Based on orthogonal experiment for minimum quantity lubrication (MQL) milling of Al–60% Si alloy

the influence of milling parameters on cutting force

cutting temperature and surface roughness is analyzed. Compared with dry cutting

the machining mechanism of MQL milling of high-silicon aluminum alloy is explored. The results show that under the condition of MQL milling

the cutting force is mostly affected by feed per tooth (f

z

) and increases first and then decreases with increase of cutting speed (v

c

). The impact of milling parameters on cutting

temperature is: cutting speed feed per tooth radial cutting width. With the increase of v

c

the growth rate of cutting temperature increases from small to large. When v

c

is 90 m/min

the inhibition effect of MQL on cutting heat is weakened with the highest cutting temperature. Surface roughness is significantly affected by f

z

which increases with the increase of f

z

and the lowest surface roughness is 0.234 μm. Compared with dry milling

feed force and tangential force of MQL processing reduces by 24.3% and 14.0%

respectively

cutting temperature reduces by 23.4% and surface roughness reduces by 13.7%. MQL assisted processing technology can effectively improve the milling performance of Al–60% Si alloy.