Example: Cylinder Surface With Cycle 28 - HEIDENHAIN TNC 320 User's Manual For Cycle Programming

Example: Cylinder surface with Cycle 28

Cylinder centered on rotary table
Machine with B head and C 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 Z S2000
2 L Z+250 R0 FMAX
3 L X+50 Y+0 R0 FMAX
4 PLANE SPATIAL SPA+0 SPB+90 SPC+0 TURN FMAX
5 CYCL DEF 14.0 CONTOUR
6 CYCL DEF 14.1 CONTOUR LABEL 1
7 CYCL DEF 28 CYLINDER SURFACE
Q1=-7 ;MILLING DEPTH
Q3=+0 ;ALLOWANCE FOR SIDE
Q6=2 ;SET-UP CLEARANCE
Q10=-4 ;PLUNGING DEPTH
Q11=100 ;FEED RATE FOR PLNGNG
Q12=250 ;FEED RATE F. ROUGHNG
Q16=25 ;RADIUS
Q17=1 ;TYPE OF DIMENSION
Q20=10 ;SLOT WIDTH
Q21=0.02 ;TOLERANCE
8 L C+0 R0 FMAX M3 M99
9 L Z+250 R0 FMAX
10 PLANE RESET TURN FMAX
11 M2
12 LBL 1
13 L X+60 Y+0 RL
14 L Y-35
15 L X+40 Y-52.5
16 L Y-70
17 LBL 0
18 END PGM C28 MM
HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016
Programming Examples
Y (Z)
Tool call, tool axis Z, diameter 7
Retract the tool
Position tool at rotary table center
Tilting
Define contour subprogram
Define machining parameters
Remachining active
Pre-position rotary table, spindle ON, call the cycle
Retract the tool
Tilt back, cancel the PLANE function
End of program
Contour subprogram, description of the midpoint path
Data for the rotary axis are entered in mm (Q17=1)
8
8.6
X (C)
233