2 a u to matic d at u m set ting – HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles User Manual
Page 57
HEIDENHAIN TNC 426, TNC 430
45
3.2 A
u
to
matic D
at
u
m Set
ting
U
U
U
U
Center in 1st axis
Q321 (absolute value): Center of
the pocket in the reference axis of the working plane.
U
U
U
U
Center in 2nd axis
Q322 (absolute value): Center of
the pocket in the minor axis of the working plane.
U
U
U
U
First side length
Q323 (incremental value): Pocket
length, parallel to the reference axis of the working
plane.
U
U
U
U
Second side length
Q324 (incremental value): Pocket
length, parallel to the minor axis of the working plane
U
U
U
U
Measuring height in the touch probe axis
Q261
(absolute): coordinate of the ball tip center (= touch
point) in the touch probe axis in which the
measurement is to be made.
U
U
U
U
Setup clearance
Q320 (incremental): additional
distance between measuring point and ball tip. Q320
is added to MP6140.
U
U
U
U
Clearance height
Q260 (absolute): coordinate in the
touch probe axis at which no collision between tool
and workpiece (fixtures) can occur.
U
U
U
U
Traversing to clearance height
Q301: definition of
how the touch probe is to move between the
measuring points:
0: Move at measuring height between measuring
points
1: Move at clearance height between measuring
points
U
U
U
U
Datum number in table
Q305: Enter the datum
number in the table in which the TNC is to save the
coordinates of the pocket center. If you enter
Q305=0, the TNC automatically sets the display so
that the new datum is at the center of the pocket.
U
U
U
U
New datum for reference axis
Q331 (absolute):
coordinate in the reference axis at which the TNC
should set the pocket center. Basic setting = 0
U
U
U
U
New datum for minor axis
Q332 (absolute):
coordinate in the minor axis at which the TNC should
set the pocket center. Basic setting = 0
Example: NC blocks
5 TCH PROBE 410 DATUM INSIDE RECTAN.
Q321=+50 ;CENTER IN 1ST AXIS
Q322=+50 ;CENTER IN 2ND AXIS
Q323=60 ;1ST SIDE LENGTH
Q324=20 ;2ND SIDE-LENGTH
Q261=-5 ;MEASURING HEIGHT
Q320=0 ;SET-UP CLEARANCE
Q260=+20 ;CLEARANCE HEIGHT
Q301=0 ;TRAVERSE TO CLEAR HEIGHT
Q305=10 ;NO. IN TABLE
Q331=+0 ;DATUM
Q332=+0 ;DATUM
X
Y
Q322
Q321
Q324
Q323
MP6140
+
Q320