[CAD/CAM/CNC] Lesson 16: G41 G40 Cutter Radius Compensation Example CNC Mill Program

[CAD/CAM/CNC] Lesson 16: G41 G40 Cutter Radius Compensation Example CNC Mill Program

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Cutter Radius Compensation Example program shows how G41, G40 can be used in a cnc mill program.

Cutter Compensation code used in this program are,

• G41 Cutter Radius Compensation Left
• G40 Cutter Radius Compensation Cancel

Cutter Radius Compensation Example

G41 G40 Cutter Radius Compensation Example

N5 G00 G54 G64 G90 G17 X20 Y-20 Z50
N10 S450 M03 F250 D01 (12.5 MM DIA)
N15 C0
N20 Z5
N25 G01 Z0
N30 Z-5
N35 G41 X0 Y0
N40 X-48
N45 X-68 Y72
N50 X-28
N55 Y44
N60 X12 Y32
N65 X0 Y0
N70 G40 X20 Y-20
N75 G00 Z50
N80 Y100
N85 M30

Finished Part
After machining process completion, component will look like

Cutter Radius Compensation Example Finished Part

Explanation of CNC G-Code
G00 : Rapid traverse.
G54 : Zero Offset no. 1.
G64 : Continuous-path mode.
G90 : Absolute dimensioning system.
G17 : X-Y plan selection.
G41 : Cutter radius compensation activation (left hand side movement)
G40 : Cutter radius compensation de-active
S : Spindle speed
F : Axis motion feed
M : Cutter rotation (3=clockwise, 4=anti-clockwise)
D : Tool offset no