A ram drive assembly for a can bodymaker includes a mounting assembly and a number of forming assemblies supported thereon, each including: a stationary assembly, having a die pack and a domer, and a moving assembly having a ram assembly and a cam follower assembly. The die pack defines a passage having a proximal and a distal end, with the domer disposed adjacent the distal end. The ram assembly includes a ram body having a proximal and a distal end, with the cam follower assembly coupled to the proximal end. The ram body is structured to reciprocate through the passage between a retracted and an extended position. The ram drive assembly includes: a cam having a body with a number of surfaces for engaging each cam follower assembly; and a motor having a rotating output shaft operatively coupled to the cam body for rotating the cam body.

A cam follower assembly for a can bodymaker includes a slider structured to be coupled to the proximal end of a ram body of the can bodymaker; and a plurality of cam follower members rotatably coupled to the slider. The cam follower members are structured to be operatively coupled to a cam of a ram drive assembly.

A redraw assembly for a can bodymaker includes a frame and a hold down piston moveably coupled to the frame so as to be slidable with respect thereto. The hold down piston is structured to have a blank holder coupled thereto for engaging and securing a cup adjacent an opening of a die pack. The redraw assembly further includes a cam disk engaged with the hold down piston and moveably coupled to the frame so as to be readily rotatable about a rotation axis and a motor having an output shaft coupled to the cam disk. The motor is structured to selectively rotate the cam disk about the rotation axis. The hold down piston is movable among a first positioning and a second positioning dependent on the positioning of the cam disk.

An expansion tool for expanding an article. The expansion tool includes a lead-in portion extending outwardly from a first end of the expansion tool and a first pilot portion extending from the lead-in portion. The first pilot portion has a first diameter. The expansion tool further includes a second pilot portion being generally parallel with the first pilot portion. The second pilot portion has a second diameter larger than the first diameter. The expansion tool further includes a forming portion bridging the first pilot portion and the second pilot portion. The forming portion is generally sloped. The expansion tool further includes an expansion portion extending from the second pilot portion toward a second end of the expansion tool. The expansion portion has a third diameter larger than the second diameter.

An expansion tool for expanding an article. The expansion tool includes a lead-in portion extending outwardly from a first end of the expansion tool and a first pilot portion extending from the lead-in portion. The first pilot portion has a first diameter. The expansion tool further includes a second pilot portion being generally parallel with the first pilot portion. The second pilot portion has a second diameter larger than the first diameter. The expansion tool further includes a forming portion bridging the first pilot portion and the second pilot portion. The forming portion is generally sloped. The expansion tool further includes an expansion portion extending from the second pilot portion toward a second end of the expansion tool. The expansion portion has a third diameter larger than the second diameter.

A cam follower assembly for a can bodymaker includes a slider structured to be coupled to the proximal end of a ram body of the can bodymaker; and a plurality of cam follower members rotatably coupled to the slider. The cam follower members are structured to be operatively coupled to a cam of a ram drive assembly.

A redraw assembly for a can bodymaker includes a frame and a hold down piston moveably coupled to the frame so as to be slidable with respect thereto. The hold down piston is structured to have a blank holder coupled thereto for engaging and securing a cup adjacent an opening of a die pack. The redraw assembly further includes a cam disk engaged with the hold down piston and moveably coupled to the frame so as to be readily rotatable about a rotation axis and a motor having an output shaft coupled to the cam disk. The motor is structured to selectively rotate the cam disk about the rotation axis. The hold down piston is movable among a first positioning and a second positioning dependent on the positioning of the cam disk.

A base reformer assembly, and/or a base reformer roller die unit, includes a generally toroid chuck, a roller die, and a roller die unit actuating assembly. The roller die is movably disposed within the chuck. The roller die unit actuating assembly is structured to actuate the roller die. The roller die unit actuating assembly is operatively coupled to the roller die. Further, all elements of the roller die unit actuating assembly have a robust cross-sectional area.

A base reformer assembly, and/or a base reformer roller die unit, includes a generally torpid chuck, a roller die, and a roller die unit actuating assembly. The roller die is movably disposed within the chuck. The roller die unit actuating assembly is structured to actuate the roller die. The roller die unit actuating assembly is operatively coupled to the roller die. Further, all elements of the roller die unit actuating assembly have a robust cross-sectional area.

A bottle-shaped can in which flatness and circularity of a neck portion are improved. An upper incomplete thread portion is formed at an upper end of a thread. A height of the upper incomplete thread portion is shorter than an average height of the thread, and increases gradually toward the average height. A length of the upper incomplete thread portion between a first point and a second point is set in such a manner that an angle between a line drawn between the first point and a center point of the neck portion, and a line drawn between the second point and the center point of the neck portion falls within a range from 20 degrees to 60 degrees.