HuaGong Technology applies for patents related to weld seam coordinate systems, establishing a dynamic local coordinate system for weld seams, compensating for deviations to improve accuracy.

March 26 News, according to the State Intellectual Property Office information, Huagong Technology Industry Co., Ltd. has applied for a patent titled “Method and Device for Establishing a Dynamic Local Coordinate System on the Surface of a Weld Seam.” The application publication number is CN121720370A, the application number is CN202511938152.0, the publication date is March 24, 2026, and the application date is December 22, 2025. The inventors are Jiang Xinyi, Wan Yuanfu, Song Jiajia, Li Jingtian, Guo Songjian, and Pi Wenjing. The patent agency is Beijing Chaofan Hongyu Intellectual Property Agency Co., Ltd., with patent agent Sun Liping. The classification code is G01B11/00.

Patent Abstract: The present application provides a method and device for establishing a dynamic local coordinate system on the surface of a weld seam. After acquiring the point cloud data of the weld seam surface of the workpiece at the current moment, the method extracts a first-side parent material candidate point set and a second-side parent material candidate point set from the point cloud set. It then performs random sampling, model hypothesis, consensus verification, and model optimization on both sets to obtain the respective first-side and second-side parent material reference lines. Based on these reference lines, a dynamic local coordinate system for the current frame contour is established. This method establishes separate dynamic measurement reference coordinate systems for each independent contour section, enabling real-time compensation for systemic deviations and strong robustness against noise, thereby improving measurement accuracy.

Huagong Technology was established on July 28, 1999, and listed on the Shenzhen Stock Exchange on June 8, 2000. The registered address is in Hubei Province, with offices also located in Hubei. It is a leading enterprise in China’s laser equipment industry, with core businesses covering laser and optical communication products, possessing a full industrial chain with differentiated advantages.

Huagong Technology’s main business includes lasers, laser processing equipment, and complete sets of equipment. Its industry category is Mechanical Equipment - Automation Equipment - Laser Equipment, involving concepts such as state-owned enterprise reform in Hubei, indium phosphide wafers, and food and drug traceability.

As of 2025, Huagong Technology’s revenue reached 14.355 billion yuan, ranking first in the industry, aligned with the industry average and median. Its main business segments include optoelectronic device series products with revenue of 6.097 billion yuan (42.47%), sensitive component devices with 4.027 billion yuan (28.05%), laser processing equipment and intelligent manufacturing lines with 3.636 billion yuan (25.33%), laser holographic film series products with 464 million yuan (3.23%), and leasing and others with 131 million yuan (0.91%). Net profit was 1.454 billion yuan, also ranking first in the industry, consistent with the industry average and median.

Recent patent applications by Huagong Technology Industry Co., Ltd. are as follows:

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