Title:
内面規制工具、プラグ、芯金、熱間圧延機、プレス穿孔機及び抽伸機
Document Type and Number:
Japanese Patent JP5482975
Kind Code:
B1
Abstract:
An inner surface regulation tool includes a mandrel, a plug which is detachably connected to the mandrel, and a connection member which connects the plug and the mandrel by a magnetic force. One of the plug and the mandrel includes a column-shaped portion which extends in an axial direction of the one, and the other of the plug and the mandrel includes a joining hole which extends in an axial direction of the other and into which the column-shaped portion is inserted. In addition, the connection member is a permanent magnet which is attached to at least one of the column-shaped portion and the joining hole.
Inventors:
Yamane Koji
Kazumune Shimoda
Tomio Yamakawa
Yuji Inoue
Kazumune Shimoda
Tomio Yamakawa
Yuji Inoue
Application Number:
JP2013547758A
Publication Date:
May 07, 2014
Filing Date:
August 22, 2013
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
B21B25/06; B21B19/04; B21C1/24; B21C3/16; B21C23/08; B21C25/04
Domestic Patent References:
| JP2009125785A | 2009-06-11 | |||
| JPS61177702U | 1986-11-06 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata