TOOL FOR MACHINING AND METHOD FOR ORIENTING CUTTING INSERTS IN SUCH A TOOL

• US 20120321399A1
• Filed: 01/27/2011
• Published: 12/20/2012
• Est. Priority Date: 02/16/2010
• Status: Active Grant

• Current Assignee: Kennametal Incorporated
• Original Assignee: Kennametal Incorporated
• Inventors: Wuerfels, Andreas, Kammermeier, Dirk
• Granted Patent: US 8,894,331 B2
• Time in Patent Office: Days
• US Class Current: 407/69
• CPC Class Codes: B23C 2245/08 Setting gauges
• CPC Class Codes: B23C 2260/84 Springs
• CPC Class Codes: B23C 2270/025 Hydraulics
• CPC Class Codes: B23C 5/2226 for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
• CPC Class Codes: B23C 5/2295 the cutting elements being clamped simultaneously
• CPC Class Codes: B23C 5/24 adjustable
• CPC Class Codes: Y10T 29/49895 Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
• CPC Class Codes: Y10T 407/2206 Simultaneously usable
• CPC Class Codes: Y10T 407/225 Resiliently biased tool clamping jaw
• CPC Class Codes: Y10T 407/2286 Resiliently biased clamp jaw

Abstract

A tool includes a parent body (12) and at least two cutting inserts (14) fastened directly or indirectly to the parent body (12). A central clamping device (30) is configured to clamp the cutting inserts (14) in an oriented position relative to the parent body (12). An assembly includes the tool (10) and a jig (32), which can accommodate the tool (10) in such a way that the cutting insert (14) is located in a desired position on the tool (10) and can be clamped in the desired position by actuating the clamping device (30). A method for fastening at least one cutting insert (14) to the parent body (12) includes fitting the parent body (12) with the cutting insert (14); arranging the parent body (12) in a jig (32); bringing the cutting insert (14) into a desired position; and clamping the cutting insert (14) in the desired position.

Claims

1. A tool for machining, comprising a parent body and at least two cutting inserts which are fastened directly or indirectly to the parent body, wherein a central clamping device is provided for clamping the cutting inserts in an oriented position relative to the parent body.

2. The tool as claimed in claim 1, further comprising a plurality of receptacles on the parent body for arranging a respective cutting insert.

3. The tool as claimed in claim 2, wherein the cutting insert is attached to a holder, which is arranged in turn in corresponding receptacle.

4. The tool as claimed in claim 3, wherein the cutting insert is displaceable in the corresponding receptacle in the axial and/or radial direction when the clamping device is not actuated.

5. The tool as claimed in claim 2, wherein the receptacle is a pocket having a base surface, a top surface and at least one side surface (24, 26).

6. The tool as claimed in claim 5, wherein the cutting insert, when the clamping device is not actuated, can be rotated about an axis which is perpendicular to the base surface of the receptacle.

7. The tool as claimed in claim 2, wherein the clamping device clamps the cutting insert against a reference surface.

8. The tool as claimed in claim 7, wherein the reference surface is the base surface, the top surface and/or a side surface of the receptacle.

9. The tool as claimed in claim 2, further comprising pressure means for pushing the cutting insert out of the receptacle.

10. The tool as claimed in claim 9, wherein the pressure means comprises at least one spring.

11. The tool as claimed in claim 10, wherein the pressure means comprises a plurality of elastomer elements.

12. The tool as claimed in claim 10, wherein the pressure means comprises leaf springs.

13. The tool as claimed in claim 1, wherein the clamping device is a mechanical clamping device.

14. The tool as claimed in claim 13, wherein the clamping device has a clamping element which can be adjusted axially with a thread.

15. The tool as claimed in claim 13, wherein the clamping device has a clamping wedge.

16. The tool as claimed in claim 11, wherein the clamping device is a hydraulic clamping device.

17. The tool as claimed in claim 16, wherein the clamping device has an expansion chamber.

18. An assembly comprising a tool for machining and a jig, wherein the tool has a parent body with at least one cutting insert which can be fastened directly or indirectly to the parent body, and at least one clamping device, by means of which the cutting inserts can be clamped in an oriented position relative to the parent body, wherein the jig can accommodate the tool in such a way that the cutting insert is located in a desired position on the tool and can be clamped in the desired position by actuating the clamping device.

19. The assembly as claimed in claim 18, wherein the jig is provided with holding means for holding the cutting insert in its desired position.

20. The assembly as claimed in claim 18, wherein the clamping device is a clamping device with which more than one cutting insert can be clamped centrally.

21. The assembly as claimed in claim 20, wherein the clamping device is a central clamping device with which all the cutting inserts can be clamped simultaneously.

22. A method for fastening cutting inserts to a parent body of a tool for machining, comprising the following steps:

fitting the parent body with at least one cutting insert;

arranging the parent body in a jig, the jig bringing the cutting insert into a desired position;

an

clamping the cutting insert in the desired position on the parent body.