ieng 248 d. h. jensen 9/20/2015engineering graphics & 3-d modeling1 lecture 01 ieng 248:...

IENG 248

D. H. Jensen04/19/23 Engineering Graphics & 3-D Modeling 1

Lecture 01

IENG 248:

Engineering Graphics &

Computer Modeling

IENG 248


Introduction

Lectures: Dr. Dean Jensen

Tu 1:00 - 2:50 PM IER 205

Labs:Th 2:00 – 2:50 PM IER 205

Manufacturing Innovation LabM, W, F 1:00 - 5:30 PM IER 310

GTA: Shalane Moore

Laser Engraver / 3-D PrintingCNC Lathe / CNC Milling

IENG 248

D. H. Jensen

Shalane D. Moore Education

B.S Industrial Engineering & Engineering Management South Dakota School of Mines and Technology 2013 Occupational Safety & Health Minor, Six Sigma Certificate, Creativity & Innovation Certificate Women’s Basketball Team, Culture & Attitude Recipient

Professional

•2014-2015 Safety Coordinator, Ready Foods Inc. – Denver, CO

• Building basis of safety program in custom food processing with a culturally diverse workforce

•2013-2014 Safety Management Associate, Gerdau – Wilton, IA

• Leading corporate safety program in steel manufacturing mill with strong union

•2013 Occupational Safety & Health Intern, AK Steel Corp – Zanesville, OH

• Restructuring chemical inventory and SDS databases in steel finishing with union

Personal

• Hometown: Zanesville, Ohio (Buckeye)

•Hiking, Sports, Animals

IENG 248


Objectives

Engineering Graphics Theory & Practice

Manual Sketching/DrawingImportanceStandardsInterpretationProduction

CAD ModelingTechniquesSkillsProficiency in fundamentals

WHY

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Learning Objectives

Students will develop and demonstrate:

1. The ability to describe and utilize both the scientific and empirical foundations for engineering design.

2. The ability to create 2- and 3-dimensional freehand sketches using the correct sketching techniques.

3. The ability to create and read an engineering drawing using standard views, and both conventional and GD&T dimensioning and tolerance techniques to describe form, orientation, and location accurately.

4. The ability to model solid objects using CAD software and basic operations such as extrusions, cuts, rotations, patterns, copies, sweeps, blends, and assemblies.

5. The ability to utilize CAD functions to capture design intent, and to use parametric modeling.

6. The ability to perform a basic engineering analysis from a 3-D solid model.

7. The ability to clearly and completely communicate a multi-component, conceptual design by creating drawings that follow good engineering conventions and practices.

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Office Hours

D. H. Jensen Office: 308 Ind. Eng. & Research

Bldg.

Tu, Th: 3:00 - 3:50 PM

Phone: 394 - 1278 E-mail: [email protected]

Subject Line: IENG 248

Schedule:http://jensen.sdsmt.edu/IENG248/

then follow Materials and Instructor Access links

http://jensen.sdsmt.edu/Schedule.htm

IENG 248


Texts & Materials

Suggested: Modern Graphics Communication, 4th ed.

Giesecke, Mitchell, Spencer, Hill, Dygdon, Novak, Lockhart & Goodman

Available for rent via Amazon Make sure all appendix pages are intact

Required: Engineering Notebook

7-1/2" x 9-3/4", quad ruled, 80 – 100 pp Available at the Bookstore, Staples, etc Anything that fits in this notebook is available for

exams

IENG 248


Materials

Required: Engineering Problems Paper/Pad

five squares/division, 8-1/2 x 11, three hole drilled

Mechanical Pencil, 0.5 mmgood grip

LeadHB, B

‘Clickable’ Eraser PencilPlastic rather than rubber

Small Engineering Triangles30-60-90 and 45-45-90

IENG 248


Grading

Grading is NOT curved

Grading based on a weighted percentage: 20 % Homework 30 % Project (Lab) Work 25 % Midterm Exam (in-class) 25 % Final Exam

No extra credit, but there are Bonus Points 5 % additional

Bonus Points are NOT needed to obtain a fair (accurate) grade Bonus points may tip borderline grade higher

IENG 248


Exams & Bonuses

Single, time-limited Midterm: Written/sketching, material during Lecture

Closed book/Open Engineering NotebookCovering basic principles (lines, lettering), terms,

multi-view projections, sections, sketching

Single, time-limited Final: Comprehensive, both CAD and Manual

Open Book/Open Engineering NotebookCovering basic principles, terms, techniques and

SolidWorks conceptsCovering computations, GD&T, sketching

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Bonuses & Optional Work

Bonus Points Un-announced

Class or LabNo make-up – have your stuff ready to show

Additional Project ComponentAlternate End-of-Arm Tooling Model

Optional HW & Lab Assignments Replaces lowest percentage HW or Lab, ex:

Pictorial Drawing - HWPart Manufacturing Analysis - Lab

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Due Dates & Make-Ups

Due Dates (see web schedule): HW is due (usually Tuesdays) at the start of class Labs are due (one week later) at the start of lab Project is due Wednesday of Finals Week at 5:00 PM

Late Assignments (up to 24 hours): 50 % of the earned credit, if it makes a difference No make-up assignments (turn in or do Opt’l.)

