13. Program Support Functions
13.1 Fixed Cycles
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13. Program Support Functions
13.1 Fixed Cycles
13.1.1 Standard Fixed Cycles; G80 to G89, G73, G74, G75, G76
Function and purpose
These standard canned cycles are used for predetermined sequences of machining operations
such as positioning, hole drilling, boring, tapping, etc. which are specified in a block. The various
sequences in the table below are provided for the standard canned cycles.
By editing the standard canned cycle subprogram, the canned cycle sequence can be changed by
the user. The user can also register and edit an original canned cycle program. For the standard
canned cycle subprogram, refer to the list of the canned cycle subprogram in the appendix of the
operation manual. The list of canned cycle functions for this control unit is shown below.
Operation at hole
bottom
Return
operation
(+Z direction)
Retract at
high-
speed
Application
G code
Hole machining
start
(-Z direction)
Dwell
Spindle
G80 - - -
-
-
Cancel
G81
Cutting feed
-
-
Rapid feed
Available
Drill, spot drilling
cycle
G82
Cutting feed
Yes
-
Rapid feed
-
Drill, counter
boring cycle
G83
Intermittent feed
-
-
Rapid feed
Available
Deep hole
drilling cycle
G84 Cutting
feed
Yes
Reverse
rotation
Cutting feed
-
Tapping cycle
G85
Cutting feed
-
-
Cutting feed
-
Boring cycle
G86
Cutting feed
Yes
Stop
Rapid feed
-
Boring cycle
G87 Cutting
feed
-
Forward
rotation
Cutting feed
-
Back boring
cycle
G88
Rapid traverse
Yes
Stop
Rapid feed
-
Boring cycle
G89
Cutting feed
Yes
-
Cutting feed
-
Boring cycle
G73 Cutting
feed
Yes
-
Rapid
feed Available
Stepping
cycle
G74 Intermittent
feed Yes
Forward
rotation
Cutting feed
-
Reverse tapping
cycle
G75
Cutting feed
-
-
Rapid feed
-
Circular cutting
cycle
G76 Cutting
feed
-
Oriented
spindle stop
Rapid feed
-
Fine boring
cycle
A canned cycle mode is canceled when the G80 or any G command in (G00, G01, G02, G03) is
issued. The various data will also be cleared simultaneously to zero.