Okuma OSP-P200L Programming Manual page 111

Example Program: Constant Lead Taper Thread
60
N001 G00 X40
N002 G33 X17
N003 X16.5
N004 X16.2
X16.05
N005
Thread lead is commanded as a
lead along the Z-axis.
[Supplement]
1) The sign of an I word determines increasing or decreasing taper ("+" for increasing taper and
"-" for decreasing taper). The plus sign (+) may be omitted.
2) The difference in radius between the starting point and end point is expressed by an I word.
6
90
6
Z96
Z54 17 F1.5
SECTION 7 FIXED CYCLES
1/3 taper, lead 1.5 mm
I = 7 mm
Positioning to the thread cutting starting point,
X = 40 mm (in dia.) and Z = 96 mm, at a rapid
feedrate.
• With an I word in the G33 block,the taper
thread cutting cycle indicated in the drawing
above is carried out.
• X, Z and F words are determined in the same
manner as when cutting a straight thread.
• The value I in this example can be calculated
according to the following equation:
[(96 - 54) × 1/3]/2 = 7
Note that the I word specifies
a difference in radius.
Program X dimension (as a diameter) for
each succeeding thread cutting pass.
5238-E P-98
LE33013R0300900030003