Cutter head and use thereof

• US 9,764,402 B2
• Filed: 06/19/2014
• Issued: 09/19/2017
• Est. Priority Date: 06/19/2013
• Status: Active Grant

• Current Assignee: Klingelnberg AG
• Original Assignee: Klingelnberg AG
• Inventors: Brieden, Christian, Zagromski, Martin, Heckes, Leif, Gsell, Jrgen
• Primary Examiner(s): Addisu, Sara
• Application Number:
  US14/308,902
• Publication Number:
  US 20140377022A1
• Time in Patent Office: 1,188 Days
• Field of Search: 407 11
• CPC Class Codes: B23C 2270/025 Hydraulics
• CPC Class Codes: B23C 5/2239 with cutting inserts clamped by a clamping member acting almost perpendicular on the cutting face
• CPC Class Codes: B23C 5/2295 the cutting elements being clamped simultaneously
• CPC Class Codes: B23F 21/146 in exchangeable arrangement
• CPC Class Codes: B23F 21/226 in exchangeable arrangement
• CPC Class Codes: B23F 23/1212 using fluid pressure means
• CPC Class Codes: B23F 9/10 with a face-mill
• CPC Class Codes: Y10T 407/2266 Holder adapted for tools of different shape

Abstract

Cutter head for accommodating multiple cutters, wherein the cutter head has a separate receptacle opening for each of the cutters, and wherein the cutter head includes clamping means for clamping the cutters in the receptacle openings. A cavity is implemented in the cutter head in the region of at least one of the receptacle openings, which is separated by a thin wall or layer from this receptacle opening, and the cavity can be filled with a fluid and a pressure can be applied thereto.

Claims

1. A cutter head configured to accommodate multiple cutters, the cutter head comprising:

at least one receptacle opening configured to receive a cutter;

a clamping means for mechanical clamping of the cutter in the at least one receptacle opening; and

a cavity in the cutter head adjacent to the at least one receptacle opening and separated therefrom by a thin wall or layer, and configured to be filled with a fluid and pressure applied thereto,

wherein the thin wall or layer is deformable by a fluid pressure of a fluid in the cavity so as to provide for a hydraulic clamping applied directly to the cutter and independent of the clamping means.

2. The cutter head according to claim 1, wherein the cavity extends in material of the cutter head either (i) parallel to a longitudinal axis of the at least one receptacle opening, (ii) transversely to the longitudinal axis, or (iii) diagonally to the longitudinal axis.

3. The cutter head according to claim 1, wherein the cutter head comprises a main body having an end face, and the at least one receptacle opening extends from the end face and into the main body.

4. The cutter head according to claim 3, wherein the cavity is accessible from the end face, and extends perpendicularly to or diagonally to the end face into the main body.

5. The cutter head according to claim 3, wherein the main body defines a circumferential surface, and the cavity is accessible from the circumferential surface and extends parallel to the end face or diagonally into the main body.

6. The cutter head according to claim 1, wherein the thin wall or layer is located between a section of the at least one receptacle opening and a section of the cavity.

7. The cutter head according to claim 1, wherein one cavity is provided per receptacle opening.

8. The cutter head according to claim 1, wherein the cavity is associated with multiple of said at least one receptacle opening.

9. The cutter head according to claim 8, wherein the cavity is separated from each of said multiple receptacle openings by a thin wall or layer.

10. The cutter head according to claim 1, further comprising at least one closure means configured to close the cavity.

11. The cutter head according to claim 10, wherein the closure means comprises a threaded pin and at least one sealing group or sealing unit.

12. The cutter head according to claim 11, wherein the at least one sealing group or sealing unit comprises a plug configured to permit supply and/or removal of the fluid through the plug.

13. A method comprising:

using a cutter head that is configured to accommodate multiple cutters and has at least one receptacle opening configured to receive a cutter, a clamping means for mechanical clamping of the cutter in the at least receptacle opening, and a cavity in the cutter head adjacent to the at least one receptacle opening and separated therefrom by a thin wall or layer, wherein the cavity is configured to be filled with a fluid and pressure applied thereto, the thin wall or layer is deformable by a fluid pressure of a fluid in the cavity so as to provide for a hydraulic clamping applied directly to the cutter and independent of the clamping means, the cavity is filled with a fluid; and

wherein the using step comprises;

adjusting a pressure of the fluid in the cavity prior to machining a workpiece, so as to deform the thin wall by the fluid pressure of said fluid in the cavity.

14. The method according to claim 13, wherein the step of adjusting the pressure comprises manually adjusting the pressure using a tool.

15. The method according to claim 13, wherein the step of adjusting the pressure is performed by an external pre-definition of a hydraulic pressure.