The present work designed and assessed a more sustainable vegetable-oil-based MQL intermittent turning process to efficiently reduce virgin vegetable oil and cutting tool. Modified waste cooking oil and multifunctional biomimetic microstructure were combined in the process. Virgin rapeseed oil (VRO) and modified waste rapeseed oil (MWRO) were utilized to form the base oil of the nanofluid bio-lubricant utilized in MQL. The volume ratio V_r of MWRO to VRO was in the range of 0 to 1. Multifunctional biomimetic microstructure was employed for the tool surface to realize bio-lubricant storage, impact resistance and bio-lubricant transport. The wedge angle A_w of the microstructure varied from 45° to 65°. First, the viscosity and the remaining amount of base oil were analyzed for the machining process. Then, this work studied the transport characteristic of the multifunctional biomimetic microstructure. Finally, tool wear rate was theoretically and experimentally investigated for varying combinations of base oil and multifunctional biomimetic microstructure. The results revealed that the average base oil viscosity, the average base oil remaining amount and the average transport speed all increased first and then decreased as V_r or A_w grew larger. The proposed process resulted in efficient reduction of virgin vegetable oil and cutting tool compared with conventional vegetable-oil-based MQL machining condition. The virgin vegetable oil and the cutting tool can be separately reduced by 33% and 35% when V_r = 0.5 and A_w = 55°.

目前的工作设计和评估了一种更可持续的基于植物油的 MQL 间歇车削工艺，以有效减少原始植物油和切削刀具。在此过程中结合了改性废食用油和多功能仿生微结构。使用初榨菜籽油 (VRO) 和改性废菜籽油 (MWRO) 形成 MQL 中使用的纳米流体生物润滑剂的基础油。体积比V _ř MWRO至VRO在0到1的多功能仿生微结构的范围内采用在工具表面实现生物润滑剂贮存，耐冲击性和生物润滑剂输送。楔角A _w微观结构的变化范围从 45° 到 65°。首先，分析了加工过程的粘度和基础油的剩余量。然后，这项工作研究了多功能仿生微结构的传输特性。最后，针对基础油和多功能仿生微结构的不同组合，对工具磨损率进行了理论和实验研究。结果表明，平均基础油粘度、平均基础油剩余量和平均输送速度均随着V _r或A _w呈先增大后减小的趋势。变大了。与传统的基于植物油的 MQL 加工条件相比，所提出的工艺可有效减少原始植物油和切削刀具。当V _r  = 0.5 和A _w  = 55°时，初榨植物油和刀具可分别减少33%和35% 。