A gear shaper is a machine tool for cutting the teeth of internal or external gears. The name shaper relates to the fact that the cutter engages the part on the forward stroke and pulls away from the part on the return stroke, just like the clapper box on a planer shaper. The cutting tool is also gear shaped having the same pitch as the gear to be...
Found on
http://en.wikipedia.org/wiki/Gear_shaper
(from the article `machine tool`) ...such as making screws, and it presaged the momentous developments of the 20th century. Various gear-cutting machines reached their full ... ...rack blank. This principle is applied in the design of a number of widely used gear-cutting machines of the generating type. Gear-generating ... [2 related...
Found on
http://www.britannica.com/eb/a-z/g/15
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