Title:
SYSTEM FOR RETURNING A MAIN AXIS BACK TO ORIGIN
Document Type and Number:
WIPO Patent Application WO/1989/005004
Kind Code:
A1
Abstract:
A system for returning a main axis back to a preset mechanical origin. A spindle amplifier (20) rotates a main axis motor (30) upon receipt of a return-to-origin instruction from a numerical controller (10), and positions the main axis motor at a mechanical origin separated by a predetermined distance away from the point upon receipt of a turn signal (Pi) from a position detector (36). Therefore, if a rotational distance is given from a point where the turn signal (Pi) is produced to the mechanical origin, the operation for returning the main axis back to the origin can all be carried out by the spindle amplifier (20) simply in response the return-to-origin instruction sent from the numerical controller (10).
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Inventors:
KOHARI KATSUO (JP)
KONO SHINICHI (JP)
TAKAHASHI HIRONOBU (JP)
KONO SHINICHI (JP)
TAKAHASHI HIRONOBU (JP)
Application Number:
PCT/JP1988/001063
Publication Date:
June 01, 1989
Filing Date:
October 19, 1988
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
B23Q5/20; G05B19/18; G05B19/401; (IPC1-7): G05B19/18; B23Q5/20; G05D3/12
Foreign References:
| JPS53135082A | 1978-11-25 | |||
| JPS5442091A | 1979-04-03 |
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