MACHINING TOOL

Abstract

The present invention relates to a machining tool having a substrate surface made of a hard metal or a ceramic material, said substrate surface containing hard material particles on the basis of carbide and/or nitride and/or oxide that are embedded in a cobalt-containing binder matrix, and the substrate surface being smoothened. The substrate surface of the machining tool can be smoothened by way of a treatment with an ion beam that consists of monomer ions of at least one cation species, the cation species being mono-or poly-charged and being selected from the group consisting of: cations of the main group elements lithium, boron, aluminum, gallium, carbon, silicon, germanium, nitrogen, phosphorus and oxygen; and cations of the transition metals titanium, zirconium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, iron, cobalt, nickel and copper.

Claims

1. A machining tool with a substrate surface made of a hard metal or a ceramic material, wherein: the substrate surface contains hard material particles on the basis of carbide and/or nitride and/or oxide, which are embedded in a cobalt-containing binder matrix, and the substrate surface is smoothed, and smoothing of the substrate surface of the machining tool can be achieved by means of a treatment with an ion beam of monomeric ions of at least one cation species, wherein the cation species is mono-charged or poly-charged and selected from the group consisting of: cations of the main group elements lithium, boron, aluminum, gallium, carbon, silicon, germnanium, nitrogen, phosphorus and oxygen; as well as cations of the transition metals titanium, zirconium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, iron, cobalt, nickel and copper.

2. The tool according to claim 1, wherein the hard particles are selected from the group consisting of: the carbides, carbonitrides and nitrides of the non-radioactive metals of the IV., V., VI. and VII. subgroups of the periodic table of the elements and boron nitride, oxidic hard materials, titanium carbide, titanium nitride, titanium carbonitride, vanadium carbide, niobium carbide, tantalum carbide, chromium carbide, molybdenum carbide, tungsten carbide, manganese carbide, and rhenium carbide, as well as mixtures and mixed phases thereof.

3. The tool according to claim 1, wherein the binder matrix also contains aluminum, chromium, molybdenum and/or nickel.

4. The tool according to claim 2, wherein the binder matrix also contains aluminum, chromium, molybdenum and/or nickel.

5. The tool according to claim 4, wherein the ceramic material is a sintered hard metal of carbide or carbonitride.

6. The tool according to claim 1, wherein the tool is a rotating tool or a stationary tool.

7. The tool according to claim 1, wherein the tool has a monolithic or modular design.

8. The tool according to claim 1, wherein at least one cutting body is provided on a support body and/or at least one guide rail is provided.

9. The tool according to claim 1, wherein the substrate is made of a high-speed tool steel.

10. The tool according to claim 1, wherein the tool comprises at least one functional area that is diamond-coated.

11. The tool according to claim 2, wherein the hard particles are selected from the group consisting of cubic boron nitride, aluminum oxide and chromium oxide.

12. The tool according to claim 6, wherein the tool is a drilling, milling, counterboring, turning, threading, contouring or reaming tool.

13. The tool according to claim 8, wherein the cutting body is an insert.

14. The tool according to claim 13, wherein the cutting body is an indexable insert.

15. The tool according to claim 8, wherein the guide rail is a support rail.

16. The tool according to claim 1, wherein the substrate is made of a steel with the DIN key to steel 1.3343, 1.3243, 1.3344 or 1.3247.

17. The tool according to claim 1, wherein the tool comprises at least one functional area that is diamond-coated by means of

Description

EXAMPLE

[0044] Hard metal drilling tools made of a hard metal with 10% Co by mass and an average WC grain size of 0.6 m (Ghring brand name DK460UF) were in accordance with the invention irradiated with an ion stream of essentially monomeric nitrogen ions for 1.5 h, wherein the ion stream was generated with a voltage of 30 kV at a plasma current of 3 mA and a nitrogen pressure of 110.sup.5 mbar. A commercially available ion generator (ion generator Hardion of the firm Quertech, Caen) was used for generating the ion beam.

[0045] During the ion beam treatment, the tool, which in the described example consists of a twist drill with a diameter of 6.00 mm, was subjected to the nitrogen ion beam at an angle of incidence of 0, i.e. in the longitudinal direction from the drill tip, while rotating about its longitudinal axis. Prior to the treatment, the twist drill complied with manufacturing accuracy ISO h8. After the treatment, measurements according to DIN ISO 286, Part 2, showed a manufacturing accuracy of ISO h7 and partly better.