SW4000 USER’S MANUAL
VER5.13 35
Chapter 5 EDM
(ELECTRICAL DISCHARGE MACHINING)
Note: Only SW4000-E provides EDM function.
DRO will send out a signal and machining will stop as soon as the display value is equal to the
expectant .
SW40000E is equipped with 7 EDM modes:
MODE 1 manual mode 1
MODE 2 automatic mode 1
MODE 3 manual mode 2
MODE 4 manual mode 3
MODE 5
manual
mode 4
MODE 6 automatic mode 2
MODE 7 automatic mode 3
EDM mode is set in initial system settings.
NOTES: Pay attention to the relay mode.
Table 1: the difference between 7 EDM modes: (X: No have;
√
: Have;
↑
: Up;
↓
: Down)
EDM
MODE
Edge detect
Direction of machining as
depth is minus
Exit EDM after machine
first hole
Z axis direction
1
X
↓
√
↓
2
√
No minus depth
X
↓
3
X
↓
X
↓
4
X
↑
√
↓
5
X
↑
X
↓
6
√
↓
(No plus depth)
X
↑
7
√
↓
X
↑
Positive direction of Z axis is down except mode 6: which means the display value will increase with
the increasing depth during machining.
SW4000E provides fireproof function. During EDM, charcoal will be produced on the machined
surface. With accumulating charcoal, the electrode will beyond liquid level, which could lead a fire. If
fireproof height is set, EDM will stop, the DRO will send an alarm and fire is avoided.
processing
direction
processing
direction
Fig 1 : Difference among EDM modes
-A
-A
-B
-B
starting
position
target
position
target
position
starting
position
MODE1,3
MODE 4~7
electrode
workpiece
fi
re
p
ro
o
f
h
ei
g
h
t
Fig.3 : fireproof hight
positive
direction
Z
Fig 2
negative
direction
