Resistance spot welding displacement control method and device
A displacement control, resistance spot welding technology, applied in the field of measurement and control, can solve the problems of poor welding quality and uncontrollable
Active Publication Date: 2017-12-26
广州市精源电子设备有限公司 +1
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, with the development of miniaturization of devices, the size of components is getting smaller and smaller, and the welding of small margins is becoming more and more prominent. The traditional method of improving the quality of resistance spot welding cannot control the welding of small margins. , leading to poor welding quality
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] refer to figure 1 , In one embodiment, a displacement control method for resistance spot welding is provided, including the following steps.
[0029] S110: Control the spot welder to perform constant current welding on the welding object within a preset period after welding is started, and obtain characteristic parameter values of the spot welder within the preset period.
[0030] In the process of resistance spot welding of welding objects by spot welding machines, various parameters usually need to be considered, such as: welding current, electrode voltage, electrode displacement and electrode pressure, etc. Controlling the constant current at the initial stage of welding through step S110 can ensure that other parameters can be analyzed under the condition that the welding current remains unchanged.
[0031] Wherein, the preset time period may be specifically set according to actual operating experience. For example, in this embodiment, the preset time period may...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a resistance spot welding displacement control method and device. The method comprises the following steps: controlling a spot welding machine to perform constant-current welding on a welding object within a preset time period after welding is started to obtain characteristic parameter values of the spot welding machine within the preset time period; detecting whether small edge distance welding exists according to the characteristic parameter values within the preset time period and preset characteristic parameter values; if the small edge distance welding exists, acquiring an edge distance value of the small edge distance welding according to the characteristic parameter values within the preset time period and a preset edge distance function model, and acquiring a displacement curve, which serves as a reference displacement curve, corresponding to the edge distance value according to the edge distance value and a preset displacement curve function model; if the small edge distance welding does not exist, setting a preset displacement curve as the reference displacement curve; and obtaining a real-time displacement of an electrode of the spot welding machine after the preset time period, and controlling the displacement of the electrode according to the real-time displacement and the reference displacement curve, so that the electrode can move according to the reference displacement curve. The resistance spot welding displacement control method can control the displacement according to the small edge distance welding condition, and the welding quality is improved.
Description
technical field [0001] The invention relates to the technical field of measurement and control, in particular to a displacement control method and device for resistance spot welding. Background technique [0002] Resistance spot welding is a method in which pressure is applied through the electrodes of a spot welding machine after the workpieces are assembled, and a method of welding is carried out by using electric current to pass through the contact surface of the joint and the resistance heat generated in the adjacent area. There are many factors that affect the quality of resistance spot welding, and the typical ones are shunting, electrode wear, surface contamination, warping of weldments, and small margin welding. [0003] Small margin welding refers to the situation where the distance between the welding point and the edge of the workpiece to be welded is relatively close. When the edge distance is small, due to the reduction of the restraint of the surrounding metal...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/11
CPCB23K11/11
Inventor 杨凯曹彪李海波黄增好
Owner 广州市精源电子设备有限公司