A driven member of a metal peening machine is disclosed. The metal peening machine is configured to drive the driven member into contact with a work surface of a metal workpiece to deform the metal workpiece. The driven member includes a shaft with an impact end. The driven member includes least one of a plurality of impact features, an impact feature with a non-flat impact surface, a non-round impact feature, and an asymmetrical impact feature that is coupled to and protrudes from the impact end of the shaft. The at least one of the plurality of impact features, the impact feature with a non-flat impact surface, the non-round impact feature, and the asymmetrical impact feature define at least one impact surface to be driven into contact with the work surface of the metal workpiece.

A spinning method includes supporting a supported portion of a cylindrical work by a work supporting portion; pressing a first roller of a spinning head against a processed portion of the work while revolving the first roller; and performing a forming process that points a tube axis of the processed portion of the work in a given direction by pressing the first roller and a second roller in which a plane of revolution thereof is provided in a different position, in a rotational axis direction of a spindle of the spinning head, than a plane of revolution of the first roller, while revolving the first roller and the second roller, and moving the work supporting portion relative to the spinning head or moving the spinning head relative to the work supporting portion, while the first roller and the second roller work in cooperation with each other to retain the work.

A spinning method includes supporting a supported portion of a cylindrical work by a work supporting portion; pressing a first roller of a spinning head against a processed portion of the work while revolving the first roller; and performing a forming process that points a tube axis of the processed portion of the work in a given direction by pressing the first roller and a second roller in which a plane of revolution thereof is provided in a different position, in a rotational axis direction of a spindle of the spinning head, than a plane of revolution of the first roller, while revolving the first roller and the second roller, and moving the work supporting portion relative to the spinning head or moving the spinning head relative to the work supporting portion, while the first roller and the second roller work in cooperation with each other to retain the work.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

Method for forming a collar in a muffler shell including: providing a muffler shell made of a metal sheet and forming a muffler housing, the muffler shell having an exhaust gas opening, providing a collar forming head having a rotational axis and at least two movable expanders, introducing a collar forming head into a muffler housing, moving the expanders of the collar forming head introduced into the muffler shell radially away from the rotational axis of the collar forming head from a retracted position to an expanded position rotating the collar forming head around the of the collar forming head, bringing the rotating expanded collar forming head in contact with the metal sheet forming an outwardly projecting collar around the exhaust gas opening by flaring the edge of the metal sheet.

Method for forming a collar in a muffler shell including: providing a muffler shell made of a metal sheet and forming a muffler housing, the muffler shell having an exhaust gas opening, providing a collar forming head having a rotational axis and at least two movable expanders, introducing a collar forming head into a muffler housing, moving the expanders of the collar forming head introduced into the muffler shell radially away from the rotational axis of the collar forming head from a retracted position to an expanded position rotating the collar forming head around the of the collar forming head, bringing the rotating expanded collar forming head in contact with the metal sheet forming an outwardly projecting collar around the exhaust gas opening by flaring the edge of the metal sheet.

A full-electric servo vertical three-counter driving power spinning device includes a rack, and the rack includes a baseplate. A workpiece active rotating mechanism and an inner roller feeding mechanism are provided on the baseplate, an outer roller feeding mechanism is provided on the rack; the outer roller feeding mechanism is provided with an outer roller active rotating mechanism; the outer roller active rotating mechanism includes an outer roller active rotating motor and an outer roller, and the inner roller feeding mechanism includes an inner roller. A stress state of a cylinder material by adopting a combined method of an active rotation of a roller and an active rotation of a workpiece turntable is significantly different from that by a passive spinning of a counter-roller, thus improving a thinning rate of a wall thickness of a cylindrical member and a hardening properties of materials.

A full-electric servo vertical three-counter driving power spinning device includes a rack, and the rack includes a baseplate. A workpiece active rotating mechanism and an inner roller feeding mechanism are provided on the baseplate, an outer roller feeding mechanism is provided on the rack; the outer roller feeding mechanism is provided with an outer roller active rotating mechanism; the outer roller active rotating mechanism includes an outer roller active rotating motor and an outer roller, and the inner roller feeding mechanism includes an inner roller. A stress state of a cylinder material by adopting a combined method of an active rotation of a roller and an active rotation of a workpiece turntable is significantly different from that by a passive spinning of a counter-roller, thus improving a thinning rate of a wall thickness of a cylindrical member and a hardening properties of materials.

A deformation processing support system acquires target shape data of a work having a reference line; acquires intermediate shape data from the work in an intermediate shape having a reference line marked thereon; and overlaps the two data on each other by aligning the reference lines relative to each other, to calculate a necessary deformation amount of the work based on a difference between the two data overlapped on each other. To align the reference lines with each other, first and second alignment axes with the same length calculated for the respective reference lines are superimposed on each other. Subsequently, the intermediate shape data is relatively rotated with respect to the target shape data around the first alignment axis.