Peripheral Milling: 3-D Radius Compensation With M128 And Radius Compensation (G41/G42); Application - HEIDENHAIN TNC 640 User Manual

13
Multiple-Axis Machining | Peripheral Milling: 3-D radius compensation with M128 and radius compensation
13.5 Peripheral Milling: 3-D radius
compensation with M128 and radius
compensation (G41/G42)

Application

With peripheral milling, the control displaces the tool
perpendicularly to the direction of movement and perpendicularly
to the tool direction by the total of the DR delta values (from the
tool table and the T block). Use the G41/G42 radius compensation
to define the compensation direction (direction of movement Y+).
For the control to be able to reach the set tool orientation, you
need to activate the M128 function and subsequently the tool
radius compensation. The control then positions the rotary axes
automatically in such a way that the tool can reach the orientation
defined by the coordinates of the rotary axes with the active
compensation.
Further information:
positioning with tilted axes (TCPM): M128 (option 9)", page 585
Refer to your machine manual.
This function exclusively only available with spatial
angles. Your machine tool builder defines how these can
be entered.
The control is not able to automatically position the
rotary axes on all machines.
The control generally uses the defined
for 3-D tool compensation. The entire tool radius R +
DR) is only taken into account if you have activated the
FUNCTION PROG PATH IS CONTOUR function.
Further information:
path", page
Danger of collision!
The rotary axes of a machine may have limited ranges of
traverse, e.g. between -90° and +10° for the B head axis.
Changing the tilt angle to a value of more than +10° may result
in a 180° rotation of the table axis. There is a danger of collision
during the tilting movement!
Program a safe tool position before the tilting movement, if
necessary.
Carefully test the NC program or program section in the
Program run, single block operating mode
You can define the tool orientation in a G01 block as described
below.
590
"Maintaining the position of the tool tip when
"Interpretation of the programmed
NOTICE
delta values
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
(G41/G42)