Sealed collet having improved radial flexibility for facilitatin

Details Sealed collet having improved radial flexibility for facilitatin Sealed collet having improved radial flexibility for facilitatin

1997-04-18

1999-06-15

Pitts, Andrea L.

Chucks or sockets

Socket type

Spring biased jaws

279 42, 279 435, 279 437, 279 439, 279 465, 279 467, 279 48, 279 52, 279 56, 279157, B23B 534, B23B 3120, B23B 3110, B23B 3116

Patent

active

059114215

ABSTRACT:
A sealed collet having improved radial flexibility is provided for facilitating removal from a locknut of a chuck assembly. The sealed collet includes a collet body formed from a tubular configuration of elongated gripping fingers separated by elongated slots which render the body radially resilient in response to pressure applied by a locknut. The slots are filled with a bonding agent, which may be a silicon rubber compound, for preventing dirt and debris from entering the collet slots and for preventing pressurized coolant intended to flow through a bore in a tool shank from flowing through the walls of the collet body. To increase the radial compressibility of the collet, agent-free gaps are provided in the slots immediately behind a distal portion of the collet body. In the preferred embodiment, the length of the agent-free gap is between 20% and 30% of the overall length of its respective slot. The location of the gaps immediately behind the distal end of the collet body advantageously increases the radial compressibility of the collet while allowing the bonding agent in the slots to continue to prevent debris from entering the collet.

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