Device and method for partial decoating and/or machining of material from a workpiece

Patent metadata

Field	Value
Publication number	US-9643268-B2
Application number	US-201514628629-A
Country	US
Kind code	B2
Filing date	Feb 23, 2015
Priority date	Feb 24, 2014
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

The present invention relates to a device for partial decoating and/or machining removal of a steel sheet coated with a metal coating and/or provided with a parasitic layer, wherein the device has a machining tool in the form of a scraping roller and wherein the scraping roller comprises a cutting edge for scraping the metal coating and/or parasitic layer off the steel-sheet surface, and wherein furthermore the scraping roller is rotatable about a rotation axis perpendicular to a main plane of extent of the steel sheet, the scraping roller has a circumferential face which is concentric with the rotation axis and in which at least one circumferential groove is formed, the groove has two lateral groove boundary faces that originate from the groove bottom face, wherein at least one of the two groove boundary faces has the cutting edge and the device is configured such that during decoating and/or machining removal, the at least one cutting edge scrapes over the steel-sheet edge in a manner parallel to the main plane of extent of the steel sheet.

First claim

What is claimed is:

1. A device for partial decoating and/or machining removal of a steel sheet coated with a metal coating and/or provided with a parasitic layer, the device comprising a machining tool in the form of a scraping roller, wherein the scraping roller comprises cutting edges configured to scrape the metal coating and/or parasitic layer off surfaces of the steel sheet, wherein the scraping roller is rotatable about a rotation axis that is perpendicular to a main surface plane of the steel sheet, wherein the scraping roller comprises a circumferential face that is concentric with the rotation axis and in which at least one circumferential groove is formed, wherein the at least one circumferential groove includes two lateral groove boundary faces that originate from a groove bottom face, wherein each of the two lateral groove boundary faces includes one of the cutting edges, wherein during decoating and/or machining removal the cutting edges are configured over a steel-sheet edge in a manner parallel to the main surface plane of the steel sheet for scraping both sides of the steel sheet.

2. The device of claim 1 , wherein the scraping roller is formed in one piece or has at least two separate roller elements that are spaced apart by a spacer in order to form the at least one circumferential groove.

3. The device of claim 2 , wherein the spacer comprises a spacer disc having a defined thickness parallel to the rotation axis, or wherein the spacer is configured to be adjustable mechanically, electrically, hydraulically or pneumatically in terms of its thickness parallel to the rotation axis.

4. The device of claim 1 , wherein the groove bottom face is concentric with the rotation axis, and the device is configured such that during decoating and/or machining removal, the steel-sheet edge of the steel sheet projects into the at least one circumferential groove and the scraping roller runs with the groove bottom face on an end side of the steel-sheet edge.

5. The device of claim 1 further comprising a shoulder burr removal disposed between at least one of the cutting edges and the circumferential face.

6. The device of claim 1 , wherein at least one of
the scraping roller has a burr-removal groove that is offset with respect to the at least one circumferential groove in a manner parallel to the rotation axis, a clear width of said burr-removal groove parallel to the rotation axis being greater than that of the at least one circumferential groove, or
the device has a burr-removal device trailing the scraping roller.

7. The device of claim 1 , wherein the scraping roller has a plurality of grooves and/or burr-removal grooves which are offset with respect to one another in a manner parallel to the rotation axis and are intended for different steel-sheet thicknesses.

8. A method for the partial decoating and/or machining of a steel sheet coated with a metal coating and/or provided with a parasitic layer, the method comprising:
receiving the steel sheet to be at least partially decoated and/or machined;
moving a scraping roller along a contour of the steel sheet;
scraping at least one of the metal coating or parasitic layer off both sides of the steel sheet with cutting edges of the scraping roller; and
while scraping, rotating the scraping roller about a rotation axis perpendicular to a main plane of extent of the steel sheet.

