worm gear

A worm gear is a gear consisting of a shaft with a spiral thread that engages with and drives a toothed wheel. Worm gears are an old style of gear, and a ...A worm gear is a gear consisting of a shaft with a spiral thread that engages with and drives a toothed wheel. Worm gears are an old style of gear, and a version of one of the six simple machines.Worm gears are found in industrial applications, heavy equipment, and even consumer applications. Although their efficiency is relatively low, they can provide very high reduction ratios and, in many cases, are self-locking.The reason for the name “worm gear” comes from bionics. The design of worm gears was inspired by a bionic mechanism, specifically the shape of a volute. The volute's spiral shape resembles a drill bit and symbolizes forcA worm gear is a device consisting of a threaded shaft (a worm) that mates with a gearwheel (the worm wheel), so that rotary motion can be transferred between two shafts at right angles to each other.Worm gears can be used to either greatly increase torque or greatly reduce speed. They are also the smoothest and quietest of the gear systems, as long as they are properly mounted and lubricated. Another advantage of worm gears is that they have good meshing effectiveness.