Upload
jesus
View
39
Download
0
Tags:
Embed Size (px)
DESCRIPTION
C omputer A ided E ngineering D rawing الرسم الهندسي المعان بالحاسوب. CAD / CAD Engineering Dr. Tahseen Fadhil Abbas 2012-2013. Engineering Drawing. Standards. Paper Sizes - PowerPoint PPT Presentation
Citation preview
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
1
Computer Aided Engineering Drawingبالحاسوب المعان الهندسي الرسم
CAD / CAD Engineering
Dr. Tahseen Fadhil Abbas
2012-2013
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
2
Engineering Drawing
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
3
Standards
Paper SizesThe ISO most recommended paper sizes for technical drawings are known as A-FORMATS. Other series, like the B-Series, are of lesser importance. In the A-Format series, the largest size is A0. The size of an A1 paper is half the size of A0 while A2 is half the size of A1 and so forth.. For technical drawings A4 is considered to be the smallest paper size. Smaller-sized AFormat papers (i.e.
A5, A6, etc) are very rarely used for technical drawings.
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
4
The A-Format Paper Sizes
When a format smaller than A4 is needed, it is obtained by simply halving A$ along its longer side. For instance A5 has 210-mm as its longer side and (297/2 = 148- mm)
as its shorter side. .
Format A4 is exclusively used in an upright position. The other formats (which are lager in size than A4) may be used in an upright position or horizontal position. .
FormatSheet mm
A0841 X 1189
A1594 X 841
A2420 X 594
A3297 X 420
A4210 X 297
…….……
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
5
Title Block
In every engineering drawing, a Title Block is included at the bottom (right-hand corner). The Title Blocks are locally standardized but should be designed in such a way that it can be easily understood. The information needed in any standard Title Block is normally: .
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
6
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
7
Basic Instruments and Equipment
T-SquareThis is one of the oldest drawing instruments that still finds wide spread use
both in the industry and in schools.
The size of a T-Square is determined by its blade length. Blade lengths of 60-mm, 90-mm, 120- mm and 150-mm are common.
USES: The T-Square is used primarily as a guide for drawing horizontal parallel lines.
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
8
Set SquareSet Squares (SSs) are transparent, triangular-shaped drawing instruments that
are used with a T-Square for drawing vertical or inclined lines.SSs contain angles most commonly used in technical drawing, i.e. 30, 45, 60
and 90.The height/length of SSs is typically 15-cm, 20-cm, and 25-cm.
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
9
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
10
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
11
Line Types
In Engineering Drawing, we make use of different lines and line styles to convey the desired message. These lines differ in (i) thickness and (ii) style. Typical uses of these lines are summarized below.
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
12
BeginningAutoCAD 2002
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
13
Starting AutoCAD 2002
a) from the Windows ‘Start screen’ with a double left-click on the AutoCAD 2002 iconb) by selecting the windows taskbar sequence::Start-Programs-AutoCAD 2002-AutoCAD 2002Both methods briefly display the AutoCAD 2002 logo and then the AutoCAD 2002 Todayscreen/dialogue box as Fig, .
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
14
The Graphics Screen
The AutoCAD 2002 graphics screen displays the following:
1 The title bar 9 The coordinate system icon
2 The ‘windows buttons’ 10 The drawing area3 The menu bar 11 The on-screen cursor4 The Standard toolbar 12 The grips 5 The Object Properties toolbar 13 Scroll bars6 The Windows taskbar 14 The Layout tabs7 The Status bar 15 The Modify toolbar8 The Command prompt window area 16 The Draw toolbar
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
15
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
16
Drawing LineAbsolute, Incremental and Polar
والقطبية والتزايدية المطلقة المدخالت باستخدام الخطوط رسم
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
17
COPYالنسخ امر استخدام
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
18
PAPER SIZEA4 ( 210 X 297 )
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
19
Title Block
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
20
Saving Drawings
In Class Ex1
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
21
Home WorkMulti solid lines and hidden lines
with the title block
2 / 12 / 2012 CAE Lab.Computer Aided Engineering Drawing
22
THANK YOU