Optimization and Investigation of the Initial Parameters Effects on Machining Forces in Aerial Graphite Part

Graphite has recently received a lot of attention due to its numerous applications as well as its unique structure. Machining and machining conditions optimization are very important in reducing machining forces among other benefits. In this study, the effect of machining parameters such as spindle speed, cutting depth and feed rate on the machining forces was investigated and the optimization of these conditions was done to minimize the forces. This research uses the design of experiments to optimize the initial parameters to minimize machining forces. These experiments are based on the response surface method and analysis of variances used to identify the most effective factors in machining forces. The values of the primary parameters that provide the experiments design software are considered to be the spindle speed between ۱۰۰۰ and ۳۰۰۰ rpm, the feed rate between ۱۰۰۰ and ۳۰۰۰ mm/min, and the cutting depth between ۳ and ۹ mm. The results show that the machining forces increase by increasing the cutting depth and feed rate and decrease by increasing the spindle speed. The results obtained from the optimization also indicate that the machining forces reduced to their minimum value at the feed rate of ۳۱۸.۲۰۷۲ mm/min, the cutting depth of ۰.۹۵۴۶ mm and the spindle speed of ۲۳۵۶.۷۴۳۹ rpm.

Keywords:

DOE , Graphite , feed rate , spindle speed , machining forces