IENG 248 Lecture 01 IENG 248 Engineering Graphics

IENG 248 Lecture 01 IENG 248: Engineering Graphics & Computer Modeling 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 1

IENG 248 Introduction ® Lectures: n Dr. Dean Jensen l Tu 1: 00 - 2: 50 PM CB 110 ® Labs: l Tu 3: 00 – 3: 50 PM 130 IE / LIB l. W 4: 00 – 4: 50 PM 130 IE / LIB l Minimum of 10, maximum of 12 students per lab section for undergraduates – (SD BOR policy) ® UGTAs: Colleagues in your classes n Best CAD Project finalists n 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 2

IENG 248 Data Collection Name Preferred name E-mail address that you check Student ID # IENG 248 FALL 2017 Your major Hometown Anything else the instructor should know about you – part-time jobs, athletics, … 2/22/2021 IENG 475: Computer-Controlled Manufacturing Systems D. H. Jensen 3

IENG 248 Objectives ® Engineering Graphics Theory & Practice n Manual Sketching/Drawing l Importance l Standards l Interpretation l Production n CAD Modeling l Techniques l Skills l Proficiency in fundamentals 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 5

IENG 248 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. 2/22/2021 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 multicomponent, conceptual design by creating drawings that follow good engineering conventions and practices. Engineering Graphics & 3 -D Modeling D. H. Jensen 6

IENG 248 Office Hours ® D. H. Jensen n Office: Tues: Weds: l Phone: l E-mail: n 138 Industrial Eng. / Library 4: 00 - 5: 50 PM 1: 00 - 2: 50 PM 394 - 1278 dean. jensen@sdsmt. edu Subject Line: IENG 248 Schedule: l http: //jensen. sdsmt. edu/IENG 248/ then follow Materials and Instructor Access links l http: //jensen. sdsmt. edu/Schedule. htm 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 7

IENG 248 Texts & Materials ® Recommended: n Modern Graphics Communication, 4 th ed. l Giesecke, Mitchell, Spencer, Hill, Dygdon, Novak, Lockhart & Goodman ® Available for rent via Amazon ® Make sure all appendix pages are intact ® One per lab team* – stored in the lab for access ® Required: n Engineering Notebook l 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 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 8

IENG 248 Materials ® Required: n Engineering Problems Paper/Pad l five squares/division, 8 -1/2 x 11, three hole drilled n Mechanical Pencil, 0. 5 mm l good grip n Lead l HB, B n ‘Clickable’ Eraser Pencil l Plastic rather than rubber ® Recommended: n Small, wireless mouse l Two buttons, with scroll-wheel n Small Engineering Triangles l 30 -60 -90 and 45 -45 -90 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 9

IENG 248 Grading ® Grading is NOT curved ® Grading based on a weighted percentage: n n 20 % Homework 30 % Project (Lab) Work 25 % Midterm Exam (in-class) 25 % Final Exam ® No extra credit, but there are Bonus Points n 5 % additional ® Bonus Points are NOT needed to obtain a fair (accurate) grade n 2/22/2021 Bonus points may tip borderline grade higher Engineering Graphics & 3 -D Modeling D. H. Jensen 10

IENG 248 Exams & Bonuses ® Single, time-limited Midterm: n Written/sketching, material during Lecture l Closed book/Open Engineering Notebook l Covering basic principles (lines, lettering), terms, multi-view projections, sketching ® Single, time-limited Final: n Comprehensive, both CAD and Manual l Open Book/Open Engineering Notebook l Covering basic principles, terms, techniques and Solid. Works concepts l Covering computations, GD&T, sketching 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 11

IENG 248 Bonuses & Optional Work ® Bonus Points n Un-announced l Class or Lab l No make-up – have your stuff ready to show n Additional Project Component l Alternate End-of-Arm Tooling Model ® Optional HW & Lab Assignments n Replaces lowest percentage HW or Lab, ex: l Pictorial Drawing - HW l Part Manufacturing Analysis - Lab 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 12

IENG 248 Due Dates & Make-Ups ® Due Dates (see web schedule): HW is due (usually Tuesdays) at the start of class n Labs are due (one week later) at the start of lab n Project is due Wednesday of Finals Week at 1: 00 PM n ® Late Assignments (up to 24 hours): 50 % of the earned credit, if it makes a difference n No make-up assignments (turn in or do optional work) n ® Make-up Work (student responsibility): Unforeseeable - as soon as practicable n Foreseeable - as far in advance as practicable n ® Computer/Network Problems n 2/22/2021 Expect them, but let instructor know if it happens Engineering Graphics & 3 -D Modeling D. H. Jensen 13

IENG 248 Policies ® Academic Honesty: n OK to work together on Individual HW l as long as what appears on your sheet is your work, your words, and your writing n OK to work together on Team HW l team members may do individual parts and combine them n Exams are always individual work ® Laboratory Conduct: Purpose of lab is to experiment safely n Policies and procedures are in place to ensure that experimentation is safe and productive n Use common sense and practice professionalism n Expect consequences if you don’t n 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 14

