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Programming a Counter-Clockwise Arc on a Lathe

G3 Example

The code to program a G3 counter-clockwise arc on a lathe is: G3X______ Z_______ R_______

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O0016 (PROGRAM NUMBER)

(LATHE PART)

G50S2500 (MAXIMUM SPINDLE SPEED)

T0101 (TOOL CALL, TOOL OFFSET CALL)

G96S500M3 (CONSTANT SURFACE SPEED, TURN SPINDLE ON AT 500RPM)

(TURNING OPERATION)

G0G54G90X1.00Z0.1M8 ( G54 WORK COORDINATE, RAPID TO X1.0, Z.1, COOLANT ON)

G1G99Z-2.0F.003 (TURN PART TO X1.0, Z-2.0)

G3X2.0Z-2.5R.5 (CUT RADIUS)

G1Z-4.0 (TURNS PART TO Z-4.0)

G0X2.5 (RAPID TO X2.5)

G0Z.1 (RAPID TO Z.1)

G0X6.5M9 (RAPID TO X 6.5, COOLANT OFF)

M30 (END OF PROGRAM)

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