To provide a punch die structure, a powder compacting equipment and a powder compacting method for suppressing the occurrence of stress concentration in the die without changing a shape of a powder compacting body.
The punch die 300 is used to form a cylindrical member by powder compacting which has a substantially cylindrical shape and has a protrusion portion formed on the inner peripheral side thereof to protrude in the axial direction or a stepped portion or a concave portion formed on the inner peripheral side thereof in the radial direction. The punch die has a substantially cylindrical shape, and has a protrusion portion 330 formed on at least a part of the inner peripheral surface or the outer peripheral surface thereof to protrude toward the center axis. The punch die is divided into two upper and lower parts at a surface forming the same surface as a lower surface of the protrusion portion, and the division surfaces are mechanically connected to each other or adhered to each other by adhesive. The powder compacting equipment is equipped with the punch die, and a powder compacting method uses the punch die.
KOBAYASHI KINYA
JP2009113103A | 2009-05-28 | |||
JP2008272795A | 2008-11-13 | |||
JPH08281493A | 1996-10-29 | |||
JP2006342397A | 2006-12-21 |
Yuji Toda
Next Patent: CONNECTING TOOL FOR WELDING PIPING