公开(公告)号：US10576552B2

公开(公告)日：2020-03-03

申请号：US15916903

申请日：2018-03-09

Applicant: Kennametal Inc.

Inventor： Horst Manfred Jäger ,  Michael Schuffenhauer ,  Jüergen Schwäegerl ,  Berthold Heinrich Zeug

IPC: B23B51/02

Abstract: The rotary tool has two coupling parts, namely a carrier and a cutting head having a front end face. The carrier has a pin seat into which a coupling pin of the cutting head is inserted. Effective stop faces are formed on the pin seat and on the coupling pin in the axial direction for axial pull-out protection. For a design that is as simple as possible, in particular in terms of grinding, a side face adjoins a respective stop face of the coupling pin and, when viewed in the axial direction, freely extends to the end face. In particular, the side face forms a torque face. For reliable clamping attachment, in particular with larger nominal diameters (D), a separating slot is made in the carrier and a clamping screw is inserted into it, both of which serve to fix the cutting head in the pin seat.

公开(公告)号：US20170266734A1

公开(公告)日：2017-09-21

申请号：US15460908

申请日：2017-03-16

Applicant: Kennametal Inc.

Inventor： Michael Schuffenhauer

IPC: B23B29/02

CPC classification number: B23B29/03 ,  B23B2240/24 ,  B23B2250/12 ,  B23B2260/124 ,  B23D77/02 ,  B23D2277/02

Abstract: A drilling tool with: a shaft; a seat at one end of the shaft; a drill bit, which is arranged on the seat; and a clamping section, which is provided on the shaft and can interact with the drill bit. Also provided is a tensioning screw, which is screwed into the shaft and comprises an expanding section as well as a contact section. The expanding section interacts with the clamping section, and the contact section interacts with the drill bit.