chuck


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Idioms, Wikipedia.

chuck

1
a. a device that holds a workpiece in a lathe or tool in a drill, having a number of adjustable jaws geared to move in unison to centralize the workpiece or tool
b. a similar device having independently adjustable jaws for holding an unsymmetrical workpiece

chuck

2 Canadian W coast
1. a large body of water
2. short for saltchuck (the sea)

Chuck

 

a device for mounting and securing workpieces or cutting tools in metal-cutting or woodcutting machines. Chucks may be mechanical, pneumatic, electromagnetic, or hydraulic in operation. The most commonly used is the mechanical self-centering three-jawed lathe chuck, designed for holding regularly shaped workpieces (primarily bodies of revolution) and centering them on the lathe spindle axis. The gripping action of self-centering chucks results from rotation of a spiral-grooved plate in which the bottom surfaces of the chuck jaws are seated, causing a simultaneous, radial movement of the jaws.

A four-jawed lathe chuck is used for clamping irregularly shaped workpieces; its jaws travel radially and independently of each other. Fast-acting collet chucks are used for gripping small-diameter cylindrical workpieces on turret lathes and semiautomatic machines. Pneumatic and hydraulic chucks permit rapid gripping of the workpiece and freeing of the machined part. Electromagnetic chucks are used mainly for securing thin parts that can be deformed when clamped in chucks of other types.

N. A. SHCHEMELEV

chuck

[chək]
(design engineering)
A device for holding a component of an instrument rigid, usually by means of adjustable jaws or set screws, such as the workpiece in a metalworking or woodworking machine, or the stylus or needle of a phonograph pickup.
(metallurgy)
A small bar between flask bars to secure the sand in the upper box (cope) of a flask.

chuck

chuck
A device with adjustable jaws used for centering and holding a cutting bit, drill bit, etc.
References in periodicals archive ?
For many years, Chuck carried a large rangefinder in a custom leather holster on his hip.
In 1977, Chuck took on managerial responsibilities, becoming the director of NCAR's Atmospheric Analysis and Prediction (AAP) Division.
Chuck's DEC career spans more than 38 years, and he's headed up the Sportsman Education Program since 2012.
Stallone does appear later on (played by Morgan Spector), trying to help Chuck get a toehold in the movie business.
"He made lifelong friends and some of them will celebrate Chuck's unique award with us.
Of course, Chuck is becoming more and more of a villain on the drama series.
Despite all the differing personalities at Chase, Hay Group, and MLR, Chuck was able to fashion a consensus enabling these organizations to manage rapid growth and broad expansion.
The Old Roman had left the team to his son and daughter-in-law, Grace Comiskey, who in turn left the team to their two children, Dorothy Comiskey Rigney and Chuck. Perhaps because she knew of Chuck's propensity to make a mess of things after a few drinks, Mrs.
The workpiece is placed under the drill chuck and positioned so this guide rod can be lowered with no binding into the existing hole.
Chuck has worked at some very big stations during his storied radio career including KRLD, KCBI, and KLTY in Dallas, KCRA TV/Radio and KROY in Sacramento, and was part owner of KCNO in Grass Valley, CA.
The shield hinges left, resting at a 45[degrees] angle above the headstock, making it easy to change or adjust the chuck or workpiece.