Okuma OSP-P20L - Page 26

5238-E P-13
SECTION 1 PROGRAM CONFIGURATIONS
Procedure :
1 Calculate the distance between A and B.
LE33013R0300300150002
2 Calculate the cutting time, T, on the basis of the cutting conditions indicated above to feed the
axes along the slot.
LE33013R0300300150003
3 Inside the computer, the distance L3 between A and B is calculated in the following manner.
LE33013R0300300150004
4 The feedrate to be specified in the program is approximately calculated as below:
LE33013R0300300150005
Specify F117 in the program.
A
B
L
2
40
20
L
2=
40
2
+20
2
= 44.7 mm
T =
=
L
2
(Feed per tooth) × (Number of teeth) × (min
-1
)
44.7
0.05 × 2 × 400
= 1.12 min
X-axis travel = 40 mm
C-axis travel = 90° ×
(conversion based on 360° = 500 mm)
Therefore, the distance between A and B is calculated as below:
360°
500 mm
=125 mm
L
3 = 40
2
+ 125
2
= 131.2 mm
F =
T
L
3
= = 117
1.12
131.2