Metering socket

A method for manufacturing an assembly, comprising the steps of:

• a) providing a socket including:
• i) an outer socket surface, a first socket surface, a second socket surface, and a socket passage;
• ii) the outer socket surface has been, at least in part, fabricated through cold forming;
• iii) the first socket surface has been, at least in part, cold formed to include a push rod cooperating surface that defines a first socket hole that links the first socket surface with the socket passage;
• iv) the second socket surface defines a second socket hole that links the second socket surface with the socket passage and has been cold formed to include a protruding surface, a first flat surface;
• and a second flat surface, wherein the protruding surface is located between the first flat surface and the second flat surface;
• b) providing a leakdown plunger that has been fabricated, at least in part, through cold forming and includes:
• i) a first plunger opening and a second plunger opening that have been fabricated, at least in part, through cold forming;
• ii) an outer plunger surface enclosing an inner plunger surface;
• iii) the first plunger opening is provided with an annular plunger surface defining a plunger hole shaped to accommodate an insert;
• iv) the second plunger opening has been configured to cooperate with the socket;
• c) providing a lash adjuster body that has been fabricated, at least in part, through cold forming and includes a lash adjuster opening and an outer lash adjuster surface enclosing a lash adjuster cavity that is provided with an inner lash adjuster surface including:
• i) a first cylindrical lash adjuster surface that is provided with a first inner lash adjuster diameter;
• ii) a second cylindrical lash adjuster surface that is provided with a second inner lash adjuster diameter that is smaller than the first inner lash adjuster diameter;
• d) machining, at least in part, an annular lash adjuster surface into the inner lash adjuster surface so that the first cylindrical lash adjuster surface terminates at the annular lash adjuster surface;
• e) providing a roller follower body by:
• i) fabricating an outer roller surface that encloses a first roller cavity, a second roller cavity, and a transition that links the first roller cavity with the second roller cavity;
• ii) cold forming, at least in part, the first roller cavity so that the first roller cavity includes a first roller opening shaped to accept a roller and a first inner roller surface that is provided with a first roller wall, a second roller wall, a third roller wall, a fourth roller wall, a first angled roller wall, a second angled roller wall, a third angled roller wall, a fourth angled roller wall, a first angled roller surface, a second angled roller surface, a third angled roller surface, a fourth angled roller surface, a first curved roller surface;
• and a second curved roller surface;
• iii) cold forming, at least in part, each angled roller wall and each angled roller surface so that the angled roller walls and the angled roller surfaces extend axially into the roller follower body and each angled roller wall extends from the first roller opening and terminates at one of the angled roller surfaces, which are angled relative to a plane of the angled wall;
• iv) cold forming, at least in part, each wall so that the walls extend axially into the roller follower body from the first opening and at least one wall terminates, at least in part, at one of the curved surfaces;
• v) cold forming, at least in part, the second roller cavity and providing the second roller cavity with a second inner roller surface and a second roller opening, wherein the second inner roller surface is configured to accommodate the lash adjuster body;
• vi) machining, at least in part, a cylindrical roller surface within the second roller cavity that has been fabricated, at least in part, through cold forming;
• and
• vii) machining, at least in part, a lead roller surface that is generally frusto-conical in shape and located adjacent to the transition.

A method for manufacturing an assembly, comprising the steps of:

• a) providing a socket that includes an outer socket surface, a first socket surface, a second socket surface, and a socket passage, comprising the steps of:
• i) cold forming, at least in part, the outer socket surface;
• ii) cold forming, at least in part, the first socket surface to include a push rod cooperating surface defining a first socket hole linking the first socket surface with the socket passage;
• iii) cold forming, at least in part, the second socket surface to include a protruding surface, a first flat surface, and a second flat surface;
• wherein the protruding surface is located between the first flat surface and the second flat surface;
• iv) defining a second socket hole within the second socket surface so that the second socket surface is linked with the socket passage;
• b) providing a leakdown plunger that includes a first plunger opening, a second plunger opening that cooperates with the socket, and an outer plunger surface, comprising the steps of:
• i) cold forming, at least in part, the first plunger opening to provide a first annular plunger surface defining a plunger hole shaped to accommodate an insert;
• ii) cold forming, at least in part, the second plunger opening to provide a second annular plunger surface;
• iii) cold forming, at least in part, the outer plunger surface;
• c) providing a body that includes an outer surface enclosing a first cavity and a second cavity, wherein the first cavity is provided with a first opening shaped to accept a roller, a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall, a fourth angled wall, a first curved surface, and a second curved surface, comprising the steps of:
• i) cold forming, at least in part, each wall and each angled wall of the first cavity to extend axially into the body from the first opening so that the first wall faces the second wall, the fourth wall terminates, at least in part, at the first curved surface, and the third wall terminates, at least in part, at the second curved surface;
• ii) cold forming, at least in part, the second cavity;
• iii) providing the second cavity with a second inner surface that extends axially into the body from a second opening;
• iv) machining, at least in part, a cylindrical surface into the second inner surface of the second cavity;
• and
• d) assembling the leakdown plunger and the metering socket so that the second socket surface faces the second annular plunger surface.