Owner's manual

Milling Fixed Cycles
Chapter 26
26-2
Milling fixed cycles (sometimes referred to as canned cycles or autocycles
cycles) repeat a series of basic machining operations, such as, boring,
drilling or tapping. These operations, designated by a single block
command, usually consist of a fixed series of steps that are dependent on
the type of machining application.
The control provides the milling fixed cycles shown in Table 26.A.
Table 26.A
Milling Fixed Cycles
G-code Application Tool Movement
Operation At
Hole Bottom
Retraction Movement
G73 Deep Hole PeckDrilling Cyclewith Dwell Intermittent Feed
Retract
Rapid Traverse
G74 Left-HandTapping Cycle Feed
Spindle Reversed /Retract
Feed
G74.1 Left-HandSolid-Tapping Cycle Feed Spindle Reversed /Retract Feed
G76 BoringCycle,Spindle Shift Feed
Oriented SpindleStop /Retract
Rapid Traverse
G80 Cancel Or End FixedCycle N/A
N/A
N/A
G81 Drilling Cycle,No Dwell/Rapid Out Feed
Retract
Rapid Traverse
G82 Drilling Cycle,Dwell/Rapid Out Feed
Dwell /Retract
Rapid Traverse
G83 Deep Hole Drilling Cycle Intermittent Feed
Retract
Rapid Traverse
G84 Right-Hand Tapping Cycle Feed
Spindle Reversed /Retract
Feed
G84.1 Right-HandSolid-TappingCycle Feed SpindleReversed /Retract Feed
G85 BoringCycle,No Dwell/Feed Out Feed
Retract
Feed
G86 BoringCycle,Spindle Stop/RapidOut Feed
Spindle Stop /Retract
Rapid Traverse
G87 Back BoringCycle Feed
Oriented SpindleStop /Retract
Rapid Traverse
G88 BoringCycleSpindle Stop/Manually Out Feed
Dwell /Retract
Spindle Stop /Retract
Manual/Rapid
Traverse
G89 BoringCycle,Dwell/F eed Out Feed
Dwell /Retract
Feed
26.1
Milling Fixed Cycles