IENG
248
Lecture 08
Working Drawings
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
1
IENG
248
IE Department Open House
 Dr. Kellogg’s Home:

Sunday, 06 DEC, 5:00 – 7:00 PM
 1116 West Boulevard

Free Food
 Holiday Treats
 Walking Tacos

All IE EM Students Invited
 Graduate students, too!
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
2
IENG
248
Working Drawings (3 Types)
 Detail Drawings

provide all necessary information to
manufacture a single component
 necessary views (shapes), dimensions, notes, mat’l
 Assembly Drawings

provide information necessary to describe the
fit and function of interacting components
 necessary views (relations), few / no hidden lines &
dimensions
 Patent Drawings

provide information necessary to describe the
features of an invention and support patent
claims
 explanatory (pictorial, shaded) representation
 very highly structured legal document
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
3
IENG
248
3/15/2016
Detail Drawing
Engineering Graphics & 3-D Modeling
D. H. Jensen
4
IENG
248
3/15/2016
Assembly Drawing
Engineering Graphics & 3-D Modeling
D. H. Jensen
5
IENG
248
3/15/2016
Assembly (Installation) Drawing
Engineering Graphics & 3-D Modeling
D. H. Jensen
6
IENG
248
Working Documentation - Details
 Title Block (Strip)

provides a structured arrangement of commonly
required data about the interpretation of, and the
responsibility for, the design
 shown on each drawing
 Bill of Material

provides a structured arrangement of commonly
required data about the components in the design
 attached sheet or shown on assembly drawings
 Revision Block

provides a structured arrangement of commonly
required data about the history of the design
 shown on each drawing
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
7
IENG
248
Title Block Information (Every Drawing)
 Title Block:

Part Name (Part Number *)
 Company (Client *) name & address
 Signatures of Designer (Checker *) & Engineer
 Dates of Completion & Approval
 Scale
 Drawing Number
 Engineer’s Seal *
 PE registration number
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
8
IENG
248
Revision Block Information (If On-Drawing)
 Revision Block:

Revision
 Where changes were made

Description
 What change(s) were made

Checked by
 Who approved the changes

Date
 When the changes were made
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
9
IENG
248
BOM Information (If On-Drawing)
 Bill of Materials (Parts List):

Reference Number
 Description
 Quantity Required
 Part Number *
 Detail Drawing Number *
 Material *
 Weight *
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
10
IENG
248
3/15/2016
Costed Bill of Material
Engineering Graphics & 3-D Modeling
D. H. Jensen
11
IENG
248
How to Cost Your BOM
 Get Materials Information from Web:

Density (mass per unit volume)
 www.matweb.com (or similar)
 Note the density for each req’d mat’l (g/cc3)

Cost (cost per unit volume, or cost per unit)
 www.mcmaster.com or www.onlinemetals.com (etc)
 Calculate price/unit volume for large piece
 Calculate cost/unit for fasteners for large quantity
 From Excel, for the BOM:

Multiply to find price/unit
$
mass
$
volume

x
x
unit
unit volume mass

Roll up sub-assembly costs to find total cost/assembly
$
# components
$

x
ass ' y
ass ' y
component

3/15/2016
NOTE: This is only the material cost, there are
additional costs reflected in the purchase price!
Engineering Graphics & 3-D Modeling
D. H. Jensen
12
IENG
248
3/15/2016
Costed Bill of Material
Engineering Graphics & 3-D Modeling
D. H. Jensen
13
IENG
248
Project Components
 Skid Loader Toy:

Produce for 3-D Printer
 Need a pretty solid base
 Printing overhangs is a problem

Teams of about 5 students
 Partial instructor assignment

Parts Needed:
 All nine parts of the design packet (team)
 One end effector from each team member
 How to model parts:
 Start with a simple base shape (extrude boss or rotate profile), then
add (extrude bosses) or subtract (extrude holes) from there
 Sometimes it helps to dimension from smallest to largest features
 May need to compute / infer some dimensions; may alter shapes to fit!
 May add details – better play value!
 Team Design Packet:


3/15/2016
(turn in by 5:00 PM on Wed. 16 DEC)
(1) Cover page with all team member names
(1+) Assembly Drawings and (14) Detail Drawings
Engineering Graphics & 3-D Modeling
D. H. Jensen
14
IENG
248
Project Components
 Team Data (Cards):

Teams of about 5 students
 Partial instructor assignment

Names Needed:
 On Front: Need a Company Name for your team
 On Front: Need the names of all your Team Members
 On Back: Need names for all 9 Detail and 1 Assembly drawings










Cab Side Left
Cab Sheet Metal
Lift Arm
Wheel Rim
Wheel Hub
Tire
Cab Interior
Cab Roof
Arm Pivot
Assembly (with BOM)
 Assumed: End effector Detail Drawing from each team member
3/15/2016
Engineering Graphics & 3-D Modeling
D. H. Jensen
15
IENG
248
Project Help Sessions
 On Card Front:

Need Priority Order for Help Session Times:
 Check with your teammates availability to put these in order
 Available times:





Friday
Friday
Monday
Tuesday
Tuesday
11 DEC
11 DEC
14 DEC
15 DEC
15 DEC
9:00 AM – 12:00 PM
1:00 PM – 4:00 PM
9:00 AM – 12:00 PM
9:00 AM – 12:00 PM
1:00 PM – 4:00 PM
 GTA and I will pick TWO and let you know on Thursday at lab time
 Term Ending Schedule:






3/15/2016
Thu 03 DEC – Demonstration of Assembly Drawings in S/W
Tue 08 DEC –Exam Review, HW 06 & 07 returned, and Student
Course Evaluations
Thu 10 DEC – Final Exam
1:00 – 2:50 PM
IER 205 (here)
TBD
– Help Session I
TBD
– Help Session II
Wed 16 DEC – Team Project Documentation due (5:00 PM)
Engineering Graphics & 3-D Modeling
D. H. Jensen
16