9. The method of claim 8 , wherein a steel-sheet edge of the steel sheet is moved through a groove in the scraping roller, said groove being formed in a circumferential face of the scraping roller, said circumferential face being concentric with the rotation axis.

10. The method of claim 9 , wherein the scraping roller is moved relative to the steel sheet such that a groove bottom face of the groove of the scraping roller runs on an end side of the steel-sheet edge, said groove bottom face being concentric with the rotation axis.

11. The method of claim 10 , wherein the scraping roller is moved relative to the steel sheet such that the cutting edges, which are formed on a lateral groove boundary faces originating from the groove bottom face, scrape over the steel-sheet edge in a manner parallel to the main plane of extent of the steel sheet.

12. The method of claim 9 , wherein the groove is formed between two roller elements of the scraping roller and spacing between the two roller elements parallel to the rotation axis is set by way of a spacer.

13. The method of claim 9 , wherein at least one of
scraped-off coating remnants are removed by a burr-removal device trailing the scraping roller and/or by a shoulder for burr removal that is formed between at least one of the cutting edges and the circumferential face of the scraping roller, or
the steel-sheet edge is moved through a burr-removal groove that is offset with respect to the groove in a parallel manner along the rotation axis, said burr-removal groove being formed in the circumferential face of the scraping roller.

14. The device of claim 1 configured such that during decoating and/or machining removal the steel-sheet edge of the steel sheet projects into the at least one circumferential groove and the scraping roller runs with the groove bottom face on an end side of the steel-sheet edge in a slip-free manner with respect to the steel-sheet edge.

15. The method of claim 9 wherein moving the scraping roller along the contour of the steel sheet comprises moving the scraping roller relative to the steel sheet such that a groove bottom face of the groove of the scraping roller runs on an end side of the steel-sheet edge in a slip-free manner with respect to the steel-sheet edge, said groove bottom face being concentric with the rotation axis.

16. The method of claim 9 wherein the groove is formed between two roller elements of the scraping roller, wherein spacing parallel to the rotation axis between the two roller elements is set mechanically, electrically, hydraulically, or pneumatically by way of a spacer.

17. The device of claim 1 further comprising a burr-removal device trailing the scraping roller, wherein the burr-removal device comprises a deburring knife.

18. The method of claim 10 wherein moving the scraping roller along the contour of the steel sheet comprises moving the scraping roller relative to the steel sheet such that the cutting edges formed on lateral groove boundary faces extending from the groove bottom face scrape over the steel-sheet edge in a manner parallel to the main plane of extent of the steel sheet.

19. The device of claim 1 wherein the cutting edges are angled towards one another and are closest to one another at the circumferential face.

20. A device for partial decoating and/or machining removal of a steel sheet coated with a metal coating and/or provided with a parasitic layer, the device comprising a scraping roller that comprises a cutting edge configured to scrape the metal coating and/or parasitic layer off a surface of the steel sheet, wherein the scraping roller is rotatable about a rotation axis that is perpendicular to a main surface plane of the steel sheet, wherein the scraping roller comprises a circumferential face that is concentric with the rotation axis and in which a circumferential groove is formed, wherein the circumferential groove includes two lateral groove boundary faces that originate from a groove bottom face, wherein the cutting edge is formed by an acute angle between the circumferential face and at least one of the two lateral groove boundary faces, wherein during decoating and/or m

Assignees

• Flehmig Thomas
• Scheuvens Dieter
• Hömig Lothar
• Thyssenkrupp Steel Europe Ag
• Thyssenkrupp Ag

Inventors

• Flehmig Thomas
• Scheuvens Dieter
• Hömig Lothar

Classifications

• B23K2101/185

  Tailored blanks · CPC title

• B23K2101/34

  Coated articles {; Surface treated articles} · CPC title

• Y10T409/50082

  Process · CPC title

• Y10T409/50246

  Means for trimming edge [e.g., chamfering, scarfing, etc.] · CPC title

• B23K31/02

  relating to soldering or welding · CPC title