worm screw

Related to worm screw: worm gear

worm screw

n.
The spirally threaded shaft of a worm gear.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Some of the key parts of screw jacks are trapezoidal lifting screw, worm gear, worm screw and gear housing.
The locking mechanism of the design is a worm screw, allowing the Y axis movement to be easily adjusted by the user should they need to adjust the height of the arm rest.
Designed for heavy-duty subsea applications, the Rotork WGS quarter-turn gearbox features a worm shaft supported on tapered roller bearings, a high-strength alloy steel worm screw, and a membrane- or piston- type pressure compensator to enable operation at any depth.
"He designed the helicopter and many other machines such as the eccentric cam, the worm screw, the hygrometer, the oil press, the anemometer, the rolling mill, the flywheel, the jack or the toothed rack, the ball bearings amongst others," he said.
The new product features heavy-duty construction and integrates the casting material with a ground carbide worm screw mechanism, which helps in creating a balanced environment for rigid machining.
A PRECISION machined worm screw jack from Thomson has been designed to provide powerful lifting and positioning where space is at a premium.
Obviously the telescope should not be assembled out of balance, especially with the RA axis locked, as this will damage the worm screw and strip the wheel teeth.
The 5AX-20011 CNC Rotary Table has a patented carbide worm system that uses a carbide worm screw and ion nitrided worm wheel, rather than a conventional bronze or bronze alloy actuation mechanism.
Designed with a carbide worm system, the table has reduced friction due to the incorporated carbide worm screw and an ion-nitrided worm wheel, the company says.
Carbide worm system incorporates a carbide worm screw and an ion-nitrided worm wheel, rather than a conventional bronze or bronze alloy actuation mechanism.