Canned cycle

What is a canned cycle?

Canned cycles are commonly used to simplify complicated machining operation programming. Different canned cycles are typically applied for repetitive machining tasks such as drilling, boring, and tapping. They are selected or activated using various G-codes and canceled using the G80 code. In a canned cycle, the X and Y-axis movements are executed with a Rapid command, while the Z-axis motion is controlled with the Feed command. Canned cycles help reduce program memory since fewer blocks are required compared to non-canned cycle programming. The following parameters are typically used in simple canned cycle programming:

X & Y –            Hole position data 

Z –                   Distance from point ‘R’ to the bottom of the hole 

R –                  Retract plane

Q –                  Depth of cut for each cutting feed

F –                   Cutting feed rate

K –                   Number of repeats

1. Drilling Cycle (G81)

N5 T1 M06                                 (Drilling tool changing)

N10 G00 G90 G54 X20 Y60      (Positioning over the drilling point with zero offsets)

N15 M03 S2000                         (Spindle ON)

N20 G00 G43 H01 Z1 M07       (Rapid positioning Z-axis with tool offset)

N25 G81 G99 Z-41 R1 F10       (Drilling cycle on & returning to R point after completion)

N30 G80 G28 X0 Y0 Z0            (Cancelling canned cycle and returning home position) 

N35 M05 M09                            (Spindle stop & Coolant off)

N40 M30                                     (End of the program)

2. Peck Drilling Cycle (G83)

 

N5 T2 M06                                         (Drilling tool changing)

N10 G00 G90 G54 X20 Y60              (Positioning over the drilling point with zero offsets)

N15 M03 S2000                                 (Spindle ON)

N20 G00 G43 H01 Z1 M07               (Rapid positioning Z-axis with tool offset)

N25 G83 G99 Z-61 Q20 R1 F10       (Peck drilling cycle on & returning to R point)

N30 G80 G28 X0 Y0 Z0                    (Cancelling canned cycle and returning home position) 

N35 M05 M09                                    (Spindle stop & Coolant off)

N40 M30                                             (End of the program)

3. Tapping Cycle (G84)

N5 T3 M06                             (Tapping tool changing)

N10 G00 G90 G54 X20 Y60  (Positioning over the drilling point with zero offsets)

N15 S200                               (M03 not required, as G84 will turn ON the spindle)

N20 G00 G43 H01 Z1 M07   (Rapid positioning Z-axis with tool offset)

N25 G84 G99 Z-41 R1 F10   (Tapping cycle on & returning to R point after completion)

N30 G80 G28 X0 Y0 Z0        (Cancelling canned cycle and returning home position) 

N35 M05 M09                        (Spindle stop & Coolant off)

N40 M30                                 (End of the program)

4. Bore in & Bore out canned cycle (G85)  

N5 T3 M06                             (Boring tool changing)

N10 G00 G90 G54 X20 Y60  (Positioning over the drilling point with zero offsets)

N15 M03 S1000                     (Spindle ON)

N20 G00 G43 H01 Z1 M07   (Rapid positioning Z-axis with tool offset)

N25 G85 G99 Z-41 R1 F10   (Boring cycle on & returning to R point after completion)

N30 G80 G28 X0 Y0 Z0        (Cancelling canned cycle and returning home position) 

N35 M05 M09                        (Spindle stop & Coolant off)

N40 M30                                 (End of the program)