To tackle the efficiency and precision control issues in the complex five-axis machining of aeronautical turbines

this study thoroughly investigates the effects of machining parameters on surface roughness and processing time using direct-drive machine tools. The superiority of direct-drive machine tools over conventional ones in terms of precision and speed is initially established through comparative machining. Research focusing on the origin coordinates then reveals a significant enhancement in machining efficiency

particularly when the origin is near the centers of the A and C axes. Employing an orthogonal experimental approach

the study examines spindle speed

feed per tooth

and cutting width

identifying the feed per tooth as the primary factor influencing surface roughness

followed by cutting width

with spindle speed having a lesser impact. The study achieves optimal results under parameters that maintain a roughness below 1.6 μm: 20000 r/min spindle speed

0.03 mm feed per tooth

and 0.6 mm cutting width. These optimized parameters not only improve machining efficiency by 43.3%

but also ensure quality

providing vital technical insights for the precision machining of aeronautical turbines and offering both practical and theoretical guidance for the efficient machining of complex parts on direct-drive machine tools.