HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 230)

Programming: Programming contours
6.5 Path contours – Polar coordinates
6
230
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015
6.5 Path contours – Polar coordinates
Overview
With polar coordinates you can define a position in terms of its
angle
PA and its distance PR relative to a previously defined pole
CC.
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
231
+
Circular path around circle
center/pole to arc end point
Polar angle of the arc end
point, direction of rotation
232
+
Circular arc with tangential
connection to the preceding
contour element
Polar radius, polar angle of the
arc end point
232
+ 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
233