HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 178)

178 Fixed Cycles: Contour Pocket
7.
4 CONT
OUR D
A
T
A
(Cy
c
le 20, DIN/ISO: G120)
Cycle parameters
U Milling depth Q1 (incremental): Distance between
workpiece surface and bottom of pocket. Input range
-99999.9999 to 99999.9999
U Path overlap factor Q2: Q2 x tool radius = stepover
factor k. Input range -0.0001 to 1.9999.
U Finishing allowance for side Q3 (incremental):
Finishing allowance in the working plane. Input range
-99999.9999 to 99999.9999
U Finishing allowance for floor Q4 (incremental):
Finishing allowance in the tool axis. Input range
-99999.9999 to 99999.9999
U Workpiece surface coordinate Q5 (absolute):
Absolute coordinate of the workpiece surface. Input
range -99999.9999 to 99999.9999
U Set-up clearance Q6 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
U Clearance height Q7 (absolute): Absolute height at
which the tool cannot collide with the workpiece (for
intermediate positioning and retraction at the end of
the cycle). Input range -99999.9999 to 99999.9999
U Inside corner radius Q8: Inside "corner" rounding
radius; entered value is referenced to the path of the
tool center and is used to calculate smoother traverse
motions between the contour elements. Q8 is not a
radius that is inserted as a separate contour
element between programmed elements! Input
range 0 to 99999.9999
U Direction of rotation? Q9: Machining direction for
pockets.
„ Q9 = –1 up-cut milling for pocket and island
„ Q9 = +1 climb milling for pocket and island
You can check the machining parameters during a program
interruption and overwrite them if required.
Example: NC blocks
57 CYCL DEF 20 CONTOUR DATA
Q1=-20 ;MILLING DEPTH
Q2=1 ;TOOL PATH OVERLAP
Q3=+0.2 ;ALLOWANCE FOR SIDE
Q4=+0.1 ;ALLOWANCE FOR FLOOR
Q5=+30 ;SURFACE COORDINATE
Q6=2 ;SET-UP CLEARANCE
Q7=+80 ;CLEARANCE HEIGHT
Q8=0.5 ;ROUNDING RADIUS
Q9=+1 ;DIRECTION OF ROTATION
X
Y
k
Q9=+1
Q8
Q9=–1
X
Z
Q6
Q7
Q1
Q10
Q5