Anti-Drift Welding Rotator

Electronic Anti-Drift Welding Rotator

Electromechanical Anti-Drift Welding Rotator

Laser Guided Automatic Anti-Drift Welding Rotator

Detection and Control of Welding Rotator Anti-creep Device and Axial Drift

During the welding process of large weldments, axial drift greatly affects the welding quality, so for welding rotator, preventing welding drift has become a very important performance, so now most welding rotators use anti-creep device to prevent welding axial drift, Bota  here introduces several common welding rotator anti-creep devices for your reference.

Welding Rotator Anti-creep Device

1. Jack-up actuator

The rollers on one side of the driven roller frame can move up and down, so that the axis of the weldment is offset, and at the same time, the axial component of the weldment's own weight is changed. The advantage of this adjustment method is that the adjustment sensitivity is high, and the disadvantage is that the manufacturing cost is high and the volume is large.

2. Offset actuator

The rollers on both sides of the driven roller frame can be offset in the same direction along its vertical centerline, so as to change the axial friction component between the rollers and the weldment. The advantage of this adjustment method is high sensitivity, but the disadvantage is that it wears too much on the roller.

3. Translation actuator

The rollers on both sides of the driven roller frame can move horizontally perpendicular to the axis of the weldment at the same time, so as to achieve the purpose of adjusting the axis of the weldment and the angle between the axes of the rollers. This adjustment method has the advantages of good stability, low manufacturing cost, simple structure, and does not occupy additional installation space.

Detection and control of weldment Axial Drift

The purpose of the detection of weldment axial drift is to detect the drift displacement of the weldment in the axial direction of the welding rotator, so as to reduce or avoid the drift through appropriate methods and welding rotator anti-creep device. In principle, it can be adopted in The detection method on the side of the weldment cylinder wall and the detection method on the end face of the weldment. The detection method of the side of the cylinder wall can not be affected by the error of the end face of the weldment, but because this detection method needs to remove the vertical rotation component of the cylinder wall, plus the influence of slipping, rough surface of the cylinder body, and dirt, it is necessary to manufacture a reliable The sensor comes not easy.

The detection method on the end face of the weldment is a common detection method at present. This detection is inevitably affected by the unevenness of the end face of the weldment and its axis in the vertical direction, so it is required to process the end face of the weldment under test. However, for large weldments, the higher the precision required for this processing, the greater the difficulty and expense. It is important to be able to reduce the requirements for end face processing. For example, the process requires that the Axial Drift of the weldment is not greater than ±2mm, but the measured end surface roughness of the weldment is greater than ±2mm. One of the important indicators of practicality.

Anti-drift welding rotator's adaptive control has the ability to modify its own characteristic parameters to adapt to the dynamic characteristics of the controlled object and disturbance. In the adaptive system, the algorithm used is the parameter tracking algorithm, that is, the computer automatically tracks the sent signal and presets the action threshold, and these parameters are not fixed during the control process. In layman's terms, it is to let the computer memorize the end face shape of the weldment first, and then distinguish the real drift amount. In this way, it is only necessary to control the amount of drift and ignore the error of the end face. Following this line of thought, after a period of adjustment, zero drift of the weldment in its axial direction can be achieved. The length of the self-adaptive process depends on the end face error of the weldment. For a weldment with an end face error of 5mm, the drift amount can be limited within ±2mm after about 15 minutes, and the weldment can be maintained after about 0.5h. 

The above is the welding rotator anti-creep device and axial drift detection and control method introduced by Bota . I hope it will be helpful to you. Bota is a high-tech enterprise integrating R&D, manufacturing and sales of intelligent automatic welding and cutting equipment. The anti-drift welding rotator developed and produced has been widely used in large-scale weldment welding in various industries, and can be customized according to the user's production process , if necessary, you can leave a message on our website, or call customer service for detailed consultation.

Mechanical Anti-Drift Welding Rotator