Electricity: motive power systems – Positional servo systems – Plural servomotors
Patent
1999-04-29
2000-11-14
Martin, David
Electricity: motive power systems
Positional servo systems
Plural servomotors
700189, 318569, 318632, G05B 1132
Patent
active
061474681
ABSTRACT:
For an orbital machining in which a spindle having a cutting tool attached thereto and a work to be machined are moved, by feed shaft control, to make a relative displacement to each other along a plane perpendicular to an axis of rotation of the spindle, such that a mutual interpolation motion is achieved between the spindle and the work, and a rotation angle of the spindle is controlled quantitatively and synchronously to have a predetermined correlation to the shaft control so that, at any angular position in rotation of the spindle, a blade direction of the cutting tool is maintained in a preset direction to thereby achieve a cutting into a configuration to be defined by an interpolation locus based on the mutual interpolation motion, there is effected a combination of feed-forward compensation for a follow-up delay in control of a motor servo system of a respective feed shaft and for a follow-up delay in control of a motor servo system of the spindle.
REFERENCES:
patent: 4879660 (1989-11-01), Asakura et al.
patent: 4983899 (1991-01-01), Komatsu et al.
patent: 5184053 (1993-02-01), Maruo et al.
patent: 5713253 (1998-02-01), Date et al.
patent: 5920169 (1999-07-01), Hamamura et al.
patent: 5936366 (1999-08-01), Hamamura et al.
patent: 5952804 (1999-09-01), Hamamura et al.
Fujita Jun
Funaki Takahiro
Hamamura Minoru
Hayama Sadaji
Duda Rina I.
Martin David
Toshiba Kikai Kabushiki Kaisha
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