Error Analysis and Compensation of 3D Welding Platforms in Precision Welding

Error Analysis and Compensation of 3D Welding Platforms in Precision Welding

As the core benchmark equipment for precision welding,the accuracy of 3D welding platforms directly determines weld quality and workpiece reliability,and they are widely used in high-end manufacturing fields such as aerospace and new energy vehicles.In actual operation,errors have multiple sources,and scientific compensation strategies are key to overcoming accuracy bottlenecks.

Errors mainly originate from four aspects:First,environmental errors,such as operating temperature deviations from the 20℃standard value,vibration and shock,and humidity changes,can lead to thermal deformation or positioning drift of the platform body;second,benchmark and equipment errors,such as platform body flatness deviations,T-slot spacing errors,tool wear,and fixture splicing gaps,directly affect welding positioning;third,dynamic errors,such as workpiece warping caused by welding heat input and trajectory lag caused by robot motion inertia,are major constraints on precision welding accuracy;fourth,human error,such as improper operation or reading deviations,can further amplify accuracy defects.

To address these errors,compensation technology has formed a complete system of"static calibration+dynamic tracking."At the static level,high-temperature aging treatment reduces residual stress on the platform,while ultra-precision grinding ensures the platform's accuracy.Reference gauges are also calibrated periodically.At the dynamic level,an integrated 3D vision and laser tracking system captures weld seam position deviations in real time.Data is transmitted to the controller via industrial Ethernet,driving the welding torch to achieve dynamic compensation at the±0.01mm level.Furthermore,the application of standardized interfaces and adaptive algorithms significantly reduces changeover and reset errors,improving accuracy stability in flexible production.

Precise error analysis and compensation ensure that the repeatability of the 3D welding platform remains stable within±0.05mm,with weld seam deviation controlled at the 0.1mm level.This significantly improves the first-pass yield,providing core support for the high-quality development of high-end equipment manufacturing.

GB/T 7714:Wang Z, Maropolous P G. Real-time error compensation of athree-axis machine tool using a laser tracker[JJ. TheInternational Journal of Advanced Manufacturing Technology,2013,69(1):919-933.

MLA:Wang, Zheng, and Paul G. Maropolous. "Real-time errorcompensation of a three-axis machine tool using a lasertracker." The International Journal of Advanced ManufacturingTechnology 69.1 (2013): 919-933

APA:Wang, Z., & Maropolous, P. G. (2013). Real-time errorcompensation of a three-axis machine tool using a lasertracker. The International Journal of Advanced ManufacturingTechnology, 69(1), 919-933.