HEIDENHAIN TNC 620 (340 56x-02) - Manual (Page 181)

HEIDENHAIN TNC 620 181
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.
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 LP + Straight line Polar radius, polar angle of
the straight-line end point Page 182
Circular arc CP + Circular path around circle
center/pole to arc end point Polar angle of the arc end
point, direction of rotation Page 183
Circular arc CTP + Circular arc with tangential
connection to the preceding
contour element Polar radius, polar angle of
the arc end point Page 184
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 185