Difference between revisions of "RC08-Dribbler"
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| Line 8: | Line 8: | ||
==Parts & Components== | ==Parts & Components== | ||
===Motor=== | ===Motor=== | ||
| − | + | Vendor: MicroMo | |
* Motor: 12V DC brushless servo motor #E-1628B | * Motor: 12V DC brushless servo motor #E-1628B | ||
**$147.10 each | **$147.10 each | ||
* Planetary gearhead: #E-167 gear reduction: 14 | * Planetary gearhead: #E-167 gear reduction: 14 | ||
* Complete assembly 1628-V-0003 | * Complete assembly 1628-V-0003 | ||
| − | + | Cost: $200.40 each | |
* [http://www.micromo.com/ MicroMo] | * [http://www.micromo.com/ MicroMo] | ||
| Line 27: | Line 27: | ||
=====Motor gear===== | =====Motor gear===== | ||
Vendor: SDP/SI | Vendor: SDP/SI | ||
| − | Part No: A 1B 2MYK05030H | + | Part No.: A 1B 2MYK05030H |
Description: 3mm bore, 30 teeth, 15mm pitch diameter, brass gear with set screw | Description: 3mm bore, 30 teeth, 15mm pitch diameter, brass gear with set screw | ||
Cost: $6.72 | Cost: $6.72 | ||
Drawing:[https://sdp-si.com/ss/PDF/SSUM7025.PDF Motor Gear Spec Sheet] | Drawing:[https://sdp-si.com/ss/PDF/SSUM7025.PDF Motor Gear Spec Sheet] | ||
| + | |||
| + | *Connects directly to output of motor and powers dribbler roller | ||
=====Roller gear===== | =====Roller gear===== | ||
Vendor: SDP/SI | Vendor: SDP/SI | ||
| − | Part No: A 1B 2MYK08020 | + | Part No.: A 1B 2MYK08020 |
Description: 4mm bore, 20 teeth, 16mm pitch diameter, brass gear with set screw | Description: 4mm bore, 20 teeth, 16mm pitch diameter, brass gear with set screw | ||
Cost: $9.12 | Cost: $9.12 | ||
Drawing:[https://sdp-si.com/ss/PDF/78501043.pdf Dribbler Gear Spec Sheet] | Drawing:[https://sdp-si.com/ss/PDF/78501043.pdf Dribbler Gear Spec Sheet] | ||
| − | * | + | |
| + | *Roller gear needs be turned down from 7mm face to 2mm face width | ||
| + | *Powers the dribbler roller - is recessed into the roller itself | ||
===Plates=== | ===Plates=== | ||
=====Swing===== | =====Swing===== | ||
Vendor: McMaster-Carr | Vendor: McMaster-Carr | ||
| − | Part No: | + | Part No.: 8885K13 |
| + | Description: Alloy 7075 Aluminum Sheet .063" Thick, 12" X 12" | ||
| + | Cost: $21.73 | ||
| + | |||
| + | *Contains the roller shaft, the motor mounts, spacers, and hinge shafts | ||
| + | *Material is same and shared with Omniwheel plates | ||
| + | *Left and right swings are identical | ||
| + | |||
| + | =====Motor plate===== | ||
| + | Vendor: McMaster-Carr | ||
| + | Part No.: 8885K13 | ||
| + | Description: Alloy 7075 Aluminum Sheet .063" Thick, 12" X 12" | ||
| + | Cost: $21.73 | ||
| + | |||
| + | *Supports motor and connects to the 2 spacers in assembly | ||
| + | *Material is same and shared with Omniwheel plates | ||
| + | ===Spacers=== | ||
| + | =====Spacer1===== | ||
| + | =====Spacer2===== | ||
===Fasteners=== | ===Fasteners=== | ||
| − | + | ||
===Shaft=== | ===Shaft=== | ||
| Line 55: | Line 77: | ||
===Spring=== | ===Spring=== | ||
=====Torsion spring===== | =====Torsion spring===== | ||
| − | |||
| − | |||
===Other=== | ===Other=== | ||
| + | =====4mm snap thrust bearing===== | ||
| + | Vendor: McMaster-Carr | ||
| + | Part No.:7817K33 | ||
| + | Description: Metric Nylon Snap-in Thrust Bearing for 4mm Shaft Dia, 1.45-2.34 mm Sheet Metal Thick | ||
| + | Cost: $1.32 | ||
| + | *supports dribbler shaft in the swing | ||
==Notes== | ==Notes== | ||
Revision as of 23:47, 18 December 2007
This page contains the information and documentation of the 2008 dribbler system
Contents
Assembly Structure
Parts & Components
