Fundamentals of Engineering – Honors – ENGR H191 Lecture 4 - AutoCAD1 Question of the Day What show is this theme song from? ANSWER: MacGyver What is

Lecture 4 - AutoCAD 1

Fundamentals of Engineering – Honors – ENGR H191

Question of the Day

What show is this theme song from?ANSWER: MacGyver

What is the first name of MacGyver?ANSWER: Angus



Topics For Today

Engineering Expo 2002 October 3, 2000 at French Field House 9 a.m. until 4 p.m. Over 160 companies will be present Check out:

http://studentorg.eng.ohio-state.edu/~expoFor tips on a resume, check out:

http://career.eng.ohio-state.edu/ecip/student/forms.html



Topics For Today

Using the Engineering Design Process

(Review - Preparation for Lab)

More Freehand Sketching Isometric Sketches

Introduction to AutoCAD 2002 (You should have read Lesson 1 by

now!)



Topics For Today

Suggestions For Leisure Reading “All Corvettes Are Red” “The Soul Of A New Machine” “To Engineer Is Human”

Hands-on Lab Tomorrow – HI 208 READ TWTW, pp. 8-23

(or pp. 10-27 in 1st Ed.)



FEH Program Web Page

The FEH program web page may be found at:

http:// feh.eng.ohio-state.edu

Read lab write-up Tonight! Click on Labs Link on FEH Homepage



FEH Homepage

Labs

Labs



Engineering Design Process

AS DEFINED BY BERTOLINE ET. AL.

IDEATIONREFINEMENTIMPLEMENTATION

You will do it all in Lab this week



Design

What is design? PROCESS OF CONCEIVING OR

INVENTING IDEAS – Start w/ brainstorming for this lab

The Art of Design DESIGN FOR FUNCTION AND PURPOSE

The Practice of Engineering Design PRODUCT DESIGN



Isometric Sketching – Example & Ellipses

Goals A process for creating isometric drawings A process for sketching ellipses for isometric drawings

ReferenceBTG Chapter 5



30o 30o

60o60o

Isometric Axis

Making an Isometric Sketch- Defining The Axis



DepthWidth

Height

Isometric Axis Convention

Making an Isometric Sketch- Axis Convention



Object for PracticeHow would you

sketch this object?



Front Face

Height

Width

Blocking in the Object– Begin with Front Face

Start with Isometric

Axis



Height

Depth

Side Face

Blocking in the Object– Add Side Face



Top Face

Blocking in the Object – Add Top Face



Adding Detail – Cut Outs – Part 1



Adding Detail – Cut Outs– Part 2



Adding Detail – Cut Outs– Part 3



Darken Final Lines



Isometric ellipses

In an isometric drawing, the object is viewed at an angle, which makes circles appear as ellipses.

Holes

Cylinders



Ellipses can be in any plane



Sketching an Isometric of a Hollow Pipe


Fundamentals of Engineering – Honors – ENGR H191Step 1 - Creating the Base Box

Diameter

Diameter

Length



Step 2 – Ellipse on Front Face

Lines to Tangent Points

- lines to tangent points

- corner to corner to get center

Tangent Points



Step 3 – Ellipse on Front Face

Tangent Points

Sketch in Arcs


Fundamentals of Engineering – Honors – ENGR H191Step 4 – Ellipse on Back Face and Profile

Draw Tangent Lines for ProfileComplete Visible Part of Back Ellipse

Repeat for ellipse on rear face



Step 5 – Ellipse for Hole on Front Face

Create Box for Hole

Sketch Ellipse



Isometric of Hollow Pipe


Fundamentals of Engineering – Honors – ENGR H191Defining Hidden and Center Lines

Hidden Line – used to represent features that cannot be seen in the current viewCenterlines – used to represent symmetry and to mark the center of circles and the axes of cylinders, and the axes of symmetrical parts, such as cylinders and bolts



Example

Visible LineCenter Line

Hidden Line



Precedence of Lines

VISIBLE LINE takes precedence over all other lines

HIDDEN LINE and CUTTING PLANE LINE take precedence over center lines

CENTER LINE does not have precedence


Fundamentals of Engineering – Honors – ENGR H191Example Application of Precedence



Engineering Drawings

Drawing Borderline and Title Block Borderline – Space outside left blank

so details are not lost if the edge of the drawing is torn

Title Block – Information about who did the drawing, when it was done, where it was saved



AutoCAD 2002A 2D drawing and 3D modeling package

Will learn to use the software through a variety of guided exercises and homework assignments

Today's Lesson Geometric Construction Basics



AutoCAD Startup Screen

This is the opening screen for AutoCAD 2002This is the opening screen for AutoCAD 2002



AutoCAD ToolbarsObject Object

Properties Properties ToolbarToolbar

Standard Standard ToolbarToolbar

Pull-down Pull-down MenusMenus

Draw ToolbarDraw Toolbar

Modify ToolbarModify Toolbar

Graphics Graphics CursorCursor

Graphics Graphics WindowWindow

Command Command LineLineCursor Coordinate Cursor Coordinate

DisplayDisplay



Today’s DrawingThis is This is object object that that

will be will be drawn drawn todaytoday



AutoCAD Title Block

For each drawing that you turn in, you will need to insert a title blockSTEPS Complete the drawing Go to Layout 1

Click OK when the window pops up Use the Insert Command [INSERT]

Select the file “TITLE BLOCK” Select Explode the Title Block (so you can edit)

Use the Edit Command to change the text [ED]



TB – Step 1Drawing Drawing

is is CompletComplet

ee

Layout1Layout1



TB – Step 2

Select OKSelect OK



TB – Step 3TITLEBLOCKTITLEBLOCK

Select OKSelect OKExplode - YesExplode - Yes

INSERT INSERT CommandCommand



TB – Step 4

Enter TitleEnter Title

EDIT CommandEDIT Command

Click on TextClick on Text

* Repeat for each * Repeat for each Field *Field *



TB - Complete

CompletCompleted ed

DrawingDrawing

Print Print PreviePrevie

ww



AutoCAD 2002 – Lesson 2

Work through the lesson at your own pace

Ask questions as they come up

Once the Guide Plate is drawn and has a Title Block, print it and turn it in.

Draw Exercise 2 – this will be Drawing 7

Think about what you are doing while you follow the steps.

Goal - be able to draw without the book!!



Assignments

Dwg 7 – Lesson 2, Exercise 2 (page 2-23) Save as MOUNT BLOCK Due at end of class today

Dwg 8 – G15 Sketch a pictorial view of each object Due at the beginning of the next lecture

Documents

Fundamentals of Engineering – Honors – ENGR H191 Lecture 4 - AutoCAD1 Question of the Day What show is this theme song from? ANSWER: MacGyver What is