Abstract The emergence of off-site construction has shifted many construction activities from job sites to controlled factory environments, enabling the extensive use of automated machines in the fabrication of construction-oriented products (such as fame assemblies). When using highly automated machines in agile manufacturing, the process planning becomes the bottleneck since it is mostly manual, experienced-based, and error prone. Even though the manufacturability was proven to be automatically evaluated for 2D wood-framed assemblies, many construction-oriented products, such as steel-framed assemblies, have three-dimensional features that have not yet been accounted for. This paper extends the previously developed 2D framework for 3D applications as required in steel-framed assemblies, in order to automatically check the manufacturability of steel frame assemblies given the building information model (BIM). The proposed system detects intersection regions in a frame assembly and calculates areas that require manufacturing operations, such as fastening with screws. This objective is accomplished with the use of classic techniques commonly used in computational geometry. The proposed framework is validated using a steel frame with commonly encountered geometric features in the machine environment. The result proves that the proposed approach automatically and accurately determines the manufacturing locations of the frame assembly.

中文翻译：

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自动验证钢框架组件的 3D 可制造性

摘要 异地施工的出现已将许多施工活动从工作现场转移到受控工厂环境，从而使自动化机器能够广泛用于制造面向建筑的产品（例如成名组件）。在敏捷制造中使用高度自动化的机器时，流程规划成为瓶颈，因为它主要是手动的、基于经验的且容易出错。尽管已证明可自动评估 2D 木框架组件的可制造性，但许多面向建筑的产品（例如钢框架组件）具有尚未考虑的 3D 特征。本文扩展了先前为 3D 应用程序开发的 2D 框架，以满足钢框架组件的要求，以根据建筑信息模型 (BIM) 自动检查钢框架组件的可制造性。提议的系统检测框架组件中的交叉区域并计算需要制造操作的区域，例如用螺钉紧固。这个目标是通过使用计算几何中常用的经典技术来实现的。所提出的框架使用具有机器环境中常见几何特征的钢框架进行了验证。结果证明所提出的方法可以自动准确地确定框架组件的制造位置。比如用螺丝固定。这个目标是通过使用计算几何中常用的经典技术来实现的。所提出的框架使用具有机器环境中常见几何特征的钢框架进行了验证。结果证明所提出的方法可以自动准确地确定框架组件的制造位置。比如用螺丝固定。这个目标是通过使用计算几何中常用的经典技术来实现的。所提出的框架使用具有机器环境中常见几何特征的钢框架进行了验证。结果证明所提出的方法可以自动准确地确定框架组件的制造位置。