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

Page 327

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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