Aiming at the problem of quantitative evaluation of accuracy retentivity, the accuracy degradation rate (ADR) evaluation index is proposed and combined with accuracy life (AL) to quantitatively evaluate accuracy retentivity. In terms of accuracy degradation mechanism analysis, the standardized analysis process of manufacturing and assembling error items influencing the meta-action accuracy and accuracy retentivity is proposed, then based on these items' variation mechanism caused by looseness, abrasion, deformation and aging, a generalized three-stage analysis method of degradation mechanism analysis is proposed and residual accuracy life and accuracy life cycle are defined. Meta-action is used to illustrate the evaluation and analysis method proposed and the example of accuracy degradation caused by residual stress is used to verify the feasibility. The evaluation and analysis method provides new thought and reference for the research of mechanical products' accuracy-related quality characteristics.
|Translated title of the contribution||Quantitative Evaluation of Accuracy Retentivity and Analysis of Accuracy Degradation Mechanism|
|Original language||Chinese (Traditional)|
|Number of pages||21|
|Journal||Jixie Gongcheng Xuebao/Journal of Mechanical Engineering|
|Publication status||Published - 20 May 2022|
Bibliographical notePublisher Copyright:
© 2022 Journal of Mechanical Engineering.
- Accuracy degradation rate
- Accuracy retentivity
- Error items
- Residual stress
ASJC Scopus subject areas
- Mechanical Engineering
- Computer Science Applications
- Applied Mathematics