Question

Question 7): Write G-code program to machine the part shown in the figure below using CNC milling machine. Use sub programming commands (M98 and M99) in the pocket cutting. Maximum depth of cut is 5 mm.

Question 7): Write G-code program to machine the part shown in the figure below using CNC milling machine. Use sub programming commands (M98 and M99) in the pocket cutting Maximum depth of cut is 5 mm. 60 50 0 40 100

Answer 1

given that

00001 N01 G21 G90 G92 X-05 Y-05 ZO0 Here 0001 is main program which In start we define absolute system, millimetre unit And here I assume 5,5 point of figure as 0,0 or Origin point for milling and hence milling start. Line 21 calls Subprogram which is written in second NO2 G01 G42 X00 YO0 Z-05 DO5 NO3 G94 S1000 T18 M06 M03 NO4 G01 X79.08 NO5 G01 X90 Y30 NO6 G00 X 79.08 YOO File name 0002 N07 G01 X85 For first time this make a 5 mm depth pocket and Than called in line 23 to convert it into 10 mm depth N08 G01 X90 Y30 NO9 G00 X85 Y00 Pocket. N10 G01 x90 Line 25 calls to change the tool and use a drilling bit N11 G01 X90 Y55 Which has 8mm diameter N12 G17 G03 X85 Y60 RO05 Then drilling process completed N13 G01 X35 N14 G17 G03 X55 Y60 R10 N15 G01 X5 N16 G17 G03 XO Y55 RO5 N17 G01 YO0 N18 G00 Z00 N19 G00 X20 Y15 N20 G01 Z-05 00002 N21 M98 PO02 N01 G01 Y35 N22 G01 Z-10 NO2 G17 G03 X25 Y35 RO05 N23 M98 P002 N03 G01 X55 Y35 N24 G00 Z00 M05 NO4 G17 G03 X60 Y30 ROT N25 T M8 NO5 G01 Y15 N26 G00 X10 Y15 NO6 G17 G03 X55 Y10 RO05 N07 G01 X25 N27 G01 G95 Z20 F.05 S1000 M03 N28 G00 Z00 N08 G17 G03 X20 Y15 N29 G00 Y35 NO9 G01 Y25 N30 G01 G95 Z20 F.05 N10G01 XST N31 G00 Z00 N11 G00 X20 N32 G00 X70 N12 G01 Y35 N33 G01G95 Z20O F.05 N13 G01 X55 N34 G00 z00 N14 GO0 X20 Y15 N35 G00 Y15 N15 M99 N36 G01 G95 Z20 F.05 N37 G00 Z00 N38 G00 X00 YO0 MO5 N39 M30

**************************************************END***********************************************************

Answer 2

write a G-code program to machine the part shown in the figure below using a CNC milling machine