Method and tool for producing a surface of predetermined roughness

Patent metadata

Field	Value
Publication number	US-9643265-B2
Application number	US-36252809-A
Country	US
Kind code	B2
Filing date	Jan 30, 2009
Priority date	Aug 5, 2008
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

First claim

What is claimed is:

1. A method for producing a surface that has a surface structure of predetermined geometry, that is suitable for application of material by thermal spraying and is in the form of a geometrically determined groove structure, the method comprising:
forming at least a first groove having a final cross-sectional contour in a surface of a structure by sequentially contacting locations on the surface of the structure with at least a first cutting tool and a second cutting tool of a cutting plate, the cutting plate is a single unitary piece of material comprising at least the first cutting tool and the second cutting tool, the first cutting tool is a first projection, the second cutting tool is a second projection, the first projection is separate from the second projection, the first projection is spaced from the second projection, said contacting locations on the surface of the structure with the first cutting tool causing material to be removed from the structure, the first groove having a first cross-sectional contour at each said location after said contacting the structure with the first cutting tool, said contacting the structure with the second cutting tool causing material to be removed from the structure, the first groove having a second cross-sectional contour at each said location after said contacting the structure with the second cutting tool,
the final cross-sectional contour comprising a portion of the first cross-sectional contour and a portion of the second cross-sectional contour,
said forming at least the first groove is realized in one working step that comprises different cutting and plastic deformation operations.

2. A method as recited in claim 1 , wherein the surface is cylindrical and wherein the locations on the surface of the structure comprise at least one coil-shaped groove in the cylindrical surface.

3. A method as recited in claim 1 , wherein said contacting the structure with the first cutting tool of the cutting plate is divided into partial steps.

4. A method as recited in claim 1 , wherein said method comprises material removal by cutting, and during cutting the surface is roughened and a microconfiguration in the form of at least one of the elements selected from the group consisting of microstructuring, microundercut, and microroughness is produced.

5. A method as recited in claim 1 , wherein said cutting plate further comprises a cleaning tooth.

6. A method as recited in claim 1 , wherein said forming at least the first groove is done with minimal quantity lubrication (MQL), or lubrication with a cooling/lubricating material selected from the group consisting of an oil-containing cooling/lubricating material, solid material-containing cooling/lubricating material, and water-containing cooling/lubricating material.

7. A method as recited in claim 1 , wherein said contacting the structure with the second cutting tool of the cutting plate increases a bottom width of the first groove.

8. A method as recited in claim 1 , wherein said contacting the structure with the second cutting tool of the cutting plate changes a shape of the first groove.

9. A method as recited in claim 1 , wherein the second cutting tool of the cutting plate has a larger depth than the first cutting tool of the cutting plate.

10. A method as recited in claim 1 , wherein the first groove has a substantially uniform geometry.

11. A method as recited in claim 1 , wherein the surface is cylindrical and wherein the first groove has a substantially uniform geometry.

12. A method as recited in claim 1 , wherein the surface is cylindrical and wherein the first groove extends at least one revolution about an axis of the cylindrical surface.

13. A method as recited in claim 1 , wherein the surface comprises a plurality of regions, at least some of which substantially coincide with a cylindrical shape.

14. A method as recited in claim 1 , wherein the surface is substantially cylindrical and the first groove is substantially helical.

15. A method as recited in claim 1 , wherein the cutting plate further comprises at least a third portion, a fourth portion and a fifth portion that contact the structure.

16. A method as recited in claim 1 , wherein the method further comprises:
rotating at least one of the surface and the cutting plate such that the surface rotates, relative to the first cutting tool of the cutting plate and the second cutting tool of the cutting plate, about a first axis, and
moving at least one of the surface and the cutting plate, such that the surface moves, relative to the first cutting tool of the cutting plate and the second cutting tool of the cutting plate, along the first axis.

17. A method as recited in claim 1 , wherein:
the first cutting tool of the cutting plate is spaced from the second cutting tool of the cutting plate by a first pitch,
the method comprises rotating at least one of the surface and the cutting plate such that the surface rotates, relative to the first cutting tool of the cutting plate and the second cutting tool of the cutting plate, about a first axis while moving at least one of (1) the surface and (2) the cutting plate along the first axis, the moving resulting in changing the relative position of the surface relative to the cutting plate along the first axis, and
the rate of changing the relative position along the first axis of the surface relative to the cutting plate is equal to a product of: (1) the rate of rotating the surface relative to the cutting plate about the first axis times (2) the first pitch.

18. A method as recited in claim 17 , wherein:
the method further comprises contacting the structure with at least a first displacement structure, the first displacement structure spaced from the second cutting tool of the cutting plate by a distance that differs from the first pitch.

19. A method as recited in claim 18 , wherein the second cutting tool of the cutting plate contacts a first portion of the first groove before the first displacement structure displaces the first portion of the first groove.

20. A method as recited in claim 1 , wherein:
the cutting plate further comprises a third cutting tool,
the first cutting tool of the cutting plate is spaced from the second cutting tool of the cutting plate by a first pitch,
the third cutting tool of the cutting plate is spaced from the first cutting tool of the cutting plate by a multiple of the first pitch.

21. A method for producing a surface that has a surface structure of predetermined geometry, that is suitable for application of material by thermal spraying and is in the form of a geometrically determined groove structure, the method comprising:
introducing a first groove into a surface of a structure, said surface cylindrical, by:
removing material from the structure by contacting the structure with at least a first cutting tool, and
plastically deforming part of the structure by applying blunt force by contacting the surface of the structure with at least a first displacement structure,
the first groove extending at least one revolution about an axis of the cylindrical surface.

22. A method as recited in claim 21 , wherein the first groove is at least one coil-shaped groove in the cylindrical surface.

23. A method as recited in claim 21 , wherein said introducing the first groove is divided into partial steps.

24. A method as recited in claim 21 , wherein said introducing the first groove is realized in

Assignees

• Ast Holger
• Bozkurt Lutfi
• Sommerfeldt Peter
• Reimann Horst
• Gand Bernhard
• Orlamünder Frank
• Guehring Kg
• Martinrea Honsel Germany Gmbh

Inventors

• Ast Holger
• Bozkurt Lutfi
• Sommerfeldt Peter
• Reimann Horst
• Gand Bernhard
• Orlamünder Frank

Classifications

• Y10T83/0304

  Grooving · CPC title

• Y10T409/400175

  Process · CPC title

• B23B2210/027

  Means for adjusting the grooving inserts · CPC title

• C23C4/02

  Pretreatment of the material to be coated, e.g. for coating on selected surface areas · CPC title

• B23B2200/204

  with discontinuous cutting edge · CPC title