HEIDENHAIN TNC 320 - Programming Examples; Example: Cylinder Surface with Cycle 27

Programming Examples 8.6
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
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8.6 Programming Examples
Example: Cylinder surface with Cycle 27
Machine with B head and C table
Cylinder centered on rotary table
Datum is on the underside, in the
center of the rotary table
Y (Z)
X (C)
0 BEGIN PGM C27 MM
1 TOOL CALL 1 Z S2000
Tool call: Diameter 7
2 L Z+250 R0 FMAX
Retract the tool
3 L X+50 Y0 R0 FMAX
Pre-position tool at rotary table center
4 PLANE SPATIAL SPA+0 SPB+90 SPC+0 TURN MBMAX
FMAX
Positioning
5 CYCL DEF 14.0 CONTOUR
Define contour subprogram
6 CYCL DEF 14.1 CONTOUR LABEL 1
7 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 PLNGNG
Q12=250 ;FEED RATE F. ROUGHNG
Q16=25 ;RADIUS
Q17=1 ;TYPE OF DIMENSION
8 L C+0 R0 FMAX M13 M99
Pre-position rotary table, spindle ON, call the cycle
9 L Z+250 R0 FMAX
Retract the tool
10 PLANE RESET TURN FMAX
Tilt back, cancel the PLANE function
11 M2
End of program
12 LBL 1
Contour subprogram
13 L X+40 Y+20 RL
Data for the rotary axis are entered in mm (Q17=1)
14 L X+50
15 RND R7.5
16 L Y+60
17 RN R7.5
18 L IX-20
19 RND R7.5
20 L Y+20