Construct · 1 fields · 1 citations

screw: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
screw1 CONSTRUCTScrew (kinematics)BALL · TWIST & WRENCH

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Kinematics

Rigid motion as rotation plus translation on one axis

In the kinematics of rigid bodies a screw is the mathematical object that unifies a rotation about an axis with a translation along it, so that any rigid displacement is a screw motion and any system of forces reduces to a wrench on a screw. Davidson and Hunt's Robots and screw theory develops this calculus of twists and wrenches for the statics and motion of mechanisms. The referent is an abstract pairing of an axis with a pitch, used to describe motion and force, and it is a different construct from a threaded fastener or a ship's propeller even though all three share the helical idea.[1]

Unit
An axis together with a pitch relating rotation to translation
Recovery means
Not applicable
Measured by
Represented by screw coordinates (a twist or wrench), with pitch as the ratio of translation to rotation

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Nearby constructs

thread1 fields · 1 citationsanchor · a standalone constructaxis1 fields · 1 citationsanchor · a standalone constructbacklash2 fields · 2 citationsjingle · one word, two constructs

References

  1. Davidson, J. K., & Hunt, K. H. (2004). Robots and screw theory: Applications of kinematics and statics to robotics. Oxford University Press. ISBN 9780198562450

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