Difference between revisions of "RC08Drive Module"
Jump to navigation
Jump to search
(→Parts List) |
|||
| (17 intermediate revisions by 4 users not shown) | |||
| Line 1: | Line 1: | ||
| − | As part of the [[ | + | As part of the [[RoboCupMechanical|RoboCup 2008 Mechanical]], the Drive Module packages the gears, wheel, and motor into an useful robot maneuvering tool. |
[[Image:RC2008DriveModule.jpg|thumb|right|2008 RoboJackets RoboCup Drive Module]] | [[Image:RC2008DriveModule.jpg|thumb|right|2008 RoboJackets RoboCup Drive Module]] | ||
| Line 39: | Line 39: | ||
===Bearings=== | ===Bearings=== | ||
=====1/4" Shaft Diameter===== | =====1/4" Shaft Diameter===== | ||
| − | :Vendor - | + | :Vendor - Grainger |
| − | :Part No. - | + | :Part No. - 1ZEJ7 |
| − | :Cost - $ | + | :Cost - $5.59 Each |
| − | :Description - Miniature | + | :Description - Miniature Ball Bearing, Open, Flanged, Bore Dia 0.2500 In, Outside Dia 0.5000 In, Width 0.1250 In, Flange Dia 0.5470 In, Flange Thickness 0.0230 In, ABEC Level 3 |
| − | : | + | :Info - [http://www.grainger.com/Grainger/wwg/productIndex.shtml?operator=keywordSearch&search_type=keyword&QueryString=1ZEJ7&submit.x=6&submit.y=6 Web Link] |
===Gears=== | ===Gears=== | ||
| Line 119: | Line 119: | ||
:Description - Aluminum Female Threaded Hex Standoff 1/4" Hex, 1/2" Length, 8-32 Screw Size | :Description - Aluminum Female Threaded Hex Standoff 1/4" Hex, 1/2" Length, 8-32 Screw Size | ||
| − | ===== | + | =====Shimming Washers (may not be needed)===== |
| − | |||
| − | |||
| − | |||
| − | |||
=====5/16" Hex Broach===== | =====5/16" Hex Broach===== | ||
| Line 145: | Line 141: | ||
:Note - Use behind omni due to hex size change. | :Note - Use behind omni due to hex size change. | ||
| − | == | + | ==Cost Estimate== |
| − | + | # Motors - $85.00 | |
| − | + | # Fasteners - $0.90 | |
| − | $85.00 | + | # Standoffs - $0.03 x 15 = $0.45 |
| + | # Output Shaft - $4.00 | ||
| + | # Output Gear - $24.00 | ||
| + | # Input Gear - $13.25 | ||
| + | # Plates - | ||
| + | # Attachment - | ||
| + | : '''Total''' - $128.60 | ||
| + | :: ''Note - Shipping is included in per unit cost.'' | ||
==Action Log== | ==Action Log== | ||
| Line 159: | Line 162: | ||
# 03/01/2008 - All gears will be stainless 303 and the output shaft will be a lower end steel. | # 03/01/2008 - All gears will be stainless 303 and the output shaft will be a lower end steel. | ||
#: Note - This fixes shaft problems and some observed wear on the 2024 input gears. | #: Note - This fixes shaft problems and some observed wear on the 2024 input gears. | ||
| + | # 03/19/2008 - Switched to ABEC 3 bearings form grainger. | ||
| + | #: Note - Reduces cost per bearing from $6.80 to $5.59. | ||
| + | # 03/30/2008 - All holes moved down 0.1" and all standoffs repositioned. | ||
| + | #: Note - Fixes low ground clearance concerns. | ||
| + | # 04/06/2008 - Drive modules reshaped (for machining time) and finalized. | ||
| + | # 05/14/2008 - Input gears arrive. | ||
| + | # 05/20/2008 - Output gears arrive. | ||
| + | |||
| + | [[Category: RC Mechanical]] | ||
| + | [[Category:2007-2008]] | ||
Latest revision as of 19:50, 24 May 2020
As part of the RoboCup 2008 Mechanical, the Drive Module packages the gears, wheel, and motor into an useful robot maneuvering tool.
Contents
Assembly Structure
Parts List
- 1 - Omni Wheel (RC-2008-02-00)
- 1 - Maxon Brushless Drive Motor (RC-2008-03-01)
- 1 - Drive Module Plate (inner) (RC-2008-03-02)
- 1 - Drive Module Plate (outer) (RC-2008-03-03)
- 1 - Base Attachment (RC-2008-03-07)
- 1 - Output Shaft (RC-2008-03-06)
- 3 - 1/2" Long Hex Standoffs (RC-2008-03-11)
- 1 - Input Gear (RC-2008-03-05)
- 1 - Output Gear (RC-2008-03-04)
- 2 - 1/4" Ball Bearings (RC-2008-03-08)
- 2 - 1/4" E-Clips (RC-2008-03-09)
- 4 - 8-32 Socket Cap Screws Counter Sunk (RC-2008-03-12)
- 3 - 8-32 3/8" Long (RC-2008-03-13)
- 1 - Washer (RC-2008-03-10)
- 3 - M3 Machine Screws (RC-2008-03-14)
- 1 - 5/16" E-Clips (RC-2008-03-15)
Instructions
- Press bearings in to plates so that flange is always on the the with out counter sinks.
