Title:
プレス加工方法及び機械装置の製造方法
Document Type and Number:
Japanese Patent JP6874802
Kind Code:
B2
Abstract:
A pressing method capable of increasing processing accuracy with respect to a workpiece is realized.A method of performing pressing on a workpiece 11 using a press machine 1 including: a frame 2 having the reference axis, a lower die 6 supported by the frame 2, an upper die 7 supported by the frame 2 so as to enable retreating and approaching movement with respect to the lower die 6 in an axial direction of a reference axis C, and a hydraulic cylinder 5 configured to generate a force in a direction in which the upper die 7 approaches the lower die 6, the pressing method including: performing the pressing on the workpiece between the lower die and the upper die by causing the upper die 7 to approach the lower die 6 by using the hydraulic cylinder 5 in a state in which the workpiece 11 is disposed between the lower die 6 and the upper die 7, and performing the pressing on the workpiece 11 between the lower die 6 and the upper die 7, performing the pressing on the workpiece 11 in a state in which a shape of each of the frame 2, the lower die 6 and the upper die 7 has a rotationally symmetric shape about the reference axis C and in which the workpiece center axis coincides with the reference axis C.
Inventors:
Nobuyuki Hagiwara
Application Number:
JP2019153230A
Publication Date:
May 19, 2021
Filing Date:
August 23, 2019
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B30B15/00; B21J5/00; B21J5/02; B21J5/08; B30B1/06; B30B1/32
Domestic Patent References:
| JP2008080339A | ||||
| JP2008296241A |
Foreign References:
| US4360189 | ||||
| US20180193901 |
Attorney, Agent or Firm:
Sumio Tanai
Yuichiro Shimizu
Hiroki Ninai
Kiwa Patent Office
Yuichiro Shimizu
Hiroki Ninai
Kiwa Patent Office