归谬法组合体视图形体分析与CAD三维建模读图  

Shape-analysis of Composite Body Views by Reduction to Absurdity with CAD 3D Views Reading

作　　者：陈郁琴 阳小勇 CHEN Yuqin;YANG Xiaoyong(Hunan Sany Polytechnic College,Changsha 410100,Hunan)

机构地区：[1]湖南三一工业职业技术学院,湖南长沙410100

出　　处：《湖南工业职业技术学院学报》2023年第1期14-19,共6页Journal of Hunan Industry Polytechnic

基　　金：湖南省教改项目(项目编号:ZJGB2021139)。

摘　　要：“工程制图”是机械制造、建筑学等领域的一门专业技术基础课,“组合体视图”模块项目在教学中起着承上启下的作用,形体分析法是组合体结构的首要读图方法。当几个视图需综合想象确定物体形状时,常用归谬法执果索因进行视图的形体分析,且有效的反思和体验能够使得知识内化。归谬法读图的主要步骤有:①构思组合体形状方位投影可见性;②构思组合体形状视图要求;③构思组合体形状结构实用性及合理性。用CAD(计算机辅助设计)三维建模软件实现二维与三维视图相互转换,实时动态地展示给学生,实现教学资源的真正立体化,提升课程教学效果,有利于增强学生课堂互动性和培养读图能力。"Engineering Drawing"is a professional technical basic course in the fields of mechanical manufacturing,architecture,etc.The composite body view module project plays a linking role in the teaching,and the shape-analysis method is the primary drawing method of the composite structure.When several views need to be integrated into imagination to determine the shape of the object,reduction to absurdity(reduction method)is often used to analyze the shape of the views,gradually form the methods and steps of reduction to absurdity and reading pictures,the main steps are:(a)conceive the visibility of the azimuth projection of the composite body;(b)conceive the requirements for the shape view of the composite body;(c)conceive the practicability and rationality of the shape and structure of the composite body.CAD(computer aided design)3D modelling software is used to realize the mutual conversion of 2D and 3D views,which is dynamically displayed to students in real time to realize the real three-dimensional teaching resources and enhance the teaching effect of the course.It is beneficial to enhance students'classroom interactivity and cultivate their ability to read views,as effectively solve the teaching difficulties in cross-regional and cross-industry engineering drawing courses.

关 键 词：组合体 视图 形体分析 归谬法 读图 

分 类 号：TH126[机械工程—机械设计及理论]