AutoCAD三维模型尺寸标注方法及技巧

摘要

There is no special orders in AutoCAD for dimensioning three-dimensional model , so two-dimensional dimensioning commands are used to annotate the 3D model ,which is time consuming and error prone .Combining a concrete example ,this paper introduces the size-marking methods ,techniques and rules in three dimensional CAD drawing ,and finds out the relationship between the text direction and coordinate system X ,Y ,and Z axes .%应用AutoCAD进行三维模型尺寸标注时由于没有提供专门命令，只能借助二维尺寸标注命令进行标注，这样在标注三维模型尺寸时有一定难度并且容易出错。结合实例介绍了三维模型尺寸标注方法、技巧和规律，找出了文本方向与坐标系 X轴、Y 轴和Z轴的关系。