HEIDENHAIN TNC 620 (73498x-01) ISO programming - Manual (Page 186)

186 Programming: Programming contours
6.5 P
a
th cont
ours—P
olar coor
dinat
e
s
6.5 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
Function Path function key Tool movement Required input Page
Straight line G10,
G11 + Straight line Polar radius, polar angle of
the straight-line end point Page 187
Circular arc G12,
G13 + Circular path around circle
center/pole to arc end point Polar angle of the arc end
point, Page 188
Circular arc G15 + Circular path corresponding
to active direction of rotation Polar angle of the circle end
point Page 188
Circular arc G16 + Circular arc with tangential
connection to the preceding
contour element Polar radius, polar angle of
the arc end point Page 188
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 Page 189