A method for fabricating a double layer cup-shaped part may include shaping a first material into a hollow cylinder, mounting the hollow cylinder on a draw punch, where the draw punch may include an upper punch portion with a first diameter and a lower punch portion with a second smaller diameter. Mounting the hollow cylinder on the draw punch may include tightly fitting the hollow cylinder around the lower punch portion. The method may further include forming the double layer cup-shaped part by drawing a blank material through a draw die by placing the blank material over an upper opening of the draw die, and pressing the draw punch over the blank material. The first material may form an inner layer of the double layer cup-shaped part and the blank material may form an outer cup-shaped layer of the double layer cup-shaped part.

A method for fabricating a double layer cup-shaped part may include shaping a first material into a hollow cylinder, mounting the hollow cylinder on a draw punch, where the draw punch may include an upper punch portion with a first diameter and a lower punch portion with a second smaller diameter. Mounting the hollow cylinder on the draw punch may include tightly fitting the hollow cylinder around the lower punch portion. The method may further include forming the double layer cup-shaped part by drawing a blank material through a draw die by placing the blank material over an upper opening of the draw die, and pressing the draw punch over the blank material. The first material may form an inner layer of the double layer cup-shaped part and the blank material may form an outer cup-shaped layer of the double layer cup-shaped part.

A clamp ring assembly for use in a can bottom forming assembly comprising a clamp ring retainer, a clamp ring having a biasing assembly and an inner dome die. The clamp ring floats with respect to the clamp ring retainer to accommodate off center contact by the punch and to center the punch at the end of the ram stroke, A slightly conically shaped inner dome die structure or dome plug may be provided to further center the punch at the end of the ram stroke.

A clamp ring assembly for use in a can bottom forming assembly comprising a clamp ring retainer, a clamp ring having a biasing assembly and an inner dome die. The clamp ring floats with respect to the clamp ring retainer to accommodate off center contact by the punch and to center the punch at the end of the ram stroke, A slightly conically shaped inner dome die structure or dome plug may be provided to further center the punch at the end of the ram stroke.

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 method of manufacturing a textured-smooth hybrid metal closure cap, and a closing caps produced by the method. The method includes a) the supply of a strip or sheet, made of aluminum alloy known as a “textured” strip or sheet, typically coated on at least one of its faces by a stampable lacquer, b) a first operation for cutting discs, called blanks, c) a step for stamping, in one or more passes, of said blank metal, typically using a stamping lubricant, so as to form a stamped blank, comprising a head and a skirt, typically axially symmetric in the axial direction, d) a step for degreasing said stamped blank, typically intended to eliminate the remaining lubricant, to form a degreased blank that can be lacquered, and e) an optional step of protective lacquering and decoration. After the stamping step, and before the lacquering step, at least one drawing step consisting in passing the stamped blank through drawing rings in order to stretch and thin the metal.

A method of manufacturing a textured-smooth hybrid metal closure cap, and a closing caps produced by the method. The method includes a) the supply of a strip or sheet, made of aluminum alloy known as a “textured” strip or sheet, typically coated on at least one of its faces by a stampable lacquer, b) a first operation for cutting discs, called blanks, c) a step for stamping, in one or more passes, of said blank metal, typically using a stamping lubricant, so as to form a stamped blank, comprising a head and a skirt, typically axially symmetric in the axial direction, d) a step for degreasing said stamped blank, typically intended to eliminate the remaining lubricant, to form a degreased blank that can be lacquered, and e) an optional step of protective lacquering and decoration. After the stamping step, and before the lacquering step, at least one drawing step consisting in passing the stamped blank through drawing rings in order to stretch and thin the metal.

Metallic tubular products having improved collapse resistance are disclosed. The metallic tubular products are produced by compressive forming processes. The method comprises identifying the types of stress that can be applied in order to change the residual stress profile of metallic tubular products, such as those that have completed a straightening process, and results in a residual stress profile that improves collapse resistance. The metallic tubular products are subjected to radial compression processing to control the residual stress profile and to enhance collapse resistance. The radial compression process may be used after the tubular product has been subjected to a straightening process.

Metallic tubular products having improved collapse resistance are disclosed. The metallic tubular products are produced by compressive forming processes. The method comprises identifying the types of stress that can be applied in order to change the residual stress profile of metallic tubular products, such as those that have completed a straightening process, and results in a residual stress profile that improves collapse resistance. The metallic tubular products are subjected to radial compression processing to control the residual stress profile and to enhance collapse resistance. The radial compression process may be used after the tubular product has been subjected to a straightening process.

An apparatus for forming a base profile on a metal container carried on a punch moving along an axis. The apparatus comprises a die for forming the base profile on the container and a resilient support for holding the die in a resting position substantially along said axis whilst allowing the die to be deflectable perpendicular to said axis and providing a restoring force to return the die to the resting position.