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Development of a data interface for rapid prototyping in STEP-NC

机译：开发用于STEP-NC中快速原型制作的数据接口

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摘要

Layered manufacturing (LM) technologies, usually referred to as rapid prototyping (RP), have the ability to create a physical part directly from their computer model by adding materials on a layer-by-layer basis. Once a computer model is generated for a physical object, it needs to be communicated to other computer systems or LM machines to be further processed. Although it was developed specifically for the stereolithography process, a polygonal facet representation called stereolithography tessellation language (STL) has become the de facto industry standard for the transfer of geometric data to LM process planning system. However, STL has inevitable drawbacks such as redundancy, inaccuracy and lack of integrity. Furthermore, .STL file format is not compatible with high-level design information such as tolerance, mechanical properties and surface patterns, which will be indispensable for further design applications made by LM technologies. In this paper we propose an EXPRESS data model, an information exchange foundation of modeling operation, for the new data transfer scheme in LM community as one among STEP-NC (ISO 14649) modules.
机译：分层制造（LM）技术（通常称为快速原型设计（RP））具有通过逐层添加材料直接从其计算机模型创建物理零件的能力。一旦为物理对象生成了计算机模型，就需要将其传递给其他计算机系统或LM机器进行进一步处理。尽管它是专门为立体光刻工艺开发的，但称为立体光刻镶嵌语言（STL）的多边形刻面表示法已成为将几何数据传输到LM工艺计划系统的事实上的行业标准。但是，STL具有不可避免的缺点，例如冗余，不准确和缺乏完整性。此外，.STL文件格式与诸如公差，机械特性和表面图案之类的高级设计信息不兼容，这对于LM技术进行的进一步设计应用而言必不可少。在本文中，我们为LM社区中的新数据传输方案（STEP-NC（ISO 14649）模块之一）提出了EXPRESS数据模型，它是建模操作的信息交换基础。

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