Patent ID: 6506000
Filing Date: 2003-01-14
Classification: A61B,B23C,Y10T

Abstract:
A milling cutter and cutter holder, wherein the cutter (17) is a part of flat annular shape having at least two fixing holes (18) located in a pattern and having at least one locking hole (19), and wherein the cutter holder has at least two fixed fingers (7) axially parallel to a rotational axis of the cutter holder and located in a pattern, that matches the pattern of the fixing holes in the cutter so as to engage therein, these fingers having a head (14) of a maximum transverse dimension smaller than a minimum diameter of the fixing holes (18), a groove (15) under this head, of a width corresponding to the thickness of the annular part of the cutter, and, under the groove, a minimum transverse dimension larger than a maximum diameter of the fixing holes and, further, at least one locking finger (10) parallel to the fixed fingers (7) and constrained so as to move along an axis parallel to the fixed fingers, angularly offset an approximately identical amount as the fixing holes are from the locking holes on the cutter but with an angular shift preferably in a direction which is the opposite to the direction of rotation of the cutter, so that once the cutter has been engaged over the fixed fingers and engaged in the grooves, in the opposite direction to the direction of rotation of the cutter, introduction of the moving finger into the locking hole locks the cutter in the grooves.