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8 Programming: Cycles
158
BORING (Cycle 202)
Machine and control must be specially prepared by the
machine tool builder to enable Cycle 202.
1
The TNC positions the tool in the tool axis at rapid traverse FMAX
to set-up clearance above the workpiece surface.
2
The tool drills to the programmed depth at the feed rate for
plunging.
3
If programmed, the tool remains at the hole bottom for the
entered dwell time with active spindle rotation for cutting free.
4
The TNC then orients the spindle to the 0° position
with an oriented spindle stop.
5
If retraction is selected, the tool retracts in the programmed
direction by 0.2 mm (fixed value).
6
The tool then retracts to set-up clearance at the retraction feed
rate, and from there — if programmed — to the 2nd set-up
clearance in FMAX.
Before programming, note the following:
Program a positioning block for the starting point (hole
center) in the working plane with RADIUS
COMPENSATION R0.
The algebraic sign for the cycle parameter TOTAL HOLE
DEPTH determines the working direction.
After the cycle is completed, the TNC restores the
coolant and spindle conditions that were active before
the cycle call.
ú
Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface.
ú
Depth Q201 (incremental value): Distance between
workpiece surface and bottom of hole
ú
Feed rate for plunging Q206: Traversing speed of the
tool during boring in mm/min
ú
Dwell time at depth Q211: Time in seconds that the
tool remains at the hole bottom
ú
Retraction feed rate Q208: Traversing speed of the
tool in mm/min when retracting from the hole. If you
enter Q208 = 0, the tool retracts at feed rate for
plunging.
ú
Workpiece surface coordinate Q203 (absolute value):
Coordinate of the workpiece surface
ú
2nd set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
X
Z
Q200
Q201
Q206
Q211
Q203
Q204
Q208
8.2 Dr
illing Cy
cles
Example NC blocks:
9 CYCL DEF 202 BORING
Q200=2
;SET-UP CLEARANCE
Q201=-20
;DEPTH
Q206=150
;FEED RATE FOR PLUNGING
Q211=0.5
;DWELL TIME AT BOTTOM
Q208=500
;RETRACTION FEED TIME
Q203=+0
;SURFACE COORDINATE
Q204=50
;2. SET-UP CLEARANCE
Q214=1
;DISENGAGING DIRECTN
kkap8.pm6
30.06.2006, 07:03
158
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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 ...