A domer station having a domer assembly, a housing assembly, and a stacked piston assembly is provided. The domer assembly is movably disposed within a domer body passage located in the housing assembly and structured to move between a forward, first position and a retracted, second position. The stacked piston assembly includes a plurality of pistons, preferably three pistons, disposed in series and a pressure supply. The pistons are disposed behind the domer in pressure chambers. The pistons have a constant pressure applied thereto and are biased towards the domer. The pistons are, however, each restrained by a stop and do not contact, or operatively engage, the domer when the domer is in the domer first position.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A tool pack assembly having sensor plates to measure the temperature of a tool pack forming die and the forces exerted on the forming dies during can production. Each sensor plate tray include at least one temperature sensor and at least one strain sensor for reading and transmitting temperature and strain data relating to the dies of a tool pack assembly. The data read and transmitted may be used to determine the concentricity of the punch of a tool pack assembly during operation making can bodies.

A press forming method for forming a press forming part includes: a first forming step of forming a preformed part, the preformed part including a side wall portion, a flange portion formed in a bottom edge being a portion having a large wall depth and a torsional shape portion formed in an inclined side portion continuous from the flange portion to reach a second curved portion; and a second forming step of further processing the preformed part formed in the first forming step, including processes of forming the torsional shape portion into the flange portion and forming the flange portion in the second curved portion continuous from the inclined side portion and in a recessed side portion having a small wall depth so as to achieve formation of a target shape.

A method of forming a can end shell is provided which includes providing a can end shell having a central panel portion, a first panel radius around the central panel portion, a chamfer extending from the first panel radius, and a second panel radius around the chamfer, coining the can end shell to form a coined section in the first panel radius around at least a portion of the circumference of the central panel portion, and reforming the can end shell to form a step in the chamfer.

A method of forming a can end shell is provided which includes providing a can end shell having a central panel portion, a first panel radius around the central panel portion, a chamfer extending from the first panel radius, and a second panel radius around the chamfer, coining the can end shell to form a coined section in the first panel radius around at least a portion of the circumference of the central panel portion, and reforming the can end shell to form a step in the chamfer.

The present disclosure includes calculating coordinates of a midpoint of one of a plurality of first tool teaching points and the subsequent first tool teaching point, and calculating coordinates of a midpoint of one of a plurality of second tool teaching points that corresponds to the one first tool teaching point and the subsequent second tool teaching point, calculating an inter-midpoint distance between the midpoint of the first tool teaching points and the midpoint of the corresponding second tool teaching points, determining whether the inter-midpoint distance is within a given tolerance range, and reporting, when the inter-midpoint distance is out of the given tolerance range, the corresponding first tool teaching points and second tool teaching points as poor.