HEIDENHAIN iTNC 530 (340 49x-05) Cycle programming - Manual (Page 326)

326 Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment
14.7 Compensating w
o
rk
piece misa
lignment b
y
r
o
tating the C axis
(Cy
c
le
405, DIN/ISO: G405)
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. Input range:
-99999.9999 to 99999.9999
U Setup clearance Q320 (incremental): Additional
distance between measuring point and ball tip. Q320
is added to MP6140. Input range 0 to 99999.9999,
alternatively PREDEF
U Clearance height Q260 (absolute): Coordinate in the
touch probe axis at which no collision between touch
probe and workpiece (fixtures) can occur. Input range
-99999.9999 to 99999.9999, alternatively PREDEF
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
Alternatively PREDEF
U Set to zero after alignment Q337: Definition of
whether the TNC should set the display of the C axis
to zero, or write the angular offset in column C of the
datum table:
0: Set display of C to 0
>0: Write the angular misalignment, including
algebraic sign, in the datum table. Line number =
value of Q337. If a C-axis shift is registered in the
datum table, the TNC adds the measured angular
misalignment.
Example: NC blocks
5 TCH PROBE 405 ROT IN C AXIS
Q321=+50 ;CENTER IN 1ST AXIS
Q322=+50 ;CENTER IN 2ND AXIS
Q262=10 ;NOMINAL DIAMETER
Q325=+0 ;STARTING ANGLE
Q247=90 ;STEPPING ANGLE
Q261=-5 ;MEASURING HEIGHT
Q320=0 ;SETUP CLEARANCE
Q260=+20 ;CLEARANCE HEIGHT
Q301=0 ;MOVE TO CLEARANCE
Q337=0 ;SET TO ZERO
X
Z
Q261
Q260
MP6140
+
Q320