JP2005000994A5 - - Google Patents

Claims (2)

  The outer diameter of the lower part of the container, which has a cylindrical inner surface groove that penetrates and has a circular cross section on the outer surface, has a cylindrical shape with a bottom where the upper part of the groove part leads to the upper air, and a part of the bottom of this groove Is made slightly smaller than the inner diameter of the upper part of the groove part of the die, which is a cylindrical inner surface groove communicating with the lower air, and the bottom surface of the container and the groove bottom above the die do not touch each other In this way, the material loaded in the container is introduced into the container entrance by using the cavity formed by inserting the container in the groove above the die and the upper and lower sides communicating with the air as a groove for processing. The pusher placed is used to increase the push-in diameter into the lower die groove and push out from the cylindrical inner groove at the bottom of the die. Forward extrusion processing method upsetting torsion performed while rotating about a non fixed as its central axis the other hand.   The outer diameter of the lower part of the container having a circular inner surface groove with a cylindrical inner surface groove penetrated, and the outer diameter of the upper part of a die having a circular shape of the outer surface horizontal cross section with a cylindrical inner surface groove penetrated, Both are manufactured slightly smaller than the inner diameter of a holder having an inner groove with a circular cross section passing through, the container and the die are placed in the holder, and the container and the die do not contact each other. Using the hollow portions formed in the upper and lower air spaces formed by inserting them separately as grooves for processing, the material loaded in the container is pushed downward by a pusher disposed at the container entrance. The process of extruding downward while increasing the diameter of the material is fixed so that the holder is not rotated on the gantry, and one of the die and the container is fixed. Fixed against rotation to the base, the front extrusion method upsetting torsion performed while rotating about its central axis and another one.