基于案例推理的轴类图样尺寸自动标注研究

Research on Automatic Dimensioning of the Shaft Parts Drawing Based on CBR

摘要: 为提高工程图的绘制效率，提出应用基于实例推理尺寸自动标注技术，结合实例库构造方法和图形检索技术，提出图元重定义方法和设计实例的知识表达方法，给出了相似推理标注的算法，并合理布局尺寸，最终实现尺寸的自动标注。最后结合轴类零件的标注实例，验证了此方法的可行性。

Abstract: In this paper, we describe a method for automatic dimensioning by case-based reasoning to im-prove the efficiency of mechanical engineering drawings. In this method, we combined the case li-brary construction method and the graphics retrieval technology, and proposed the method of re-definition of the primitive and designed the method of knowledge expression of the cases. Si-multaneously, we gave the algorithm of reasoning dimensioning, and arranged the layout of di-mensions reasonably. Finally, an example of automatic dimensioning of shaft is given to show the feasibility of the proposed method.