Standard shank and method for directly locating rotating cutting

Details Standard shank and method for directly locating rotating cutting Standard shank and method for directly locating rotating cutting

1992-08-24

1994-01-11

Bishop, Steven C.

Chucks or sockets

Socket type

29447, 403 28, 403273, 403404, 279 431, 279156, 279158, 279 201, 408239R, 409234, B23B 31117, B23B 3120

Patent

active

052774350

ABSTRACT:
A cylindrical standard shank is provided for rotating cutting tools for locating a standard shank in a cylindrical location opening, precisely produced with regard to shape and true-running accuracy, in the work spindles of so-called transfer lines or of, for example, steep-taper adaptors. The cutting tool is, in turn, fixed by a cylindrical press connection in the standard shank serving as an adaptor between the tool shank and standardized location opening. The standard shank has, at the front, a longitudinally slotted clamping sleeve accurately machined on the inside and outside. The clamping sleeve is clamped by an accurately machined shrink collar of shape-memory alloy which is approximately the same length and has at least the same wall thickness, is present in the austenitic structural state at room temperature and in the process is reduced in diameter on account of suitable pretreatment, and bears tightly against the periphery of the clamping sleeve. The shrink collar can be transformed into the martensitic structural state by undercooling and can thereby be widened in diameter, as a result of which the clamping sleeve is relieved and the cutting tool located in the standard shank can be exchanged.

REFERENCES:
patent: 5140739 (1992-08-01), Yamaguchi et al.

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