Title:
METHOD FOR RESTORING ZERO POINT OF ROTATION AXIS IN NUMERICAL CONTROLLER
Document Type and Number:
Japanese Patent JPH03212704
Kind Code:
A
Abstract:
PURPOSE:To quickly restore an origin without considering a mechanical error such as backlash by restoring the origin always in the same rotating direction within 360 deg. angle without reversing the rotation. CONSTITUTION:At first, a work coordinate system is set up to zero and allowed to coincide with the origin of a rotation axis which is the origin (0 deg.) of a mechanical coordinate system. Then a program is executed. Thereby, the rotation axis is rotated up to the angular position 13 of four revolutions or more. In parallel with the rotation control of the rotation axis, the mechanical coordinate system using a mechanical origin included in a numerical control device as its coordinate origin and a work coordinate system formed around a work are restored to zero in each 360 deg. unit. When the rotation axis arrives at the rotational angle position 13 and the origin restoration program is started, the current position of the work coordinate system is read out and the rotational angle 270 deg. up to the succeeding rotational angle zero position is calculated. The rotation axis is rotated by 270 deg. in the same rotating direction and positioned on a newly set rotation axis origin 9 and the completion of the positioning is displayed as zero display.
More Like This:
| JP3088541 | DISPLAY SWITCHING DEVICE |
| JPH04167102 | ROBOT ORIGINAL POINT RETURNING METHOD |
Inventors:
SUGIYAMA MINORU
Application Number:
JP941790A
Publication Date:
September 18, 1991
Filing Date:
January 18, 1990
Export Citation:
Assignee:
NEC CORP
International Classes:
G05B19/18; G05D3/00; (IPC1-7): G05B19/18; G05D3/00
Domestic Patent References:
| JPS57201153A | 1982-12-09 |
Attorney, Agent or Firm:
Hachiman Yoshihiro