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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (7): 1299-1306    DOI: 10.3785/j.issn.1008-973X.2013.07.025
机械与能源工程     
基于修正Preston方程的气压砂轮加工特性
计时鸣, 曾晰, 金明生, 谭大鹏
浙江工业大学 特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江 杭州 310014
 Processing characteristics of pneumatic wheel based on modified Preston equation
JI Shi-ming, ZENG Xi, JIN Ming-sheng, TAN Da-peng
Key Laboratory of E&M,  Ministry of Education & Zhejiang Province,
Zhejiang University of Technology, Hangzhou 310014, China   
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摘要：

为了解决高硬度、高耐磨激光强化自由曲面难以高效光整的问题,提出软固结磨粒气压砂轮加工方法. 通过高聚物黏结剂在充气柔性砂轮表面构成磨粒层,使每颗磨粒受力后可以局部微动,影响周边磨粒群的受力状况而发生群体效应,达到软性条件下的应力集中,形成高效切削. 以拉宾诺维奇(Rabinoweizc)磨损理论为依据,引入硬度比例系数和表面硬度系数,结合磨粒粒度对材料去除的影响,给出修正系数. 结合弹性力学理论,对柔性基体供力环境下的材料去除进行应力修正,给出修正的Preston方程,提出该方法材料去除的量化模型. 建立砂轮表面磨粒群在任一接触状态下的速度计算公式,通过ANSYS仿真给出下压量与压力的关系谱图. 修正系数经实验验证基本与理论分析相符,证明该方法可以降低材料去除的量化误差. 根据不同磨粒粒度的实验对比,给出针对高硬度表面光整的工艺参照.
Abstract:

A new precision finishing method based on soft-consolidation abrasives pneumatic wheel was proposed in order to solve the problems of finishing method to mould’s freeform surface with high hardness and high resistance. Polymer binder was used to form a layer of abrasives on the surface of pneumatic wheel. Then every abrasive had micro-movement under the pressure and it would affect the adjacent abrasives to form group effect to achieve high-efficient cutting by concentration of stress. According to the Rabinoweizc’s theory, the correction coefficient was given for Preston equation with the introduction of hardness proportion coefficient, surface hardness coefficient and particle size. Combined with the theory of elasticity, stress coefficient was modified under the situation of soft-consolidation. Quantitative model of the material removal was presented by the modified Preston equation. The velocity equation was constructed for any condition of contact. Simulation was found for studying on the relationship between feeding distances and presure by ANSYS. The empirical results show that the correction coefficient accords with the theoretical analysis and it brings in great reduction of the removel quantization error. With the contrast of experiments with different abrasive size, processing parameters were given for further study.
出版日期: 2013-07-01
:  O 359  
基金资助:

国家自然科学基金资助项目（51175471，50575208，51205358）；浙江省自然科学基金资助项目(M503099）.
通讯作者: 金明生，男，讲师.     E-mail: jinmingsheng@zjut.edu.cn
作者简介: 计时鸣（1957-），男，教授，博导，从事先进加工技术的研究. E-mail: jishiming@zjut.edu.cn
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引用本文:

计时鸣, 曾晰, 金明生, 谭大鹏. 基于修正Preston方程的气压砂轮加工特性[J]. J4, 2013, 47(7): 1299-1306.

JI Shi-ming, ZENG Xi, JIN Ming-sheng, TAN Da-peng.  Processing characteristics of pneumatic wheel based on modified Preston equation. J4, 2013, 47(7): 1299-1306.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2013.07.025    或    http://www.zjujournals.com/eng/CN/Y2013/V47/I7/1299

