US Patent: 3,618,962
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| Collet Chuck
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 17, 1970 |
| Granted: |
Nov. 09, 1971 |
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Joel Havens
"Vintage Machinery" entry for Warner & Swasey Co.
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Description: |
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Abstract
A collet chuck having a radially movable pin therein for locking a tool such as an end mill against axial withdrawal from and turning in the collet. The pin is tapered and fits within a correspondingly tapered, radially extending hole in the collet which limits its inward movement. The pin is biased into full seating engagement with the tapered hole by a retaining spring and is adapted to be cammed radially outwardly during insertion of an end mill by a beveled end on the tool shank or by the flute contour in the case of a double ended end mill. With the collet in the chuck the inner end of the pin radially overlaps a shouldered recess on the shank of the tool and the outer end contacts the inner wall of the chuck. The pin thereby prevents axial withdrawal or turning of the tool.
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