Friction facing method for use in a friction environment

• US 7,069,636 B2
• Filed: 10/02/2003
• Issued: 07/04/2006
• Est. Priority Date: 10/02/2003
• Status: Active Grant

• Current Assignee: Sulzer Friction Systems (U.S.) Inc.
• Original Assignee: Euroflamm Select Incorporated
• Inventors: Schueler, Eric A, Rich, Jonathan M, Guthrie, Douglas B, Nels, Terry E
• Primary Examiner(s): Omgba, Essama
• Application Number:
  US10/677,577
• Publication Number:
  US 20050071979A1
• Time in Patent Office: 1,006 Days
• Field of Search: 294/58, 295/57, 295/58, 192/107.R, 192/113.36
• US Class Current: 29/458
• CPC Class Codes: F16D 2069/004 Profiled friction surfaces, e.g. grooves, dimples
• CPC Class Codes: F16D 23/025 Synchro rings
• CPC Class Codes: F16D 2300/10 Surface characteristics; Details related to material surfaces
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49885 with coating before or during assembling
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material
• CPC Class Codes: Y10T 29/49996 Successive distinct removal operations

Abstract

A facing material for a power transmission-absorption assembly is shown and described. In one embodiment, the facing material includes a plurality of first channels having a first, deep depth and a plurality of second channels having a second, shallow depth. One or more of the plurality of second channels may be superimposed or in fluid communication with the first channels to enable fluid to flow across the surface 12c and through the first channel to achieve the desired fluid flow characteristics. The second channels may be defined by a connector that has varying shapes to further facilitate the desired fluid flow characteristics. The material may be used in a power transmission-absorption environment such as on a blocker synchronizer ring, clutch plate or the like.

Claims

1. A method for forming a friction member comprising the steps of:

providing a friction facing comprising a plurality of apertures having an open end and a closed end;

situating said friction facing onto a support member; and

creating a plurality of second channels into said friction facing in fluid communication with said plurality of apertures at a predetermined location at said closed end of said at least one of said plurality of apertures;

wherein each of said plurality of second channels extending a first depth of said friction facing and said plurality of apertures extending a second depth of said friction facing, wherein said first and second depths are not equal.

2. The method as recited in claim 1 wherein at least one of said plurality of second channels is situated between a pair of said plurality of apertures.

3. The method as recited in claim 1 wherein said method further comprises the step of:

creating said plurality of second channels at a predetermined location in said friction facing.

4. The method as recited in claim 3 wherein said predetermined location is between a first edge of said friction facing and a second edge of said friction facing such that said at least one of said plurality of second channels is in fluid communication with said plurality of apertures.

5. The method as recited in claim 3 wherein said creating step comprises the step of:

driving a platen into said facing material to create said plurality of second channels.

6. The method as recited in claim 3 wherein said creating step comprises the step of:

embossing said plurality of second channels into said friction facing.

7. The method as recited in claim 3 wherein said method further comprises:

creating said plurality of second channels in said friction facing before said facing material is situated on said support member, said support member being a synchronizer.

8. The method as recited in claim 1 wherein said predetermined location is between a first edge of said friction facing and a second edge of said friction facing such that said at least one of said plurality of second channels is in fluid communication with said plurality of apertures.

9. The method as recited in claim 1 wherein said method further comprises the steps of:

causing said friction facing to be aligned with a plurality of ribs on a platen;

forcing said platen into said friction facing so that said plurality of ribs forms at least one of said plurality of second channels at said closed end of one of said plurality of apertures.

10. The method as recited in claim 9 wherein said forcing step further comprises the step of:

forcing said platen into said friction facing so that one of said plurality of second channels is provided at each of said closed end of said plurality of apertures.

11. The method as recited in claim 10 wherein said forcing step further comprises the step of:

forcing said platen into said friction facing so that one of said plurality of second channels is provided at some but not all of said closed ends of said plurality of apertures.

12. The method as recited in claim 1 wherein said method further comprises the step of:

providing a facing having an adhesive on a bonding side thereof;

heating said platen;

driving said platen such that said plurality of second channels are formed while said facing material is being bonded to said support member.

13. The method as recited in claim 1 wherein said method further comprises:

forming said plurality of second channels in said friction facing after said facing material is situated on said support member, said support member being a sychronizer.

14. The method as recited in claim 1 wherein said first thickness is less than 100 percent of the thickness of said friction facing and said second thickness is 100 percent the thickness of said friction facing.

15. A method for forming a friction member comprising the steps of:

providing a friction facing comprising a plurality of apertures having an open end and a closed end;

situating said friction facing onto a support member; and

creating a plurality of second channels into said friction facing;

providing a facing having an adhesive on a bonding side thereof;

heating a platen;

driving said platen such that said plurality of second channels are formed while said facing material is being bonded to said support member, wherein said support member is a synchronizer ring.

16. The method as recited in claim 15 wherein said support member is a clutch plate.

17. The method as recited in claim 15 wherein said support member is a synchronizer ring.

18. A method for forming a friction member comprising the steps of:

providing a friction facing comprising a plurality of apertures having an open end and a closed end;

situating said friction facing onto a support member; and

creating a plurality of second channels into said friction facing;

stamping said friction facing from a web having said plurality of second channels provided therein and prior to said situating step.

19. A method for forming a friction member comprising the steps of:

providing a friction facing comprising a plurality of apertures having an open end and a closed end;

situating said friction facing onto a support member; and

forming a plurality of second channels in said friction facing after said facing material is situated on said support member;

wherein said forming step comprises the step of;

embossing said plurality of second channels into said friction facing substantially simultaneously when facing material is being bonded onto said support member, wherein said support member is a synchronizer.

20. The method as recited in claim 19 wherein said support member is a clutch plate.

21. The method as recited in claim 19 wherein said support member is a synchronizer ring.

22. A method of increasing fluid flow across a facing material comprising the steps of:

providing a plurality of channels comprising a shallow area and a deep area for permitting fluid to flow from a first area, across a surface of said facing material, to a second area;

said shallow area and said deep area extending different depths through said facing material;

wherein said deep area extends 100 percent of the thickness of said facing material and said shallow area extends less than 100 percent of the thickness of said facing material.