universal chuck

noun

a chuck, as on a lathe headstock, having three stepped jaws moving simultaneously for precise centering of a workpiece of any of a wide range of sizes.

First recorded in 1815–25

The casting is held by three special hardened jaws b in a universal chuck.

Fig. 28 shows the tool equipment for turning a cylindrical part A which is held in a three-jaw universal chuck.

The jaws may be reversed in their slots and operated simultaneously as a universal chuck, or independently as a simple jaw chuck.

The work is held in a universal chuck, and if long is supported by a stay as shown in the figure.

April 19, 2024tortuous

[tawr-choo-uhs ]

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