate is arranged between the top support plate and the guide plate; the punching implementation mechanism is arranged on the electromagnetic moving Below the plate, the electromagnetic driving device drives the electromagnetic moving plate to drive the stamping implementing mechanism to rotate and press down, and spin the outer expansion piece into the plate to assist in completing the plate connection; the invention also provides a flat bottom without rivets The sheet-pressing cross-twist lock connection method, the invention can complete the sheet material spinning connection through electromagnetic drive, the connection accuracy and mechanical strength are high, and the connection uses the external expansion sheet as an auxiliary material, which effectively improves the impact resistance of the sheet material connection point.

Description

technical field [0001] The invention relates to the technical field of plate connection, in particular to a flat-bottomed rivet-free cross-twist lock connection device and method. Background technique [0002] With the development of the concept of "body in white" for automobiles, lightweight panels such as aluminum alloys, magnesium alloys, and titanium alloys have been widely used. These alloys are characterized by light weight and high strength, and are widely used in the automotive industry, aerospace industry and medical industry. In recent years, the connection of these materials has become a research hotspot. Among them, the connection technology that has special requirements for the surface of the connection point is also constantly developing. At present, the connection methods that can realize the connection of plates and meet the special requirements of the connection surface mainly include: resistance spot welding, glue bonding and flat-bottom riveted connectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D39/03
CPCB21D39/031
Inventor 陈超彭浩黄明辉冉向坤赵升吨
Owner CENT SOUTH UNIV