超声磨削表面残余应力工艺实验与回归分析

何玉辉; 周剑杰; 周群; 唐楚; 万荣桥; 唐进元

doi:10.3969/j.issn.0258-2724.2017.03.024

超声磨削表面残余应力工艺实验与回归分析

doi: 10.3969/j.issn.0258-2724.2017.03.024

基金项目:

国家自然科学基金资助项目（51535012）

详细信息

作者简介:
何玉辉(1974—),男,副教授,博士,研究方向为机械设计及理论,电话:18975837931,E-mail:csuhyh@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2015-10-27
- 刊出日期: 2017-06-25

Technological Experiment and Regression Analysis of Surface Residual Stress in Ultrasonic Grinding

摘要

摘要: 为了探索超声磨削的工艺特性，研制了轴向超声磨削加工实验装置，对45钢进行实验研究，采用iXRD便携式高速残余应力分析仪测量磨削表面残余应力，从实验角度分析磨削工艺参数对残余应力的影响，建立了残余应力关于磨削深度、超声振幅和砂轮线速度的回归方程，并用该方程预测表面残余应力.研究结果表明：普通磨削和超声磨削均在试件表面产生残余压应力，且轴向方向的残余压应力显著大于磨削方向的残余压应力；磨削深度和超声振幅能够增大残余压应力，砂轮线速度的增加会降低残余压应力；预测值与实验值的最大相对误差不超过5%，验证了该模型能有效预测超声磨削加工表面残余应力.
- 残余应力 /
- 超声振动磨削 /
- 回归分析 /
- 预测模型
Abstract: In order to explore the process features of ultrasonic grinding, an experimental investigation was conducted on 45 steel using a self-developed axial ultrasonic grinding apparatus, and the surface residual stress of workpieces was measured using an iXRD residual stress analyzer. Based on the experimental results, influences of grinding process parameters on the residual stress were analyzed, and regression equations of residual stress against the grinding depth, the ultrasonic vibration amplitude, and the circular linear speed of the grinding wheel were established, with which the residual stress was predicted. Results show that residual compressive stress is produced in workpiece surface in both the ordinary grinding and ultrasonic grinding, and the residual stress in the axial direction is significantly greater than that in the grinding direction. In addition, the residual compressive stress increases with an increase in grinding depth and ultrasonic vibration amplitude, but decreases with an increase in the circular linear speed of the grinding wheel. The maximum relative error between the predicted value and test value is less than 5%, which proves that the predictive regression model can effectively predict the surface residual stresses in ultrasonic grinding.
- residual stress /
- ultrasonic vibration grinding /
- regression analysis /
- predicted model

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参考文献(15)

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文章访问数: 463
HTML全文浏览量: 65
PDF下载量: 163
被引次数: 0

超声磨削表面残余应力工艺实验与回归分析

doi: 10.3969/j.issn.0258-2724.2017.03.024

作者简介: 何玉辉(1974—),男,副教授,博士,研究方向为机械设计及理论,电话:18975837931,E-mail:csuhyh@163.com

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出版历程

Technological Experiment and Regression Analysis of Surface Residual Stress in Ultrasonic Grinding

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出版历程

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作者简介:
何玉辉(1974—),男,副教授,博士,研究方向为机械设计及理论,电话:18975837931,E-mail:csuhyh@163.com