［1］ KIM J D, LEE M H, LEE S J, et al. Laser transformation hardening on rod-shaped carbon steel by Gaussian beam ［J］. Transactions of Nonferrous Metals Society of China, 2009, 19(4): 941-945．
［2］ KWOK C T, LEONG K I, CHENG F T, et al. Microstructural and corrosion characteristics of laser surface-melted plastics mold steels ［J］. Materials Science and Engineering A, 2003, 357(1/2): 94-103．
［3］ ZHANG Song, LI Jian-feng. Tool wear criterion, tool life, and surface roughness during high-speed end milling Ti-6Al-4V alloy ［J］. Journal of Zhejiang University: Science A, 2010, 11(8): 587-595．
［4］ 吴红兵, 贾志欣, 刘刚, 等. 航空钛合金高速切削有限元建模［J］. 浙江大学学报：工学版, 2010, 44(5): 982-987．
WU Hong-bing, JIA Zhi-xin, LIU Gang, et al. Finite element modeling of Ti6Al4V alloy high speed cutting ［J］. Journal of Zhejiang University: Engineering Science, 2010, 44(5): 982-987．
［5］ 李东明,李丽,马先英, 等. 模具自由曲面自动研磨加工实验研究［J］. 组合机床与自动化加工技术,2006, 28(2)：86-88．
LI Dong-ming,LI Li,MA Xian-ying,et al.Research of auto-polishing free-curve-surface of molds experiment ［J］. Modular Machine Tool and Automatic Manufacturing Technique,2006,28(2)：86-88．
［6］ 戴一帆, 张学成, 李圣怡, 等. 确定性磁射流抛光技术［J］. 机械工程学报, 2009, 45(5): 171-176．
DAI Yi-fan, ZHANG Xue-cheng, LI Sheng-yi, et al. Deterministic magnetorheological jet polishing technology ［J］. Chinese Journal of Mechanical Engineering, 2009, 45(5): 171-176．
［7］ KURIYAGAWA T, SAEKI M, SYOJI K. Electrorheological fluid-assisted polishing for small three-dimensional parts ［J］. Journal of the International Societies for Precision Engineering and Nanotechnology, 2002, 26(4): 370-380．
［8］ LUO Q, RAMARAJAN S, BABU S V. Modifcation of the Preston equation for the chemical-mechanical polishing of copper ［J］. Thin Solid Films, 1998, 335(3): 160-167．
［9］ WRSCHKA P, HERNANDEZ J, HSU Y, et al. Polishing parameter dependencies and surface oxidation of chemical mechanical polishing of al thin films ［J］. Journal of the Electrochemical Society, 1999, 146(7): 2689-2696．
［10］ TSENG W T, WANG Y L. Re-examination of pressure and speed dependences of removal rate during chemical-mechanical polishing processes ［J］. Journal of the Electrochemical Society, 1997, 144(2): L15-L17．
［11］ 罗虹, 刘家浚, 朱宝亮, 等. 几种不同硬度材料的滑动磨粒磨损特征［J］. 摩擦学学报,1994,14(3): 213-219．
LUO Hong, LIU Jia-jun, ZHU Bao-liang, et al. Sliding abrasive wear characteristics of steels with different hardness ［J］. Tribology, 1994,14(3): 213-219．
［12］ 计时鸣,李琛,谭大鹏, 等.基于Preston方程的软性磨粒流加工特性［J］.机械工程学报, 2011,47（17）：156-163.
JI Shi-ming,LI Chen,TAN Da-peng,et al. Study on machinability of softness abrasive flow based on Preston equation ［J］. Chinese Journal of Mechanical Engineering, 2011,47（17）：156-163.
［13］ SHI F G, ZHAO B. Modeling of chemical-mechanical polishing with soft pads ［J］. Applied Physics A Materials Science and Processing, 1998, 67(1): 249-252.
［14］ 童磊, 谢康和, 卢萌盟, 等. 盾构任意衬砌变形边界条件下复变函数弹性解［J］. 浙江大学学报：工学版, 2010, 44(9): 1825-1830．
TONG Lei, XIE Kang-he, LU Meng-meng, et al. Elastic complex variables solution for general arbitrary ground deformation of tunnels in clays ［J］. Journal of Zhejiang University: Engineering Science, 2010, 44(9): 1825-1830．
［15］ 金明生.模具自由曲面气囊抛光机理及工艺研究［D］.杭州：浙江工业大学,2009:37-44．
JIN Ming-sheng. Gasbag polishing mechanism and processon free-form surface mold ［D］. Hangzhou: Zhejiang University of Technology,2009:37-44．
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