Robot wheels and motors [Mechanical engineering]

Robot wheels and motors

Robot Wheels | Robot Motors

To make your robot mobile, you will need motors, wheels, casters or tracks. There are a plethora of motors to choose from: tiny pager motors, servo motors, linear motors, stepper motors and DC geared motors. Tiny pager motors have an off-centre weight attached to the drive shaft, so when the motor spins, the motor vibrates. These type of motors are used in pagers and mobile phones to vibrate alerting the owner of a call or message.

Servo motors are DC motors with built in gearing and feedback control loop circuitry. They are used for RC planes and boats. Servos rotate about 90 to 180 degrees making them ideal for robot arms, legs and sensor panning. For wheel rotation you will need a continuous rotation servomotor, either by modifying a standard servo yourself or purchase the available ready "factory modified" servo. Linear actuators in contrast to conventional motors, create motion in a straight line. DC motors are rated at the most efficient running voltage. Apply power to both terminals and the motor will spin. Reverse the voltage wires and it will spin in the opposite direction. Small motors require a switch, but larger motors require a motor controller to perform more complex tasks.



Emgreat Emgreat® Motor Robot Car Chassis Kit with Speed Encoder wheels and Battery Box
Toy (Emgreat)
  • Ideal for DIY
  • Intelligent car chassis Tracing car Robot car chassis with code disk
  • including wheels:20 CM(L) X 18 CM(W)
  • not including wheels: 20 CM(L) X 15 CM(L)
  • Pergear Lens Cloth as a gift thanks for choosing Emgreat
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GHH 4pcs 66mm Tire Wheel with 4pcs DC Gear Motor for Smart Car Robot
Toy (GHH)
  • Tire Size Center hole: Long 5.3MM, 3.5MM
  • wide Diameter: 66MM
  • Width: 26MM
  • ship by ePacket with tracking number, take 7-17 days. track on usps
2 wheels Robot kit and Arduino UNO & Motor Shield
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Amico 8mm to 12mm Bore Robot Motor Wheel Coupling Coupler Silver Tone 8 x 12mm
Home Improvement (Amico)
  • Product Name : Motor Wheel Coupling;Bore : 8mm/ 5/16 , 12mm / 15/32
  • Overall Size : 22 x 30mm / 0.86 x 1.1 (D*L);Material : Metal
  • Color : Silver Tone
  • Net Weight : 68g
  • Package Content : 1 x Motor Wheel Coupling
Makerfire® Makerfire® Arduino 2WD Motor Robot Car Chassis Kit
Toy (Makerfire®)
  • Ideal for maker DIY, based on Arduino or RPI
  • Intelligent car chassis Tracing car Robot car chassis with code disk
  • Speed encoder wheels and battery box are included
  • Instructions: http://goo.gl/OZdDdZ
  • http://goo.gl/pW5KbW
uxcell 45RPM 6V N20 DC Geared Motor w Rubber Wheel for DIY Robot Smart Car
Home Improvement (uxcell)
  • Product Name : DC Geared Motor;Model : ;Rated Voltage :
  • Speed : Motor Output :1500-1RPMGear Output:about45RPM;D Hole Diameter : 3mm/0.1
  • Wheel Size : 42 x 19mm/1.6 x 0.7 (D*T);Motor Size : 24 x 12 x 10mm/0.9 x 0.5 x 0.4 (L*W*T)
  • Material : Rubber, Plastic, Metal;Color : Black, White, Silver Tone
  • Net Weight : 29g;Package Content : 1 x DC Geared Motor w Rubber Wheel

FAQ

avatar
How do I best attach a robot shaft and drive wheel to a power window motor? | Yahoo Answers

Sounds like you need to machine a ring that fits over the gear and put 3 or 4 set screws around the ring to bite into the gear teeth. Then bolt a thick steel plate to the ring with many screws thru the plate into the ring. Then take a steel rod the diameter to mate to the wheel and drill a hole down the center and put a bolt thru the center of the plate into the rod for an axle. May have weld the axle to the plate and the plate to the ring. Screws may not be strong enough.

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