| 单侧公差及非对称公差过程能力指数 |
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| 引用本文： | 宋祥彦. 单侧公差及非对称公差过程能力指数[J]. 世界标准化与质量管理, 2009, 0(4): 12-18 |
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| 作者姓名： | 宋祥彦 |
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| 作者单位： | 青岛海信智能商用设备有限公司,山东,青岛,266071 |
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| 基金项目： | 作者研究过程中曾受中国质协副会长张公绪教授的鼓励、马林秘书长的支持及美国质量学会六西格玛论坛编辑Noel Wilson以及《质量技术杂志》的评论家们帮助,于振凡老师在审稿中也提出了宝贵意见,在此作者一并表示衷心感谢! |
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| 摘 要： | 本文在已发表的过程能力指数4个基本特性基础上，通过引入“目标值M”，将单侧公差问题科学地转化为对称公差求解，不仅推导出单侧公差无偏情况下的CpUr和CpLr公式，而且推导出单侧公差有偏情况下的CpUk和CLk公式；通过设置辅助线U或L将非对称公差问题科学地转化为对称公差求解，不仅推导出非对称公差无偏情况下的Cpa公式，而且还推导出有偏情况下的Cpak公式。此外，列举典型案例详细分析和比较。
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| 关 键 词： | 过程能力指数 对称公差 单侧公差 非对称公差 |
Process Capability Index on Unilateral and Asymmetric Tolerance |
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| SONG Xiang-yan. Process Capability Index on Unilateral and Asymmetric Tolerance[J]. World Standardization & Quality Management, 2009, 0(4): 12-18 |
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| Authors: | SONG Xiang-yan |
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| Affiliation: | SONG Xiang-yan ( Hisense Intelligent Commercial Equipment Co.Ltd., Qingdao 266071, China) |
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| Abstract: | On the basis of the four basic properties of process capability index published, the problem of unilateral tolerance is to be changed into symmetrical tolerance scientifically by introducing ＂the target value M＂, not only the CpUr and CpLr formulas for unilateral tolerance with no deviation are deduced, but also the CpUk and CpLk formulas for unilateral tolerance with deviation; the problem of asymmetric tolerance is to be changed into symmetricl tolerance scientifically by means of setting the line of U or L, not only the Cpa formula for asymmetric tolerance with no deviation is to be put forward, but also the Cpak formula for asymmetric tolerance with deviation. Besides, the typical case is cited to analyze and compare with. |
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| Keywords: | process capability index symmetrical tolerance unilateral tolerance asymmetric tolerance |
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