Make-up Work (student responsibility): Unforeseeable - as soon as practicable Foreseeable - as far in advance as practicable

Computer/Network Problems Expect them, but let instructor know

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Policies

Needs Accommodation: See instructor this week

Academic Honesty: Minimum standards Professional standards

Laboratory Conduct: Purpose of lab is to experiment safely Policies and procedures are in place to ensure that

experimentation is safe and productive Use common sense and practice professionalism Expect consequences if you don’t

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Course Web Site

Address:http://jensen.sdsmt.edu/248/

Course Description Schedule

Lecture topics are links to the PowerPoint slides Materials

Lab Assignment Specifics Class Resources Miscellaneous & Review Handouts

Notices Habitually check when starting work, or when stuck

Grading Updated periodically

IENG 248


Surviving & Thriving in the Course

The course is not mentally difficult, but can be time-consuming: Engineering drawings require attention to detail Drawing practices have evolved over time, and there are

many fine points to master Much of the lab and course material is “front – loaded” The exams and the project make or break grades

Annual “Best CAD Project” Competition One year student membership in IIE Cash prize Awarded at the start of next Fall Term

Covers projects from this Fall Term

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EIENG 248CH X: 2.1, 2.2

Example HW Assignment Layout

No cover sheet req’d if heading blocks filled out Use front side, never use back (grid is on the back side)

9/2/14 A. STUDENT 1 2

PROB. 2.1

PROB. 2.2

D

H

D

H

Ø l

IENG 248CH X:. 2.3, 2.49/2/14 A. STUDENT

2 2

PROB. 2.3

D

H

Ø l

ISOMETRIC VIEW:

ORTHOGRAPHIC MULTI-VIEW:

FULL-SECTION VIEW:

PROB. 2.4

D

H

Ø l

BROKEN-SECTION VIEW:

AA

SECT A-A

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ENGR 248

Example Lab Cover Page Layout

A cover sheet is always required for labs Can be either handwritten or word-processed

9/2/14 A. STUDENT 0 3

CONTENTS

1: BLOCK SECTION

2: BLOCK ASSEMBLY

3: BLOCK DIMENSIONED

4: BLOCK ASSEMBLY

LAB 1: TUTORIAL LESSONS 1-3

ENGR 248

9/2/14

A. STUDENT

PAGE 0 OF 3

CONTENTS

1: BLOCK SECTION

2: BLOCK ASSEMBLY

3: BLOCK DIMENSIONED

4: BLOCK ASSEMBLY

LAB 1: LESSONS 1 - 3

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Types of Engineering Design

Empirical Design: Experience based

HandbooksStandardsSimulations

Scientific Design: Principle based

MathematicsPhysicsChemistry

IENG 248


MGC Stages of Design

1. Problem Identification Proposal

2. Concepts/Ideas (synthesis) Notes, sketches Patent documentation

3. Compromise Solutions Analysis of concepts

4. Models/Prototypes Testing, evaluation

5. Production/Working Drawings Decision & documentation for production

IENG 248


Drafting Standards

U.S. national drafting standard is Y-14:

American National Standard Drafting Manual

Created/maintained by four organizations: ANSI (NIST) ASEE SAE ASME

Copies of the standard cost $$

IENG 248


Projections

Projection: A single view of an object

Projector: The path of a single light ray from the object to the

projection plane

Perspective Projection: All the projectors converge at some point Projectors strike the projection plane at an oblique

angle

Parallel Projection: All projectors are parallel to each other Projectors strike the projection plane at a right angle Orthographic projection

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Sketching

Freehand sketching is NOT sloppy drawing!

Technical Sketching attempts to convey design concepts quickly and clearly: Common system of line styles

Common line weights (thicknesses)Common line patterns

Common manner of letteringBlocked, sans-serif, capital lettering

Common system of views (projections)

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Some Common Lines

Visible Lines Construction Lines* Hidden Lines Center Lines Dimension Lines Extension Lines or

Section Lines Cutting Plane Lines** Phantom Lines Break Lines**

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Sketch Construction

Block in ending, transition, and mid-points with light construction lines

Lines: Horizontal strokes left to right (right handed) Vertical strokes downward

Curves: Draw with a downward motion Use enclosing rectangles, centerlines, cards/trammels

Proportions (scaling, too): Divide and conquer with enclosing rectangles Use exit and entry points of background grid

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Lettering

Upper case, no serifs, even width line strokes

Widths of letters: 1, I are one unit wide W is eight units wide TOM Q. VAXY set is six units wide Remaining letter set is five units wide Last two letters are almost as wide as they are tall

Top portions of a letter are never as wide/tall as bottom portions

Space between adjacent letter strokes is even, not the space between adjacent letter ‘envelopes’

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Assignment

Covers Lecture & Reference Text: MGC

Chapters 1 & 3 HW01:

MGC:Sketch the “Alphabet of

Lines” on EP paper. (Sketch & label lines, not the figures on the right)Worksheets 3.3 & 3.5 (in

back of text) on photocopies

Lab01: We’ll get SolidWorks loaded:

See Materials page – but wait until lab to begin

Takes some time – not all can load at the same time

NOT due right away! Process will take two periods

ieng 248 d. h. jensen 9/20/2015engineering graphics & 3-d modeling1 lecture 01 ieng 248:...

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