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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 wheel (which is similar in appearance to a spur gear). Its main purpose is to translate the motion of two perpendicular axes or to translate circular motion to linear motion (example: band type hose clamp ).The two elements are also ...
WORM drives preceded the invention of the CD-R, DVD-R and BD-R.An example was the IBM 3363. [1] These drives typically used either a 5.1 in (13 cm) or a 12 in (30 cm) disc in a cartridge, with an ablative optical layer that could be written to only once, and were often used in places like libraries that needed to store large amounts of data.
A worm drive hose clamp similar to the Jubilee Clip tradename product of the Robinson company.. A Jubilee Clip is a genericised brand name for a worm drive hose clamp, a type of band clamp, consisting of a circular metal band or strip combined with a worm gear fixed to one end.
In 1913, they established a joint venture in America with Timken for Radicon worm drive units. By the end of World War I the workforce had increased from 200 to 1,000 as they started building propulsion units for warships, and drive mechanisms for armaments. By 1921 the company was the largest worm gear manufacturer in the world. [2]
The slewing drive is a modernized take on the worm drive mechanism, which dates back many centuries and was widely used during the Renaissance Era. Pappus of Alexandria (3rd century AD), a Greek mathematician, is credited with an early version of the endless screw, which would later evolve into the worm drive. [1]
After the Great Depression, In 1928, Skil released the Model E Skilsaw, the first generation saw with a worm drive. In 1937, Edward Sterba built the first Model 77 with a 7 + 1 ⁄ 4-inch (180 mm) blade, considered the "workhorse on building sites". [6] The 75th anniversary of the Model 77 was in 2012.
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The "regular looking gear" is the worm gear. HOWEVER, real people out in the world habitually call either one of them a "worm gear", and sometimes the pair together considered as a unit (which is better referred to as a worm drive) is also slathered with the "worm gear" name. A worm gear is not simply a spur gear. The tooth form is different.