197
HEIDENHAIN TNC 426 B, TNC 430
X
Y
PILOT DRILLING (Cycle 21)
When calculating the infeed points, the TNC does not
account for the delta value DR programmed in a TOOL
CALL block.
Process
Same as Cycle 1 Pecking (see ”8.2 Drilling Cycles”).
Application
Cycle 21 is for PILOT DRILLING of the cutter infeed points. It
accounts for the allowance for side and the allowance for floor as
well as the radius of the rough-out tool. The cutter infeed points
also serve as starting points for roughing.
ú
Plunging depth Q10 (incremental value):
Dimension by which the tool drills in each infeed
(negative sign for negative working direction)
ú
Feed rate for plunging Q11: Traversing speed in mm/
min during drilling
ú
Rough-out tool number Q13: Tool number of the
roughing mill
Example NC blocks:
58 CYCL DEF 21.0 PILOT DRILLING
Q10=+5
;PLUNGING DEPTH
Q11=100
;FEED RATE FOR PLUNGING
Q13=1
;ROUGH_OUT TOOL
8.5 SL Cycles
kkap8.pm6
30.06.2006, 07:03
197
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Summary of Contents for TNC 426 B
Page 3: ...BAUSKLA PM6 30 06 2006 07 03 2 www EngineeringBooksPdf com ...
Page 4: ...BAUSKLA PM6 30 06 2006 07 03 3 www EngineeringBooksPdf com ...
Page 6: ...CINHALT PM6 30 06 2006 07 03 2 www EngineeringBooksPdf com ...
Page 16: ...CINHALT PM6 30 06 2006 07 03 12 www EngineeringBooksPdf com ...
Page 17: ...Introduction 1 Dkap1 pm6 30 06 2006 07 03 1 www EngineeringBooksPdf com ...
Page 29: ...Manual Operation and Setup 2 Dkap2_3 pm6 30 06 2006 07 03 13 www EngineeringBooksPdf com ...
Page 83: ...Programming Tools 5 Fkap5 pm6 30 06 2006 07 03 67 www EngineeringBooksPdf com ...
Page 106: ...Fkap5 pm6 30 06 2006 07 03 90 www EngineeringBooksPdf com ...
Page 107: ...Programming Programming Contours 6 Gkap6 pm6 30 06 2006 07 04 91 www EngineeringBooksPdf com ...
Page 165: ...Hkap7 pm6 30 06 2006 07 03 150 www EngineeringBooksPdf com ...
Page 166: ...Programming Cycles 8 kkap8 pm6 30 06 2006 07 03 151 www EngineeringBooksPdf com ...
Page 253: ...kkap8 pm6 30 06 2006 07 04 238 www EngineeringBooksPdf com ...
Page 265: ...LKAP9 PM6 30 06 2006 07 04 250 www EngineeringBooksPdf com ...
Page 266: ...Programming Q Parameters 10 MKAP10 PM6 30 06 2006 07 04 251 www EngineeringBooksPdf com ...
Page 297: ...MKAP10 PM6 30 06 2006 07 04 282 www EngineeringBooksPdf com ...
Page 298: ...Test Run and Program Run 11 NKAP11 PM6 30 06 2006 07 04 283 www EngineeringBooksPdf com ...
Page 312: ...MOD Functions 12 Okap12 pm6 30 06 2006 07 04 297 www EngineeringBooksPdf com ...
Page 332: ...Tables and Overviews 13 Pkap13 pm6 30 06 2006 07 04 317 www EngineeringBooksPdf com ...