| 正交微切削中切削力预测模型研究 |
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| 引用本文： | 吴继华,刘战强.正交微切削中切削力预测模型研究[J].武汉理工大学学报(交通科学与工程版),2010,34(1):130-133. |
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| 作者姓名： | 吴继华 刘战强 |
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| 作者单位： | 山东大学机械工程学院,济南,250061 |
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| 基金项目： | 国家自然科学基金项目资助(批准号:50675122) |
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| 摘 要： | 从位错密度出发，基于应变梯度理论建立了正交微切削力的预测模型，并设计了正交微切削实验，验证了微切削力预测模型的可靠性．用此模型预测微切削力与实验数据相比，平均误差不超过5％，更好地反映微尺度特征．分析微切削力实验数据发现：在正交微切削中主切削力基本是大于进给力的；当在相同切削速度时，进给量越小时，主切削力和进给力的变化程度越大；主切削力随进给量的增大而增大，而进给力随进给量的增大而减小．
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| 关 键 词： | 应变梯度理论 微切削 切削力 预测模型 |
Prediction of Forces in Orthogonal Micro-cutting Based on Strain Gradient Theory |
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| Wu Jihua Liu Zhanqiang.Prediction of Forces in Orthogonal Micro-cutting Based on Strain Gradient Theory[J].journal of wuhan university of technology(transportation science&engineering),2010,34(1):130-133. |
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| Authors: | Wu Jihua Liu Zhanqiang |
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| Institution: | School of Mechanical Engineering/a>;Shandong University/a>;Jinan 250061/a>;China |
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| Abstract: | The prediction model for cutting forces in orthogonal micro-cutting was developed based on strain gradient plasticity theory considering the density of dislocations.The orthogonal micro-cutting experiments were conducted to validate the prediction model of micro-cutting forces.Results show that an average percentage error is lowers than 5%,it can capture the size effect.The micro-cutting force data indicate: The cutting force is larger than the feed force normally;The variation of cutting force and feed for... |
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| Keywords: | strain gradient micro-cutting cutting forces prediction model |
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