The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Nov. 14, 2008
Kinshiro Naito, Kanagawa, JP;
Tokuzo Sekiyama, Gunma, JP;
Toshiaki Otake, Kanagawa, JP;
Haruhiko Kuriyama, Kanagawa, JP;
Kinshiro Naito, Kanagawa, JP;
Tokuzo Sekiyama, Gunma, JP;
Toshiaki Otake, Kanagawa, JP;
Haruhiko Kuriyama, Kanagawa, JP;
Amada Company, Limited, Kanagawa, JP;
Abstract
A servo drive system of a press machine includes a ram, an operation shaft which vertically moves the ram, and a servo motor which operates as a power source of the ram and which generates ram pressure using a torque based on at least one speed-torque characteristic of the servo motor. The operation shaft is directly driven using the servo motor. The at least one speed-torque characteristic of the servo motor is set in a manner such that a motor torque of the servo motor at which a capacity of electric energy supplied by a servo amplifier is determined becomes the motor torque at which an optimal punching pattern of the ram is generated from a light load to a heavy load according to a type of workpiece to be worked by the press machine.