Method and tool for producing a surface of predetermined roughness

Patent metadata

Field	Value
Publication number	US-10259059-B2
Application number	US-201314138932-A
Country	US
Kind code	B2
Filing date	Dec 23, 2013
Priority date	Aug 5, 2008
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

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

The invention claimed is:

1. A device, comprising:
a tool; and
a cutting insert comprising a first portion and a second portion, the first portion comprising a base plate mounted to the tool, the second portion comprising cutting teeth that each comprise a proximal end and a distal end, each proximal end of each cutting tooth being attached to the base plate,
the cutting insert mounted on the tool,
the tool configured to rotate the cutting insert relative to a tool axis,
the cutting insert comprising a single unitary piece of material comprising at least a first dovetail cutting tooth and a second dovetail cutting tooth, the first dovetail cutting tooth separate and spaced from the second dovetail cutting tooth along a line that is parallel to the tool axis,
the first dovetail cutting tooth extending away from the tool axis in a first direction, the first direction perpendicular to the tool axis,
the second dovetail cutting tooth extending away from the tool axis in said first direction,
the first dovetail cutting tooth having a first tooth first flank and a first tooth second flank,
an axis of the first dovetail cutting tooth extending between the first tooth first flank and the first tooth second flank,
the axis of the first dovetail cutting tooth perpendicular to the tool axis,
a spacing between the first tooth first flank and the first tooth second flank at a first distance from the tool axis greater than a spacing between the first tooth first flank and the first tooth second flank at a second distance from the tool axis, the first distance from the tool axis greater than the second distance from the tool axis,
the second dovetail cutting tooth having a second tooth first flank and a second tooth second flank,
an axis of the second dovetail cutting tooth extending between the second tooth first flank and the second tooth second flank,
the axis of the second dovetail cutting tooth perpendicular to the tool axis,
the axis of the first dovetail cutting tooth parallel to the axis of the second dovetail cutting tooth,
a spacing between the second tooth first flank and the second tooth second flank at a third distance from the tool axis greater than a spacing between the second tooth first flank and the second tooth second flank at a fourth distance from the tool axis, the third distance from the tool axis greater than the fourth distance from the tool axis.

2. A device as recited in claim 1 , wherein:
the cutting insert further comprises a third projection;
the third projection is a displacement structure which is configured to plastically deform a structure by applying blunt force,
the second dovetail cutting tooth is spaced from the first dovetail cutting tooth by a first pitch,
the third projection is spaced from the second dovetail cutting tooth by a distance that differs from the first pitch, and
the third projection is spaced from the first dovetail cutting tooth by a distance that differs from the first pitch.

3. A device as recited in claim 1 , wherein the cutting insert further comprises at least a third projection,
the third projection is a cutting tooth,
the second dovetail cutting tooth is spaced from the first dovetail cutting tooth by a first pitch, and
the third projection is spaced from the second dovetail cutting tooth by the first pitch.

4. A device as recited in claim 1 , wherein:
the cutting insert further comprises a third projection,
the third projection is a displacement structure, and the third projection is configured to plastically deform a structure by applying blunt force,
the second dovetail cutting tooth is between the first dovetail cutting tooth and the third projection.

5. A device as recited in claim 2 , wherein the cutting insert further comprises at least a fourth projection,
the fourth projection is a cutting tooth,
the fourth projection is spaced from the second dovetail cutting tooth by the first pitch or a multiple of the first pitch.

6. A device as recited in claim 1 , wherein the cutting insert is configured to produce a coil-shaped groove in a cylindrical surface.

7. A device as recited in claim 1 , wherein the cutting insert is configured to produce in a cylindrical surface, (1) a groove, said groove coil-shaped, and (2) an intermediate groove between portions of said groove to produce undercut-like material deformations in said groove.

8. A device as recited in claim 1 , wherein the cutting insert further comprises at least a first cleaning tooth.

9. A device as recited in claim 1 , wherein:
the cutting insert comprises a pre-machining and safety tooth having a first tooth cross section and a first projecting length, a groove pre-machining tooth having a second tooth cross-section that is greater than the first tooth cross-section and a second projecting length that is greater than the first projecting length, and at least one shaping tooth having at least one lateral slanted flank, the lateral slanted flank having a width that is greater than a width of the groove pre-machining tooth.

10. A device as recited in claim 1 , wherein:
the cutting insert further comprises a third cutting tooth,
the third cutting tooth extends away from the tool axis in said first direction,
the third cutting tooth is separate and spaced from the first dovetail cutting tooth and is separate and spaced from the second dovetail cutting tooth along said line that is parallel to the tool axis,
the second dovetail cutting tooth is between the third cutting tooth and the first dovetail cutting tooth,
the third cutting tooth has a third tooth first flank and a first tooth second flank,
no spacing between the third tooth first flank and the third tooth second flank is greater at any distance from the tool axis that is greater than at any other distance from the tool axis.

11. A device as recited in claim 1 , wherein:
the cutting insert further comprises a third dovetail cutting tooth and a fourth dovetail cutting tooth,
the third dovetail cutting tooth and the fourth dovetail cutting tooth each extend away from the tool axis in said first direction,
the second dovetail cutting tooth is between the first dovetail cutting tooth and the third dovetail cutting tooth,
the third dovetail cutting tooth is between the second dovetail cutting tooth and the fourth dovetail cutting tooth,
the third dovetail cutting tooth comprises a third tooth first flank and a third tooth second flank,
the fourth dovetail cutting tooth comprises a fourth tooth first flank and a fourth tooth second flank,
the first tooth first flank is substantially parallel to a first plane, the first plane perpendicular to the tool axis,
at increasing distances from the tool axis, the first tooth second flank diverges from the first plane away from the first tooth first flank,
the second tooth first flank is substantially parallel to the first tooth first flank,
at increasing distances from the tool axis, the second tooth second flank diverges from the first plane away from the second tooth first flank,
at increasing distances from the tool axis, the third tooth first flank diverges from the first plane away from the third tooth second flank,
at increasing distances from the tool axis, the third tooth second flank diverges from the first plane away from the third tooth first flank,
at increasing distances from the tool axis, the fourth tooth first flank diverges from the first plane away from the fourth tooth second flank, and
at increasing distances from the tool axis, the fourth tooth second flank diverges from the first plane away from the fourth tooth first flank.

12. A device as recited in claim 11 , wherein the second tooth

Assignees

• Martinrea Honsel Germany Gmbh
• Guehring Kg

Inventors

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

Classifications

• Y10T407/23

  including tool having plural alternatively usable cutting edges · CPC title

• B23C2200/00

  Details of milling cutting inserts · CPC title

• Y10T409/400175

  Process · CPC title

• B23B29/03428

  by means of an eccentric · CPC title

• B23B2226/125

  cubic [CBN] · CPC title