Path Contours - Polar Coordinates; Overview - HEIDENHAIN TNC 640 User Manual

7
7.5 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
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Tool movement
Straight line
Circular path around circle
center/pole to arc end point
Circular path corresponding to
active direction of rotation
Circular arc with tangential
connection to the preceding
contour element
Combination of a circular and a
linear movement
Programming Contours | Path contours – Polar coordinates
Required input
Polar radius, polar angle of the
straight-line end point
Polar angle of the arc end point,
Polar angle of the circle end
point
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
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
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