Motor
Vendor: MicroMo
- Motor: 12V DC brushless servo motor #E-1628B
- $147.10 each
- Planetary gearhead: #E-167 gear reduction: 14
- Complete assembly 1628-V-0003
Cost: $200.40 each
- Electrical specification
- 12 Volts
- must have position or speed encoders
- brushless DC
Gears
Motor gear
Vendor: SDP/SI Part No.: A 1B 2MYK05030H Description: 3mm bore, 30 teeth, 15mm pitch diameter, brass gear with set screw Cost: $6.72 Drawing:Motor Gear Spec Sheet
- Connects directly to output of motor and powers dribbler roller
Roller gear
Vendor: SDP/SI Part No.: A 1B 2MYK08020 Description: 4mm bore, 20 teeth, 16mm pitch diameter, brass gear with set screw Cost: $9.12 Drawing:Dribbler Gear Spec Sheet
- Roller gear needs be turned down from 7mm face to 2mm face width
- Powers the dribbler roller - is recessed into the roller itself
Plates
Swing
Vendor: McMaster-Carr Part No.: 8885K13 Description: Alloy 7075 Aluminum Sheet .063" Thick, 12" X 12" Cost: $21.73
- Contains the roller shaft, the motor mounts, spacers, and hinge shafts
- Material is same and shared with Omniwheel plates
- Left and right swings are identical
Motor plate
Vendor: McMaster-Carr Part No.: 8885K13 Description: Alloy 7075 Aluminum Sheet .063" Thick, 12" X 12" Cost: $21.73
- Supports motor and connects to the 2 spacers in assembly
- Material is same and shared with Omniwheel plates
Spacers
Spacer1
Spacer2
Fasteners
Shaft
Hinge shaft
Dribbler shaft
Spring
Torsion spring
Other
4mm snap thrust bearing
Vendor: McMaster-Carr Part No.:7817K33 Description: Metric Nylon Snap-in Thrust Bearing for 4mm Shaft Dia, 1.45-2.34 mm Sheet Metal Thick Cost: $1.32
- supports dribbler shaft in the swing
Notes
- 4mm steel shaft chosen to increase strength to prevent bending of dribbler shaft when hit with a ball
- roller diameter - .5"
- dribbler shaft still slides free in between two snap-in thrust bearings and can be removed to allow the roller to be changed out
Dribbler bar prototypes
- shaft diameter on ends of bar - 3mm
- maximum diameter of dribbler - .75"
- the dribbler bar prototypes will be lathed and done coated with neoprene heat shrink
dribbler bar prototypes
- 3/4" diameter aluminum bar stock
- $8.34
- McMaster part number 6750K181
- 3mm diameter aluminum bar stock
- $6.94
- McMaster part number 1681T21
- 3/4" neoprene heat shrink
- pack of 5 for $8.97
- McMaster part number 7505K86
- 3mm e-clips
- pack of 100 for $3.03
- McMaster part number 98543A101
2007 Dribbler
Drive gear
- attached to the motor
- SDP/SI A-1B-2MYK05045 Data sheet
- 45 teeth, 3mm bore, 22.5mm pitch diameter
Dribbler gear
- attached to the roller. This is done by pressing having a set screw in the gear interfere with the roller. Both the gear and roller are free to spin on the shaft, which permitting easy change.
- SDP/SI A-1B-2MYKO5020H Data sheet
- 20 teeth, 3mm bore, 10mm pitch diameter
- gear ratio from motor to drilbber = 2.25
Motor
- 15.9mm diameter, 3mm output shaft
Specs from CMU
- Dribbler motor gear from SDP-SI: S10T05M042A0303 Module 0.5, 42 Teeth, 20° Pressure Angle , 2024 Aluminum alloy Gear
- Dribbler bar gear from SDP-SI: S10T05M028A0305 Module 0.5, 28 Teeth, 20° Pressure Angle , 2024 Aluminum alloy Gear
- spur gear reduction 1:1.5
- Dribbler Motor - Maxon
- 266521
- http://test.maxonmotor.com/docsx/Download/catalog_2007/Pdf/07_154_e.pdf
- nominal speed 28200 rpm
- Gearhead
- 118184 - Maxon
- http://test.maxonmotor.com/docsx/Download/catalog_2007/Pdf/07_215_e.pdf
- reduction 5.4:1
- nominal dribbler bar speed = 28200/5.4*1.5 = 7833 RPM. It is, of course, adjustable by software.
