Numeric control device

Abstract

Disclosed is a numeric control device for controlling a machine tool having a translational axis and a rotational axis in order to achieve high-precision processing by correcting effects of translation error and attitude error dependent on movement of the translational axis and translation error and attitude error dependent on movement of the rotational axis; said numeric control device comprising a translational axis dependent position correction amount calculation means (6) for calculating a position correction amount of a translational axis from the translation error and attitude error dependent on movement of the translational axis; a rotational axis dependent position correction amount calculation means (7) for calculating a position correction amount of a translational axis from the translation error and attitude error dependent on movement of the rotational axis; a rotational axis angle correction amount calculation means (8) for calculating an angle correction amount of a rotational axis from a portion of the attitude error dependent on movement of the translational axis and a portion of the attitude error dependent on movement of the rotational axis; and a position-added-correction-amount calculation means (9) for calculating a position correction amount of a translational axis corresponding to the rotational axis correction amount.

Description

technical field [0001] The present invention relates to a numerical control device for controlling a working machine having a translation axis and a rotation axis, and in particular, relates to a method for correcting the influence of an error of the translation axis and the rotation axis so that high-precision machining can be performed of numerical control devices. Background technique [0002] First, use Figure 5 , to account for the attitude error due to the motion of the translation axis. For the table 1 that is moved in the X-axis direction by constraining the movement direction of the guide part 2, it is known that on the basis of the translation error in the X-axis direction, the translation error in the Y-axis direction, and the translation error in the Z-axis direction, there are Attitude error for axis rotation (yaw), attitude error for rotation around the Y axis (pitch), and attitude error for rotation around the X axis (roll). The translation error in each di...

AI Technical Summary

Problems solved by technology

Similarly, for example, due to the influence of the assembly error of the tilting rotary table 3, the A-axis rotation center line that should be parallel to the X-axis and the C-axis rotation center line that should be parallel to the Z-axis have parallelism errors. In the presence of this error, there will be translation errors and attitude errors caused by the rotation axis motion

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