- Using RC-2008-03-13 and RC-2008-03-11 attach the base attachment to the inner drive module plate (inner plate).
- Using RC-2008-03-12 fasten top stand off (RC-2008-03-11) to the inner plate.
- Mount motor with RC-2008-03-14. Position motor so that the wiring is coming out of the smaller removed corner.
- Place input gear on motor such that the hub is closer to the motor.
- Put output shaft in outer plate's bearing with hex side on the side with counter sinks.
- Place an e-clip on the groove outside the outer plate and immediately inside the outer plate.
- Put output gear on the output shaft (now in the inner plate) with the hub facing away from the outer plate.
- Add an e-clip to the last groove.
- Align the outer plate and then fasten it to the standoffs (already on inner plate) using RC-2008-03-12.
- Put omni wheel on output shaft with screws facing out.
- Using the washer (RC-2008-03-10) and 8-32 fasten the omni wheel in place.
Parts & Components
Bearings
1/4" Shaft Diameter
- Vendor - Grainger
- Part No. - 1ZEJ7
- Cost - $5.59 Each
- Description - Miniature Ball Bearing, Open, Flanged, Bore Dia 0.2500 In, Outside Dia 0.5000 In, Width 0.1250 In, Flange Dia 0.5470 In, Flange Thickness 0.0230 In, ABEC Level 3
- Info - Web Link
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)
- Note - Al 2024
Input (Back Up Supplier)
- Vendor - WM BERG
- Part No. - P72S10-20
- Cost - $13.25 Each (Same for bulk)
- Description -
- Note - Stainless 303
Output
- Vendor - SDP/SI
- Part No. - S1066Z-072S100
- Cost - $17.72 ($13.02 in bulk)
- Description - 1.3889" Pitch Dia, 0.125" Face Width, 0.25" Bore
- Note - Stainless 303
Output (Back Up Supplier)
- Vendor - WM BERG
- Part No. - P72S28-100
- Cost - Each
- Description -
- Note - Stainless 303 & thicker (7/16)"
Stock
5/16" Hex Bar Stock
- Vendor - McMaster-Carr
- Part No. - 6512K14
- Cost - $5.85 Each
- Description - 1018 Carbon Steel Hexagonal Bar 5/16" Hex Size, 6' 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
Shimming Washers (may not be needed)
5/16" Hex Broach
- Vendor - McMaster-Carr
- Part No. - 2875A17
- Cost - $110.05
- Description - Hexagon Broach 5/16" Hex, 7-3/4" 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
5/16" E-Clips
- Vendor - McMaster-Carr
- Part No. - 97633A150
- Cost - $6.97 (Pack of 100)
- Description - Black-Phosphate Steel External Retaining Ring for 5/16" Shaft Diameter
- Note - Use behind omni due to hex size change.
Cost Estimate
- Motors - $85.00
- Fasteners - $0.90
- Standoffs - $0.03 x 15 = $0.45
- Output Shaft - $4.00
- Output Gear - $24.00
- Input Gear - $13.25
- Plates -
- Attachment -
- Total - $128.60
- Note - Shipping is included in per unit cost.
Action Log
- 12/26/2007 - Inner and Outter Drive Module Plates completed.
- Note - Motor mount holes should be rotated a few (3-5 deg) for better motor cable fitting.
- 01/27/2008 - Output shaft should be Steel 303, AL 2024, or AL 7075 (The AL is too weak to survive assembly)
- Note - The shafts we machined were out of spec and we should have paid to outsource them.
- 02/24/2008 - All holes were move down 0.1in to allow for better ground clearance.
- Note - Hole needs to be made in bottom plate to allow for gear to poke threw will cover opening with tape to keep out carpet fibers.
- 03/01/2008 - All gears will be stainless 303 and the output shaft will be a lower end steel.
- Note - This fixes shaft problems and some observed wear on the 2024 input gears.
- 03/19/2008 - Switched to ABEC 3 bearings form grainger.
- Note - Reduces cost per bearing from $6.80 to $5.59.
- 03/30/2008 - All holes moved down 0.1" and all standoffs repositioned.
- Note - Fixes low ground clearance concerns.
- 04/06/2008 - Drive modules reshaped (for machining time) and finalized.
- 05/14/2008 - Input gears arrive.
- 05/20/2008 - Output gears arrive.
