A hemming device includes an anvil for placing a work, a presser material handling portion, a conveyance robot, and a roller hemming robot. The anvil includes an anvil main body portion, a positioning device, a gripping device, and a device-side ATC device to be attached to and detached from a conveyance-robot side ATC device. The presser material handling portion includes a frame portion having a shape corresponding to a shape of the work, a positioning device, a gripping device, a presser provided to press the inner panel at a position at which the presser does not interfere with a final shape, and a device-side ATC device to be attached to and detached from the conveyance-robot side ATC device. With this configuration, processing time is reduced and replacement operation of the anvil is simplified, and therefore productivity is improved.

A roller hemming processing device that has first to fifth processing surfaces and that rolls the respective processing surfaces while pressing the respective processing surfaces against a hemming flange in such a posture that an axis of a roller is parallel to an outer panel is used. A pre-processed portion obtained by bending the hemming flange to form a right angle with an inner flange is molded by using the third, fifth and fourth processing surfaces in a stepwise manner such that the angle of inclination with respect to the axis decreases. The pre-processed portion is inclined toward an inner panel side by using the second processing surface. An inclined wall portion that is inclined to contact the inner panel, and a hem portion that is in close contact with the inner panel are molded by simultaneously using the first and second processing surfaces.

A die includes a plastic positioning body configured to position a door outer panel to be set in a predetermined posture by being abutted along an edge of an edge of the door outer panel. This positioning body includes a metal inset (or metal inserts) having a higher surface hardness than the plastic at application portion (or portions) where force is applied from areas when these areas, in which deformation resistance at the door outer panel is locally increased, are bent back. The metal insert is in a half-embedded state in which one part of the metal insert(s) is exposed from a surface of the application portion while the remaining part is embedded inside the application portion.

A die includes a plastic positioning body configured to position a door outer panel to be set in a predetermined posture by being abutted along an edge of an edge of the door outer panel. This positioning body includes a metal inset (or metal inserts) having a higher surface hardness than the plastic at application portion (or portions) where force is applied from areas when these areas, in which deformation resistance at the door outer panel is locally increased, are bent back. The metal insert is in a half-embedded state in which one part of the metal insert(s) is exposed from a surface of the application portion while the remaining part is embedded inside the application portion.

A gas-charging and flanging machine (10) includes a sealed chamber (13a). The gas-charging and flanging machine is used for carrying out, inside the sealed chamber, charging of a gas into a workpiece (20) and flanging of the workpiece (20) by spinning and pressing. The gas-charging and flanging machine charges a gas into a workpiece and flanges the workpiece on the same machine such that production efficiency can be improved.

A roll-forming manufacturing method of a roller bearing seal case includes (a) roll-forming, from a cylindrical ring, a first profiled ring having a first section extending along cylinder axis of the cylindrical ring and a second section extending from the first section inward toward the cylinder axis, (b) applying outward pressure to the first section, in direction away from the cylinder axis, to round the first section, and (c) roll-forming a second profiled ring from the first profiled ring.

A panel hemming device includes: a fixing die on which a panel is placed and that has a supporting surface stepped upward to be parallel with an end of the panel; a hemming shaft having a first side coupled to a tool and having a second side to which a hemming roller, which comes in contact with a top of the supporting surface when fixed to the fixing die, is coupled; a rotary shaft having a first side coupled to the first side of the hemming shaft to receive torque and having a second side coming in contact with a bottom of the fixing die when fixed to the fixing die; and a case supporting an outer surface of the hemming shaft disposed through the case and coupled to a first end of the rotary shaft such that the rotary shaft can rotate upward or downward with respect to the first end.

A roll-forming manufacturing method of a roller bearing seal case includes (a) roll-forming, from a cylindrical ring, a profiled ring including a first section extending at least along a cylinder axis of the cylindrical ring and a second section extending from the first section inward toward the cylinder axis, and (b) trimming the second section to expand the first aperture to achieve location and geometry according to design parameters. A roll-forming manufacturing method of a roller bearing seal case includes (a) roll-forming, from a cylindrical ring, a first profiled ring having a first section extending along cylinder axis of the cylindrical ring and a second section extending from the first section inward toward the cylinder axis, (b) applying outward pressure to the first section, in direction away from the cylinder axis, to round the first section, and (c) roll-forming a second profiled ring from the first profiled ring.

Provided are a method for machining the outer circumference of a metal end cross-section, the method being capable of easily forming at least any of a deep groove, a deep recess, and a flange which are smooth and uniform in the longitudinal direction of a metal rod or metal pipe in the periphery of the cross-section of any of the end part of the metal rod or metal pipe, the drawn end part of the metal rod or metal pipe, and the hub hole forming part of the metal pipe; and a method for joining a metal component obtained by the machining method with another member. The machining method of the present invention is characterized in that: splitting is advanced by successively repeating press forming operation multiple times by using a slitting punch, in which a tip part has a sharp cutting edge, and the cutting edge is formed so as to have a shape equal to or partly equal to the outer shape of the cross section of a metal end part and so as to have a diameter smaller than the outer diameter of the cross section of the splitting object; and in order to control the depth of metal cracking cleft created with each press forming operation, a pressing die for pinching the outside of a metal rod or at least a pressing die of one side of pressing dies for pinching the inside and the outside of a metal pipe is disposed while its position is moved according to the distance of a split portion.

A method of forming a vehicle panel includes deforming a sheet metal workpiece between stamping tools to form a first and second edges that converge at a corner of the workpiece's main surface. The first edge is defined by a junction of the main surface and a first flange. The second edge is defined the main surface and a second flange. Forming the first and second edges includes deforming the workpiece so that the second flange has a first region bent to a first angle relative to the main surface and an unwinding region bent to an angle that unwinds from the first region as the second flange approaches the corner. The method includes deforming the workpiece between a second set of stamping tools that deform the first flange and the unwinding region of the second flange until the first and second flanges are bent greater than 90.