CNC Machining Tutorial-5 (DRILLING):-
Before starting this Tutorial let's first discuss about some different terms and conditions for a drill program or drilling operation.
1. Spindle rotation should be Counter-Clock-Wise always.(M04)
2. R-- Retration ( the length by which the tool goes back after a step of drilling)
3. Q-- Ease of Cut ( usually in microns)
4. Drill Cycle -- G74
Problem: we have to work on cylindrical block of 200mm length and 80mm diameter to make the workpiece like as shown in the image:-
 |
| Image of the Drawing that we have to make (Drawing with AutoCAD 2017) |
Mathematical Calculation & Assuming values:-
Q= 5000 microns = 5mm
R= 1mm
Size of tool ( Diameter=10mm)
No. of steps = length/ease of cut = 80/5= 16
Hence it will cut/drill the workpiece in 16 steps & after every step it will go back by 1mm.
 |
| Image of the workpiece designed with solid works |
Solution:- The Code and the machined workpiece is :--
CODE:-
O1187;
G40G80;
G28U0W0;
M04S2000;
T0101M08;
G00X0Z10;
G00Z2;
G74R1.0;
G74Z-80Q5000F0.5;
G00Z2;
G28U0W0;
M09;
M30;
The Machined Workpiece:-
 |
| Machined Workpiece ( Machined with SSCNC Fanuc-oit) |
NOTE :- The Software used for the operation is SSCNC (Fanuc-oit)
Thank you ...
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