Machining tool and cutting head for the machining tool

Patent metadata

Field	Value
Publication number	US-9827619-B2
Application number	US-201113521842-A
Country	US
Kind code	B2
Filing date	Jan 13, 2011
Priority date	Jan 14, 2010
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A machining tool includes a holder and a cutting head which can be screwed into the holder. The cutting head includes a cutting-edge region and a coupling region. The coupling region includes a flat contact area facing the holder, a cylindrical thread carrier with an external thread adjoining the flat contact area, and a clamping cone adjoining the thread carrier. The holder includes a planar counter-contact area disposed adjacent the flat contact area of the coupling region, a cylindrical internal thread adjoining the planar counter-contact area, and a hollow-conical cone contact area next to the internal thread.

First claim

The invention claimed is:

1. A machining tool comprising:
a holder; and
a cutting head which can be screwed into the holder, the cutting head having a cutting edge region and a coupling region,
wherein the coupling region comprises:
a flat contact area facing the holder,
a cylindrical thread carrier with an external thread, the cylindrical thread carrier directly contacting the flat contact area, and
a clamping cone directly contacting the thread carrier;

wherein the holder comprises:
a planar counter-contact area disposed adjacent the flat contact area of the coupling region,
a cylindrical internal thread directly contacting the planar counter-contact area, and
a hollow-conical cone contact area directly contacting the internal thread; and

wherein the clamping cone of the cutting head is adapted to lie against the hollow-conical cone contact area when the cutting head is screwed into the holder to spread the holder apart in the region of the hollow-conical cone contact area.

2. The machining tool of claim 1 wherein the cutting head further comprises a flat collar adjacent the cutting-edge region and having the flat contact area on an end face that is facing away from the cutting-edge region.

3. The machining tool of claim 1 wherein the external thread has an axial length which corresponds at a maximum to half the axial length of the clamping cone.

4. The machining tool of claim 1 wherein the cutting head is formed of hard metal.

5. The machining tool of claim 1 wherein the cutting head comprises a plurality of soldered-on hard-metal cutting edges.

6. The machining tool of claim 1 wherein the tool is formed as a reaming tool with reaming cutting edges, respectively having a fine thread as the external thread on the cutting head and as the internal thread on the holder.

7. The machining tool of claim 1 wherein the tool is formed as a milling tool with milling cutting edges, respectively having a course thread as the external thread on the cutting head and as the internal thread on the holder.

Assignees

• Schuffenhauer Michael
• Xylander Rene
• Kennametal Inc

Inventors

• Schuffenhauer Michael
• Xylander Rene

Classifications

• Y10T407/19

  Rotary cutting tool · CPC title

• B23C5/10 Primary

  Shank-type cutters, i.e. with an integral shaft · CPC title

• B23B31/1107

  for conical parts · CPC title

• Y10T407/1906

  including holder [i.e., head] having seat for inserted tool · CPC title

• Y10T407/1908

  Face or end mill · CPC title