G76 Threading cycle (cnc programing)

 MINOR DIA CALCULATION

PITCH 2.0X0.64=1.28
1.28= THREAD HEIGHT(one side) 
1.28X2=2.56(both side) 
 MAJOR DIA=45.0
                        - 2.56  
 MINOR DIA=  42.44


 We do THREAD CALCULATION according to the above format, now let's see in the program

G76  P1e 0I 6h  Q8R    Rk
G76  Xm  Zo  Px  Qw FT

P=
1e= Idle Pass/ finishing pass
0I=  champring amount
6h= thread angle/ insert angle

Q= 
8R= minimum depth of cut

R= 
k= finishing allowance

M=minor diameter of the thread  in case exturnal thread . Mejor dai in internal thread

O= thread length

X= hight of thread / depth of thread

W=depth of cut in first pass

T= lead or pitch of thread 

Example program m45X2

O008
G28U0. 0W0.0
T0808
GoX48. Z5. 
G97S800M04
G0Z3. 
G76P030060 Q50R30
G76 X42. 44 Z-15.P1280 Q100
F2. 0
G0X48. Z10. 
G97 M05
M09
G28U0. 0W0.0
M01
M30






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