![]() The worm-wheel to ensure full line tooth contact. Single enveloping gearsets require accurate alignment of If the worm is machined withĪ concave profile to effectively wrap around the wormwheel the gearset is called a double enveloping worm gearsetĪnd has the highest power capacity for the size. ![]() This is called a single envelope worm gearset. However normally the wormwheel is cut with a concave as opposed to a straight ![]() If the worm gears are machined basically as crossed helical gears the result is a highly stress The size of the worm gearset is generally based on theĬentre distance between the worm and the wormwheel. The worm is similar to a screw and the worm wheel is similar to a section of a nut.Īs the worm is rotated the wormwheel is caused to rotate due to the screw like action Worm wheel with a worm screw meshing with teeth on the periphery of the worm wheel. ![]() A worm drive consists of a large diameter A basic helical gear can be used but the power A worm gear is used when a large speed reduction ratio is required betweenĬrossed axis shafts which do not intersect. ![]()
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