HCL Technologies has patented a method and system for generating the tightest revolve envelope for a Boundary representation (B-rep) Computer-Aided Design (CAD) model. The process involves receiving 2D point clouds, determining concave hull shapes, and combining them to obtain the revolve profile. The final step includes revolving the profile to create the tightest revolve envelope. GlobalData’s report on HCL Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on HCL Technologies, AI for workflow management was a key innovation area identified from patents. HCL Technologies's grant share as of April 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.

Method for generating tightest revolve envelope for b-rep cad model

Source: United States Patent and Trademark Office (USPTO). Credit: HCL Technologies Ltd

A recently granted patent (Publication Number: US11972524B2) discloses a method and system for generating the tightest revolve envelope for a Boundary representation (B-rep) Computer-Aided Design (CAD) model. The method involves receiving a 2-dimensional point cloud for each face of the CAD model, determining a concave hull shape for each face, combining these shapes to obtain a tightest revolve profile, and revolving it around the X-axis to create the final envelope. Additionally, the system includes a processor and memory to execute these instructions efficiently.

Furthermore, the method includes realigning the CAD model, generating a 3-dimensional point cloud, identifying void regions, transforming 3D data into 2D, and aligning the envelope back to the original orientation. The concave hull shape is determined by identifying boundary points and estimating the shape based on these points. Open regions in the profile are identified and joined appropriately. The system also allows for the identification of void regions and the transformation of 3D data into 2D for streamlined processing. Overall, the method and system aim to provide an efficient way to generate the tightest revolve envelope for CAD models, enhancing the design process in the field of Computer-Aided Design.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.