
435Combined Machining Processes
13.3.3 Abrasive Electrodischarge Machining
This combined process is based on EDM, where free abrasive grains, such as
silicon carbide powder, are added to dielectric liquid as shown in Figure 13.10.
In addition to the major EDM thermal phase, mechanical abrasion assis-
tance is added. Mixing silicon powder into the dielectric reduces electrical
AEDG
Workpiece
Servo controlled feed
Dielectric
Abrasive wheel
EDM sparks
Pulsed voltage
+
–
EDM Grinding
FIGURE 13.9
AEDG machining system components.
AEDM
EDM
EDM sparks
Abrasives
Workpiece
Tool
Dielectric + abrasive
Pulsed voltage
(Feed + vibration + orbital motion)
–
+
FIGURE ...