5 path contours-polar coordinates, Overview, 5 path contours—polar coordinates – HEIDENHAIN iTNC 530 (340 49x-04) User Manual
Page 261

HEIDENHAIN iTNC 530
261
6.5 P
a
th Cont
ours—P
o
lar Coor
dinat
e
s
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 (see
“Fundamentals,” page 269).
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
Function
Path function key
Tool movement
Required input
Page
Line LP
+
Straight line
Polar radius, polar angle of
the straight-line end point
Circular arc CP
+
Circular path around circle
center/pole CC to arc end
point
Polar angle of the arc end
point, direction of rotation
Circular arc CTP
+
Circular arc with tangential
connection to the preceding
contour element
Polar radius, polar angle of
the arc end point
Helical interpolation
+
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