航空领域国产加工中心速度谱的研究

Research on the Velocity Spectrum of Domestic-made Machining Centers Applied in The Aviation Domain

为了初步建立航空领域国产加工中心速度谱及其分布模型,对航空领域若干生产企业所使用的7台国产加工中心进行了平均每台1974小时的现场连续跟踪记录,对采集到的加工中心的运行情况、加工零件数目、切削参数、零件每一工步的加工时间等数据进行统计和分析,初步建立了航空领域国产加工中心速度谱,并提出了运用模拟退火优化方法对速度谱的概率密度以及累积分布的数学模型进行参数估计及优化,通过Matlab软件对所建立的模型进行拟合及残差分析,得到了较好的拟合效果。

Based on the operating condition, number of parts machined and cutting parameters gathered and collected via continuously on-site tracing of 7 machining centers for 1974 hours each, this paper has formatted the mathematical model, including the probability density function and the cumulative distribution function of the velocity spectnma of domestic-made machining centers used in aircraft manufacturing factories by mean of data processing and statistics with the Simulated Annealing Method under Matlab, gaining the estimated parameters and residual errors of each chosen distribution model. The fitting result turned out to be relatively good.