w orm drive. w hat is it ? a worm drive is a gear arrangement in which a worm (which is a gear in...

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WORM DRIVE

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Page 1: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

WORM DRIVE

Page 2: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

WHAT IS IT?

A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which is similar in appearance to a spur gear, and is also called a worm wheel).

Like other gear arrangements, a worm drive can reduce rotational speed or allow higher torque to be transmitted. The image shows a section of a gear box with a worm gear being driven by a worm. A worm is an example of a screw, one of the six simple machines.

Page 3: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

SECTION OF A GEAR

types of screws and gears

Page 4: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

USE IN REAL LIFE

A worm drive controlling a gate.

Worm drives are used in presses, in rolling mills, in conveying engineering, in mining industry machines, and on rudders. Worm gears are used on many lift (elevator) and escalator

Page 5: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

Worm drives are used as the tuning mechanism for many musical instruments, including guitars, mandolins , which use planetary gears. A worm drive tuning device is called a machine head.

Page 6: W ORM DRIVE. W HAT IS IT ? A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which

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