A square tubing swager is an electromechanically operated swaging machine for square steel tubing powered by an electric motor whose mechanical output is connected to a clutch assembly which operates an angle worm drive. The output of the angle drives dual two strand sprockets. These sprockets are connected through a series of roller chains and additional sprockets which drive four cam cross shafts. These cam shafts are set in four corresponding slide blocks assemblies within a jaw mount. The invention would be provided with various sized jaws for various sizes of square steel tubing. During use, the steel stock is inserted within the jaw area and the motor energized. The jaws then form the steel stock inward allowing the deformed area to be inserted within the hollow cavity of undeformed steel stock of the same size.

A square tubing swager is an electromechanically operated swaging machine for square steel tubing powered by an electric motor whose mechanical output is connected to a clutch assembly which operates an angle worm drive. The output of the angle drives dual two strand sprockets. These sprockets are connected through a series of roller chains and additional sprockets which drive four cam cross shafts. These cam shafts are set in four corresponding slide blocks assemblies within a jaw mount. The invention would be provided with various sized jaws for various sizes of square steel tubing. During use, the steel stock is inserted within the jaw area and the motor energized. The jaws then form the steel stock inward allowing the deformed area to be inserted within the hollow cavity of undeformed steel stock of the same size.

A pipe processing tool that is configured to deform the end of a pipe so that the circumferential shape of the end of the pipe generally matches the circumferential shape of an adjacent pipe end. Matching the circumferential shapes of the pipe ends is advantageous during a pipe attachment process. The pipe processing tool can include a deformation ring with a plurality of pipe deformation members. Each pipe deformation member faces radially inward and is actuatable in a radial direction toward and away from the center of the deformation ring in order to permit engagement with the pipe. Each pipe deformation member is individually and separately actuatable from the other pipe deformation members so that the circumferential shapes of the pipes can be altered by controlling suitable ones of the pipe deformation members.

A pipe processing tool that is configured to deform the end of a pipe so that the circumferential shape of the end of the pipe generally matches the circumferential shape of an adjacent pipe end. Matching the circumferential shapes of the pipe ends is advantageous during a pipe attachment process. The pipe processing tool can include a deformation ring with a plurality of pipe deformation members. Each pipe deformation member faces radially inward and is actuatable in a radial direction toward and away from the center of the deformation ring in order to permit engagement with the pipe. Each pipe deformation member is individually and separately actuatable from the other pipe deformation members so that the circumferential shapes of the pipes can be altered by controlling suitable ones of the pipe deformation members.

There is provided a hole widening method including a preparing process of preparing a forming tool which has a diameter-increasing portion increasing in diameter from a front end side toward a rear end side and a line-shaped projection formed to protrude outward from a surface of the diameter-increasing portion, and a workpiece in which a pilot hole is formed; and a hole widening process of successively widening the pilot hole by pushing the forming tool into the pilot hole such that the line-shaped projection of the forming tool comes into point contact with a part of a circumferential edge portion of the pilot hole in the workpiece two times or more, and forming a stretched flange.

There is provided a hole widening method including a preparing process of preparing a forming tool which has a diameter-increasing portion increasing in diameter from a front end side toward a rear end side and a line-shaped projection formed to protrude outward from a surface of the diameter-increasing portion, and a workpiece in which a pilot hole is formed; and a hole widening process of successively widening the pilot hole by pushing the forming tool into the pilot hole such that the line-shaped projection of the forming tool comes into point contact with a part of a circumferential edge portion of the pilot hole in the workpiece two times or more, and forming a stretched flange.

Disclosed is an example of a method of manufacturing a pressed product including a substantially U-shaped main body and an undercut flange situated in the main body, in which an angle modification process can be eliminated. In the disclosed method, a third bent part, which is situated away from a first bent part towards a second bent part on a metallic sheet by a first length or more, is bent such that the first bent part is moved towards a first press direction and the undercut flange is moved towards a second press direction. The first press direction and the second press direction are opposite to each other. The first length is a length from a boundary between the undercut flange and a first plate portion to a tip of the undercut flange sized by projecting the undercut flange on an imaginary surface orthogonal to the first plate portion.

Disclosed is an example of a method of manufacturing a pressed product including a substantially U-shaped main body and an undercut flange situated in the main body, in which an angle modification process can be eliminated. In the disclosed method, a third bent part, which is situated away from a first bent part towards a second bent part on a metallic sheet by a first length or more, is bent such that the first bent part is moved towards a first press direction and the undercut flange is moved towards a second press direction. The first press direction and the second press direction are opposite to each other. The first length is a length from a boundary between the undercut flange and a first plate portion to a tip of the undercut flange sized by projecting the undercut flange on an imaginary surface orthogonal to the first plate portion.

A pipe processing tool that is configured to deform the end of a pipe so that the circumferential shape of the end of the pipe generally matches the circumferential shape of an adjacent pipe end. Matching the circumferential shapes of the pipe ends is advantageous during a pipe attachment process. The pipe processing tool can include a deformation ring with a plurality of pipe deformation members. Each pipe deformation member faces radially inward and is actuatable in a radial direction toward and away from the center of the deformation ring in order to permit engagement with the pipe. Each pipe deformation member is individually and separately actuatable from the other pipe deformation members so that the circumferential shapes of the pipes can be altered by controlling suitable ones of the pipe deformation members.

A pipe processing tool that is configured to deform the end of a pipe so that the circumferential shape of the end of the pipe generally matches the circumferential shape of an adjacent pipe end. Matching the circumferential shapes of the pipe ends is advantageous during a pipe attachment process. The pipe processing tool can include a deformation ring with a plurality of pipe deformation members. Each pipe deformation member faces radially inward and is actuatable in a radial direction toward and away from the center of the deformation ring in order to permit engagement with the pipe. Each pipe deformation member is individually and separately actuatable from the other pipe deformation members so that the circumferential shapes of the pipes can be altered by controlling suitable ones of the pipe deformation members.