vex drive trains. drive trains vocabulary skid steering (tank drive) swerve drive holonomic (omni...
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![Page 1: VEX Drive Trains. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni Drive) Mecanum Drive](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649ea85503460f94bac33a/html5/thumbnails/1.jpg)
VEX Drive Trains
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Drive Trains
• Vocabulary• Skid Steering (Tank Drive)• Swerve Drive• Holonomic (Omni Drive)• Mecanum Drive
![Page 3: VEX Drive Trains. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni Drive) Mecanum Drive](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649ea85503460f94bac33a/html5/thumbnails/3.jpg)
Drive Train
A robot’s drive train consists of all of the components used to make the robot move.
– Motors– Wheels– Gears
![Page 4: VEX Drive Trains. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni Drive) Mecanum Drive](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649ea85503460f94bac33a/html5/thumbnails/4.jpg)
Motors
Motors can’t turn to an exact position.
Motors make attached axles spin at a set speed.
Perfect for wheels and gears.
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High Strength Motors (393)• give 30% more torque or 30%
more speed (if you change the internal gears)
• heavy• reduce battery life
Standard Motors (269)• standard motors• light weight • batteries last longer
J.M. Gabrielse
![Page 6: VEX Drive Trains. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni Drive) Mecanum Drive](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649ea85503460f94bac33a/html5/thumbnails/6.jpg)
Command Joystick Motor
Forward
(+127)
Neutral
(0)
Backward
(-127)
J.M. Gabrielse
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Tank Drive
Simplebot Base
The left and right sides of the robot are powered by different motors.
Each wheel of the Simplebot is directly connected to a motor.
motor motor
motor motor
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X-Wheel Drive
X = how many wheels are connected to motors
• Two wheel drive: two wheels are powered• Four wheel drive: four wheels are powered
How many motors the robot has doesn’t matter: • The protobot has only two motors, but it is an
example of four wheel drive since all four wheels are connected to motors.
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Skid Steering(Tank Drive)
To turn, one side goes forward and the other goes backwards.
![Page 10: VEX Drive Trains. Drive Trains Vocabulary Skid Steering (Tank Drive) Swerve Drive Holonomic (Omni Drive) Mecanum Drive](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649ea85503460f94bac33a/html5/thumbnails/10.jpg)
Wheels
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High Traction Rounded Tread
• These wheels include a smooth “grippy” tire which has high traction on smooth surfaces.
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High Traction Square Tread
• These wheels include a tire which works well on any surface.
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High Traction Rough “Knobby” Tread
• These wheels include a “knobby” tire which works great on rough terrain or loose surfaces.
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Omni-Wheels
• Rollers around the edges allow omni-wheels to roll sideways
The 4” omni-wheels are in your kits. The 3” onmi-wheels are not included.
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Swerve/Crab Drive
A swerve drive robot has the ability to rotate its wheels.
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Holonomic (Omni) Drive
Omni wheels pointing in opposite directions allow the robot to move in any direction or spin.
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Mecanum WheelMecanum wheels allow savvy robot designers to create drive trains capable of moving in any direction using a standard chassis shape. Simply power each wheel with a different motor and by changing the directions the wheels spin get your robot to move in any direction!