HEIDENHAIN TNC 640 (34059x-01) Cycle programming User Manual
Page 396
396
Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment
15.7 Compensating W
o
rk
piece Mi
salignm
ent b
y
Rota
ting the
C
Ax
is
(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
Set-up clearance
Q320 (incremental): Additional
distance between measuring point and ball tip. Q320
is added to SET_UP (touch probe table). Input range
0 to 99999.9999
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
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
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
;SET-UP CLEARANCE
Q260=+20
;CLEARANCE HEIGHT
Q301=0
;MOVE TO CLEARANCE
Q337=0
;SET TO ZERO
X
Z
Q261
Q260
SET_UP(TCHPROBE.TP)
+
Q320