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What is the differance between gear cutting and gear hobbing?

April 26, 2017cutting differance Engineering Gear hobbing India Mathematics

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What is the differance between gear cutting and gear hobbing?

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Gear cutting is the milling of gear teeth using a cutter that is shaped the same as the required tooth profile. Gear hobbing is a process where the cutter shaping does not form the same shape as itself, the shape is generated by driving the spiral toothed cutter and the gear blank. It is particularly useful to generate tooth shape on spiral tooth gears, and worm gears, particularly worm gears that have a semicircular tooth shape, where the cutter is the same diameter and tooth shape as the worm that is to mate with the wormwheel.