A rodstock barrel drive having a first and second roller gears, each having a toothed section and a gripping surface section, such that the teeth of the roller gears intermesh, causing rotation of one of roller gear to rotate the other roller gear in the opposite direction, so as to draw a rodstock through a space between the gripping surfaces of the pair of roller gears, a ring gear which engages with one of the pair of roller gears, a drive gear which engages with the ring gear, and one or more idler gears which engage with the ring gear, all within a housing, the drive gear being connected to, and rotated by, a motor, which causes the rodstock to be drawn through the roller gears, wherein all the gears are all positioned within, and oriented parallel to, a common plane.

Provided are a flat-member-feeding device with which it is possible to reduce power consumption and quickly supply a flat member, and a method for manufacturing the flat-member-feeding device. A method for attaching a motor for rotating a downstream roll to a flat-member-feeding device, the motor being provided with a hollow and substantially cylindrical stator and a hollow and substantially cylindrical rotor that is disposed in the space within the stator, includes: a step for disposing a sleeve so as to occupy part of the space inside the rotor, and mounting the sleeve on the rotor such that one end of the rotor is supported by one end of the sleeve and the other end of the rotor is supported by the other end of the sleeve; and a step for mounting the sleeve on a downstream roll shaft to which the downstream roll is fixed, and attaching the motor to the flat-member-feeding device.

Provided are a flat-member-feeding device with which it is possible to reduce power consumption and quickly supply a flat member, and a method for manufacturing the flat-member-feeding device. A method for attaching a motor for rotating a downstream roll to a flat-member-feeding device, the motor being provided with a hollow and substantially cylindrical stator and a hollow and substantially cylindrical rotor that is disposed in the space within the stator, includes: a step for disposing a sleeve so as to occupy part of the space inside the rotor, and mounting the sleeve on the rotor such that one end of the rotor is supported by one end of the sleeve and the other end of the rotor is supported by the other end of the sleeve; and a step for mounting the sleeve on a downstream roll shaft to which the downstream roll is fixed, and attaching the motor to the flat-member-feeding device.

A method of manufacturing a laminated iron core includes: inserting a plurality of electrical steel strips in a superposed state to feed rolls including a pair of upper and lower feed rolls that are driven by a drive device to feed the electrical steel strips in a superposed state into a die having a plurality of punching processes in sequence; joining a part or all of the superposed electrical steel strips together before entering the die or at an upstream stage portion of the die after feeding out the electrical steel strips from the pair of upper and lower feed rolls; and punching simultaneously the plurality of electrical steel strips in a superposed state in the die.

A method of manufacturing a laminated iron core includes: inserting a plurality of electrical steel strips in a superposed state to feed rolls including a pair of upper and lower feed rolls that are driven by a drive device to feed the electrical steel strips in a superposed state into a die having a plurality of punching processes in sequence; joining a part or all of the superposed electrical steel strips together before entering the die or at an upstream stage portion of the die after feeding out the electrical steel strips from the pair of upper and lower feed rolls; and punching simultaneously the plurality of electrical steel strips in a superposed state in the die.

A method of manufacturing a metal component includes performing a test stamping process on a test sheet metal blank, generating a strain map of the test sheet metal blank for the test stamping process, generating a lubrication program based on the strain map, applying lubrication to the sheet metal according to the lubrication program, and stamping the sheet metal to form the metal component. The lubrication program is configured to control a lubrication system to apply lubrication to sheet metal in a non-uniform distribution across the sheet metal. The non-uniform distribution correlates to the strain map.

A method of manufacturing a metal component includes performing a test stamping process on a test sheet metal blank, generating a strain map of the test sheet metal blank for the test stamping process, generating a lubrication program based on the strain map, applying lubrication to the sheet metal according to the lubrication program, and stamping the sheet metal to form the metal component. The lubrication program is configured to control a lubrication system to apply lubrication to sheet metal in a non-uniform distribution across the sheet metal. The non-uniform distribution correlates to the strain map.

A roll feeder is usable to intermittently feed a coiled material. The roll feeder includes a paired first roll and second roll, a meandering detector, a pressing component, and a controller. The paired first roll and second roll are disposed so as to clamp the coiled material. The paired first roll and second roll are configured to feed the coiled material in a conveyance direction. The meandering detector is configured to detect meandering of the coiled material from a specific conveyance position in a width direction perpendicular to the conveyance direction of the coiled material. The pressing component is configured to press the first roll against the coiled material being conveyed. The controller is configured to control the pressing component so as to correct the meandering based on detection by the meandering detector.

A roll feeder is usable to intermittently feed a coiled material. The roll feeder includes a paired first roll and second roll, a meandering detector, a pressing component, and a controller. The paired first roll and second roll are disposed so as to clamp the coiled material. The paired first roll and second roll are configured to feed the coiled material in a conveyance direction. The meandering detector is configured to detect meandering of the coiled material from a specific conveyance position in a width direction perpendicular to the conveyance direction of the coiled material. The pressing component is configured to press the first roll against the coiled material being conveyed. The controller is configured to control the pressing component so as to correct the meandering based on detection by the meandering detector.

A roll feeder is usable to convey a hoop material to a pressing machine. The roll feeder includes a paired first roll and second roll configured to be disposed so as to clamp the hoop material and feed the hoop material along a conveyance direction, a motor configured to drive at least one of the first roll and the second roll, and a controller configured to control drive of the motor. The controller includes a process drive instruction component configured to drive the motor so as to feed the hoop material to a pressing machine side in between one press working and next press working, and a working drive instruction component configured to drive the motor so as to feed the hoop material to the pressing machine side during press working.