Tony Young, director of electrical and automation maintenance company, CP Automation, explains the benefits of worm gearboxes
Worm gearboxes are low cost solutions for producing high torque from relatively small electric motors. Their output shaft is at a 90 degree angle to the motor input shaft and higher reduction ratios are obtained compared to conventional gearbox designs.
It would be hard to imagine how violin or guitar strings could be tuned without the use of worm gears, where each thumb screw is effectively a worm that turns a gear, the shaft from which in turn tightens a string.
A complete turn of the thumb screw results in a much smaller turn of only a few degrees at the string shaft, and therefore much higher torque. More importantly, it provides precise tuning of the guitar string. [Read more…] about Worm gearboxes produce high torque at low cost