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fischertechnik Mechanisms
Principles of Engineering © 2012 Project Lead The Way, Inc.
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Universal Joint Transmits power when shafts are not in line
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Spur Gears Change speed, torque, and rotational speed
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Idler Gear No effect on speed and torque, but input and output shafts turn in the same direction
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Rack and Pinion Rack (in red) and pinion (in black) converts rotary motion of the pinion gear to linear motion of the rack Reversible, positive drive with no slipping
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Crown and Pinion Mechanism reduces speed and increases torque
Output shaft is at a 90-degree angle to the input shaft Gears rotate in opposite directions
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Bevel Gears Gears increase torque or speed
Output shaft is at a 90-degree angle to the input shaft Gears rotate in opposite directions
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Worm Gear Gear increases torque and reduces speed
Output shaft is at a 90-degree angle to the input shaft Direction of rotation can be reversed, but the output gear cannot drive the worm gear
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Cam As a cam rotates the flat follower is raised and lowered, converting rotary motion to linear motion CAM LOBE FOLLOWER
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Chain and Sprocket Chain and sprocket apparatus increases speed or torque Mechanism can run in reverse direction with no slipping Input and output shafts rotate in the same direction
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Pulley and Belt Mechanism can increase torque or speed and can run in reverse Input and output shafts are parallel and rotate in the same direction The belt may slip
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Motor Driven Worm Gear Gear reduces speed and increases torque
Output shaft is at a 90-degree angle to the input shaft Direction of motion is reversible, but the output gear cannot turn the worm gear
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Motor Driven Pulley and Belt
Mechanism can increase torque or speed Input and output shafts are parallel and rotate in the same direction The belt may slip
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Screw Mechanism converts rotary motion to linear motion and increases torque Direction of rotation is reversible
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