| 切削参数变化对切屑断裂应变的影响 |
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| 引用本文： | 张慧萍,王珏,石文勇.切削参数变化对切屑断裂应变的影响[J].机械工程师,2009(6):78-80. |
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| 作者姓名： | 张慧萍 王珏 石文勇 |
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| 作者单位： | [1]哈尔滨理工大学机械动力学院,黑龙江哈尔滨150080 [2]哈尔滨理工大学工程训练中心,黑龙江哈尔滨150080 [3]哈尔滨中庆燃气股份有限公司,黑龙江哈尔滨150096 |
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| 基金项目： | 黑龙江省青年科学技术专项资金资助项目（QC05C07,QC08C54）;哈尔滨市青年科学研究基金资助项目（2005AFQXJ029,2008RFQXG064）. |
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| 摘 要： | 以影响切屑断裂应变的重要因素为基础，对切屑断裂应变随切削速度v、进给量f、背吃刀量ap的变化规律进行了理论分析；分析结果显示：高速切削时，当进给量f和背吃刀量ap不变的情况下，随着切削速度v的增加，切屑的断裂应变εB先是增加，然后又减小；当切削速度v和背吃刀量ap不变的情况下，随着进给量f的增加，切屑的断裂应变εB是减小的。当切削速度v和进给量f不变的情况下，随着背吃刀量ap的增加时，切屑断裂应变εB基本是定值。以上分析结果对了解切削参数对切屑折断性能的影响具有重要的意义。
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| 关 键 词： | 切削参数 断裂应变 理论分析 |
Effect of Cutting Parameters on Chip Fracture Strain |
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| Affiliation: | ZHANG Hui-ping, WANG Jue, SHI Wen-yong(1a.School of Mechanical ＆ Power Engineering,1b. Engineering Training Center, Harbin University of Science and Technology,Harbin 150080, China; 2. Harbin Zhongqing Gas Co., Ltd. Harbin 150096, China) |
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| Abstract: | Based on the main factors which affect chip fracture strain, the effects of cutting speeds v, federate f, and depth of cut ap, on chip fracture strain were theoretically analysed. The analysis results showed that when feedrate f and depth of cut ap were constant values, chip fracture strain εB increased first and then diminished as cutting speed increasing. When cutting speeds v and depth of cut ap were constant values, chip fracture strain εB diminished as feedrate f increasing. When cutting speeds v and federate f were constant values, chip fracture strain εB was a constant value as depth of cut ap increasing. The analysis result above is of great significance to know the effect of cutting parameters on chip breaking performance. |
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| Keywords: | cutting parameters chip fracture strain theoretically analyse |
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