HEIDENHAIN TNC 620 Programming Station

Programming contours | Path contours – Polar coordinates
5
5.5 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
Key Tool movement Required input Page
+ Straight line Polar radius, polar angle of the straight-
line end point
169
+ Circular path around circle center/pole to
arc end point
Polar angle of the arc end point, direction
of rotation
170
+ Circular arc with tangential connection to
the preceding contour element
Polar radius, polar angle of the arc end
point
170
+ 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
171
168
HEIDENHAIN | TNC620 | Klartext Programming User's Manual | 01/2022