B-REP design with face trajectories

• Main Authors: FREGER QUENTIN, MARINI LAURENT
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention notably relates to a computer implemented method for designing a 3D modeled object that represents a mechanical part. The method comprises selecting a group of faces of the B-Rep, defining a trajectory for each respective face of the group of faces, computing, for each face of the group of faces, a respective swept volume, the swept volume corresponding to the volume swept by the respective face with respect to the trajectory, assigning a material removal label or a material adding label to each swept volume, according to the position of the swept volume at the respective face with respect to the interior of the 3D modeled object, and updating the B-Rep with a material removal volume and then a material adding volume. The method improves the design of a 3D modeled object. 本发明涉及种用于设计表示机械部件的3D建模对象的计算机实现方法。该方法包括：选择B-Rep的组面，为该组面中的每个相应面定义轨迹，对于所述组面的每个面，计算相应的扫掠体积，所述扫掠体积对应于由相对于所述轨迹的相应面扫掠得到的体积，根据扫掠体积在3D建模对象的内部相应面处的位置，向每个扫掠体积分配材料移除标签或材料添加标签，以及使用材料移除体积并随后使用材料添加体积更新B-Rep。该方法改善了3D建模对象的设计。