Patent ID: 7758286
Filing Date: 2010-07-20
Classification: B23B,Y10T

Abstract:
1. An insert-indexable tool comprising: a holder; and a head member having an insert mount seat by which an insert having a cutting edge is to be clamped, and mounted on a distal portion of the holder, wherein the head member includes a first jaw having a clamping face and a second jaw having a base face, the clamping face and the base face opposing each other in a clamping direction so as to constitute the insert mount seat, a clamping screw having a shaft portion and a pressing portion that is a plane perpendicularly intersecting an axis of the shaft portion is disposed in the distal portion of the holder in such a manner that, in a view facing toward the distal portion of the holder along an extending direction of the insert mount seat, the clamping screw is inclined with respect to the extending direction of the insert mount seat and extends gradually toward an inside of the holder while extending from the first jaw toward the second jaw, the holder is provided with a threaded hole having an axis and engageable with the shaft portion of the clamping screw, the first jaw is provided with a spot facing having a center axis and a bottom face perpendicularly intersecting the center axis, and accommodating the pressing portion of the clamping screw, and the center axis of the spot facing and the axis of threaded hole obliquely intersect each other in a view facing toward the distal portion of the holder along the extending direction of the insert mount seat in such a manner that an acute angle formed between the clamping direction and the axis of the threaded hole is greater than an acute angle formed between the clamping direction and the center axis of the spot facing.