HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 228)

Programming: Programming contours
6.5 Path contours – Polar coordinates
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TNC 620 | User's ManualDIN/ISO Programming | 2/2015
6.5 Path contours – Polar coordinates
Overview
With polar coordinates you can define a position in terms of its
angle
H and its distance R relative to a previously defined pole I, J.
Polar coordinates are useful with:
Positions on circular arcs
Workpiece drawing dimensions in degrees, e.g. bolt hole circles
Overview of path functions with polar coordinates
Path function key Tool movement Required input Page
+
Straight line Polar radius, polar angle of the
straight-line end point
229
+
Circular path around circle
center/pole to arc end point
Polar angle of the arc end
point,
230
+
Circular path corresponding to
active direction of rotation
Polar angle of the circle end
point
230
+ Circular arc with tangential
connection to the preceding
contour element
Polar radius, polar angle of the
arc end point
230
+
Combination of a circular and a
linear movement
Polar radius, polar angle of the
arc end point, coordinate of
the end point in the tool axis
231