chuck

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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 ?
The complication was largely due to the fact that our substitute for the instantaneous release of bombs from the racks in military planes was a "human chain" consisting of pairs of "bomb chuckers," which at the time was us, the flying cadets.
Company President and CEO Charles Briggs, the game's inventor, said: "This holiday donation offers our service men and women in Iraq an off-duty diversionary pastime, a way for them to unwind and blow off a little steam by participating in the lively sporting game competition CHUCKERS provides.
As luck would have it, I moved into my current house just as she was moving out of hers, so all the accumulated junk that my chucker brother failed to divert to the tip ended up here.
However, while there's no condoning their behaviour, motorist cigarette butt flickers can justifiably claim to have been picked as an easy target when our authorities are so rarely seen to act against those responsible for more visible and/or prevalent environment harming (eg, the fast food/sweet wrapping/drinks can chuckers, chewing gum spitters, dog fouling non-scoopers, bus shelter/phone booth smashers, graffiti scrawlers etc etc).
Crowe said: "Having been pinned in the head by chuckers over 15 years, having been dubiously bowled first ball in a Test by a certain Sri Lankan bowler, having tried to bowl a decent ball myself with a straight arm, I've had more than enough of this aspect of the game.
In addition to its own vertical chuckers and vertical-spindle grinder, the builder also represents rotary-table surface grinders from Cone-Blanchard Corp.
The plant floor is chockablock with vertical and horizontal machining centers, CNC lathes, and multi-spindle chuckers that process knuckles, wheel hubs and driveline yokes and flanges.
Although allegations of throwing recur in cricket like outbreaks of flu, outlawed chuckers are a comparatively rare breed.
The heir to Barney's crown is no better than 4-11 with Skybet to win his best-of-nine dust-up with Hogan and there won't be too many taking on the arrowsmith from the town of Alphen, especially with the Orange Army having descended on Frimley Green to help turn up the volume for the healthy complement of Dutch chuckers.