Title:
成形方法及び成形装置
Document Type and Number:
Japanese Patent JP6920922
Kind Code:
B2
Abstract:
Provided are a forming method and a forming apparatus which can secure strength after forming while suppressing deformation.The forming method of the present invention includes a burring step and a pressing step. In the burring step, a branch pipe is formed by causing a cylindrical peripheral wall of a cylindrical member (workpiece) having the peripheral wall to project in an outside direction in a tubular shape. In the pressing step, a distal end surface of the branch pipe is pressed toward a proximal end portion of the branch pipe. In the pressing step, the distal end surface of the branch pipe can be pressed by an end surface pressing punch in a state where a burring punch is inserted in the branch pipe.
Inventors:
Tomomi Hayase
Goldman Ryuichi
Goldman Ryuichi
Application Number:
JP2017160244A
Publication Date:
August 18, 2021
Filing Date:
August 23, 2017
Export Citation:
Assignee:
KYB Corporation
International Classes:
B21D19/08; B21D37/08
Domestic Patent References:
| JP6344039A | ||||
| JP2014057997A | ||||
| JP2003285121A | ||||
| JP2012215224A |
Foreign References:
| CN201841206U | ||||
| GB759146A | ||||
| FR1100159A1 |
Attorney, Agent or Firm:
Patent Business Corporation Grund Patent Office