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Edward Lowton
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Indexing chucks
04 December 2014
Workholding specialist Leader Chuck Systems offers a wide range of 2-jaw self-centring indexing chucks in diameters from 125 to 500mm. Specifically-designed for holding valve bodies and similar fittings, the chucks feature interchangeable indexing plates. Usual divisions are four 90o movements with an indexing accuracy of +/- 2 seconds of arc, but divisions of any incremental angle can be specified.
"It is not a new concept,” says MD, Mark Jones, "but indexing chucks offer significant advantages for difficult to hold components that would require multiple or staged fixing that could introduce errors.
"Historically, they have been popular in the production of volume automotive and valve industries for components such as trunnions, couplings and universal joint spiders, valve bodies and multi way connectors. Component accuracy is derived from the indexing accuracy of the chuck as all the machining is effectively related to the first datum setting.”
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