Orthographic Projection week 4

1
Orthographic Projectionweek 4
2
????????
Orthographic projection is a parallel projection
technique in which the parallel lines of sight
are perpendicular to the projection plane
3
????????????????????
4
Freehand drawing
5
(No Transcript)
6
??????????????
7
????????????????????????????????
???????????????????????????????
?????
?????????????????????????????????????
???????
?????????????? 2 ????
Example
8
????????????????????? ????????
9
???????????????????? AutoCAD

• ????????????????????????????????
  ??????????????????????????????????????????????
  ??? osnap, otrack, polar

10
???????????????????? AutoCAD
11
Practice 1
12
Practice 2
Top view
Isometric drawing
Front view
Side view
13
Home works

• ?????????? practice 1 2
• ????????????????? 3 ??? ??????

14
Unit Inches ??????????????? ????????????????????
?
15

• Unit mm

16
??????????????????????????? ?????????????????????
?? ????
17
?????????????????? ???????????????????????????
??????????????
????????? ????