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1. 发明公开

EP4425363A1 THREE-DIMENSIONAL CAD SYSTEM 审中-公开
公开(公告)号：EP4425363A1
公开(公告)日：2024-09-04
申请号：EP21961615.8
申请日：2021-10-28
申请人： Core Concept Technologies Inc. , Ibaraki University
发明人： TAGUCHI, Tadaaki , INUI, Masatomo , KOMORI, Soichiro , TANAKA, Akio , Shimomura, Katsunori
IPC分类号： G06F30/10
CPC分类号： G06F30/10
摘要： Provided is a three-dimensional CAD system that is capable of displaying, at high speed, a shape including a curved surface in the form of a CSG representation. The present invention is provided with: a primitive generation unit (11) that generates a primitive by joining the edges of differential polyhedrons to configure curved surfaces and joining the curved surfaces via curved surface boundaries to configure a closed curved surface, the primitive being a set of points belonging to the inside of the closed curved surface, by using a differential polyhedron model, which is a set of differential polyhedrons including the coordinate values of the vertices of triangles, the normal vectors of the vertices of triangles, and curved line elements constituted of initial points and terminal points, as well as tangential vectors of the initial points and the terminal points, the initial points and the terminal points being constituted of the vertices of triangles; a storage unit (2) that stores CSG data representing a solid model in the form of a CSG representation by using a tree structure of set operations for the primitive; and a display processing unit (3) that obtains the intersection between the solid model and a ray from the intersection between the closed curved surface of the primitive and the ray through set operations based on the CSG data, and that calculates the position of reflection and the direction of reflection of the ray in the solid model.

2. 发明授权

EP4090516B1 SPATIAL ARRANGEMENTS OF OBJECTS FOR ADDITIVE MANUFACTURING 有权
公开(公告)号：EP4090516B1
公开(公告)日：2024-09-04
申请号：EP20913574.8
申请日：2020-01-16
IPC分类号： B29C64/393 , B33Y50/00 , B29C64/386 , G06F30/10 , G06F113/10 , G06F119/18 , G06F119/02
CPC分类号： B29C64/153 , B29C64/165 , B33Y10/00 , B29C64/386 , B33Y50/00 , B22F10/80 , B22F12/00 , B22F10/10 , G06F30/10 , G06F2113/1020200101 , Y02P10/25 , G06F2119/1820200101 , G06F2119/0220200101

4. 发明公开

EP4356279A1 METHOD OF HANDLING LARGE TRANSFORMS IN A COMPUTER-AIDED DESIGN (CAD) SOLID MODEL 审中-实审
公开(公告)号：EP4356279A1
公开(公告)日：2024-04-24
申请号：EP21740639.6
申请日：2021-06-17
申请人： Siemens Industry Software Inc.
发明人： NANSON, Peter , COLLINS, Richard , HARMAN, Mark David William , CROSS, Ben
IPC分类号： G06F30/10
CPC分类号： G06F30/10

5. 发明公开

EP4315280A1 VERFAHREN UND VORRICHTUNG ZUR AUTOMATISCHEN ANALYSE EINES SCHALTBILDES 审中-实审
公开(公告)号：EP4315280A1
公开(公告)日：2024-02-07
申请号：EP22703881.7
申请日：2022-01-10
申请人： EPLAN GmbH & Co. KG
发明人： GRUBER, Thiemo , LAYES, Vincent , PETERS, Alexander , REITZ, Marcus
IPC分类号： G06V30/422 , G06F30/10 , G06F30/12

6. 发明公开

EP4310714A1 MAP IMAGE GENERATION DEVICE, CONTROL METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM 审中-实审
公开(公告)号：EP4310714A1
公开(公告)日：2024-01-24
申请号：EP22770966.4
申请日：2022-02-14
申请人： NEC Corporation , Tohoku University
发明人： KUWAMORI Naoki , MUSA Akihiro , TAKIGAWA Yohei , KAZAMA Yuka , SATOU Yoshihiko , KOBAYASHI Hiroaki , KIKUGAWA Gota , OKABE Tomonaga , KOMATSU Kazuhiko
IPC分类号： G06F30/10 , G06F30/27
摘要： A map image generation apparatus (2000) acquires material specification information (10) representing a material specification of a material (60) and physical property information (20) representing a physical property of a product (70). The map image generation apparatus (2000) generates a self-organizing map (30) by using the physical property information (20). A position in a map space, and a physical property vector indicating, for each of a plurality of types of physical properties of the product (70), a value related to a physical property quantity of the physical property are assigned to each of nodes on the self-organizing map (30). The map image generation apparatus (2000) assigns, by using the material specification information (10), a specification vector indicating a value related to the material specification to each of the nodes on the self-organizing map (30). The map image generation apparatus (2000) generates a map image (40) based on an assignment of the specification vectors to the respective nodes. On the map image (40), the nodes are clustered or colored based on the specification vectors.

