RC08Drive Module

The Drive Module packages the gears, wheel, and motor into an useful robot maneuvering tool. Robocup 2008 Mechanical

2008 RoboJackets RoboCup Drive Module

Assembly Structure

Parts List

1. 1 - Omni Wheel (RC-2008-02-00)
2. 1 - Maxon Brushless Drive Motor (RC-2008-03-01)
3. 1 - Drive Module Plate (inner) (RC-2008-03-02)
4. 1 - Drive Module Plate (outer) (RC-2008-03-03)
5. 1 - Base Attachment (RC-2008-03-07)
6. 1 - Output Shaft (RC-2008-03-06)
7. 3 - 1/2" Long Hex Standoffs (RC-2008-03-11)
8. 1 - Input Gear (RC-2008-03-05)
9. 1 - Output Gear (RC-2008-03-04)
10. 2 - 1/4" Ball Bearings (RC-2008-03-08)
11. 3 - 1/4" E-Clips (RC-2008-03-09)
12. 4 - 8-32 Socket Cap Screws Counter Sunk (RC-2008-03-12)
13. 3 - 8-32 3/8" Long (RC-2008-03-13)
14. 1 - Washer (RC-2008-03-10)
15. 3 - M3 Machine Screws (RC-2008-03-14)

Parts & Components

Bearings

1/4" Shaft Diameter

Vendor - McMaster-Carr

Part No. - 57155K304

Cost - $6.80 Each

Description - Miniature Precision SS Ball Bearing - ABEC-5 Flanged Open, .25" ID, .5" OD, .125" Width

Drawing - File:RC08-MC-57155K304.pdf

Gears

Input

Vendor - SDP/SI

Part No. - S1063Z-072A020

Cost - $9.83 ($6.76 in bulk)

Description - 0.2778" Pitch Dia, 0.125" Face Width, 0.125" Bore (must bore out to 4mm)

Drawing -

Note - Al 2024

Output

Vendor - SDP/SI

Part No. - S1066Z-072S100

Cost - $17.72 ($13.02 in bulk)

Description - 1.3889" Pitch Dia, 0.125" Face Width, 0.125" Bore (must bore out to 4mm)

Drawing -

Note - Stainless 303

Stock

1/4" Hex Bar Stock

Vendor - SDP/SI

Part No. - A 7C21-0436

Cost - $4.39 Each ($3.27 in bulk)

Description - Carbon Steel 36" length

Al Plate 1/8"

Vendor - McMaster-Carr

Part No. - 89015K18

Cost - $26.06

Description - Alloy 6061 Aluminum Sheet .125" Thick, 12" X 12"

Al Angle (Base Attachment)

Vendor - McMaster-Carr

Part No. - 88805K54

Cost - $14.87

Description - Alloy 6063 Aluminum 90 Degree Angle 1/8" Thick, 1" X 1/2" Legs, 8' Length

Fasteners

8-32 Flat Socket Cap Screws

Vendor - McMaster-Carr

Part No. - 92210A190

Cost - $11.58 (Pack of 100)

Description - 18-8 SS Flat Head Socket Cap Screw 8-32 Thread, 1/4" Length

M3 Screws (Drive Motor Mount)

Vendor - McMaster-Carr

Part No. - 92005A116

Cost - $2.16 (Pack of 100)

Description - Metric Pan Head Phillips Machine Screw Zinc-Plated Steel, M3 Size, 6mm Length, .5mm Pitch

8-32 Low Head Socket Cap Screw

Vendor - McMaster-Carr

Part No. - 92220A152

Cost - $11.60 (Pack of 100)

Description - Alloy Steel Low Head Socket Cap Screw 8-32 Thread, 3/8" Length

Other

1/2" Long Hex Stand Off

Vendor - McMaster-Carr

Part No. - 91780A195

Cost - $0.34 Each ($0.27 in bulk)

Description - Aluminum Female Threaded Hex Standoff 1/4" Hex, 1/2" Length, 8-32 Screw Size

Washer

Vendor - McMaster-Carr

Part No. - 98029A026

Cost - $5.95 (packs of 25)

Description - Black-Oxide Steel Thick Flat Washer #8 Screw Size, 11/64" ID, 3/8" OD,.052" - .073" Thk

1/4" Hex Broache

Vendor - McMaster-Carr

Part No. - 2875A15

Cost - $105.37

Description - Hexagon Broach 1/4" Hex, 6" Broach Length

1/4" E-Clips

Vendor - McMaster-Carr

Part No. - 97633A130

Cost - $6.54 (Pack of 100)

Description - Black-Phosphate Steel External Retaining Ring for 1/4" Shaft Diameter

Note - Inside of bearings

Costs

Per Module (Estimated)

Note you cannot buy materials in small enough quantity. $85.00 + $9.83 + $17.72 + 2*$6.80 + $0.238 + 3*$0.0373 + $0.34*3 + $0.0654*3 + $0.304 + $0.34 = $128.36 --> $140.00