| 基于数理统计的麻花钻几何参数优化研究 |
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| 引用本文： | 周雪峰,方峰,蒋建清. 基于数理统计的麻花钻几何参数优化研究[J]. 工具技术, 2008, 42(11) |
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| 作者姓名： | 周雪峰 方峰 蒋建清 |
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| 作者单位： | 东南大学材料科学与工程学院,211189,南京市;东南大学材料科学与工程学院,211189,南京市;东南大学材料科学与工程学院,211189,南京市 |
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| 基金项目： | 江苏省科技成果转化专项资金 |
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| 摘 要： | 在定数截尾寿命试验基础上研究了麻花钻钻削寿命的分布规律,并利用数理统计方法确定了影响麻花钻钻削寿命及可靠性的关键几何参数及最佳尺寸。结果表明,在本文试验条件下,麻花钻寿命服从威布尔分布规律;钻芯厚度、钻芯增量和直径倒锥度等几何参数对寿命有显著影响,三者的最佳尺寸范围分别为84～97×10-2mm、0.8～1.9mm/100mm、3.0～5.6mm/100mm。
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| 关 键 词： | 麻花钻 可靠性 数理统计 威布尔分布 几何参数 |
Optimization of Geometric Parameters for Twist Drills Based on Mathematical Statistics |
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| Zhou Xuefeng,Fang Feng,Jiang Jianqing. Optimization of Geometric Parameters for Twist Drills Based on Mathematical Statistics[J]. Tool Engineering(The Magazine for Cutting & Measuring Engineering), 2008, 42(11) |
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| Authors: | Zhou Xuefeng Fang Feng Jiang Jianqing |
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| Abstract: | In this paper,lifetime distribution of twist drills was investigated on the basis of type-Ⅱcensoring test,and meantime the critical geometric parameters that had a great effect on the lifetime and reliability of twist drills were studied by mathematical statistics method as well.The results showed that the lifetime of twist drills obeyed Weibull distribution.Additionally,it was found that core thickness,core increment and reverse taper were the key geometric parameters affecting the lifetime,of which the optimal value were determined to be 84～97×10-2mm,0.8～1.9mm/100mm and 3.0～5.6mm/100mm,respectively. |
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| Keywords: | Twist drill reliability mathematical statistics weibull distribution geometric parameter |
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