Title:
DEVIATION PHASE MODULATOR FOR NUMERICAL CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JPS5866121
Kind Code:
A
Abstract:
PURPOSE:To move a work accurately, by detecting the movement of the work due to a command of a controlling computer and generating a servo command signal for backlash correction on a basis of the work moving command. CONSTITUTION:A deviation phase modulator 22 is connected to the output side of a controlling computer 21. The output of the deviation phase modulator 22 is connected to a resolver 26 through a resolver exciter 23, and the deviation phase modulator 22 supplies a signal SC to a servo unit 24 to drive a motor 25. The deviation phase modulator 22 receives a feedback signal from the resolver 26 and compares the phase of the servo command signal SC, which is outputted to the servo unit for every shaft by a moving signal (signal instructing a work 27 to move to the plus (+) or minus (-) side) of the work to every shaft, with that of a standard signal to move the work 27 to the plus (+) or minus (-) side. Thus, directions of axial movement of the work 27 are monitored successively to correct always the backlash.
Inventors:
YOSHIHARA MINORU
TSUJI YUKIROU
OOKAWA TADASHI
TSUJI YUKIROU
OOKAWA TADASHI
Application Number:
JP16415481A
Publication Date:
April 20, 1983
Filing Date:
October 16, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05D3/12; G05B19/18; G05B19/33; G05B19/404; (IPC1-7): G05B19/19; G05D3/10
Attorney, Agent or Firm:
Toshiyuki Usuda