HEIDENHAIN TNC 620 (34056x-04) ISO programming - Manual (Page 190)

Programming: Programming contours
6.5 Path contours – Polar coordinates
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TNC 620 | User's Manual for DIN/ISO Programming | 5/2013
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 191
Circular arc
G12, G13 + Circular path around
circle center/pole to
arc end point Polar angle of the arc end
point, 192
Circular arc
G15
+ Circular path
corresponding to
active direction of
rotation Polar angle of the circle
end point 192
Circular arc
G16
+ Circular arc with
tangential connection
to the preceding
contour element Polar radius, polar angle
of the arc end point 192
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 193