HEIDENHAIN TNC 320 User Manual page 252

6
Programming contours
6.5 Path contours – Polar coordinates
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
+
+
+
+
252
Tool movement
Straight line
Circular path around circle
center/pole to arc end point
Circular arc with tangential
connection to the preceding
contour element
Combination of a circular and a
linear movement
HEIDENHAIN | TNC 320 | Conversational Programming User's Manual | 9/2016
Required input
Polar radius, polar angle of the
straight-line end point
Polar angle of the arc end
point, direction of rotation
Polar radius, polar angle of the
arc end point
Polar radius, polar angle of the
arc end point, coordinate of
the end point in the tool axis
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