Abstract: Solid metal protrusions are formed by the method including: clamping and fixing the metal workpiece between a support die and a pressure die; pressing end cross sections of two or more outer peripheral end parts of the metal workpiece fixed between the support die and the pressure die at a temperature lower than a softening point of a metal used as the metal workpiece from a direction perpendicular or oblique to an upright direction of the protrusions to be formed on one surface of the metal workpiece by press molding using a pressing die or a pressing jig; undergoing plastic flows of metal into through-holes formed as recessed parts that serve as female molds for forming the protrusions in at least one of the support die and the pressure die; and forming solid protrusions on the surface of the metal workpiece.

Abstract: Solid metal protrusions are formed by the method including: clamping and fixing the metal workpiece between a support die and a pressure die; pressing end cross sections of two or more outer peripheral end parts of the metal workpiece fixed between the support die and the pressure die at a temperature lower than a softening point of a metal used as the metal workpiece from a direction perpendicular or oblique to an upright direction of the protrusions to be formed on one surface of the metal workpiece by press molding using a pressing die or a pressing jig; undergoing plastic flows of metal into through-holes formed as recessed parts that serve as female molds for forming the protrusions in at least one of the support die and the pressure die; and forming solid protrusions on the surface of the metal workpiece.

Abstract: Solid metal protrusions are formed by a method including: clamping and fixing the metal workpiece with a support die and a pressure die; pressing each cross section of an outer peripheral end parts of the metal workpiece fixed with the support die and the pressure die at a temperature lower than a softening point of a metal used as the metal workpiece from a direction perpendicular or oblique to an upright direction of the protrusions to be formed on one surface of the metal workpiece by press molding using a pressing die or a pressing jig; undergoing plastic flows of metal into through-holes formed as recessed parts that serve as female molds for forming the protrusions in at least one of the support die and the pressure die; and forming solid protrusions on the surface of the metal workpiece.

Abstract: Solid metal protrusions are formed by a method including: clamping and fixing the metal workpiece with a support die and a pressure die; pressing each cross section of an outer peripheral end parts of the metal workpiece fixed with the support die and the pressure die at a temperature lower than a softening point of a metal used as the metal workpiece from a direction perpendicular or oblique to an upright direction of the protrusions to be formed on one surface of the metal workpiece by press molding using a pressing die or a pressing jig; undergoing plastic flows of metal into through-holes formed as recessed parts that serve as female molds for forming the protrusions in at least one of the support die and the pressure die; and forming solid protrusions on the surface of the metal workpiece.

Abstract: A method for manufacturing metal parts with split ends joined. An end of a metal plate or solid metal rod is split. The length of the incision is adjusted and a smooth split face is formed. A metal plate is secured by pinching both sides with a clamping device, or a solid metal rod is pinched on opposite portions on the periphery with a clamping device. The plate/rod is split longitudinally by slitting or cleaving the plate/rod by pressing a slitting or cleaving punch against the face of one end of the plate/rod. The splitting is advanced by repeating the operation of pressing the punch against the cleft of the splitting. In each splitting operation, the position of the clamping device is moved in advance of the next pressing by a stroke corresponding to the distance from one end of the plate/rod, to the distal end of a split-desired portion.

Abstract: 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.

Abstract: Provided are a method for splitting longitudinally an end part of a metal plate or a metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a metal part manufactured by such method; and a method for bonding such metal part.

Abstract: Provided is a method for internal splitting in the cross-section of the end of a metal plate or a metal rod. The method permits free-adjustment of the width and length of incision of the internal split and gives smooth and even surfaces to the cut face of the internal split for an accurate internal splitting in the cross-section of the end of a metal plate or a metal rod only at the desired position. The invention also provides a method for manufacturing a metal container and a metal pipe by that splitting method and a method for joining metal components. The present invention includes the steps of: a process to form a crevice by abutting a splitting punch or a cleaving punch on the cross-section of the end of the metal plate or the metal rod using a means for determining the width of the internal split; and a process to advance the internal splitting further by repeating the press-splitting on the crevice multiple times using a splitting punch or a cleaving punch.

Abstract: Provided are a method for manufacturing a Figure-T shaped metal part using a metal plate or a metal rod split by a method for splitting longitudinally an end part of the metal plate or the metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a Figure-T shaped metal part manufactured by such method.

Abstract: Provided are a method for splitting longitudinally an end part of a metal plate or a metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a metal part manufactured by such method; and a method for bonding such metal part.

Abstract: Provided are a method for splitting longitudinally an end part of a metal plate or a metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a metal part manufactured by such method; and a method for bonding such metal part.

Abstract: Provided are a method of 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.

Abstract: Provided are a method for manufacturing a Figure-T shaped metal part using a metal plate or a metal rod split by a method for splitting longitudinally an end part of the metal plate or the metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a Figure-T shaped metal part manufactured by such method.

Abstract: Provided is a method for bonding metal parts manufactured by splitting longitudinally an end part of a metal plate or a metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed.

Abstract: Provided is a method for internal splitting in the cross-section of the end of a metal plate or a metal rod. The method permits free-adjustment of the width and length of incision of the internal split and gives smooth and even surfaces to the cut face of the internal split for an accurate internal splitting in the cross-section of the end of a metal plate or a metal rod only at the desired position. The invention also provides a method for manufacturing a metal container and a metal pipe by that splitting method and a method for joining metal components. The present invention includes the steps of: a process to form a crevice by abutting a splitting punch or a cleaving punch on the cross-section of the end of the metal plate or the metal rod using a means for determining the width of the internal split; and a process to advance the internal splitting further by repeating the press-splitting on the crevice multiple times using a splitting punch or a cleaving punch.

Abstract: Provided are a method for splitting longitudinally an end part of a metal plate or a metal rod having a rectangular, polygonal, or elliptical shape, in which the length of incision in the split portion can be freely adjusted and smooth split face can be formed; a metal part manufactured by such method; and a method for bonding such metal part.