Title:
MATERIAL-THICKENING ROLLER
Document Type and Number:
Japanese Patent JP3885626
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a material-thickening roller having a plurality of forming dies corresponding to a material-thickening step.
SOLUTION: A plurality of rollers 5-7 integrally tightened with each other are rotatably supported by bearings 12A and 12B on the inner circumferential side, and at least one of circumferential grooves 2-4 as the plurality of forming dies comprises a pair of side walls 6A and 7A formed of facing surfaces in the vicinity of outer circumferential parts of the adjacent rollers 5-7, and a bottom part formed of an outer circumferential surface of an annular insert 10 inserted in an annular groove 9 which is opened between the pair of side walls 6A and 7A and formed between the rollers 6 and 7.
Inventors:
Hideshi Sasano
Toshiki Kawai
Toshiyuki Suzuki
Naganawa Satoshi
Toshiki Kawai
Toshiyuki Suzuki
Naganawa Satoshi
Application Number:
JP2002078500A
Publication Date:
February 21, 2007
Filing Date:
March 20, 2002
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B21H1/04; B21H9/00; (IPC1-7): B21H9/00
Domestic Patent References:
| JP10286645A | ||||
| JP2002045942A | ||||
| JP2002331331A |
Attorney, Agent or Firm:
Masaki Goto
Yoshio Matsuda
Yoshio Matsuda
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