Hybrid torque tube

Patent metadata

Field	Value
Publication number	US-10677300-B2
Application number	US-201815887754-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 2, 2018
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A hybrid torque tube for a brake assembly may comprise a tube portion having a centerline axis, and a conical back-leg portion extending from the tube portion. A stator spline may be formed on a radially outward surface of the tube portion. A foot may be formed on a radially inward surface of the tube portion. The tube portion is formed using a first manufacturing process and at least one of the conical back-leg, stator spline, or foot is formed using additive manufacturing.

First claim

What is claimed is:

1. A method of making a hybrid torque tube for a brake system, comprising:
forming a tube portion having a centerline axis using a first manufacturing process, the first manufacturing process comprising a non-additive manufacturing technique, the non-additive manufacturing technique being at least one of forging, extrusion, casting, machining, stamping, welding, swaging, or subtractive manufacturing, wherein the tube portion is formed using a first metal alloy;
forming a conical back-leg extending from the tube portion in a radially outward angled orientation relative to the centerline axis;
forming a stator spline on a radially outward surface of the tube portion; and
forming a foot extending from a radially inward surface of the tube portion, wherein at least one of the conical back-leg, the stator spline, or the foot is formed on the tube portion using a second manufacturing process different from the first manufacturing process, the second manufacturing process comprising an additive manufacturing technique, wherein at least one of the foot or a portion of the conical back-leg is formed using a second metal alloy different from the first metal alloy.

2. The method of claim 1 , wherein a portion of the stator spline is hollow.

3. The method of claim 1 , wherein a cross-section of the stator spline comprises a lattice structure.

4. The method of claim 1 , wherein the second metal alloy comprises a greater resistance to creep as compared to the first metal alloy.

5. The method of claim 1 , wherein forming the stator spline comprises depositing a base material with a coating located over the base material.

6. A method of making a hybrid torque tube for a brake assembly, comprising:
forming a tube portion having a centerline axis using a first manufacturing process, the first manufacturing process comprising a non-additive manufacturing technique, wherein the tube portion comprises a first material; and
forming a conical back-leg extending from a first end of the tube portion;
forming a flange at a second end of the tube portion opposite the first end of the tube portion;
forming a foot extending from a radially inward surface of the tube portion; and
forming a stator spline on the tube portion, wherein at least one of the conical back-leg, the flange, the foot, or the stator spline is formed on the tube portion using a second manufacturing process, the second manufacturing process comprising an additive manufacturing technique, and wherein at least one of the foot, a portion of the conical back-leg, or the stator spline comprises a second material different from the first material.

7. The method of claim 6 , wherein the first manufacturing process comprises at least one of forging, extrusion, casting, machining, stamping, or subtractive manufacturing.

8. The method of claim 6 , wherein at least one of the flange, the foot, or the stator spline is formed using the second manufacturing process, and wherein the conical back-leg is formed using at least one of forging, extrusion, casting, machining, stamping, subtractive manufacturing, welding, or swaging.

9. The method of claim 6 , wherein forming the stator spline comprises depositing a base material with a coating located over the base material.

10. The method of claim 6 , wherein a portion of the stator spline is hollow.

11. A method of making a hybrid torque tube for a brake system, comprising:
forming a tube portion having a centerline axis using a first manufacturing process, the first manufacturing process comprising a non-additive manufacturing technique;
forming a conical back-leg extending from the tube portion in a radially outward angled orientation relative to the centerline axis;
forming a stator spline on a radially outward surface of the tube portion; and
forming a foot extending from a radially inward surface of the tube portion, wherein at least one of the conical back-leg, the stator spline, or the foot is formed using a second manufacturing process different from the first manufacturing process, the second manufacturing process comprising an additive manufacturing technique, and wherein the tube portion comprises a first material and the foot comprises a second material different from the first material.

12. The method of claim 11 , wherein the first manufacturing process comprises at least one of forging, extrusion, casting, machining, stamping, welding, swaging, or subtractive manufacturing.

13. The method of claim 11 , wherein a portion of the stator spline is hollow.

14. The method of claim 11 , wherein the second material comprises a greater resistance to creep as compared to the first material.

15. The method of claim 11 , wherein a radially extending portion of the foot comprises a material having a greater heat resistance as comparted to a material of an axially extending portion of the foot.

Assignees

• Goodrich Corp

Inventors

• Steele Leslie
• Filburn Thomas P
• Klecka Michael A

Classifications

• B64C25/42

  Arrangement or adaptation of brakes · CPC title

• C22C14/00

  Alloys based on titanium · CPC title

• F16D2065/1392

  Connection elements · CPC title

• F16D2200/0008

  Ferro · CPC title

• F16D2250/0076

  Welding, brazing · CPC title