Abstract: A cylinder bore including an inner surface including an axial travel area and an axial non-travel area including two discontinuous axial widths of the cylindrical bore and the axial travel area extending therebetween. A nominal diameter of the axial travel area is greater than that of the axial non-travel area. A plurality of annular grooves is formed in the two discontinuous axial widths of the cylindrical bore.

Abstract: A cylinder bore including an inner surface including an axial travel area and an axial non-travel area including two discontinuous axial widths of the cylindrical bore and the axial travel area extending therebetween. A nominal diameter of the axial travel area is greater than that of the axial non-travel area. A plurality of annular grooves is formed in the two discontinuous axial widths of the cylindrical bore.

Abstract: A cutting tool. The cutting tool includes a cylindrical body and one or more axial rows of cutting elements, which project outwardly from and are situated radially to the circumference of the cylindrical body. Each cutting element of each row includes one or more pocket cutting elements and one or more groove cutting elements. Each pocket cutting element includes a cutting surface. Each groove cutting element includes a cutting surface having groove cutting teeth.

Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.

Abstract: A method for applying a coating includes: obtaining a subject cylindrical part including an inner subject coated surface applied using a spraying device at a first operating condition, the inner subject coated surface including a longitudinal axis and a cross-section, the cross-section intersecting the longitudinal axis at a center point and including end points located on an outer perimeter; measuring the inner subject coated surface to obtain subject coating data including distance values, each being a distance between the center point and one of the end points; comparing the subject coating data to standard coating data to obtain comparison data; and adjusting the spraying device based on the comparison data to have a second operating condition different from the first operating condition.

Abstract: A method of cutting a profile in a cylinder surface. The method includes simultaneously interpolating an axial portion of the cylindrical surface using a cutting tool to form a profile having a plurality of annular grooves and a pocket having a radius larger than the cylindrical surface prior to the interpolating step.

Abstract: A cutting tool. The cutting tool includes a cylindrical body and one or more axial rows of cutting elements, which project outwardly from and are situated radially to the circumference of the cylindrical body. Each cutting element of each row includes one or more pocket cutting elements and one or more groove cutting elements. Each pocket cutting element includes a cutting surface. Each groove cutting element includes a cutting surface having groove cutting teeth.

Abstract: A cylinder bore with selective surface treatment includes a longitudinal axis and a cylindrical wall extending along the longitudinal axis, the cylindrical wall including first and second end portions and a middle portion positioned between the first and second end portions, the middle portion having a greater surface roughness than at least one of the first and second end portions.

Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.

Abstract: A method for applying a coating includes: obtaining a subject cylindrical part including an inner subject coated surface applied using a spraying device at a first operating condition, the inner subject coated surface including a longitudinal axis and a cross-section, the cross-section intersecting the longitudinal axis at a center point and including end points located on an outer perimeter; measuring the inner subject coated surface to obtain subject coating data including distance values, each being a distance between the center point and one of the end points; comparing the subject coating data to standard coating data to obtain comparison data; and adjusting the spraying device based on the comparison data to have a second operating condition different from the first operating condition.

Abstract: A cylinder bore with selective surface treatment includes a longitudinal axis and a cylindrical wall extending along the longitudinal axis, the cylindrical wall including first and second end portions and a middle portion positioned between the first and second end portions, the middle portion having a greater surface roughness than at least one of the first and second end portions.

Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.

Abstract: A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating.

Abstract: A method for forming a component includes forming a workpiece into a hollow preform cylinder concentric with an axis and including an inner surface that extends along the axis, placing within the preform cylinder a mandrel having an outer surface, flow-forming the inner surface and the outer surface of the preform cylinder such that the inner surface of the cylinder conforms to at least a portion of the outer surface of the mandrel, and cutting the flow formed cylinder transversely with respect to the axis into segments, each segment having an axial length.

Abstract: An apparatus for extruding helical teeth in a gear blank includes a press including a die plate and a die base, the die plate being movable along an axis relative to the die base, the die base supporting the gear blank. A mandrel, aligned with the axis and moveable with the die plate along the axis, includes a surface that includes helical die teeth. A servo motor drives the mandrel in rotation about the axis to the required helix angle as the mandrel moves axially relative to the gear blank.

Abstract: A system for extruding teeth in a workpiece includes a first mandrel supported on a first press and including first die teeth that produce partially formed teeth on the workpiece as the first die teeth are extruded into the workpiece by the first press, a second mandrel supported on a second press and including second die teeth that produce fully formed teeth on the workpiece as the second die teeth are extruded into the workpiece by the second die station, and a transfer system for supporting and carrying the workpiece with the lower die assembly from the first press to the second press.

Abstract: An apparatus for extruding teeth in a blank includes a press that includes a lower die plate for supporting the blank thereon, and upper die plate that moves along an axis relative to the lower die plate. A mandrel, aligned with the axis, moves with the upper die plate along the axis, and includes die teeth which form gear teeth to net shape by back extrusion. An impingement ring, located between the upper die plate and the blank, has an opening that allows the die teeth of the mandrel to contact the blank, and includes a stinger that forces material of the blank toward the axis during the forming cycle.

Abstract: A method for forming a component that transmits torque in an automatic transmission includes forming a workpiece with a hub concentric with and extending along an axis and forming the workpiece with a disc that is integral with the hub and extends radially outward from the hub. A hollow perform cylinder is formed integrally with the disc, located at a radial end of the disc distant from the hub, concentric with the axis, and includes an inner surface and an outer surface. A hollow perform cylinder is flow-formed using a flow-forming mandrel located within the cylinder and having an outer surface formed with gear teeth such that the inner surface of the cylinder conforms to at least a portion of the gear teeth on the flow-forming mandrel.

Abstract: An apparatus for extruding teeth in a blank includes a press that includes a lower die plate for supporting the blank thereon, and upper die plate that moves along an axis relative to the lower die plate. A mandrel, aligned with the axis, moves with the upper die plate along the axis, and includes die teeth which form gear teeth to net shape by back extrusion. An impingement ring, located between the upper die plate and the blank, has an opening that allows the die teeth of the mandrel to contact the blank, and includes a stinger that forces material of the blank toward the axis during the forming cycle.

Abstract: A system for extruding teeth in a workpiece includes a first mandrel supported on a first press and including first die teeth that produce partially formed teeth on the workpiece as the first die teeth are extruded into the workpiece by the first press, a second mandrel supported on a second press and including second die teeth that produce fully formed teeth on the workpiece as the second die teeth are extruded into the workpiece by the second die station, and a transfer system for supporting and carrying the workpiece with the lower die assembly from the first press to the second press.