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A programmable pulse wire feeding control system

A control system and wire feeding technology, which is applied in manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problems that are not suitable for scientific research needs, few controllable parameters, and low wire feeding accuracy, so as to achieve more flexible controllable parameters Variable, easy and reliable operation, high wire feeding accuracy

Active Publication Date: 2021-06-25
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned wire feeding control method still has the disadvantages of low wire feeding accuracy, few controllable parameters, and inflexible operation, which is not suitable for scientific research needs.

Method used

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  • A programmable pulse wire feeding control system
  • A programmable pulse wire feeding control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At the average wire feeding speed V = 100mm / s, T 1 = T 2 =50ms, pause time T 3 =0, for example, if it is desired that the wire retraction distance per cycle is 2mm, that is, V 2 *T 2 =2mm, it can be known by calculation that V 2 =40mm / s, V 1 =240mm / s.

[0033] The operator first transmits the characteristic parameters of the pulse wire feeding process to the processor. The characteristic parameters are: average wire feeding speed V=100mm / s, T 1 = T 2 =50ms, pause time T 3 =0,V 1 =240mm / s. V 2 =40mm / s, the processor sets the speed of the BLS AC servo motor and 120SN10-CQ printing DC motor through the motion control card ADT-8948 according to the above parameters; Take out the contact tip of the welding torch.

[0034] When the normal wire feeding process starts, according to the characteristic parameter value of the pulse wire feeding process, the wire pushing mechanism is driven by the 120SN10-CQ DC printing motor to independently rotate a certain distance ...

Embodiment 2

[0038] With the average wire feeding speed V=100mm / s, the changed wire feeding speed V 4 =200mm / s, the duration T of the changed state 4 =10ms as an example, if the control requirement is: when the arc voltage is detected to be higher than a certain value, it is determined that the wire feeding speed needs to be increased in real time during the constant speed wire feeding process, and the speed returns to the average speed after a period of time.

[0039] The operator first sends the characteristic parameters of the pulse wire feeding process to the computer through the computer. The characteristic parameters are: average wire feeding speed V=100mm / s, V 4 =200mm / s, the duration T of the changed state 4 =10ms, the computer sets the speed of the BLS AC servo motor and 120SN10-CQ printing DC motor through the motion control card ADT-8948 according to the above parameters; then install the wire reel to the wire pushing mechanism, and manually feed the wire so that the end of the...

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Abstract

The invention provides a programmable pulse wire feeding control system with simple and reliable operation, high wire feeding precision and flexible controllable parameters. The upper computer connection module of the motion control card is connected with the processor, and the bus module of the motion control card includes Two closed-loop control loops. The closed-loop control loop includes a wire-pushing control loop and a wire-drawing control loop. The output module of the wire-pushing control loop is connected to the wire-pushing motor driver, and the input module is connected to the wire-pushing speed feedback device; the output module of the wire-drawing control loop is connected to the The wire drawing motor driver is connected, the input module is connected with the wire drawing speed feedback device, and the outlet of the wire drawing mechanism is connected with the welding torch; there is an automatic control buffer mechanism between the wire pushing mechanism and the wire drawing mechanism, and the automatic control buffer mechanism includes two end buffer chambers and a middle buffer Cavities and end buffer cavities communicate through the middle buffer cavity, and the overall path length of the self-control buffer mechanism is greater than the straight-line conveying distance of the welding wire between the wire pushing mechanism and the wire drawing mechanism.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a programmable pulse wire feeding control system. Background technique [0002] Pulse wire feeding is a new type of wire feeding method. Pulse wire feeding can realize both non-short circuit welding and forced short circuit process of pulse wire feeding, and has the advantages of small spatter, beautiful weld shape, good welding quality, and suitable for all-position welding. In the process of forced short circuit through pulse wire feeding, the short circuit frequency is strictly equal to the frequency of pulse wire feeding, and the forward force generated by the pause after pulse wire feeding is used to promote the transfer of molten droplets and reduce the liquid metal on the side of the welding wire in the small bridge. , At the same time, the splash caused by the explosion of the small bridge is reduced. [0003] Invention patent 201710669905.1 "A control system and metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/133
CPCB23K9/124B23K9/133
Inventor 郭宁杜永鹏冯吉才徐昌盛付云龙陈昊
Owner HARBIN INST OF TECH AT WEIHAI
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