5 sl cy cles, Example: cylinder surface with cycle 27 – HEIDENHAIN TNC 620 (340 56x-01) User Manual
Page 327

HEIDENHAIN TNC 620
327
8.5 SL Cy
cles
Example: Cylinder surface with Cycle 27
Notes:
Cylinder centered on rotary table
Datum at center of rotary table
Description of the midpoint path in the
contour subprogram
0 BEGIN PGM C28 MM
1 TOOL CALL 1 Y S2000
Call tool, tool axis is Y
2 L Y+250 RO FMAX
Retract the tool
3 L X R0 FMAX
Position tool on rotary table center
4 CYCL DEF 14.0 CONTOUR GEOMETRY
Define contour subprogram
5 CYCL DEF 14 .1 CONTOUR LABEL 1
6 CYCL DEF 27 CYLINDER SURFACE
Define machining parameters
Q1=-7
;MILLING DEPTH
Q3=+0
;ALLOWANCE FOR SIDE
Q6=2
;SET-UP CLEARANCE
Q10=4
;PLUNGING DEPTH
Q11=100
;FEED RATE FOR PLUNGING
Q12=250
;FEED RATE FOR MILLING
Q16=25
;RADIUS
Q17=1
;TYPE OF DIMENSION
7 L C+0 R0 FMAX M3
Pre-position rotary table
8 CYCL CALL
Cycle call
9 L Y+250 R0 FMAX M2
Retract in the tool axis, end program
10 LBL 1
Contour subprogram, description of the midpoint path
11 L X+40 Y+0 RR
Data for the rotary axis are entered in mm (Q17=1)
X
Y
157
52.5
40
35
60
70