In electroerosive machining by die-sinking, the shape of a tool called electrode
is reproduced in a metal workpiece. Injection moulds for plastic parts
are very often machined by die-sinking EDM.
The shape of the electrode is that of the part to
be cast later.
In the machining area each discharge produces a
crater (removal of material) in the workpiece and a burn-off (electrode consumption
of the tool) on the tool. There is never any mechanical contact between the
electrode and the workpiece. Usually, the electrode is made of copper or
graphite.
Die-sinking EDM machinery:
Charmilles Roboform 400:
Drill for initial hole Cobra Ba:
Traverses (X/Y/Z)
mm 450 x 320 x 410 - C 360°
Traverses (X/Y/Z)
mm 275 x 250 x 300
Max. size of the workpiece
mm 1.260 x 800
Automatic servo
Head movement manual 200
Max. weight of the workpiece kg 500
Size of the clamping surface
LxB 400 x 200
Size of the work basin
mm 1.000 x 800 x 310
Tool changer with different
die-sinking electrodes
