Ultrasonic-assisted impressing connecting device and method

An ultrasonic-assisted, connecting device technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of hard-to-deform materials, easy to generate cracks, difficult deformation, etc., to reduce the probability of gaps, reduce down Compressive resistance, the effect of improving mechanical properties

Active Publication Date: 2018-02-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the present invention provides an ultrasonic-assisted embossing connection device and method, which are used to solve the problems of cracking, deformation difficulty and non-metallurgical Combining problems, and solving the problems of strong beam reflection and plasma shielding effect in laser welding, which are prone to cracks, pores, joint softening and other defects, the present invention is based on the embossing connection technology, and applies power ultrasonic , so as to achieve the effect of reducing the stamping resistance of the punch, softening difficult-to-deform materials, and forming a mechanical-metallurgical composite connection

Method used

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  • Ultrasonic-assisted impressing connecting device and method

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Embodiment 1

[0030] Embodiment 1: as Figure 1-4 As shown, an ultrasonic-assisted embossing connection device includes a punch 1, a lower riveting die 4, a curved frame 5, a retractable rod 6, and an ultrasonic generator 12; the upper end of the punch 1 is connected to an external imprinting system , one end of the curved frame 5 is welded to the side wall of the punch 1, and the other end is welded to the end of the telescopic rod 6; the top of the telescopic rod 6 is welded with two ribs 13; the ultrasonic generator 12 is installed on the telescopic rod 6 On the two ribs 13 of the top.

[0031] Further, the two ribs 13 are provided with threaded through holes corresponding to each other, and one end of the ultrasonic generating device 12 is hinged to the set screw 14 at the grooved concave end. By adjusting the angle of the ultrasonic generating device 12 and the telescopic rod 6 The length of the punch 1 can make the angle B between the side wall of the punch 1 and the ultrasonic gener...

Embodiment 2

[0045] Embodiment 2: as Figure 1-4 As shown, an ultrasonic-assisted embossing connection device and method, this embodiment is the same as Embodiment 1, wherein:

[0046] Further, the ultrasonic power of the ultrasonic generating device 12 is 1 kW, and the amplitude is 1 μm.

[0047] Further, the radii of the arc side C10 and the arc side D11 are both 2mm.

[0048] Further, the horizontal length of the straight edge 9 is 0.55 of the horizontal length of the bottom of the lower riveting die 4 .

[0049] Further, the radius of the arc edge B8 is 0.35 of that of the straight edge 9 .

[0050] In the step Step2, set the angle B between the ultrasonic generating device 12 and the punch 1 to be 0°;

[0051] In Step 4, the punch 1 moves downward to punch the sheet material, causing plastic deformation of the upper and lower plates, until the concave die of the lower riveting die 4 is fully filled, and the ultrasonic vibration is maintained for 2 seconds.

Embodiment 3

[0052] Embodiment 3: as Figure 1-4 As shown, an ultrasonic-assisted embossing connection device and method, this embodiment is the same as Embodiment 1, wherein:

[0053] Further, the ultrasonic power of the ultrasonic generating device 12 is 100 kW, and the amplitude is 70 μm.

[0054] Further, the radii of the arc side C10 and the arc side D11 are both 3 mm.

[0055] Further, the horizontal length of the straight edge 9 is 0.7 of the horizontal length of the bottom of the lower riveting die 4 .

[0056] Further, the radius of the arc edge B8 is 0.4 of that of the straight edge 9 .

[0057] In the step Step2, set the angle B between the ultrasonic generating device 12 and the punch 1 to be 180°;

[0058] In Step 4, the punch 1 moves downward to punch the sheet material, causing plastic deformation of the upper and lower plates, until the concave die of the lower riveting die 4 is fully filled, and the ultrasonic vibration is maintained for 6 seconds.

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Abstract

The invention relates to an ultrasonic-assisted impressing connecting device and method and belongs to the technical field of impressing connecting. The ultrasonic-assisted impressing connecting device comprises a punch pin, a lower riveting die, a curved frame, a telescopic rod and an ultrasonic generator. The upper end of the punch pin is connected with an external impressing system. One end ofthe curved frame is welded to the sidewall of the punch pin, and the other end of the curved frame is welded to the tail end of the telescopic rod. Two ribbed plates are welded to the top end of the telescopic rod. The two ribbed plates are both provided with corresponding threaded through holes. The ultrasonic generator is mounted at the top end of the telescopic rod. By adopting the ultrasonic-assisted impressing connecting device, the problems that a difficult-to-deform material cracks, is difficult to deform, has gaps and poor in metallurgical bonding during impressing connecting are solved; the problems that light beam reflection and plasma shielding effects during aluminum laser welding through an aluminum alloy welding method, and the defects of cracks, pores welding joints softenedand the like occur easily are solved; the hold-down resistance borne by the punch pin is reduced by applying ultrasonic vibration. Mechanical-metallurgical combined connection is realized. The mechanical properties of joints are improved.

Description

technical field [0001] The invention relates to an ultrasonic-assisted embossing connection device and method, and belongs to the technical field of embossing connection. Background technique [0002] With the continuous development of lightweight technology, light materials such as aluminum alloys are more and more widely used in the automotive industry. At present, the technologies for connecting light materials such as aluminum alloys mainly include laser welding, self-piercing riveting, embossing and other technologies. . Traditional self-piercing riveting and embossing connection belong to mechanical cold forming technology, which can realize the effective connection of the same or different multi-layer plates. However, when they connect materials with poor plasticity and high strength such as magnesium alloy and high-strength steel, there are problems. There are serious problems such as sheet cracking and deformation difficulties; in addition, only a single mechanical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/03B23K20/10
CPCB21D39/031B23K20/10
Inventor 何晓聪丁文有
Owner KUNMING UNIV OF SCI & TECH
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