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公开(公告)号：US3152564A
公开(公告)日：1964-10-13
申请号：US13729061
申请日：1961-09-11
Applicant: ELASTIC DIE ENGINEERING COMPAN
Inventor： HENRY GARDNER DONALD
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US2112012A
公开(公告)日：1938-03-22
申请号：US9005936
申请日：1936-07-11
Applicant: GEN MACHINERY CORP
Inventor： BYERLEIN ARTHUR A
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1897462A
公开(公告)日：1933-02-14
申请号：US53900031
申请日：1931-05-21
Applicant: JOHN LEES
Inventor： ARTHUR CARTER
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1868637A
公开(公告)日：1932-07-26
申请号：US40449329
申请日：1929-11-02
Applicant: FIRM L SCHULER A G
Inventor： OTTO KUHNER
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1757737A
公开(公告)日：1930-05-06
申请号：US33881629
申请日：1929-02-09
Applicant: MARQUETTE TOOL & MFG CO
Inventor： RODE FREDRICH J
IPC: B21D24/02
CPC classification number: B21D24/02
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Patent Agency Ranking
公开(公告)号：US1629538A
公开(公告)日：1927-05-24
申请号：US2469525
申请日：1925-04-20
Applicant: MARQUETTE TOOL & MFG CO
Inventor： RODE FREDRICH J
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1578547A
公开(公告)日：1926-03-30
申请号：US75236924
申请日：1924-11-26
Applicant: BLISS E W CO
Inventor： PAGE FRANK C B
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1483204A
公开(公告)日：1924-02-12
申请号：US22794018
申请日：1918-04-11
Applicant: MARQUETTE TOOL & MFG CO
Inventor： DAVID STRAND
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US1401371A
公开(公告)日：1921-12-27
申请号：US22760818
申请日：1918-04-09
Applicant: RUDOLPH W GLASNER
Inventor： DAVID STRAND
IPC: B21D24/02
CPC classification number: B21D24/02
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公开(公告)号：US11826810B2
公开(公告)日：2023-11-28
申请号：US17076497
申请日：2020-10-21
Applicant: AIDA ENGINEERING, LTD.
Inventor： Yasuyuki Kohno , Kazufumi Tsuchida
IPC: B21D24/02
CPC classification number: B21D24/02
Abstract: A die cushion device includes four hydraulic cylinders that support a cushion pad, a die cushion load controller that controls each of the hydraulic cylinders and generates a die cushion load on the cushion pad, and a die cushion position controller that controls each of the hydraulic cylinders to control a position of the cushion pad. In a case where only a left part is produced with a left die by a press machine, the die cushion load controller performs die cushion load control on two hydraulic cylinders on the left side, and the die cushion position controller performs die cushion position control on two hydraulic cylinders on the right side.
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