| 精密干切削淬硬零件表面完整性试验分析 |
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| 引用本文： | 张雪萍,赵国伟,蒋辉,C.R. Richard. 精密干切削淬硬零件表面完整性试验分析[J]. 上海交通大学学报, 2006, 40(6): 922-926 |
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| 作者姓名： | 张雪萍 赵国伟 蒋辉 C.R. Richard |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030 |
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| 摘 要： | 试验分析了聚晶立方氮化硼(PCBN)刀具在锋利无润滑状态下精密车削硬度为HRC62轴承钢GCr15时,切削参数(切削深度、切削速度和进给量)对表面粗糙度、残余应力和表面变质层的影响规律.在选择的切削用量范围内,以零件表面完整性为目标函数,采用正交试验法对切削参数进行优选,并对优选参数进行验证试验.结果表明,淬硬零件在高精度数控机床上进行精密干切削加工,能获得优越的表面完整性,即优异的表面精度、深度约为0.1 mm的表面残余压应力、热损伤层完全消失的表面物理性能.
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| 关 键 词： | 精密切削 淬硬轴承钢 表面粗糙度 残余应力 热损伤层 |
| 文章编号： | 1006-2467(2006)06-0922-05 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-11 |
Experimental Investigation on The Surface Integrity of Hard Machined Components by Super-finish Turning |
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| ZHANG Xue-ping,ZHAO Guo-wei,JIANG Hui,C.R. Richard. Experimental Investigation on The Surface Integrity of Hard Machined Components by Super-finish Turning[J]. Journal of Shanghai Jiaotong University, 2006, 40(6): 922-926 |
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| Authors: | ZHANG Xue-ping ZHAO Guo-wei JIANG Hui C.R. Richard |
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| Affiliation: | School of Mechanical Eng. , Shanghai Jiaotong Univ. , Shanghai 200030, China |
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| Abstract: | A surface integrity of hardened bearing steel GCr15 in super-finish hard dry turning by sharp polycrystalline cubic boron nitride(PCBN) inserts was investigated.Taguchi method is employed to optimize the surface roughness,residual stress and thermal damage layer of the hardened workpiece by different combination of cutting speed,cutting depth and feed rate.The main objective is to achieve an optimal turning parameter combination and further to enhance the hard turned component's surface integrity by PCBN insert.The followed validation experiments reveal it is possible to obtain a superior surface finish,beneficial compressive residual stresses,without thermal damage layer appearance.It provides a fundamental way for hard turning application in super finish machining hardened bearing steel. |
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| Keywords: | super-finish turning hard bearing steel surface roughness residual stresses thermal damage layer |
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