Elements of Mechanical Design – F13

This page contains information for SYEN 3379. Elements of Mechanical Design.

Models for Frame – by ABW

mounting strap

Drawings and Fab:
Parker – mounting strap, link spacer, CB_spacer – 12
Halbrook – eyebolt – 10
Bray – link, smalllink, cross link
Dedmon – Bearing Bracket
Wells – Spine

Gear Box Design Problem – PDF

Second test will be on the date of the final exam (Wed. Dec. 11, 10:30-12:30. Test will be on gears. It will not be a comprehensive final exam (see the syllabus).

Syllabus
Syllabus

Topics, Reading, and Date
Week 1. Intro, syllabus, and design. Read Shigley Chapter 1 and lecture notes on design
Week 2. Continue design. Failure criteria, stress exam. Read Shigley Chapter 5.
Week 3. Continue Failure
Week 4-6. Fasteners, clamping loads, bolted joint, failure modes. Read Shigley Chapter 8.
Week 7. Frame design. Deflection (Shigley chapter 4) will be expected pre-knowledge for this topic.
Week 8-9. Bearings. Read Chapter 11.
Week 10-11. Shaft Coupling and Deflection. Read Chapter 7.
Week 12-15. Spur Gears and Gear box design. Read Chapters 13, 14.
Week 16. Clutches and Brakes (time permitting). Read Chapter 16.

More to come …

Lectures
Introduction to Design
Failure
Fasteners
Shaft Coupling
Bearings
Gears

Some thoughts on Clutches, Latches, and Ratchets [PDF]

Design Exercises
1. Deflection of a Frame Assigned: 8/19/13, Due: 8/26/13
2. Controller Box Design (rough draft) Assigned: 9/30/13, Due: 10/7/13
3. Frame Design (rough draft) Assigned: 9/30/13, Due: 10/16/13
4. Controller Box Design (second draft) Assigned: 10/9/13, Due: 10/16/13
5. Controller Box Design (final draft) Assigned: 10/9/13, Due: 10/11/13
5a. Bonus Points for Controller Box …
Design Drawings (submit PDF for credit & linking on web site – due: 10/29/13)
CB_Corner – Chris Halbrook – max +2
CB_Lid – Chris Halbrook – max +2
CB_Rail – Chris Halbrook – max +5

CB_Side – Blake Parker – max +10

CB_Back – Zach Dedmon – max +3
CB_Front – Zach Dedmon – max +5

CB_Base – Jonathan Wells – max +15

Part Fabrication (Progress Check – Friday 11/1/13, Due – Wednesday:11/6/13 – in class. Penalty: -1 point per day off bonus)
CB_Corner x 4 – max +1.5 each – Jonathan Wells
CB_Lid x 1 – max +3 – Zach Dedmon
CB_Rail x8 -max +3 each – Steven Bray (3)/ZD(3)/JW(2)
CB_Base x1 – max +20 – Blake Parker
CB_Side x 2 -max +4 each – Chris Halbrook
CB_Front x 1 – max +3 – Chris Halbrook
CB_Back x 1 -max +2 – Chris Halbrook

6. Frame Design (second draft) Assigned: 10/11/13, Due: 10/18/13
7. Frame Design (final draft) Assigned: 10/21/13, Due: 10/25/13
8. Drive Wheel Design (rough draft) DUE: Dec. 4 see top of page
9. Drive Wheel Design (second draft) DUE: Dec. 9 see top of page
10. Drive Wheel Design (final draft) DUE: Date of Final Exam (Dec. 11) see top of page

Homework
HWK 1. Pick three common items and determine the top level functional requirement and the first level functional requirements. Map design parameters to functional requirements. Assigned: 8/26/13, Due: 9/2/13.

HWK 2. 8-11, 8-12, 8-13, Due: 9/30/13

HWK 3. 8-24, 8-29, 8-32, 8-67 (no bending failure), 8-71 Assigned 9/30/13, Due: 10/9/13

HWK 4. Go to mcmaster.com and find the tolerances for ABEC-5 bearings. Design a hole diameter and shaft diameter including tolerances for an R8 bearing.
From Shigley: 11-1, 11-2, 11-3, 11-4
Assigned: 11/11/13, Due: 11/18/13

HWK 5. 7-1, 7-3, 7-6, Assigned 11/11/13, Due: 11/25/13

HWK 6. Gear box calculations [PDF] Assigned: 11/25/13 Due: 12/2/13
Table to do HWK 6 [DOC]

Stress Exam
Stress Exam Specification Assigned: 8/19/13, Problems due: 9/3/13, Stress Exam: 9/4/13.

Links
Free CAD Models of Manufacturer Parts
CAD Models

McMaster-Carr
MSC
Grainger

Stock Drive Products

John Cleese’s Lecture on Creativity

Links to Parts Available for Design

Actuators
FIRST CIM MOTOR (QTY: 1 per design)
Servo Motor for Latch and Clutch (QTY: 2 per design)
Sensors
Limit Switch
Potentiometer (Link TBD)
HEDS Encoder SolidWorks IGES
Yaw Rate Sensor

608 series bearing

3200 series angular contact bearing

Scrub School Assignment
Due Dates: Pins must be presented for inspection no later than 9/13/13 at 12:00, otherwise they will incur a late penalty.
Bearing Holder must be presented for inspection no later than 9/20/13 at 12:00, otherwise they will incur a late penalty.
All final parts must be delivered by 9/27/13 (Bearing Holder with pins pressed in and Bearing Adapter) at 12:00, otherwise they will incur a late penalty.

The document describing the first lab assignment (scrub school) [PDF]
Bearing Holder [PDF]
Bearing Adapter [PDF]
Bearing Dowel [PDF]

Links to part drawings
Controller Box Design – v1- by ABW

Controller Box Design – v2 – by ABW

Bearing Holder
Bearing Adapter
Dowel Pin

Pictures

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