Abstract:
This paper presents a novel hybrid machining process
(HMP) that combines cutting action with machining
using discharge pulses.Working conditions for a machine tool
capable of combining micro-electro discharge machining
(EDM) with milling is still an ill-defined problem relying on
heuristics because there is insufficient knowledge of the discharge
mechanism and the effects of machining parameters.
The proposed HMP that combines micro-EDM and milling
processes was applied to a steel alloy (AISI 1045) as the
workpiece and end mill tungsten carbide as the tool electrode.
Test results obtained from a number of experiments showed
that the developed HMP yields reasonable machining time
and surface roughness. Significant controlling variables for
the machining response were identified and ranked using the
Taguchi method. Furthermore, the response surface method
was used to develop an empirical model based on the correlation
between input variables and output responses.
