JOINT DESIGN WELDING DISSIMILAR MATERIALS

• US 20140205369A1
• Filed: 01/21/2013
• Published: 07/24/2014
• Est. Priority Date: 01/21/2013
• Status: Abandoned Application

• Current Assignee: Magna Powertrain AG & Company KG (Magna International Incorporated)
• Original Assignee: Magna Powertrain AG & Company KG (Magna International Incorporated)
• Inventors: DIETRICH, Alexander, KEATON, Steve, KLAMPFL, Heinz Karl, PHILLIPS, Aaron
• Application Number:
  US13/746,032
• Publication Number:
  US 20140205369A1
• Time in Patent Office: Days
• US Class Current: 403/271
• CPC Class Codes: B23K 20/12 the heat being generated by friction; Friction welding
• CPC Class Codes: B23K 20/129 specially adapted for particular articles or workpieces
• CPC Class Codes: B23K 2101/006 Vehicles
• CPC Class Codes: B23K 2101/06 Tubes
• CPC Class Codes: B23K 2103/10 Aluminium or alloys thereof
• CPC Class Codes: B23K 2103/18 Dissimilar materials
• CPC Class Codes: B23K 33/006 for cylindrical workpieces
• CPC Class Codes: F16D 1/027 non-disconnectable, e.g. involving gluing, welding or the like
• CPC Class Codes: F16D 1/068 involving gluing, welding or the like

Abstract

A joint site design for welding of a shaft has a tubular shape composed of a hard material with a hub having a flat shape composed of softer material. The shaft is joined by welding at a connection area located at an end face thereof to a connection area of the hub located at a radial shoulder thereof.

Claims

1. A joint site comprising:

a shaft having a first body with a tubular shape and being composed of a first material having a first hardness;

a hub having a second body with a flat shape and being composed of a second material having a second hardness that is less than the first hardness,

wherein the shaft is configured for joint-connection at a first connection area to a second connection area of the hub by welding.

2. The joint site of claim 1, wherein the first connection area comprises an end face of the first body.

3. The joint site of claim 1, wherein the second connection area comprises a radial shoulder of the hub.

4. The joint site of claim 3, wherein the second connection area is located a predetermined distance from the inner circumference of the hub.

5. The joint site of claim 4, wherein the predetermined distance is greater than the thickness of a protrusion of melted material of the hub at the second connection area.

6. The joint site of claim 5, wherein the protrusion is spaced a second predetermined distance and the inner circumference of the hub.

7. The joint site of claim 6, wherein the first predetermined distance is greater than the second predetermined distance.

8. The joint site of claim 1, wherein:

the first connection area comprises an end face of the first body; and

the second connection area comprises a radial shoulder of the hub.

9. The joint site of claim 8, wherein the second connection area is located a predetermined distance from the inner circumference of the hub.

10. The joint site of claim 9, wherein the predetermined distance is greater than the thickness of a protrusion of melted material of the hub at the second connection area.

11. The joint site of claim 10, wherein the protrusion is spaced a second predetermined distance and the inner circumference of the hub.

12. The joint site of claim 11, wherein the first predetermined distance is greater than the second predetermined distance.

13. The joint site design of claim 8, wherein the surface of the end face of the shaft is flat and perpendicular to the longitudinal axis of the shaft.

14. The joint site design of claim 8, wherein the surface of the end face of the shaft is flat and inclined relative to the longitudinal axis of the shaft.

15. The joint site design of claim 8, wherein the end face of the shaft has a conical cross-section.

16. The joint site design of claim 1, wherein joint sites of joining members on a composite workpiece, after the welding, are arranged at an angle of between 10°

to 20°

to one another.

17. The joint site design of claim 1, wherein joint sites of the joining members on the composite workpiece, after the welding, are arranged at an angle of 15°

to one another.

18. The joint site design of claim 1, wherein the hub and the shaft are components of a clutch.

19. The joint site design of claim 1, wherein the joint site is configured for use in a transfer environment and automatic transmissions.

20. A joint site comprising:

a first body having an end face, the first body comprising a first material having a first hardness;

a second body having a radial shoulder, the second body comprising a second material having a second hardness that is less than the first hardness,

wherein the first body is configured for joint-connection at the end face to radial shoulder of the second body by friction welding.