Process machining allowance for reliability analysis of mechanical parts based on hidden quality loss
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Published:2023-08-28
Issue:4
Volume:25
Page:
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ISSN:1507-2711
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Container-title:Eksploatacja i Niezawodność – Maintenance and Reliability
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language:
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Short-container-title:Eksploatacja i Niezawodność – Maintenance and Reliability
Author:
Wang Jingang,
Liu XintianORCID,
Wang Xu,
Jin Kai
Abstract
The machining allowance variation is significant for the reliability of a part during the machining process. Usually, when the machining allowance of a part increases, the machining and production cost also increase. When the machining allowance decreases, the machining surface will have defects. The parts will produce many scraps and reliability will decrease. The machining allowance of a part consists of multiple process machining allowances. To analyze the impact caused by machining allowance variation, the hidden quality loss and process machining allowance are combined through the process capability index (PCI). Then the asymmetric quadratic quality loss function (AQF) and quadratic exponential function (QEF) are used to analyze them. A prediction model of hidden quality loss of process machining allowance is proposed. On the premise that the quality characteristic value obeys normal function distribution, a numerical model is given and used to obtain process machining allowance-inherent reliability of the product. The actual case is used to compare and verify the two models.
Publisher
Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
Subject
Industrial and Manufacturing Engineering,Safety, Risk, Reliability and Quality