Yaskawa YASNAC PC NC Programming Manual - Manual (Page 140)

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YASNAC PCNC Programming Manual Chapter 4: Enhanced Level Commands
4.1 PROGRAM SUPPORT FUNCTIONS (1)
4.1.1 Canned Cycles (G73 to G89, G181 to G189) *
Canned cycles (G73, G74, G76, G77, G80 to G89, G181, G182, G185, G186, G187, and G189)
can define specific movements that usually require several blocks of single-block commands. 19
kinds of canned cycles are provided and G80 cancels the called up canned cycle program.
(1) G Codes Calling Canned Cycles and Axis Movement Patterns of Canned Cycles
Canned cycles are largely classified into normal hole-machining cycles and 2-step hole-
machining canned cycles.
(a) Normal hole-machining canned cycles
For calling normal hole-machining canned cycles, the following G codes are used.
Table 4.1.1.1 Table of Normal Hole-machining Canned Cycles
G Code Axis Feed
Processing at
Hole Bottom
Retraction Application
G73
Intermittent feed
(dwell at each
peck feed possi-
ble)
— Rapid traverse
High-speed deep
hole drilling
G74 Cutting feed
Spindle rotation
in the reverse
direction after
dwell
Cutting feed
Å
Dwell
Å Spindle
reverse rotation
Reverse tapping
G76 Cutting feed
Spindle indexing
Å Shift
Rapid traverse
Å
Shift, Spindle
start Boring
G77
Spindle indexing
Å Shift Å Rapid
traverse
Å Shift
Å Spindle start
Å Cutting feed
Dwell
Rapid traverse
Å
Spindle indexing,
Shift
Å Rapid
traverse
Å Shift,
Spindle start
Back boring
G80 — — — Cancel
G81 Cutting feed — Rapid traverse Drilling
G82 Cutting feed Dwell Rapid traverse Spot facing
G83 Intermittent feed — Rapid traverse Deep hole drilling
G84 Cutting feed
Spindle start in
the reverse direc-
tion after dwell Cutting feed
Å
Dwell
Å Spindle
reverse rotation
Tapping
G85 Cutting feed — Cutting feed Boring