Wire EDM Machine Operation Chapter 1
Copyright November, 98 Page 1-13 Sodick Inc.
TO CUT FASTER TO CUT SLOWER
Raise ON Lower ON
Lower OFF Raise OFF
Raise P Lower P
Lower A Raise A
O
O
T
T
H
H
E
E
R
R
G
G
E
E
N
N
E
E
R
R
A
A
L
L
T
T
I
I
P
P
S
S
A
A
B
B
O
O
U
U
T
T
W
W
I
I
R
R
E
E
E
E
D
D
M
M
START FROM A START HOLE AND RUN IN SUBMERGE MODE .
You will find that trying to start from an edge is undesirable for two reasons. First the
flushing will always be poor when you start from an edge. You may have to lower the
power until the wire gets into the workpiece. Second, for hardened workpieces, the stress
from heat treatment is different around the edges of the part than it is in the middle of the
part and the material may spring. Wire cutting relieves stress in the piece. For these
reasons, we recommend always starting from a start hole and never coming within about
.500" of the edge of the rough stock.
CHECK FOR WIRE VERTICAL ALIGNMENT OFTEN.
It is a good habit to check the vertical alignment prior to machining a workpiece. You
must confirm that the wire is vertical to keep from machining unwanted taper in the part.
MAKING PUNCHES AND DIES FIT.
One very important consideration when machining punches and dies with small clearance
is that a small radius MUST be programmed on ALL outside square corners of a punch.
If it is not programmed, the punch will not fit into the die, due to the small radii generated
on the inside corners of the die from the radius of the wire. This is especially true when
the amount of die clearance is very small. If the die clearance is quite large, you may get
away with not doing this, but the die clearance will not be uniform throughout the punch
and die shape.
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