Title:
PROGRESSIVE WORKING METHOD AND PROGRESSIVE WORKING DEVICE
Document Type and Number:
Japanese Patent JP2021137829
Kind Code:
A
Abstract:
To provide a progressive working method and a progressive working device capable of suppressing the deterioration of working accuracy when using a hoop material formed by cutting a mother material.SOLUTION: A progressive working method includes a carrying step (S3, S9) of carrying a coiled hoop material 7 while rotating, and a pressing step (S5, S11) of pressing the hoop material 7. The hoop material 7 is formed by cutting a wide mother material 8 into 2 pieces at a center part in a width direction. In the carrying step, the hoop material 7 is carried so as to turn a cutting surface on the same side with respect to a carrying direction.SELECTED DRAWING: Figure 4
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Inventors:
AKATSUKA TAKAYUKI
Application Number:
JP2020035783A
Publication Date:
September 16, 2021
Filing Date:
March 03, 2020
Export Citation:
Assignee:
TOSHIBA IND PRODUCTS & SYSTEMS CORP
International Classes:
B21C47/26; B21D43/02
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office