超声椭圆振动切削硬质合金脆性-延性转变临界条件研究

段鹏; 焦锋; 赵波; 李杰; 牛赢

doi:10.13433/j.cnki.1003-8728.2017.0715

超声椭圆振动切削硬质合金脆性-延性转变临界条件研究

doi: 10.13433/j.cnki.1003-8728.2017.0715

1.
河南理工大学机械与动力工程学院, 河南焦作 454000

基金项目:

国家自然科学基金项目（51075127）资助

详细信息

作者简介:
段鹏(1975-),副教授,博士研究生,研究方向为精密与超精密加工、特种加工,duanpsj@hpu.edu.cn

通讯作者:
焦锋(联系人),教授,博士,jiaofeng@hpu.edu.cn

计量
- 文章访问数: 234
- HTML全文浏览量: 52
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2016-01-11
- 刊出日期: 2017-07-05

Critical Conditions of Brittleness-ductility Transition in Ultrasonic Elliptical Vibration Cutting of Tungsten Carbide

1.
School of Mechanical and Power Engineering, Henan Polytechnic University, Henan Jiaozuo 454000, China

摘要

摘要: 为了实现硬质合金的高效延性加工，联系硬脆材料表面生成裂纹的临界载荷与超声椭圆振动切削硬质合金的主切削力，建立超声椭圆振动切削硬质合金脆性-延性转变的临界切削深度模型，研究切削速度、刀具圆弧半径、椭圆振动频率、振幅、硬质合金的硬度、断裂韧性与临界切削深度的关系；通过仿切削刻划试验，验证了切削速度与硬质合金的硬度、断裂韧性对临界切削深度的影响规律；对比普通切削，超声椭圆振动切削有利于提高硬质合金的临界切削深度，在改善加工表面质量及精度的前提下，提高了加工效率。
- 硬质合金 /
- 脆性-延性转变 /
- 临界切削深度 /
- 超声椭圆振动切削
Abstract: In order to realize efficiency and ductile machining of tungsten carbide (WC), the model for critical depth of cutting for brittleness-ductility transition of WC in ultrasonic elliptical vibration cutting (UEVC) was established, considering the critical load for generating crack on the surface of hard brittle materials and the principal cutting force for WC in UEVC. The effects of the cutting speed, tool radius, elliptical vibration frequency, amplitude, hardness and fracture toughness of WC on the critical depth of cutting were analyzed with the theoretical formulae. Based on the imitation cutting scribing experiment, the influence of the cutting speed, hardness and fracture toughness of WC on the critical depth of cutting was investigated. It is understood that the critical depth of cutting in UEVC can be increased as comparing with the conventional cutting (CC) and the processing efficiency can be improved under the premise of improving the surface quality and accuracy.
- tungsten carbide /
- brittleness-ductility transition /
- critical depth of cutting /
- ultrasonic elliptical vibration cutting

HTML全文

参考文献(17)

[1]	King R F, Tabor D. The strength properties and frictional behaviour of brittle solids[J]. Proceedings of the Royal Society A:Mathematical, Physical and Engineering Sciences, 1954,223(1153):225-238
[2]	Liu K, Li X P, Rahman M. Characteristics of high speed micro-cutting of tungsten carbide[J]. Journal of Materials Processing Technology, 2003,140(1-3):352-357
[3]	Liu K, Li X P. Ductile cutting of tungsten carbide[J]. Journal of Materials Processing Technology, 2001,113(1-3):348-354
[4]	Huang S, Liu X, Chen F Z, et al. Tool wear properties of diamond-cutting ferrous metal[J]. Advanced Materials Research, 2014,1027:36-39
[5]	张玉周,皮钧.脆性材料延性域加工研究进展[J].集美大学学报(自然科学版),2013,18(1):38-47 Zhang Y Z, Pi J. Advances in the researsh on ductile regime machining of brittle materials[J]. Journal of Jimei University (Natural Science), 2013,18(1):38-47(in Chinese)
[6]	Liu K, Li X P, Rahman M, et al. CBN tool wear in ductile cutting of tungsten carbide[J]. Wear, 2003,255(7-12):1344-1351
[7]	Nath C, Rahman M, Neo K S. A study on ultrasonic elliptical vibration cutting of tungsten carbide[J]. Journal of Materials Processing Technology, 2009,209(9):4459-4464
[8]	Zhang J G, Suzuki N, Wang Y L, et al. Fundamental investigation of ultra-precision ductile machining of tungsten carbide by applying elliptical vibration cutting with single crystal diamond[J]. Journal of Materials Processing Technology, 2014,214(11):2644-2659
[9]	Suzuki N, Haritani M, Yang J, et al. Elliptical vibration cutting of tungsten alloy molds for optical glass parts[J]. CIRP Annals-Manufacturing Technology, 2007,56(1):127-130
[10]	Bifano T G, Dow T A, Scattergood R O. Ductile-regime grinding:a new technology for machining brittle materials[J]. Journal of Engineering for Industry, 1991,113(2):184-189
[11]	Nakasuji T, Kodera S, Hara S, et al. Diamond turning of brittle materials for optical component[J]. CIRP Annals-Manufacturing Technology, 1990,39(1):89-92
[12]	马春翔,王艳,社本英二,等.超声波振动金刚石刀具对脆性材料临界切削深度的影响[J].机械工程学报,2005,41(6):198-202 Ma C X, Wang Y, Shamoto E, et al. Influence of ultrasonic vibrated diamond tool on the critical depth of cut of brittle materials[J]. Chinese Journal of Mechanical Engineering, 2005,41(6):198-202(in Chinese)
[13]	陈日曜.金属切削原理[M].2版.北京:机械工业出版社,1993(请核对修改是否正确) Chen R Y. Theory of metal cutting[M]. 2nd ed. Beijing:China Machine Press, 1993(in Chinese)
[14]	郭建英.基于不同刀-屑摩擦模型的金属切削过程动力学研究[D].太原:太原理工大学,2010 Guo J Y. Study on metal cutting dynamics based on different tool-chip friction models[D]. Taiyuan:Taiyuan University of Technology, 2010(in Chinese)
[15]	Lawn B R, Evans A G, Marshall D B. Elastic/plastic indentation damage in ceramics:the median/radial crack system[J]. Journal of the American Ceramic Society, 1980,63(9-10):574-581
[16]	刘寿荣.WC-Co硬质合金硬度的磁性评估原理[J].硬质合金,2003,20(2):65-71 Liu S R. Evaluating principle for hardness of WC-Co alloy by magnetism[J]. Cemented Carbide, 2003,20(2):65-71(in Chinese)
[17]	Nath C, Rahman M, Neo K S. Machinability study of tungsten carbide using PCD tools under ultrasonic elliptical vibration cutting[J]. International Journal of Machine Tools and Manufacture, 2009,49(14):1089-1095