Title:
METHOD AND DEVICE FOR DYNAMICALLY DAMPING MAGNETIC REPULSION MECHANISM
Document Type and Number:
Japanese Patent JP2587901
Kind Code:
B2
Abstract:
PURPOSE: To eliminate a cause for an uncontrollable punching action during high-speed punching by applying a damping pulse for removing the kinetic energy from a moving member to a primary stator coil during the bounce of the moving member.
CONSTITUTION: A system is adjusted at an operation point where the contact between an annular disk 18 and a primary stator coil 22 starts to occur. For this adjustment, the kinetic energy for forming an punched opening on a workpiece is applied to a punch body 14' by a stroke control device 62 to apply the drive pulse width. The drive pulse width is correspondingly adjusted by a punch rate control device 64 so that the bounce of the downward punch stroke occurs to increase the operating speed. The drive pulse is controlled via a fine adjustment of the damping pulse width by a drive circuit 20 including a damping drive circuit 20', thereby a cause for an uncontrollable punching action during high-speed punching can be eliminated.
Inventors:
UIRIAMU KAABAU JUNIA
MAAKU RAPURANTSU
DEIBITSUDO RONGU
KURISUTOFUA SETSUTSUAA
KAARU SUTOROMUZU
MAAKU RAPURANTSU
DEIBITSUDO RONGU
KURISUTOFUA SETSUTSUAA
KAARU SUTOROMUZU
Application Number:
JP28936693A
Publication Date:
March 05, 1997
Filing Date:
November 18, 1993
Export Citation:
Assignee:
INTAANASHONARU BIJINESU MASHIINZU CORP
International Classes:
B21D28/00; B26D5/08; B26F1/02; B30B1/42; G05D19/02; H02K33/02; H05K3/00; H05K3/04; H05K1/03; (IPC1-7): B26F1/02; B26D5/08; H05K3/00
Attorney, Agent or Firm:
Koichi Tonmiya (1 person outside)
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