Method of regulating a servo drive system and servo drive system of a press machine

A servo drive system of a press machine uses a servo motor (30a,30b) as a driving source of a ram (22). The servo motor (30a,30b) uses a torque based on speed-torque characteristics of a motor. Necessary ram pressure can be generated without utilizing inertia of a mechanism. The system employs the s...

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Bibliographische Detailangaben
Hauptverfasser:	KURIYAMA, HARUHIKO, OTAKE, TOSHIAKI, SEKIYAMA, TOKUZO, NAITO, KINSHIRO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSES PRESSES IN GENERAL PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A servo drive system of a press machine uses a servo motor (30a,30b) as a driving source of a ram (22). The servo motor (30a,30b) uses a torque based on speed-torque characteristics of a motor. Necessary ram pressure can be generated without utilizing inertia of a mechanism. The system employs the servo motor (30a,30b) in which if a load is received from a work during a lowering operation of the ram (22), motor speed is reduced according to the load, thereby reducing the lowering speed of the ram (22). The servo motor (30a,30b) directly drives an operation shaft (20) which vertically moves the ram (22).