Patent ID: 8449227
Filing Date: 2013-05-28
Classification: B23B,B23C,Y10T

Abstract:
1. A rotatable tool for chip removing machining, comprising: a basic body having front and rear ends between which a first center axis (C a loose top that includes front and rear ends between which a second center axis (C the front end of the basic body including a jaw which is delimited by two torque-transferring drivers and an intermediate bottom in which a rear coupling part of the loose top is receivable, and a center hole that mouths in the intermediate bottom and has a hole wall which extends axially inside the basic body and in which a threaded hole being concentric with a third center axis (C the coupling part of the loose top including a pair of axial contact surfaces which cooperate with a pair of axial support surfaces on the drivers of the basic body for the transfer of positive axial forces between the coupling part and the drivers, the coupling part of the loose top including a pair of side contact surfaces which cooperate with a pair of side support surfaces on the drivers of the basic body for the transfer of torque and negative axial forces between the coupling part and the drivers, wherein the pair of side contact surfaces define two laterally projecting male members arranged to engage two corresponding seats defined by the pair of side support surfaces of the drivers in an axially locking position, and the pin of the loose top includes a surface for turning the pin and the loose top by cooperation with the screw.