Method and system for incremental sheet forming of tailored blanks

Patent metadata

Field	Value
Publication number	US-10189072-B2
Application number	US-201514678092-A
Country	US
Kind code	B2
Filing date	Apr 3, 2015
Priority date	Apr 3, 2015
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A method of making a sheet metal component from a tailored blank includes altering an initial blank formed from a first material to form the tailored blank by at least one of (i) coupling additional material to a portion of the first material, and (ii) removing the first material from a portion of the initial blank. The method also includes forming the sheet metal component from the tailored blank by an incremental sheet forming process.

First claim

What is claimed is:

1. A method of making a sheet metal component from a tailored blank, said method comprising:
providing an initial blank formed from a first material and having an initial thickness;
completely separating less than the initial thickness of the first material from a region of the initial blank to form a tailored blank, wherein the complete separation of the first material results in a thinned interior portion of the tailored blank, the thinned interior portion of the tailored blank having a nonzero local thickness that is less than the initial thickness, and wherein the thinned interior portion of the tailored blank is enclosed by portions of the tailored blank that retain the initial thickness; and
forming the sheet metal component from the tailored blank by an incremental sheet forming process.

2. The method of claim 1 , wherein the sheet metal component has a thickness defined between a first surface and a second surface of the sheet metal component, said forming the sheet metal component comprises forming the sheet metal component such that the thickness varies locally at different regions of the sheet metal component.

3. The method of claim 1 , wherein the sheet metal component has a stiffness, said forming the sheet metal component comprises forming the sheet metal component such that the stiffness varies locally at different regions of the sheet metal component.

4. The method of claim 1 , wherein the sheet metal component has a thickness defined between a first surface and a second surface of the sheet metal component, said forming the sheet metal component from the tailored blank comprises forming the sheet metal component having a locally decreased thickness in a region of the sheet metal component corresponding to the thinned interior portion of the tailored blank.

5. The method of claim 4 , wherein the region of the sheet metal component is adjacent a portion of the sheet metal component that has a large slope.

6. The method of claim 1 , wherein said forming the sheet metal component from the tailored blank by the incremental sheet forming process further comprises preventing deformation of the tailored blank at at least one predetermined location.

7. The method of claim 1 , wherein said forming the sheet metal component from the tailored blank by the incremental sheet forming process further comprises applying thermal energy to a deformation zone on the tailored blank.

8. The method of claim 1 , wherein the first material comprises a coating on an outer surface thereof.

9. The method of claim 8 , wherein the coating comprises at least one of a metallic coating, an oxidized compound formed from the first material, an anti-corrosive coating, a dielectric coating, a conductivity-enhancing coating, a friction optimization coating, a wear-reduction coating, a reflective coating, an anti-reflective coating, an absorptive coating, a reactive coating, a color coating, and an aesthetic coating.

10. A method of making a sheet metal component from a tailored blank, said method comprising:
altering an initial blank formed from a first material to form the tailored blank by removing a portion of the first material from at least one first region of the tailored blank; and
forming the sheet metal component from the tailored blank by an incremental sheet forming process,
wherein said removing the portion of the first material from the at least one first region of the tailored blank is performed while the tailored blank is coupled to a system that is used to perform the incremental sheet forming process.

11. A method of making a sheet metal component from a tailored blank, said method comprising:
altering an initial blank formed from a first material to form the tailored blank by coupling a cladding material to the first material to form a cladded portion of the tailored blank;
forming the sheet metal component from the tailored blank by an incremental sheet forming process; and
uncoupling at least a portion of the cladding material from the sheet metal component after at least a portion of the incremental sheet forming process is completed.

12. The method of claim 11 , wherein the sheet metal component has a thickness defined between a first surface and a second surface of the sheet metal component, said coupling the cladding material to the first material to form the cladded portion of the tailored blank comprises locally increasing the thickness of a region of the sheet metal component corresponding to the cladded portion of the tailored blank.

13. The method of claim 11 , wherein said uncoupling at least a portion of the cladding material from the sheet metal component is performed while the tailored blank is coupled to the system that is used to perform the incremental sheet forming process.

14. The method of claim 11 , wherein the cladding material is formed from a material that is other than substantially identical to first material.

15. The method of claim 11 , wherein said forming the sheet metal component from the tailored blank by the incremental sheet forming process further comprises applying thermal energy to a deformation zone on the tailored blank.

16. The method of claim 11 , wherein the first material comprises a coating on an outer surface thereof.

17. A method of making a sheet metal component from a tailored blank, said method comprising:
providing an initial blank formed from a first material and having opposing surfaces separated by a thickness of the initial blank;
coupling a plurality of elongated stiffening members to one of the opposing surfaces of the initial blank to form a tailored blank, wherein the plurality of elongated stiffening members are spaced apart and arranged parallel to each other such that an axis of elongation of each of the elongated stiffening members transversely crosses an axis of the tailored blank, and wherein each of the elongated stiffening members is a wire segment; and
forming the sheet metal component from the tailored blank by an incremental sheet forming process, wherein the incremental sheet forming process includes bending the tailored blank about the axis.

18. The method of claim 17 , wherein said coupling the plurality of elongated stiffening members to form the tailored blank comprises locally increasing a stiffness of the sheet metal component about the axis of the tailored blank.

19. The method of claim 17 , further comprising selecting at least one of a number, an orientation, a cross-sectional shape, and a thickness of the plurality of elongated stiffening members to inhibit a springback characteristic of the sheet metal component.

20. The method of claim 17 , wherein the plurality of elongated stiffening members is formed from a material that is other than substantially identical to first material.

21. The method of claim 17 , wherein said forming the sheet metal component from the tailored blank by the incremental sheet forming process further comprises applying thermal energy to a deformation zone on the tailored blank.

22. The method of claim 17 , wherein the first material comprises a coating on an outer surface thereof.

23. A method of making a sheet metal component from a tailored blank, said method comprising:
providing an initial blank formed from a first material and having opposing surfaces separated by a thickness of the initial blank;
coupling a plurality of elongated stiffening members to one of the opposing surfaces of the initial blank to form a tailored blank,

Assignees

• Boeing Co

Inventors

• Belk John Huntley
• Prakash Om

Classifications

• B21D31/005 Primary

  Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece (B21D22/14 takes precedence) · CPC title

• B21D39/026

  Reinforcing the connection by locally deforming · CPC title

• B21D35/006

  Blanks having varying thickness, e.g. tailored blanks · CPC title

• B21D37/16

  Heating or cooling · CPC title