YASKAWA yasnac lx3 - Page 47

Table 2.16
=
Feedrates are limited by spindle-speed S as
follows.
Metric Output I F(E,XS<= 24,000mm/min
Metric
Input
Inch
Input
Metric
Input
inch
Input
inch Output F(E)x S S 2,400 in./min
The upper limit of X-axis speed component is
half the above.
(4) Command format of threadcutting is shown
below.
Table 2.17
Metric
output
F24 I
FO,CxJOl–F19.6850 in.
E 26
I
E 0,~0004-E19.685000 in.
F 32
I
FO.01 -F 1270.00 mm
Type
I
Command format
E34 I EO.0303-E1270.0000mm
Inch
output
Straight
Thread
R~
F24 \ FO.COl-F50.0000in.
E 26
EO.O3OO1O-F5O.OOCOOO in.
F code is for normal thread cutting.
E code is for precise thread cutting.
“dI=*
(3) The direction of lead specified by F and E
codes is shown below.
EXAMPLE : Straight Thread
Direction of Lead
Thread leac[ L = 5.0 mm
6~=5. Omm
tiz=3. Omm
Cutting depth = 1.0 mm
Limitation of Taper Angle
I
Direction of Lead
(x,z)
+x
~~~~
Lead in the direction of Z-axis
L~
o
+2
0> 45”
Lead in the direction of X-axis
+x
I
c-
---------
Y
(iJ GO(I
@ G32
GOO
G32
GOO
–x
u--42. ;
w--68. F5. O
IJ,Q. ;
w 68. ;
u-44. ;
w--68. ;
U44. ;
I
I
/
I
END POINT
START PO IN
L [Lead)
.-— ——
_12-
+Z
T
Fig. 2.19
I
(’
+2