公开(公告)号：US20200238560A1

公开(公告)日：2020-07-30

申请号：US16743111

申请日：2020-01-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiromichi NAKATA ,  Noboru SHIMAMOTO ,  Takuya SUKEDA ,  Akinori TOMIOKA ,  Naoki HIRAI

IPC: B26F1/38 ,  B26D1/157 ,  B26D1/22 ,  B26F1/44 ,  B26F1/42

Abstract: Provided are rotary dies that can cut amorphous materials while having suppressed wear. The rotary dies are adapted to cut a target, and include an anvil roller, a die cutter, a first elastic portion, and a second elastic portion. The anvil roller rotates while supporting the target. The die cutter has a projecting edge for cutting the target and is configured to rotate. The first elastic portion is arranged on the outer peripheral surface of the anvil roller, and elastically deforms upon contacting the rear surface of the target when the target is cut. The second elastic portion is arranged on the outer peripheral surface of the die cutter, and elastically deforms upon contacting the front surface of the target when the target is cut. The hardness of the first elastic portion is greater than that of the second elastic portion.

公开(公告)号：US20210257159A1

公开(公告)日：2021-08-19

申请号：US17166451

申请日：2021-02-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noboru SHIMAMOTO

IPC: H01F41/02 ,  H01F1/153 ,  H05B6/06 ,  H05B6/10

Abstract: Provided is a method for producing a workpiece made of nano-crystal soft magnetic material, capable of efficiently producing a workpiece. The method sandwiches at least one metal sheet made of amorphous soft magnetic material between a punch and a die and punches the workpiece from the metal sheet to produce the workpiece. The method heats the punch to a crystallization starting temperature or higher at which the amorphous soft magnetic material crystallizes into nano-crystal soft magnetic material. The method includes a step of punching the workpiece from the metal sheet while heating the metal sheet with the punch and a step of crystallizing the amorphous soft magnetic material of the workpiece into nano-crystal soft magnetic material by making the workpiece after punched absorbed on the punch.

公开(公告)号：US20190232359A1

公开(公告)日：2019-08-01

申请号：US16247897

申请日：2019-01-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noboru SHIMAMOTO

IPC: B21J5/02 ,  B21J13/02 ,  B21J5/12

CPC classification number: B21J5/02 ,  B21J5/12 ,  B21J13/02

Abstract: The forging apparatus includes: a fixed punch 21 in which a tapered part 21a for molding the diameter enlarged part is formed; a die 30 arranged so as to surround an outer periphery of the fixed punch 21; and a movable punch 10 that is arranged above the fixed punch 21 so as to be opposed to the fixed punch 21. The die 30 is floatingly supported and includes a protruding part 33a for molding the groove on an inner peripheral surface thereof, and when the movable punch 10 is lowered, an annular blank 40 set between the fixed punch 21 and the die 30 is pressed, and the annular member is molded, the die 30 is lowered along with the movable punch 10, and the groove is molded on the outer peripheral surface of the diameter enlarged part while molding the diameter enlarged part.