IENG 248 Policies ® Needs Accommodation: 2/22/2021 n Students with special needs or requiring special accommodations should contact the instructor, Dr. Jensen, at 394 -1278 and/or the campus ADA coordinator, Megan Reder. Schopp, at 394 -6988 at the earliest opportunity. n Accommodations must be re-discussed with the instructor at least two class periods prior to an exam. Engineering Graphics & 3 -D Modeling D. H. Jensen 15

IENG 248 Course Web Site ® Address: http: //jensen. sdsmt. edu/248/ n Course Description n Schedule l Lecture topics are links to the Power. Point slides l Links to Lab Assignment specifics n Materials l Class Resources l Miscellaneous & Review Handouts n Notices l Habitually check when starting work, or when stuck n Grading l Updated periodically 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 16

IENG 248 Surviving & Thriving in the Course ® The course is not mentally difficult, but can be time-consuming: Engineering drawings require attention to detail n Drawing practices have evolved over time, and there are many fine points to master n Much of the lab and course material is “front-loaded” n The exams and the project can make or break grades n ® Annual “Best CAD Project” Competition One year student membership in IISE n Cash prize n Awarded at the start of next Fall Term n l Covers projects from this Fall Term 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 17

IENG 248 Example HW Assignment Layout ® No cover sheet req’d if heading blocks filled out n Use front side, never use back (grid is on the back side) 9/2/14 IENG 248 CH X: 2. 1, 2. 2 A. STUDENT PROB. 2. 1 1 2 9/2/14 IENG 248 CH X: . 2. 3, 2. 4 A. STUDENT 2 2 PROB. 2. 3 FULL-SECTION VIEW: ISOMETRIC VIEW: A D A Øl H D PROB. 2. 2 H ORTHOGRAPHIC MULTI-VIEW: PROB. 2. 4 Øl D SECT A-A BROKEN-SECTION VIEW: H Øl D H 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 18

IENG 248 Example Lab Cover Page Layout ® A cover sheet is always required for labs n Can be either handwritten or word-processed 9/2/14 ENGR 248 A. STUDENT 0 3 ENGR 248 LAB 1: TUTORIAL LESSONS 1 -3 LAB 1: LESSONS 1 - 3 A. STUDENT CONTENTS 1: BLOCK SECTION 2: BLOCK ASSEMBLY 3: BLOCK DIMENSIONED 4: BLOCK ASSEMBLY 9/2/14 PAGE 0 OF 3 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 19

IENG 248 Types of Engineering Design ® Empirical Design: n Experience based l Handbooks l Standards l Simulations ® Scientific Design: n Principle based l Mathematics l Physics l Chemistry 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 20

IENG 248 MGC Stages of Design 1. Problem Identification n Proposal 2. Concepts/Ideas (synthesis) n Notes, sketches Patent documentation 3. Compromise Solutions n Analysis of concepts 4. Models/Prototypes n Testing, evaluation 5. Production/Working Drawings n 2/22/2021 Decision & documentation for production Engineering Graphics & 3 -D Modeling D. H. Jensen 21

IENG 248 Drafting Standards ® U. S. national drafting standard is Y-14: American National Standard Drafting Manual ® Created/maintained by four organizations: ANSI (NIST) n ASEE n SAE n ASME n ® Copies of the standard cost $$ 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 22

IENG 248 Projections ® Projector: n The path of a single light ray from the object to the projection plane ® Projection: n A single view of an object ® Parallel Projection: n n n All projectors are parallel to each other Projectors strike the projection plane at a right angle Orthographic projection ® Perspective Projection: n n 2/22/2021 All the projectors converge at some point Projectors strike the projection plane at an oblique angle Engineering Graphics & 3 -D Modeling D. H. Jensen 23

IENG 248 Sketching ® Freehand sketching is NOT sloppy drawing! ® Technical Sketching attempts to convey design concepts quickly and clearly: n Common system of line styles l Common line weights (thicknesses) l Common line patterns n Common manner of lettering l Blocked, sans-serif, capital lettering n 2/22/2021 Common system of views (projections) Engineering Graphics & 3 -D Modeling D. H. Jensen 24

IENG 248 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** 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 25

IENG 248 Sketch Construction ® Block in ending, transition, and mid-points with light construction lines ® Lines: Horizontal strokes left to right (right handed) n Vertical strokes downward n ® Curves: Draw with a downward motion n Use enclosing rectangles, centerlines, cards/trammels n ® Proportions (scaling, too): Divide and conquer with enclosing rectangles n Use exit and entry points of background grid n 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 26

IENG 248 Lettering ® Upper case, no serifs, even width line strokes ® Widths of letters: n n n 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’ 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 27

IENG 248 Assignment ® Covers Lecture & Reference Text: n MGC l Chapters 1 & 3 ® HW 01: n MGC: l Sketch the “Alphabet of Lines” on EP paper. (Sketch & label lines, not the figures on the right) l Worksheets 3. 3 & 3. 5 (in back of text) on photocopies ® Lab 01: NO LAB THIS WEEK n We’ll get Solid. Works loaded: l See Materials page – but wait until lab to begin l Takes some time – not all can load at the same time n NOT due right away! l Process will take two periods 2/22/2021 Engineering Graphics & 3 -D Modeling D. H. Jensen 28