iTNC 530 - TNC 640 - DR. JOHANNES HEIDENHAIN GmbH

Machining cylindrical surfaces*
With the iTNC 530 it is quite easy to
program contours (which consist of straight
lines and arcs) on cylindrical surfaces using
rotary and tilting tables: You simply program
the contour in a plane as if the cylinder
surface were unrolled. The iTNC 530 then
executes the operation on the surface of
the cylinder.
The iTNC 530 features four cycles for
cylindrical surface machining:
Slot milling (the slot width is the same as
the tool diameter)
Guide-groove milling (the slot width is
greater than the tool diameter)
Ridge milling
Mill outside of contour
* The machine and the iTNC must be adapted to these
functions by the machine tool builder.
Manual axis motion in the tool direction
on 5-axis machines
The safe retraction of a tool is very
important with fi ve-axis machining. The
“virtual tool axis” function is of assistance
here. You can use it to traverse the tool in
the current direction of the tool axis
through an external direction key or the
handwheel. This function is especially
useful if you want to
retract the tool in the direction of the tool
axis during interruption of a fi ve-axis
machining program, or
use the handwheel or external direction
keys to perform an operation in Manual
mode and the tool is in contact.
move the tool with the handwheel in the
active tool axis direction during
machining.
Linear feed rate for rotary tables
in mm/min*
In the standard version, the feed rate of
rotary axes is programmed in degrees/
minute. However, the iTNC 530 can
interpret this feed rate in mm/min as well.
The feed rate at the contour is then
independent of the distance of the tool
center from the center of the rotary axis.
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