Programming Contours | Fundamentals of path functions
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HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
249
Three-dimensional movement
If the NC block contains three coordinates, the control moves the
tool spatially to the programmed position.
Example
N50 G01 X+80 Y+0 Z-10*
Circles and circular arcs
The control moves two machine axes simultaneously on a circular
path relative to the workpiece. You can define a circular movement
by entering the circle center with I and J.
When you program a circle, the control assigns it to one of the
main planes. This plane is defined automatically when you set the
spindle axis during a T:
Spindle axis Main plane
(G17) XY, also UV, XV, UY
(G18) ZX, also WU, ZU, WX
(G19) YZ, also VW, YW, VZ
You can program circles that do not lie parallel to a main
plane by using the function for Tilt working plane or
with Q parameters.
Further information: "The PLANE function: Tilting the
working plane (option 8)", page 479
Further information: "Principle and overview of
functions", page 338
Direction of rotation DR for circular movements
When a circular path has no tangential transition to another contour
element, enter the direction of rotation as follows:
Clockwise direction of rotation: G02/G12
Counterclockwise direction of rotation: G03/G13
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