Patent ID: 8956090
Filing Date: 2015-02-17
Classification: B23B,B23C,Y10S,Y10T

Abstract:
1. A tool holder for a cutting element, comprising: a tool base body; an insert seat for mounting a cutting element to the tool base body, the insert seat including a supporting face, at least one lateral bearing wall, and a rear bearing wall formed by a resiliently-held web; two front cutting elements configured to enlarge a diameter of a hole to a desired thickness, and two rear cutting elements configured to further enlarge the diameter of the hole formed by the two front cutting inserts; an expanding slot including a longitudinal leg and a transverse leg extending substantially perpendicular to the longitudinal leg to connect the longitudinal leg with the insert seat; and an adjusting screw for adjusting a radial position of the cutting element, the adjusting screw capable of being received in a tapped hole, the tapped hole intersecting the expanding slot such that rotation of the adjusting screw in the tapped hole causes the resiliently-held web to move radially outward, thereby effecting fine adjustment of the cutting element in a radial direction.