Method for incrementally forming

Patent metadata

Field	Value
Publication number	US-11623262-B2
Application number	US-201817257933-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jul 6, 2018
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A method for incrementally forming includes: preparing a tool T disposed on one side of a metal plate W, a fixing jig 1 to hold a periphery of the metal plate W, and a template P1 including a molded edge E that follows at least a part of a contour of a part to be processed F; arranging the template P1 on the other side of the metal plate W; holding the periphery of the metal plate W together with the template P1 by the fixing jig 1 to fix the metal plate W and the template P1; and moving the tool T while pressing the tool T against the metal plate W, to incrementally form the part to be processed F having a three-dimensional shape of the metal plate W.The method enables to form the part to be processed F in high precision with no use of a molding die and thus, is effective in bringing about reducing cost of equipment and manufacturing.

First claim

The invention claimed is:

1. A method for incrementally forming, from a metal plate, a part having a three-dimensional shape with an outer contour by using a tool disposed on a first surface of the metal plate, the method comprising:
holding, using a fixing jig:
(i) a periphery of the metal plate,
(ii) a template including a molded edge that follows a portion of the outer contour of the three-dimensional shape, wherein the fixing jig has a first side separated from the outer contour of the three-dimensional shape by a first distance, and a second side separated from the outer contour of the three-dimensional shape by a second distance, the first distance being greater than the second distance, and
(iii) a spacer, wherein:
the template is located on a second surface of the metal plate opposite the first surface, in a region extending from the first side of the fixing jig to the outer contour of the three dimensional shape, and
the spacer is located in a region of the second side of the fixing jig where the template is absent; and

moving the tool while pressing the tool against the first surface of the metal plate to incrementally form the part having the three-dimensional shape.

2. The method for incrementally forming according to claim 1 , wherein the template has a rounded shape at a corner portion of the template with which the metal plate is held in contact.

3. The method for incrementally forming according to claim 2 , using a second template, the second template including a molded edge having a same shape as a shape of the molded edge of the template and arranged on the first surface of the metal plate, to incrementally form the part having the three-dimensional shape.

4. The method for incrementally forming according to claim 1 , using a second template, the second template including a molded edge having a same shape as a shape of the molded edge of the template and arranged on the first surface of the metal plate, to incrementally form the part having the three-dimensional shape.

5. The method for incrementally forming according to claim 1 , using a second template, the second template including a molded edge having a same shape as a shape of the molded edge of the template and arranged on the first surface of the metal plate, to incrementally form the part having the three-dimensional shape.

6. The method for incrementally forming according to claim 1 , using a second template, the second template including a molded edge having a same shape as a shape of the molded edge of the template and arranged on the first surface of the metal plate, to incrementally form the part having the three-dimensional shape.

7. A method for incrementally forming, from a metal plate, a part having a three-dimensional shape with an outer contour by using a tool disposed on a first surface of the metal plate, the method comprising,
holding, using a fixing jig:
a periphery of the metal plate,
(ii) a template including a molded edge that follows a portion of the contour of the three-dimensional shape, and
(iii) a spacer; and

moving the tool along a path while pressing the tool against the first surface of the metal plate to incrementally form the part having the three-dimensional shape, the path includes a region at which the path changes from a first direction to a second direction, wherein:
the template is located at the region at which the path changes from the first direction to the second direction, and
the spacer is located in a region of the second side of the fixing jig where the template is absent.

8. The method for incrementally forming according to claim 7 , wherein the template has a rounded shape at a corner portion of the template with which the metal plate is held in contact.

9. A method for incrementally forming, from a metal plate, a part having a three-dimensional shape with an outer contour by using a tool disposed on a first surface of the metal plate, the method comprising,
holding, using a fixing jig:
i) a periphery of the metal plate,
(ii) a template including a molded edge that follows a portion of the outer contour of the three-dimensional shape, wherein the fixing jig has a first side extending along a first portion of the three-dimensional shape having a first forming angle, and a second side extending along a second portion of the three-dimensional shape having a second forming angle, wherein the first and second forming angle are angles to be formed between a surface of the metal plate before the forming and a surface of the three-dimensional shape of the respective first and second portions, and wherein the first forming angle is less than the second forming angle, and
(iii) a spacer, wherein:
the template is located on a second surface of the metal plate opposite the first surface, in a region extending from the first side of the fixing jig to the first portion of the three dimensional shape, and
the spacer is located in a region of the second side of the fixing jig where the template is absent;

moving the tool while pressing the tool against the first surface of the metal plate to incrementally form the part having the three-dimensional shape.

10. The method for incrementally forming according to claim 9 , wherein the template has a rounded shape at a corner portion of the template with which the metal plate is held in contact.

Assignees

• Nissan Motor

Inventors

• Uchiyama Noriko
• Miwa Hirotaka
• Nakagawa Shigeyuki
• Murakami Ryou

Classifications

• B21D22/18 Primary

  using tools guided to produce the required profile · CPC title

• 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