Methods for stator bar shape tooling

Patent metadata

Field	Value
Publication number	US-10369628-B2
Application number	US-201615355419-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Jul 29, 2010
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

Certain embodiments of the invention may include systems and methods for providing stator bar shape tooling. According to an example embodiment of the invention, a method is provided for shaping an element. The method can include providing at least one constraining surface, wherein the at least one constraining surface is fabricated at least in part by selective laser sintering, and deforming an element with the at least one constraining surface to define at least an external shape of a formed element.

First claim

The claimed invention is:

1. A method for manufacturing stator bar shape tooling, comprising:
fabricating a first constraining surface with a curved element section operable to deform a first portion of an element into a formed element for a stator bar;
fabricating a second constraining surface with another curved element section operable to deform a second portion of the element, wherein the first constraining surface and the second constraining surface are fabricated at least in part by selective laser sintering; and
connecting one or more heaters in thermal communication with the first constraining surface and the second constraining surface, wherein the one or more heaters apply heat to the first constraining surface and the second constraining surface while the first constraining surface and the second constraining surface apply pressure to the element.

2. The method of claim 1 , wherein fabricating the first constraining surface comprises fusing together powdered material by laser scanning cross-sections of the powdered material in a pattern generated from a three dimensional digital representation of the first constraining surface.

3. The method of claim 2 , wherein fusing together powdered material comprises fusing together a material comprising at least one of a metal or a polymer binder.

4. The method of claim 1 , wherein the first constraining surface comprises a press lip surface, wherein a third portion of the element is deformed by constraining the third portion of the element against the press lip surface.

5. A method for manufacturing shape tooling, comprising:
fabricating a first constraining surface with a curved element section operable to deform a first portion of an element into a formed element comprising at least one of a stator bar, a stator coil, a buss bar, or a connection ring;
fabricating a second constraining surface with another curved element section operable to deform a second portion of the element, wherein the first constraining surface and the second constraining surface are fabricated at least in part by selective laser sintering; and
connecting one or more heaters in thermal communication with the first constraining surface and the second constraining surface, wherein the one or more heaters apply heat to the first constraining surface and the second constraining surface while the first constraining surface and the second constraining surface apply pressure to the element.

6. The method of claim 5 , wherein fabricating the first constraining surface comprises fusing together powdered material by laser scanning cross-sections of the powdered material in a pattern generated from a three dimensional digital representation of the first constraining surface.

7. The method of claim 5 , wherein fusing together powdered material comprises fusing together a material comprising at least one of a metal or a polymer binder.

8. The method of claim 5 , wherein fabricating the a first constraining surface comprises fabricating tooling, wherein the tooling is operable for shaping an element into the formed element, wherein the formed element comprises at least one of a stator bar, a stator coil, a buss bar, or a connection ring.

9. The method of claim 5 , wherein the first constraining surface comprises a press lip surface, wherein a third portion of the element is deformed by constraining the third portion of the element against the press lip surface.

Assignees

• Gen Electric

Inventors

• Munholand Caleb James
• Clough Mark Stephen
• Shoemaker Mark Kent
• Wardell David John

Classifications

• B23P15/00 Primary

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title

• B22F10/66

  by mechanical means · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• Y10T29/53257

  Means comprising hand-manipulatable implement · CPC title

• Y10T29/5146

  Common reciprocating support for spaced tools · CPC title