HEIDENHAIN TNC 640, User Manual, Page: 609 / 948

Multiple-Axis Machining | The PLANE function: Tilting the working plane (option 8)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
609
Positioning the rotary axes in a separate block
Proceed as follows if you want to position the rotary axes in a
separate positioning block (option
STAY
selected):
NOTICE
Danger of collision!
The control does not automatically check whether collisions can
occur between the tool and the workpiece. Incorrect or no pre-
positioning before tilting the tool to position can lead to a risk of
collision during the tilting movement!
Program a safe position of the tool before the tilting
movement.
Carefully test the NC program or program section in the
Program run, single block
operating mode
Select any
PLANE
function, and define automatic tilting to
position with the
STAY
option. During program execution, the
control calculates the position values of the rotary axes present
on the machine, and stores them in the system parameters
Q120 (A axis), Q121 (B axis) and Q122 (C axis)
Define the positioning block with the angular values calculated
by the control.
Example: Tilt a machine with a rotary table C and a tilting table A to a spatial angle of B+45
...
12 L Z+250 R0 FMAX
Position at clearance height
13 PLANE SPATIAL SPA+0 SPB+45 SPC+0 STAY
Define and activate the PLANE function
14 L A+Q120 C+Q122 F2000
Position the rotary axis with the values calculated by the
control.
...
Define machining in the tilted working plane