HEIDENHAIN TNC 426 (280 476) - Manual (Page 305)

278 8 Programming: Cycles
8.5 Cy
cles f
o
r Mac
h
ining Hole P
a
tt
er
ns
8.5 Cycles for Machining Hole
Patterns
Overview
The TNC provides two cycles for machining hole patterns directly:
You can combine Cycle 220 and Cycle 221 with the following fixed
cycles:
Cycle Soft key
220 CIRCULAR PATTERN
221 LINEAR PATTERN
If you have to machine irregular hole patterns, use CYCL
CALL PAT
(see “Point Tables” on page 206) to develop
point tables.
Cycle 1 PECKING
Cycle 2 TAPPING with a floating tap holder
Cycle 3 SLOT MILLING
Cycle 4 POCKET MILLING
Cycle 5 CIRCULAR POCKET MILLING
Cycle 17 RIGID TAPPING without a floating tap holder
Cycle 18 THREAD CUTTING
Cycle 200 DRILLING
Cycle 201 REAMING
Cycle 202 BORING
Cycle 203 UNIVERSAL DRILLING
Cycle 204 BACK BORING
Cycle 205 UNIVERSAL PECKING
Cycle 206 TAPPING NEW with a floating tap holder
Cycle 207 RIGID TAPPING NEW without a floating tap holder
Cycle 208 BORE MILLING
Cycle 209 TAPPING WITH CHIP BREAKING
Cycle 212 POCKET FINISHING
Cycle 213 STUD FINISHING
Cycle 214 CIRCULAR POCKET FINISHING
Cycle 215 CIRCULAR STUD FINISHING
Cycle 262 THREAD MILLING
Cycle 263 THREAD MILLING/COUNTERSINKING
Cycle 264 THREAD DRILLING/MILLING
Cycle 265 HELICAL THREAD DRILLING/MILLING
Cycle 267 OUTSIDE THREAD MILLING