collet chuck
- noun
- /ˈkɒlɪt tʃʌk/
- Specialized
- To ensure accuracy, a collet chuck is essential for gripping the workpiece on a lathe.
Examples
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The machinist used a collet chuck to hold the metal rod securely while drilling.
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I replaced the old collet chuck with a new one to improve the precision of my milling machine.
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And I also recently got a inexpensive eBay purchase, one of these Collet chucks, and I'm finding it actually to be pretty precise.
Synonyms
A tool that holds things tightly while you work
A part in machines like drills and lathes that holds a bit or material being worked on
A cone-shaped part that grips a round rod tightly in a machine
Surface Forms
Morphology
The compound directly combines two nouns whose meanings specify a subtype: a 'collet' (a cone-shaped clamping insert) and a 'chuck' (a tool holder/jaws). A learner who knows both constituents can readily infer it denotes a chuck that uses a collet, so the meaning is compositional and predictable.
Etymology
Collet chuck comes from two parts: a collet is a small cone that squeezes around a round object, and a chuck is a holder. So a collet chuck is literally a cone-in-a-holder used to 'clamp' round pieces tightly, which is why the name means 'a clamp that holds round pieces so a machine can work on them accurately'.