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1. AXIS CONTROL
B-64693EN-1/01
- 242 - 1.8 ANGULAR AXIS CONTROL Overview When the angular axis installed makes an angle other than 90 ° with the perpendicular axis, the angular axis control function controls the distance traveled along each axis according to the inclination angle as in ° with the perpendicular axis. Arbitrary axes can be specified as a set of an angular axis and perpendicular axis by parameter setting.
θ
+Y'(Hypothetical axis) +Y'(Angular axis) θ : Inclination angle +X(Perpendicular axis) Program coordinate system (Cartesian coordinates) Machine coordinate system (Slanted coordinates) +Y' +X +X +Y
Fig. 1.8 (a)
Explanation - Travel distance of each axis When the amounts of travel along the angular axis and the perpendicular axis are Ya and Xa, respectively,
Ya = Yp cos θ
Xa , Ya : Actual distance Xp , Yp : Programmed distance The amount of travel along the perpendicular axis is corrected by the influence of travel along the angular Xa = Xp – C × Yp × tan θ
NOTE
The coefficient C is 2 in the case of diameter specification for the perpendicular
+Y (Angular axis) +Y' (Hypothetical axis) θ
Yp tan θ
(perpendicular axis component produced by Xp and Yp Xa and Ya Actual tool travel +X (Perpendicular axis)
Fig. 1.8 (b)
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