上海交通大学：《现代机械工程图学》教学资源_教学课件_Lec03_Engdrawing2

Engineering Drawing ME 250:Design Manufacturing I School of Mechanical Engineering Shanghai Jiao Tong University 1

Shanghai Jiao Tong University 1 Engineering Drawing ME 250: Design & Manufacturing I School of Mechanical Engineering

Course Outline Descriptive Geometry Engineering Drawing Orthographic views -Auxiliary views ■Section views ■Dimensions Working drawing Shanghai Jiao Tong University 2

Shanghai Jiao Tong University 2 Course Outline n Descriptive Geometry n Engineering Drawing n Orthographic views n Auxiliary views n Section views n Dimensions n Working drawing

Engineering Drawing Why should we use and learn about Engineering Drawing? Maybe the geometry information can be expressed in 3D module by Unigraphics, but how to express the information else such as the notes,title,......? Shanghai Jiao Tong University 3

Shanghai Jiao Tong University 3 Engineering Drawing n Why should we use and learn about Engineering Drawing? n Maybe the geometry information can be expressed in 3D module by Unigraphics, but how to express the information else such as the notes, title,……?

Multi-view Drawing Isometric views can be easily and quickly understood.But maybe a number of graphical features are not shown.This happens when a given feature will overlay or partial cover other features which we are trying to show or explain. Isometric views are suitable for representing preliminary ideas or sketches. In real Engineering Practice,Multi-view Drawing is still very important. Shanghai Jiao Tong University 4

Shanghai Jiao Tong University 4 Multi-view Drawing n Isometric views can be easily and quickly understood. But maybe a number of graphical features are not shown. This happens when a given feature will overlay or partial cover other features which we are trying to show or explain. n Isometric views are suitable for representing preliminary ideas or sketches. n In real Engineering Practice, Multi-view Drawing is still very important

Orthographic Views Orthographic Views is the basic part in an Engineering Drawing. 下RONT VIEW RIGHT SIDE FRONT MEW VEW FRONTAL PLANE FRONTAL PLANE PROFRE PLANE Shanghai Jiao Tong University 5

Shanghai Jiao Tong University 5 Orthographic Views n Orthographic Views is the basic part in an Engineering Drawing

Orthographic Views Shanghai Jiao Tong University 6

Shanghai Jiao Tong University 6 Orthographic Views

Orthographic Views DEPTH WIDTH EOUAL H EOUAL WLOTH ·'FP HEIGHT Rear L side Front R side H CEPT: Bottom Shanghai Jiao Tong University 7

Shanghai Jiao Tong University 7 Orthographic Views

Exercise in Class (1) Neatly sketch the six orthographic views for the object.Do not dimensioning the drawing but maintain scale. 32 38 METRIC CENTERED Shanghai Jiao Tong University 8

Shanghai Jiao Tong University 8 Exercise in Class (1) n Neatly sketch the six orthographic views for the object. Do not dimensioning the drawing but maintain scale

Exercise in Class (1) ] Shanghai Jiao Tong University 9

Shanghai Jiao Tong University 9 Exercise in Class (1)

Exercise in Class(2) Complete the multi-view drawing by addina the missina view. VIEW LOCATION Shanghai Jiao Tong University 10

Shanghai Jiao Tong University 10 Exercise in Class (2) n Complete the multi-view drawing by adding the missing view