Forming device and forming method

A forming method of forming a metal pipe including a pipe portion and a flange portion by forming a heated metal pipe material with a forming die,

• in which the forming die includes a first main die, a first double-acting die that is movable relative to the first main die, and an angular portion formed by a first plane coincident with a first forming surface and a second plane coincident with a second forming surface that intersect each other in a cross-sectional view,
• the second forming surface is movable relative to the first forming surface,
• the first main die includes the first forming surface that forms the pipe portion and a flange forming surface that intersects with the first forming surface and forms the flange portion, and
• the first double-acting die includes the second forming surface that forms the pipe portion, and
• a second main die that includes the first forming surface and faces the first main die, and a second double-acting die that includes the second forming surface and is movable relative to the second main die,
• the method comprising:
• during the forming, forming the flange portion by the flange forming surface of the first main die, and moving the second forming surface in a pressing direction in which the heated metal pipe material is pressed in a stage before the angular portion and the heated metal pipe material come into contact with each other.

A forming device that forms a metal pipe including a pipe portion and a flange portion, the forming device comprising:

• a forming die configured to form a heated metal pipe material,
• wherein the forming die includes
• a first main die,
• a first double-acting die that is movable relative to the first main die, and
• an angular portion formed by a first plane coincident with a first forming surface and a second plane coincident with a second forming surface that intersect each other in a cross-sectional view,
• the second forming surface is movable relative to the first forming surface,
• the first main die includes the first forming surface that forms the pipe portion and a flange forming surface that intersects with the first forming surface and forms the flange portion,
• the first double-acting die includes the second forming surface that forms the pipe portion, and
• the flange forming surface of the first main die forms the flange portion, and the second forming surface is configured to move in a pressing direction during forming in which the heated metal pipe material is pressed, thereby forming a corner portion on the heated metal pipe material, in a stage before hardening may be performed by the angular portion at a spot corresponding to the corner portion of the heated metal pipe material, and
• a second main die that includes the first forming surface and faces the first main die, and a second double-acting die that includes the second forming surface and is movable relative to the second main die.