HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 289)

BASIC ROTATION over two holes (Cycle 401, DIN/ISO: G401,
software option 17)
14.3
14
TNC 620 | User's Manual Cycle Programming | 5/2013
289
14.3 BASIC ROTATION over two holes
(Cycle 401, DIN/ISO: G401, software
option 17)
Cycle run
The Touch Probe Cycle 401 measures the centers of two holes.
Then the TNC calculates the angle between the reference axis in
the working plane and the line connecting the hole centers. With
the basic rotation function, the TNC compensates the calculated
value. As an alternative, you can also compensate the determined
misalignment by rotating the rotary table.
1 Following the positioning logic (See "Executing touch probe
cycles", page 280), the control positions the touch probe at rapid
traverse (value from column
FMAX) to the center of the first hole
1 .
2 Then the probe moves to the entered measuring height and
probes four points to find the first hole center.
3 The touch probe returns to the clearance height and then to the
position entered as center of the second hole 2 .
4 The TNC moves the touch probe to the entered measuring
height and probes four points to find the second hole center.
5 Then the TNC returns the touch probe to the clearance height
and performs the basic rotation.
Please note while programming:
Before a cycle definition you must have programmed
a tool call to define the touch probe axis.
The TNC will reset an active basic rotation at the
beginning of the cycle.
If you want to compensate the misalignment by
rotating the rotary table, the TNC will automatically
use the following rotary axes:
C for tool axis Z
B for tool axis Y
A for tool axis X