《零件图的视图选择》PPT课件.ppt

1、Choosing Views 零件图的视图选择,Selecting the front view 选择主视图 Selecting other views 选择其他视图,请点击相应标题显示其内容,Principle of Selection Views 视图选择原则,Selecting the front view 选择主视图,（1） Form features 形状特征 The front view should reflect the main shapes and relative positions among parts, as much as possible. 主视图要较多地反映出

2、零件各部分的形状和它们之间的相对位置。,请点击鼠标左键显示后面内容,（2）Installation site 安放位置 It refers to machining or working position. 安放位置即零件的加工位置或工作位置。,2. Selecting other views 选择其他视图,Sections not clearly conveyed in the front view should be shown in other views. Chosen views should convey key features and avoid repetition. 主视图

3、中没有表达清楚的部分，要用其他视图表示。所选择 的视图应有其重点表达内容，并尽量避免重复。,请点击鼠标左键显示后面内容,Principle of Selection Views 视图选择原则,In short, views are selected according to their purposes. They should clearly depict the part, and provide as much information as possible. Use an adequate number of views to facilitate comprehension. 总之，

4、选择视图要目的明确，重点突出，使所选视图表达方案完整、清晰，数目恰当，做到看图方便，作图简便。,本 小 节 结 束,谢谢您的认真学习！,退出,前一页,Choosing the front view of the bracket 选择支架主视图,Bracket 支架,Projection A A向投影,Projection B B向投影,请点击鼠标左键显示后面内容,The front view of the bracket thoroughly reflects the structures and relative positions of the various holes. 较好地表达了各

5、种不同结构的孔及其相对位置关系,Principle of Selection Views 视图选择原则,Machining position of a flange 法兰盘在车床上用卡盘夹持加工,Machining position of a shaft 轴在车床上用顶尖夹持加工,请 点 击 鼠 标 左 键 显 示 后 面 内 容,Principle of Selection Views 视图选择原则,Selecting the front view In order to facilitate comprehension when producing, the front view of t

6、he transmission shaft, hand wheel and other parts should be placed in accordance with their machining positions. 为使生产时便于看图，传动轴、手轮、盘状等零件的主视图按其在车床上加工时的位置摆放。,Finial 顶尖,Choosing other views of the bracket 选择支架其他视图,Bracket 支架,请 点 击 鼠 标 左 键 显 示 后 面 内 容,Principle of Selection Views 视图选择原则,Project 1 表达方案1,P

7、roject 2 表达方案2,This project use an adequate number of views to facilitate comprehension. 此方案较佳，数目恰当,Principle of Selection Views 视图选择原则,请点击鼠标左键显示后面内容,Box 箱体,Views for box of worm wheel retarder 蜗轮减速箱零件表达,Choosing the front view of box 选择箱体主视图,C,B,D,A A,Valve body 阀体,Project 1 表达方案1,Project 2 表达方案2,请点击鼠标左键显示后面内容,Principle of Selection Views 视图选择原则,This project use an adequate number of views to facilitate comprehensi