HIGH-SPEED COUPLING SUBASSEMBLY AND HIGH-SPEED OVERRUNNING CLUTCH ASSEMBLY INCLUDING THE SUBASSEMBLY
A high-speed coupling subassembly and a high-speed overrunning clutch assembly including the subassembly are provided. The subassembly includes a powdered metal member. The member includes an axially extending coupling portion and a recess portion. The recess portion has a coupling face and a joining face spaced apart from the coupling face and being formed with a first pilot. The coupling face has at least one recess. Each of the recesses defines a load-bearing shoulder. A powdered metal hub includes an axially extending connecting portion and a mounting portion being formed with a second pilot. The mounting portion of the hub is joined to the recess portion of the member at a joint at the joining face. The first and second pilots are in contact at a pilot diameter to concentrically align the hub and the member during joining to improve performance of the assembly during a high-speed overrun condition.
1 . A high-speed coupling subassembly for an overrunning coupling assembly, the subassembly comprising:
a powdered metal member having a large number of pores, the member including an axially extending coupling portion and a recess portion, the recess portion having a coupling face and a joining face spaced apart from the coupling face and being formed with a first pilot, wherein the member is mounted for rotation about an axis, the coupling face having at least one recess, each of the recesses defining a load-bearing shoulder; and
a powdered metal hub having a large number of pores, the hub including an axially extending spline portion and a mounting portion being formed with a second pilot wherein the mounting portion of the hub is joined to the recess portion of the member at a joint at the joining face and wherein the first and second pilots are in contact at a pilot diameter to concentrically align the hub and the member during joining to improve performance of the assembly during a high-speed overrun condition.
2 . The subassembly as claimed in claim 1 , wherein the joint is a brazed joint comprising a solid metal layer to bond the member and the hub together.
3 . The subassembly as claimed in claim 2 , wherein the brazed joint includes a brazed alloy infiltrated into the pores of the hub and the member.
4 . The subassembly as claimed in claim 1 , wherein each recess is sized and shaped to receive and retain a locking member that moves in its recess during the overrun condition of the assembly.
5 . The subassembly as claimed in claim 1 , wherein the first and second pilots are curved surfaces.
6 . The subassembly as claimed in claim 1 , wherein the member is a pocket plate member.
7 . The subassembly as claimed in claim 4 , wherein each locking member is either a locking strut or an impact energy storage element.
8 . The subassembly as claimed in claim 1 , wherein the first and second pilots are annular surfaces.
9 . The subassembly as claimed in claim 1 , wherein the member is a clutch member.
10 . The subassembly as claimed in claim 1 , wherein each recess has a “T” shape.
11 . The subassembly as claimed in claim 1 , wherein each recess has an inner recess for receiving a biasing spring.
12 . The subassembly as claimed in claim 11 , wherein the coupling face is oriented to face axially along the axis.
13 . A high-speed overrunning clutch assembly comprising:
powdered metal first and second clutch members, each of the members having a large number of pores and each of the members including an axially extending coupling portion and a recess portion, each recess portion having a coupling face, the recess portion of the first clutch member having a joining face spaced apart from its coupling face and being formed with a first pilot, wherein the first member is mounted for rotation about an axis, the coupling face of each recess portion having at least one recess, each of the recesses defining a load-bearing shoulder; and
a powdered metal hub having a large number of pores, the hub including an axially extending connecting portion and a mounting portion being formed with a second pilot wherein the mounting portion of the hub is joined to the recess portion of the first member at a joint at the joining face and wherein the first and second pilots are in contact at a pilot diameter to concentrically align the hub and the first member during joining to improve performance of the assembly during a high-speed overrun condition.
14 . The assembly as claimed in claim 13 , wherein the joint is a brazed joint comprising a solid metal layer to bond the first member and the hub together.
15 . The assembly as claimed in claim 14 , wherein the brazed joint includes a brazed alloy infiltrated into the pores of the hub and the first member.
16 . The assembly as claimed in claim 13 , wherein each recess of the first member is sized and shaped to receive and retain a locking member that moves in its recess during the overrun condition of the assembly.
17 . The assembly as claimed in claim 13 , wherein the first and second pilots are curved surfaces.
18 . The assembly as claimed in claim 13 , wherein the first member is a pocket plate member.
19 . The assembly as claimed in claim 16 , wherein each locking member is either a locking strut or an impact energy storage element.
20 . The assembly as claimed in claim 13 , wherein the first and second pilots are annular surfaces.
21 . The assembly as claimed in claim 13 , wherein each recess of the first member has a “T” shape.
22 . The assembly as claimed in claim 13 , wherein each recess of the first member has an inner recess for receiving a biasing spring.
23 . The assembly as claimed in claim 13 , wherein each coupling face is oriented to face axially along the axis.