Patent ID: 8939685
Filing Date: 2015-01-27
Classification: B23C,Y10T

Abstract:
1. A tool comprising: an interchangeable cutting portion; and a holder to which the interchangeable cutting portion is adapted to be replaceably mounted, wherein the interchangeable cutting portion comprises a first part with at least one cutting edge and a second part for connection to the holder, the second part being provided with a conical external abutment surface and an external cylindrical screw thread; and wherein the holder is provided with an internal cylindrical screw thread, to which the external screw thread is removably screwed, and a conical internal abutment surface, the conical external abutment surface and the conical internal abutment surface being mutually engageable for positioning the cutting portion and the holder relative to one another; wherein the holder comprises at least one longitudinal passage for a coolant or lubricant liquid and at least one hole extending from the at least one longitudinal passage to a side surface of the holder.