7. 发明公开

EP4300344A1 CAD FEATURE TREE OPTIMIZATION 审中-公开
公开(公告)号：EP4300344A1
公开(公告)日：2024-01-03
申请号：EP22305935.3
申请日：2022-06-27
申请人： Dassault Systèmes
发明人： BRIFAULT, Lucas , JOURDAN, Ariane , MEHR, Eloi
IPC分类号： G06F30/10 , G06T17/00
摘要： The disclosure notably relates to a computer-implemented method for generating a CAD feature tree from a discrete geometrical representation of a mechanical product. The method comprises providing the discrete geometrical representation, and a set of CAD features. The method further comprises determining one or more sequences of CAD features from the set of CAD features by optimizing an objective function which rewards a fitting of the discrete geometrical representation by a candidate sequence, and penalizes a complexity of a candidate sequence, the complexity of a candidate sequence being a function of the candidate sequence that increases when adding a feature to the candidate sequence.

8. 发明公开

EP4287059A1 SYSTEM AND METHOD FOR GENERATING ASSEMBLY INSTRUCTIONS FOR A PLURALITY OF 3D COMPONENT MODELS 审中-公开
公开(公告)号：EP4287059A1
公开(公告)日：2023-12-06
申请号：EP23176532.2
申请日：2023-05-31
申请人： PRATT & WHITNEY CANADA CORP.
发明人： GELINAS, Simon , ZENG, Yu
IPC分类号： G06F30/10 , H05K13/08 , G06T19/20
摘要： A method for generating assembly instructions for a plurality of 3D component models (34) comprises: generating the plurality of 3D component models (34) in a CAD environment, the plurality of 3D component models (34) comprising first and second 3D component models (46, 48), respectively comprising a first and a second geometric feature (54, 58); determining first assembly instructions for assembling the plurality of 3D component models (34) into a first 3D model assembly (44) in the CAD environment; determining a plurality of assembly constraints for assembling the plurality of 3D component models (34) into the first 3D model assembly (44) using the first assembly instructions, a first assembly constraint defining a connection relationship between the first and second geometric features (54, 58); modifying the plurality of 3D component models (34) by changing a quantity or composition of the 3D component models (46, 48, 50) or by changing a characteristic of one or more 3D component models (46, 48, 50); and generating second assembly instructions different than the first assembly instructions for assembling the modified plurality of 3D component models (70) into a second 3D model assembly (68) in the CAD environment using at least the first assembly constraint.

9. 发明公开

EP4280162A1 GENERATING PRISMATIC CAD MODELS BY MACHINE LEARNING 审中-实审
公开(公告)号：EP4280162A1
公开(公告)日：2023-11-22
申请号：EP23163459.3
申请日：2023-03-22
申请人： Autodesk, Inc.
发明人： LAMBOURNE, Joseph George
IPC分类号： G06T17/10 , G06F30/10
摘要： Methods, systems, and apparatus, including medium-encoded computer program products, for computer aided design and manufacture of physical structures by generating prismatic CAD models using machine learning, include: obtaining an input embedding that encodes a representation of a target two-dimensional (2D) shape; processing the input embedding using a 2D decoder of a 2D autoencoder to obtain a decoded representation of the target 2D shape; determining a fitted 2D parametric sketch model for the input embedding, including: finding a 2D parametric sketch model for the input embedding using a search in an embedding space of the 2D autoencoder and a database of sketch models associated with the 2D autoencoder, and fitting the 2D parametric sketch model to the decoded representation of the target 2D shape; and using the fitted 2D parametric sketch model in a computer modeling program.

10. 发明公开

EP4250164A1 SKETCH-PROCESSING 审中-实审
公开(公告)号：EP4250164A1
公开(公告)日：2023-09-27
申请号：EP22305354.7
申请日：2022-03-24
申请人： Dassault Systèmes
发明人： MEHR, ÉLOI , JOURDAN, ARIANE
IPC分类号： G06F30/10
摘要： The disclosure notably relates to a computer-implemented method for sketch-processing. The method comprises providing one or more input sketches. The method comprises determining one or more output sketches from the one or more input sketches. Each output sketch is closed and manifold. The determining of the one or more output sketches comprises constructing a set of manifold sketches including each manifold input sketch. The constructing of the set of manifold sketches comprises, for each respective non-manifold input sketch, determining two or more respective manifold sketches based on at least one intra-sketch intersection of the respective non-manifold input sketch. The determining of the one or more output sketches comprises combining each pair of manifold sketches of the constructed set that share at least two intersections, so as to form one or more closed and manifold sketches. The method forms an improved solution for sketch-processing.

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