Hybrid torque bar

Patent metadata

Field	Value
Publication number	US-2019331178-A1
Application number	US-201815962680-A
Country	US
Kind code	A1
Filing date	Apr 25, 2018
Priority date	Apr 25, 2018
Publication date	Oct 31, 2019
Grant date	—

Abstract

A hybrid torque bar for a brake assembly may comprise a base portion, a pin extending from a first end of the base portion, and a rail extending between the first end of the base portion and a second end of the base portion opposite the first end. The base portion may be formed using a first manufacturing process. At least one of the pin or the rail may formed using a second manufacturing process. The second manufacturing process may comprise an additive manufacturing technique.

First claim

What is claimed is:

1 . A hybrid torque bar for a wheel assembly, the hybrid torque bar comprising:
a base portion; a pin extending from a first end of the base portion; and a first rail extending between the first end of the base portion and a second end of the base portion opposite the first end, wherein an interior portion of at least one of the pin or the first rail comprises a first metal alloy, an exterior portion of the at least one of the pin or the first rail comprises a second metal alloy, and an intermediate portion of the at least one of the pin or the first rail extends between the interior portion and the exterior portion.

2 . The hybrid torque bar of claim 1 , wherein the intermediate portion forms a gradient transition between the first metal alloy and the second metal alloy, the gradient transition including a percent by weight of a wear resistant coating material defined by a smooth function of position along the gradient transition.

3 . The hybrid torque bar of claim 2 , wherein the wear resistant coating material comprises at least one of a metal carbide, a nickel-based alloy, or a nickel-based super alloy.

4 . The hybrid torque bar of claim 1 , further comprising:
a second rail extending between the first end of the base portion and the second end of the base portion; and a cross member extending between the first rail and the second rail, wherein the cross member defines an opening.

5 . The hybrid torque bar of claim 1 , wherein a first portion of the first rail extends in a first direction, and a second portion of the first rail extends in a second direction opposite the first direction.

6 . The hybrid torque bar of claim 5 , further comprising an attachment flange extending from the base portion in the first direction.

7 . The hybrid torque bar of claim 1 , wherein the first rail defines a hollow portion.

8 . A wheel assembly, comprising:
a wheel; and a hybrid torque bar coupled to the wheel, the hybrid torque bar comprising
a base portion;
a pin extending from a first end of the base portion; and
a rail extending between the first end of the base portion and a second end of the base portion opposite the first end, wherein an interior portion of at least one of the pin or the rail comprises a first metal alloy, wherein an exterior portion of the at least one of the pin or the rail comprises a second metal alloy, and wherein an intermediate portion of the at least one of the pin or the rail extends between the interior portion and the exterior portion.

9 . The wheel assembly of claim 8 , wherein the wheel comprises an inboard wheel half and an outboard wheel half, and wherein the pin is located in a receptacle defined by the inboard wheel half.

10 . The wheel assembly of claim 8 , wherein the first metal alloy comprises a first percentage by weight of a wear resistant coating material, the second metal alloy comprises a second percentage by weight of the wear resistant coating material, and the intermediate portion comprises an increasing percentage by weight of the wear resistant coating material.

11 . The wheel assembly of claim 10 , wherein the wear resistant coating material comprises at least one of a metal carbide, a nickel-based alloy, or a nickel-based super alloy.

12 . A method of making a hybrid torque bar for a wheel assembly, comprising:
forming a base portion using a first manufacturing process; forming a pin extending from a first end of the base portion; forming an attachment flange extending from the base portion; and forming a rail extending between the first end of the base portion and a second end of the base portion opposite the first end, wherein at least one of the forming the attachment flange, the forming the pin, or the forming the rail comprises using a second manufacturing process, the second manufacturing process comprising an additive manufacturing technique.

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

14 . The method of claim 12 , further comprising forming at least one of the attachment flange, the pin, or the rail comprising a coating located at an exterior of the at least one of the attachment flange, the pin, or the rail.

15 . The method of claim 14 , wherein forming the at least one of the attachment flange, the pin, or the rail comprising the coating comprises:
forming an interior portion of the at least one of the attachment flange, the pin, or the rail using a first metal alloy; forming an exterior portion of the at least one of the attachment flange, the pin, or the rail using a second metal alloy; and forming a gradient transition extending between the interior portion and the exterior portion.

16 . The method of claim 15 , wherein the first metal alloy comprises a first percentage by weight of a wear resistant coating material, the second metal alloy comprises a second percentage by weight of the wear resistant coating material, and the gradient transition comprises an increasing percentage by weight of the wear resistant coating material.

17 . The method of claim 16 , wherein the wear resistant coating material comprises at least one or a metal carbide, a nickel-based alloy, or a nickel-based super alloy.

18 . The method of claim 16 , further comprising forming the gradient transition including a percent by weight of the wear resistant coating material defined by a smooth function of position along the gradient transition.

19 . The method of claim 18 , wherein the smooth function of position comprises at least one a linear function, a logarithmic function, an exponential function, or a quadratic function.

20 . The method of claim 14 , further comprising forming the coating extending over, at least a portion of, a surface of the base portion.

Assignees

• Goodrich Corp

Inventors

• Steele Leslie
• Filburn Thomas P
• Klecka Michael A

Classifications

• F16D2250/00

  Manufacturing; Assembly · CPC title

• F16D2065/138

  to wheel · CPC title

• F16D2065/1376

  inner circumference · CPC title

• F16D65/0006

  Noise or vibration control · CPC title

• F16D2065/1364

  with relative movement axially · CPC title