Toolholder and insert arrangement with a shrink fit coupling

Details Toolholder and insert arrangement with a shrink fit coupling Toolholder and insert arrangement with a shrink fit coupling

2005-03-29

2005-03-29

Howell, Daniel W. (Department: 3722)

Chucks or sockets

Socket type

Friction grip

C279S103000, C408S226000, C408S23900A, C409S234000

Reexamination Certificate

active

06871859

ABSTRACT:
A toolholder and insert arrangement includes an insert having a cutting portion and a shank portion disposed at a base of the cutting portion. The toolholder has a first end attachable to a spindle and a second end having a shank-receiving opening. When the toolholder is at ordinary room temperature, the shank-receiving opening is smaller than the shank portion. Upon heating of the toolholder to a predetermined temperature above the ordinary room temperature and above an ordinary operating temperature, the shank-receiving opening expands to become at least as large as the shank portion. Upon cooling of the toolholder to a temperature below the predetermined temperature and after insertion of the shank portion in the shank-receiving opening, the shank-receiving opening shrinks to generally conform to a shape of the shank portion.

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