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Friction plug rivet welding system based on programmable logic controller (PLC)

A welding system and welding machinery technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., to achieve the effect of ensuring welding accuracy

Inactive Publication Date: 2020-05-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The welding system can solve the connection problem of ultra-high strength steel and aluminum alloy, and provides a set of control system according to the welding process requirements, which improves the welding accuracy

Method used

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  • Friction plug rivet welding system based on programmable logic controller (PLC)
  • Friction plug rivet welding system based on programmable logic controller (PLC)
  • Friction plug rivet welding system based on programmable logic controller (PLC)

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Embodiment Construction

[0016] Embodiments of the present invention are described in further detail below according to the accompanying drawings:

[0017] figure 1 , figure 2 It is a schematic diagram of the overall structure of the plug riveting welding mechanism. The plug riveting welding mechanism includes a rotating motor 1, a diaphragm coupling 2, a rotating shaft 3, a rivet head 4, a spoke pressure sensor 5, a grating ruler 6, a linear guide 7, and a ball Lead screw 8, upper limit switch 9, lower limit switch 10, frame 11, synchronous pulley 12, planetary reducer 13, stroke motor 14. The rotating motor 1 is fixed on the frame 11, and the rotating shaft 3 is connected with the rotating motor 1 through the diaphragm coupling 2 to realize the rotating movement of the equipment. The stroke motor 14 is connected with the planetary reducer 13, and drives the rotation of the ball screw 8 through the synchronous pulley 12, so as to realize the axial movement of the equipment. The rivet head 4 is lo...

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Abstract

The invention discloses a friction plug rivet welding system based on a programmable logic controller (PLC), and relates to the field of welding equipment. The welding system comprises four modules including a plug rivet welding mechanical device, a servo drive system, a main control system and a man-machine interaction interface. The plug rivet welding mechanical device has two degrees of freedomof rotation and axial direction, and the axial degree of freedom provides downward pressure during welding. The main control system continuously collects displacement and pressure values during welding so as to ensure that the welding process is controlled in real time. The friction plug rivet welding system utilizes high-speed rotation and certain pressure of a special rivet to penetrate throughan upper plate, stops pressing downwards after the rivet penetrates through the upper plate, continuously rotates to generate heat and melts a base plate, and then completes welding of the rivet andthe base plate under the action of pressure. The welding system not only achieves connection of ultra-high strength steel and an aluminum alloy, but also performs double closed-loop control on the axial displacement during welding, and ensures the welding precision.

Description

technical field [0001] The invention relates to the field of welding equipment, in particular to a PLC-based friction plug riveting welding system. Background technique [0002] With the development of the manufacturing industry, the competition faced by various industries is becoming more and more fierce. Especially in the automobile manufacturing industry, energy conservation and emission reduction has become a common goal. Body lightweight is an important way to save energy, reduce emissions and fuel economy, and has been valued by the automobile manufacturing industry. Considering economy, practicability and weight reduction effect comprehensively, it becomes an important means to achieve weight reduction by using multiple materials to mix the body. Among them, the development of steel-aluminum hybrid body has matured. As we all know, resistance spot welding has become a common welding method in the automotive industry due to its advantages of high production efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/122B23K20/26B23K2103/18B21J15/027
Inventor 陈树君许少阳陈树海刘明宇
Owner BEIJING UNIV OF TECH
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