航空制造数控铣削效率测评及管控研究

Research on Numerical Control Milling Efficiency Evaluation and Control of Aeronautical Manufacturing

针对离散型航空制造企业数控铣削加工效率的提升,通过利用六西格玛的工具和方法,融合国际设备综合效率(Overall Equipment Effectiveness,OEE)核心思想,基于VERICUT仿真软件,统计分析了某航空企业的铝合金零件程序样本,找出了低效程序的部分共性问题,通过引入效率基线的概念,尝试控制程序材料去除率(Material Removal Rate,MRR)、面成型率(Surface Machining Rate,SMR)、空刀率等关键指标,提出了一种数控铣削效率的测评方法以及程序管控思路,能有效从工艺源头控制程序效率,防止低效的程序流入生产现场导致大量的时间浪费,从而提高数字化生产型企业的交付速率,提升企业核心竞争力。

Aiming at improving CNC milling efficiency of discrete aeronautical manufacturing enterprises by using Six Sigma tools and methods and integrating the core idea of international overall equipment efficiency(OEE),and the sample of aluminum alloy parts produced in an aviation enterprise is statistically analyzed based on VERICUT simulation software.Besides,several common problems of inefficient programs are identified.By introducing the concept of efficiency baseline,the project finds a considerable way to control the key factors such as material removal rate(MRR),surface machining rate(SMR),empty knife rate,etc.Finally,a numerical control milling efficiency evaluation method and program control ideas are proposed,which can be used to control the efficiency of the program effectively by preventing the inefficient programs from flowing into the production line,and a lot of time waste,and labor cost can be reduced.As a consequence,the delivery rate of the digital production enterprise can be improved dramatically,and the core competitiveness of the company will be enhanced.