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Title:
HYDRAULIC SERVOMECHANISM
Document Type and Number:
Japanese Patent JPH0266301
Kind Code:
A
Abstract:

PURPOSE: To aim at miniaturizing a hydraulic servomechanism, at reducing noise and the running cost thereof by providing a hydraulic cylinder for performing servomotion, a servomotor adapted to be driven in accordance with an output from an encoder and a power converting mechanism for producing a hydraulic pressure in proportion to a variation in rotation of the servomotor.

CONSTITUTION: Hydraulic cylinders 2, 3 having piston rods 2a, 3a which are arranged in parallel with each other, are connected to hydraulic chambers A, B which are defined in a hydraulic cylinder 1 by a piston 1b, and a rack gear 5 is arranged on the face-to-face sides of the piston rods 2a, 3a. Further, a pinion gear 4 directly coupled to a servomotor 6 adapted to be driven by a servoamplifier 8 is meshed with the rack 5 for the piston rods 2a, 3a. Accordingly, the generation of hydraulic pressure and servocontrol are simulataneously carried out, thereby it is possible to eliminate the necessity of a hydraulic pressure generating circuit so as to miniaturize the circuit while miniaturizing the servomechanism, and to aim at reducing noise and the running cost thereof.


Inventors:
Fukumoto, Yoshinari
Application Number:
JP1988000215802
Publication Date:
March 06, 1990
Filing Date:
August 30, 1988
Export Citation:
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Assignee:
NEC KYUSHU LTD
International Classes:
F15B9/04; F15B7/00; (IPC1-7): F15B7/00; F15B9/04
Domestic Patent References:
JPS5212073U
JPS5431876A
JPH0216803B2



 
Next Patent: JPH0266302