
Zl3 = Zl2 – d
:
Zln-1 = Zln-2 – d
Zln = Zn-1– d
In case of n=0, a tool moves as follows.
Example of
Programming
(Diameter designation, metric input)
:
G40 X70. Y50. ; ------ Offset cancellation
M10 ; ------ Set X-axis diameter mode (PMC signal G0296<DI1> is turned
: on to 1)
G68 X0Y0Z0I0J1K0R-90.; ------ Convert Z-axis to X-axis
G68 X0Y0Z0I1J0K0R90; ------ Convert Y-axis to Z-axis
G18 ; ------ Select X-Z plane
G00 X55. Z5.; ------ Move to the cutting start point
G740 B0 T2. N2. P30. E5. F2500 Q5. R1. U2. W1. H0. J70. K2. ; --- Specify Roughing
M98 P3311 ; ------ Specify the Sub program of Finishing shape
G750 B0. T2. E5. F3500 N2. P30. ; --- Specify Finishing of Trapezoidal grooving
M98 P3311 ;
G0 Z5.;
G69 ;
(2)
(1)
(3)
Zc
Zs
Tool moves in the following order
(2) Æ (2) Æ (3)
Fig.4.1.6
Fig.4.1.7
Cutting start
Point
Ø50.
Ø50.
Ø50.
Ø55.
5.
5.
1.
5.
5. 5.
15.
5. 5.
● ●
Ø50.