ENGR 2 Engineering Design Graphics

Tom Rebold

AutoCAD on Campus

• Four copies in Back Row of BC208 Lab– Business/Computer science building, 2nd floor– 4 computers on left side of row– Hours: 8:30 AM to 10PM Mon-Thur– Log in engr2, mpcls drop box is available

• One copy in LS103 (Look for CRT display)– Open 8am – 8 pm usually

• Four copies in PS205, back wall, on right

Grading/Homework• Each drawing must have your name in it• I will grade only 1 exercise each week

– Picked at random• Put all your files into a folder called

– A2YourName (where 2 is the assign #)– Compress the folder (.zip file)– Drop into Drop Box– Also Print Each Drawing in B&W, staple, hand in

• Late homework 30% off

Lec 1: Getting Started (Ch1) 2D Construction (Ch2)

Chapter 1• Toolbars• Command Line• Command Tools• Drawing Units• Drawing Limits• Grid and Snap

Toolbars

• R-click on a toolbar to see which are active• Turn off and on toolbars • Move them around

Commands and Tools

• Command line– at bottom where you will enter commands– Resize

• Command Tool– hover over icon on toolbar– name of command pops up– Can use mouse or command line to access tool

Starting a new drawing• New drawing tool, File>New, type ‘new’• Select Template:

– acad for inches and ANSI dimensions– acadiso for millimeters and ISO dimensions

• Name: File>SaveAs .dwg extension

Starting a new drawing (cont)

• Units: Format>Units – choose type (Arch/Engr/Dec) and precision

• Limits: (turn on grid) Format>DrawingLimits – change to 8,5– Zoom All

• Grid and Snap– Tools>Drafting Settings can modify

Sample Problems

Sample Problems

• Ex1-2– Decimal units– Drawing limits = 594,420– Grid = 25– Snap = 12.5

Chapter 2

• Line—Random (DYN off) – Click mouse, c(lose) or enter when done, R-click repeat

• Erase—select individual or window group• Line—Snap (Grid and Snap to 0.5)• Line—Entering coordinates

– Type in 4,5 (enter) 3,6 …• Line—Dynamic Input

– enter distance (tab or <) angle• Construction Line

Chapter 2 (cont)• Circle

– Center Point and Radius or (d) Diameter– Two points: 2p then end points of diamter– Three points: 3p then enter 3 points– TTR: first draw 2 lines, then Circle, ttr, click on each, specify radius

• Circle Centerlines: – Bring up Dimension Menu, click Center Mark and a circle– Then select Dimension Styles (on R) and Modify, Sybmols/Arrows, Check line

• Polyline• Spline• Ellipse• Rectangle• Polygon

Chapter 2 (cont)

• Point• Text• Move• Copy• Offset• Mirror• Array• Rotate, trim, extend, break, chamfer, fillet, table