Metal member manufacturing method, indenter and metal member manufacturing apparatus

A metal member manufacturing apparatus comprising:

• a first turntable configured to rotate around a first rotation axis parallel to a first direction as a press direction;
• a first indenter attached to said first turntable;
• a first actuator configured to move said first indenter in the first direction to press said first indenter to a metal material;
• a first load cell configured to measure a load acting on said first indenter;
• a guide extending into a second direction perpendicular to the first direction;
• a beam extending in a third direction perpendicular to the first direction and the second direction;
• a base rod attached to said beam movable along said beam;
• a first drive unit configured to move said beam along said guide;
• and
• a second drive unit configured to move said base rod along said beam,
• wherein the metal material has a hole formation region in which one through-hole is to be opened,
• wherein said hole formation region comprises a first region and a second region,
• wherein said first indenter comprises a first press surface which is off-centered from the first rotation axis,
• wherein said first actuator presses said first press surface against the first region when said first turntable is in a first rotation position, and presses said first press surface against the second region when said first turntable is in a second rotation position different from the first rotation position, and
• wherein said first turntable is attached to said base rod to be rotatable around the first rotation axis.

A metal member manufacturing apparatus comprising:

• a first turntable configured to rotate around a first rotation axis parallel to a first direction as a press direction;
• a first indenter attached to said first turntable;
• a first actuator configured to move said first indenter in the first direction to press said first indenter to a metal material;
• a first load cell configured to measure a load acting on said first indenter;
• and
• a carrying unit,
• wherein the metal material has a hole formation region in which one through-hole is to be opened,
• wherein said hole formation region comprises a first region and a second region,
• wherein said first indenter comprises a first press surface which is off-centered from the first rotation axis,
• wherein said first actuator presses said first press surface against the first region when said first turntable is in a first rotation position, and presses said first press surface against the second region when said first turntable is in a second rotation position different from the first rotation position, and
• wherein said carrying unit comprises:
• a first roller configured to carry said metal material into a second direction perpendicular to the first direction;
• and
• a second roller configured to carry said metal material into a third direction perpendicular to the first direction and the second direction.

A metal member manufacturing apparatus comprising:

• a turntable configured to rotate around a first rotation axis parallel to a first direction;
• a first indenter attached to said turntable movable into the first direction;
• a first actuator configured to move said first indenter into the first direction to press said first indenter against said metal material;
• a first load cell configured to measure a load acting on said first indenter;
• a second indenter attached to said turntable movable into the first direction;
• a second actuator configured to move said second indenter into the first direction to press said second indenter against said metal material;
• and
• a second load cell configured to measure a load acting on said second indenter,
• wherein said first indenter comprises a first press surface which is circular,
• wherein said second indenter comprises a second press surface having a shape surrounded by a first circumference of a first circle and a second circumference of a second circle which is concentric with the first circle and which is larger than the first circle,
• wherein a central axis of said first press surface passes through a center of said first press surface, is parallel to the first direction, and is arranged on a circumference of a circle centering the first rotation axis,
• wherein a central axis of said second press surface passes through a center of said second press surface, is parallel to the first direction, and is arranged on the circumference of the circle,
• wherein said metal material comprises a hole formation region in which one through-hole is to be opened,
• wherein said hole formation region comprises a first region and second regions provided around the first region,
• wherein said first actuator presses said first press surface against the first region when said turntable is in the first rotation position, and said second actuator presses said second press surface against the second region when said turntable is in the second rotation position which is different from the first rotation position.

A metal member manufacturing apparatus comprising:

• an indenter set comprising a first indenter and a second indenter;
• an indenter holder configured to hold said indenter set such that said first indenter and said second indenter are independently movable into a first direction;
• a loading block;
• an actuator configured to move said loading block into the first direction;
• and
• a shim exchange unit,
• wherein said indenter set is arranged between said loading block and said metal material,
• wherein said metal material has a hole formation region in which one through-hole is to be opened,
• wherein said hole formation region comprises a first region and a second region,
• wherein when said shim exchange unit arranges a first shim between said loading block and said indenter set, said actuator moves said loading block toward said metal material, and said first shim comes in contact with said loading block and presses said first indenter against the first region,
• wherein when said shim exchange unit arranges a second shim between said loading block and said indenter set, said actuator moves said loading block toward said metal material, and said second shim comes in contact with said loading block and presses said second indenter against the second region.