Milling Programming Examples

Example – 1

The dimensions of the workpiece blank are as follows: length = 110 mm, breadth = 110 mm, and thickness = 5 mm. An end-mill cutter with a diameter of 10 mm will be used for machining purposes.

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(Example 1)

N05 G21 G90 G94                             (Preparatory function codes)

N10 T1 M06                                       (T1 number tool change)

N15 M03 S2000 M07                         (Spindle ON with 2000 RPM & Coolant ON)

N20 G00 G54 D1 X-10 Y0 Z5          (Axis positioning considering work offset & tool offset)

N25 G01 Z-5.5 F150                          (Z-axis movement for the depth of cut)

N30 G41 X0 Y0                                 (Cutter compensation left & positioning at A point)

N35 Y75                                             (Positioning at B point)

N40 X25 Y100                                   (Positioning at C point) 

N45 X50                                             (Positioning at D point)

N50 Y75                                             (Positioning at E point)  

N55 X100                                           (Positioning at F point)

N60 Y15                                             (Positioning at G point)  

N65 G02 X85 Y0 R15 F100              (Positioning at H point with 15 mm radius path)

N70 G01 X0 F150                              (Return to position A)

N75 G00 G40 X-15 Y-15                   (Cancelling cutter compensation and shifting axes)  

N80 Z5 M05 M09                               (Retracting Z-axis, Spindle stop, and Coolant off)

N85 G00 G53 X0 Y0 Z0                    (Cancelling work offset & returning to machine zero)

N90 M30                                             (End of the program)

Example – 2 

The dimensions of the workpiece blank are as follows: length = 310 mm, breadth = 160 mm, and thickness = 10 mm. An end-mill cutter with a diameter of 10 mm will be used for machining purposes.

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(Example 2)

N05 G21 G90 G94                             (Preparatory function codes)

N10 T2 M06                                       (Tool change)

N15 M03 S1000 M07                         (Spindle & Coolant ON)

N20 G00 G54 D1 X-10 Y0 Z-5          (Axis positioning with work offset & tool offset)

N25 G01 Z10.5 F200                         (Z-axis movement for the depth of cut)

N30 G42 X0 Y0                                 (Cutter compensation Right & positioning at A point))

N35 Y70                                             (Positioning at B point)

N40 X30                                             (Positioning at C point) 

N45 X100 Y150                                 (Positioning at D point)

N50 X140                                           (Positioning at E point)  

N55 Y110                                           (Positioning at F point)

N60 G02 X220 Y110 R40 F100        (Positioning at G point with 40 mm radius path)  

N65 G03 X300 Y110 R40 F100        (Positioning at H point with 40 mm radius path)

N70 G01 Y0 F200                              (Positioning at I point) 

N75 X280                                           (Positioning at J point)

N80 G02 X200 Y0 R40 F100            (Positioning at K point with 40 mm radius path)  

N85 G01 X180 F200                          (Positioning at L point)  

N90 Y40                                             (Positioning at M point)  

N95 X140                                           (Positioning at N point)

N100 G03 X60 Y40 R40 F100          (Positioning at O point with 40 mm radius path)  

N105 G01 X30 F200                          (Positioning at P point)

N110 Y0                                             (Positioning at Q point)

N115 X0                                             (Returning at A Point)

N100 G00 G40 X-15 Y-15                 (Cancelling cutter compensation and shifting axes)  

N105 Z5 M05 M09                             (Retracting Z-axis, Spindle stop, and Coolant off)

N110 G00 G53 X0 Y0 Z0                  (Cancelling work offset & returning to machine zero)

N105 M30                                           (End of the program)

Example – 3

The dimensions of the workpiece blank are as follows: length = 130 mm, breadth = 110 mm, and thickness = 10 mm. An end-mill cutter with a diameter of 10 mm will be used for machining purposes.

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(Example 3)

N05 G21 G90 G94                             (Preparatory function codes)

N10 T3 M06                                       (Tool change)

N15 M03 S3000 M07                         (Spindle ON with 3000 RPM & Coolant ON)

N20 G00 G54 D1 X-10 Y0 Z5          (Axis positioning considering work offset & tool offset)

N25 G01 Z-10.5 F200                        (Z-axis movement for the depth of cut)

N30 G41 X0 Y0                                 (Cutter compensation left & positioning at A point)

N35 Y85                                             (Positioning at B point)

N40 G02 X15 Y100 F100                  (Positioning at C point with 15 mm radius path) 

N45 G01 X45 F200                            (Positioning at D point)

N50 G02 X65 Y80 I20 J0 F100         (Positioning at E point with 20 mm radius path)  

N55 G01 Y60 F200                            (Positioning at F point)

N60 X85                                             (Positioning at G point)  

N65 G02 X100 Y45 R15 F100          (Positioning at H point with 15 mm radius path)

N70 G01 Y40 F150                            (Positioning at I point) 

N75 G02 X90 Y30 R10 F100            (Positioning at J point with 10 mm radius path)

N80 X85                                             (Positioning at K point)  

N85 G03 X65 Y10 I-20 J0 F100        (Positioning at L point with 20 mm radius path)  

N90 Y0                                               (Positioning at M point)  

N95 X0                                               (Positioning at A point)  

N100 G00 G40 X-15 Y-15                 (Cancelling cutter compensation and shifting axes)  

N105 Z5 M05 M09                             (Retracting Z-axis, Spindle stop, and Coolant off)

N110 G00 G53 X0 Y0 Z0                  (Cancelling work offset & returning to machine zero)

N105 M30                                           (End of the program)

Example – 4 

The dimensions of the workpiece blank are as follows: length = 170 mm, breadth = 170 mm, and thickness = 80 mm. An end-mill cutter with a diameter of 10 mm will be used for machining purposes.

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(Example 4)

N05 G21 G90 G94        

N10 T4 M06                                       (Considering 10 mm diameter end-mill)      

N15 M03 S1500 M07       

N20 G00 G54 G42 D1 X0 Y0 Z-85  (Z-axis positioning 5 mm above work-piece)

N25 G01 Z-20 F150                           (Z-axis taking the depth of cut 20 mm)

N30 X10                                             (Cutter entering work-piece 10 mm)

N35 Y180                                           (Making 10 mm slot on work-piece)

N40 G00 Z-85                                    (Z-axis return 5 mm above work-piece) 

N45 G00 X20 Y0                               (Positioning for the second cut)

N50 G01 Z-20 F150                           (Again cutter entering work-piece)  

N55 Y180                                           (Finishing to make 20 mm slot)

N60 G00 Z-85                                    (Z-axis return 5 mm above work-piece)  

N65 G00 G41 X160 Y0                     (Positioning for first circular cutting)

N70 G01 Z-20 F150                           (Cutter downward for first circular cut)

N75 G02 X170 Y10 R30 F100          (First circular cut)  

N80 G00 Z-85                                    (Z-axis return 5 mm above work-piece)  

N85 G00 X150 Y0                             (Positioning for Second circular cutting)

N90 G01 Z-20 F150                           (Cutter downward for Second circular cut)

N95 G02 X170 Y20 R30 F100          (Second circular cut)  

N100 G00 Z-85                                  (Z-axis return 5 mm above work-piece)  

N105 G00 X140 Y0                           (Positioning for Third circular cutting)

N110 G01 Z-20 F150                          (Cutter downward for Third circular cut)

N115 G02 X170 Y30 R30 F100        (Third circular cut)  

N120 Z-85 M05 M09                          (Retracting Z-axis, Spindle stop, and Coolant off)

N125 M30                                           (End of the program)