Which is the drive gear in an engine?
DRIVEN GEARS The drive gear is the gear that is the source of the engine torque and rotation. The driven gear is the gear that is driven or rotated by the drive gear. Two gears meshed together are used to transmit torque and rotational motion. The driven gear can then rotate yet another gear.
How are three spur gears connected to a machine shaft?
Known:Three spur gears transmit power from a motor shaft to a machine shaft in a given geometric arrangement. The middle gear acts as an idler and is supported by two bearings. Find: (a) Determine the radial load on idler shaft bearings for a given direction of motor shaft rotation.
What kind of gear is an intersecting shaft?
Gear shafts may, as well, contain gear teeth integrated into the shaft, thus becoming a shaft gear. Such shafts with gearing at each end are called intersecting shaft gears. Bevel gears and spiral gears are intersecting shaft gears.
What kind of motor does a DC gear motor use?
DC gearmotors are either driven by permanent magnet DC (PMDC) or brushless DC (BLDC) motors. In general, parallel shaft gearmotors have a higher output torque, efficiency, and lower backlash than right-angle worm gearmotors. Planetary gearmotors are integral gearmotors with the motor shaft in-line with the gearhead output shaft.
Which is an example of a gear motor?
Sometimes the goal of using a gear motor is to reduce the rotating shaft speed of a motor in the device being driven. For example in a small electric clock where the tiny synchronous motor may be spinning at 1,200 rpm but is reduced to one rpm to drive the second hand. Further reduced in the clock mechanism to drive the minute and hour hands.
What do garage door openers and rotisserie motors have in common?
Garage door openers, stair lifts, rotisserie motors, timer cycle knobs on washing machines, power drills, cake mixers and electromechanical clocks have in common is that they all use various integrations of gear motors to derive a large force from a relatively small electric motor at a manageable speed.
How many revolutions per minute does a DC gear motor produce?
DC gear motor can be designed large enough to lift a building or small enough to drive a tiny clock. Most synchronous AC electric motors have output ranges from 1,200 to 3,600 revolutions per minute. They also have both normal speed and stall-speed torque specifications.
How is reduction gearing used in electric motors?
The reduction gear trains used in gear motors are designed to reduce the output speed while increasing the torque. The increase in torque is inversely proportional to the reduction in speed. Reduction gearing allows small electric motors to move large driven loads, although more slowly than larger electric motors.