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 ?
Early on, Chuck and I would use climbing stands, but Chuck, a huge muscular guy, would usually only climb up a few feet--just enough to "get his scent off the ground.
But just as The Rifleman's loop-levered Winchester with its trigger-tripping screw wasn't an ordinary saddle gun, Chuck Connors wasn't an ordinary actor.
Chuck and Buck is written and dominated by Freaks and Geeks's carrot-topped producer, Michael White, who immerses himself in the elfin Buck with a totality that is simultaneously awesome and embarrassing.
These hardened insert pads are located on the chuck by means of the ground master location ring.
To celebrate the spirit of youth, Converse debuts 'Forever Chuck,' a digital and social media series exploring three core cultural scenes that made the Chuck Taylor iconic: film and TV, LA (Los Angeles) culture and style, and the world of fashion, high and low.
These initial orders for volume quantities of Trio-Tech's Artic TC3000 Series validate our decision to enter the `front end' of the semiconductor-manufacturing process with an advanced temperature controlled chuck system developed completely in-house.
Most of the QJC chucks in the market today are the wedge-bar style.
The Rota S Plus lathe chucks feature a new body shape designed for coolant runoff at the outside so less coolant stays in the spindle bearing or the machine spindle.
Model PB and PBH pin arbor chucks offer a pull-down feature and a radial clamping feature.
The TIR of Bull's Eye chucks can be easily adjusted to zero at the cutting tool tip in less than a minute.
The WTi, WWi and WTiQ series wheel chucks handle many difficult wheel-turning applications for the automotive industry.