[刀具及切削工艺]典型钛合金TC17车削过程鳞刺生成规律及其抑制措施

摘要/Abstract

摘要： 为研究钛合金车削过程中鳞刺生成规律及有效抑制措施，分析了影响鳞刺生成的主要因素，采用弯矩法解析了鳞刺折断规律，进而建立了切削参数、刀具几何参数与刀尖弯矩的数学描述模型；通过MATLAB对模型进行求解，获知切削速度对刀尖弯矩的影响最小，而切削深度、进给量、刀尖圆弧以及刀具主偏角4个因素决定了刀尖弯矩的大小。为验证描述模型的正确性，进行了典型钛合金TC17外圆周断续切削实验，采集在恒定切削速度、不同切削深度、不同进给量、不同主偏角及不同刀尖圆弧条件下的鳞刺样本数据，并获得鳞刺折断规律曲线。实验结果表明：在小于临界切削深度和大于临界进给量条件下，实验结果与数学描述模型整体趋势一致，证明了数学描述模型的正确性。研究结果可为钛合金的高品质加工提供工艺技术及刀具优选方面的数据支撑。

关键词: 钛合金, 切削, 鳞刺, 硬质合金刀具, 表面粗糙度

Abstract: The scale thorn generation regularity and its inhibitory measures were researched during the turning processes of titanium alloy. The main factors of scale thorn formation were analyzed. The break law of scale thorns was analyzed by moment method. Then, a mathematical model was established among cutting parameters, tool geometric parameters with moments of tool nose. By solving through MATLAB, it is found that the cutting speed has the least influences on the moments of tool nose, and the sizes of the moments of tool nose are determined by cutting depth , feed rate, corner radius and tool cutting edge angle. In order to verify the trend of the model, the intermittent experiments of turning typical titanium alloy TC17 were carried out. The sample data of scale thorns were collected with constant cutting speed, different cutting depths, different feed rates, different corner radius and different cutting edge angles. Furthermore, the curve of scale thorn break regularity was gained. The experimental results show that, with the cutting parameters less than the critical cutting depth and larger than the critical feed rate, the experimental results are consistent with the overall trend of mathematical model, which proves the rationality of the model. This study may provide data support for high quality machining of titanium alloys in terms of technology and tool selection.

Key words: titanium alloy, cutting, scale thorn, cemented carbide tool, smoothness

中图分类号:

TG501

何耿煌, 鄢国洪, 李凌祥, 程程. [刀具及切削工艺]典型钛合金TC17车削过程鳞刺生成规律及其抑制措施[J]. 中国机械工程.

HE Genghuang, YAN Guohong, LI Lingxiang, CHENG Cheng. Scale Thorn Generation Regularity and Its Inhibitory Measures in Turning Processes of Typical Titanium Alloy TC17[J]. China Mechanical Engineering.

参考文献

[1]肖虎，李亮．TC4钛合金在低温CO2冷却下的切削性能[J]．中国机械工程，2017，28(8)：883-887.
XIAO Hu，LI Liang.High Speed Cutting of TC4 Titanium Alloy under Cryogenic CO2 Cooling Condition[J].China Mechanical Engineering，2017，28(8)：883-887.
[2]贾玉佩，赵威，李亮.航空发动机整体叶盘刀具性能灰色综合评价[J].中国机械工程，2016，27(12)：1621-1625.
JIA Yupei，ZHAO Wei，LI Liang.Grey Comprehensive Evaluation of Cutting Tool Performance for Aero-engine Blisk[J].China Mechanical Engineering，2016，27(12)：1621-1625.
[3]何耿煌，吴明阳，李凌祥，等.典型钛合金切削层相变形成机理及其影响因素研究[J].机械工程学报，2018，54(17)：133-141.
HE Genghuang，WU Mingyang，LI Lingxiang，et al.Study on the Formation Mechanism of Phase Transformation and the Influencing Factors of Cutting Layer of the Typical Titanium Alloy[J].Journal of Mechanical Engineering，2018，54(17)：133-141.
[4]张翔，潘旭东，王广林.钛合金介观尺度铣削表面粗糙度特征分析及工艺优化[J].计算机集成制造系统，2018，24(12)：2933-2940.
ZHANG Xiang，PAN Xudong，WANG Guanglin.Surface Morphology Analysis and Process Optimization in Micro-milling of Titanium Alloy[J].Computer Integrated Manufacturing Systems，2018，24(12)：2933-2940.
[5]骆彬，张开富，李原，等.钛板刚度对钻削轴向力和出口毛刺的影响[J].航空学报，2016，37(7)：2321-2330.
LUO Bin，ZHANG Kaifu，LI Yuan，et al.Influence of Stiffness on Thrust Force and Exit Burr in Drilling Titanium Plates[J].Acta Aeronautica et Astronautica Sinica，2016，37(7)：2321-2330.
[6]王贵成，陈镇宇，裴宏杰，等.车削加工毛刺形成模型及其形态转换的研究[J].中国机械工程，2005，16(5)：439-441.
WANG Guicheng，CHEN Zhenyu，PEI Hongjie，et al.Study on Forming Model and Type Change of the Feed - direction Burr in Turning [J].China Mechanical Engineering，2005，16(5)：439-441.
[7]王贵成，朱云明，张春晔.两侧方向毛刺形成的数学模型[J].兵工学报，2003，24(4)：513-515.
WANG Guicheng，ZHU Yunming，ZHANG Chunye.Mathematical Model of Two Side-direction Burr Formation [J].Acta Armamentarii，2003，24(4)：513-515.
[8]WANG Guicheng，ZHANG Chunye.Cutting-direction Burr Formation in Orthogonal Precision Cutting [J].Transactions of Nanjing University of Aeronautics & Astronautics，2001，18(2)：194-199.
[9]韩光超，潘高峰，吴文，等.超声微铣削加工毛刺成形特性研究[J].北京理工大学学报，2018，38(9)：888-898.
HAN Guangchao，PAN Gaofeng，WU Wen，et al.Research on the Burr Forming Characteristics of Ultrasonic Assisted Micro-milling Process [J].Transactions of Beijing Institute of Technology，2018，38(9)：888-898.
[10]YANG Kai，BAI Qingshun，YU Fuli，et al.Modelling and Experimental Analysis of the Mechanism of Micro-burr Formation in Micro-end-milling Process [J].Nanotechnology and Precision Engineering，2010，8(1)：75-82.
[11]孙秋莲，程祥，杨先海，等.微细铣削力对毛刺尺寸的影响规律研究[J].工具技术，2018，52(5)：42-46.
SUN Qiulian，CHENG Xiang，YANG Xianhai，et al.Influence Regularity of Micro Milling Force on Burr Size [J].Tool Engineering，2018，52(5)：42-46.
[12]张志阳，袁振剑，王贵成，等.切削参数对微铣毛刺尺寸影响的试验研究[J].工具技术，2017，51(7)：56-59.
ZHANG Zhiyang，YUAN Zhenjian，WANG Guicheng，et al.Experimental Study on Parameters Governing Burr Dimension in Micro-milling [J].Tool Engineering，2017，51(7)：56-59.
[13]袁美霞，刘少楠，唐伯雁，等.微细铣削铝合金6061表面毛刺研究[J].表面技术，2017，46(8)：268-273.
YUAN Meixia，LIU Shaonan，TANG Boyan，et al.Investigation on Burrs on Micro Milled Aluminum Alloy 6061 [J].Surface Technology，2017，46(8)：268-273.
[14]ZEL T E， OLLEAK A， THEPSONTHI T.Micro Milling of Titanium Alloy Ti-6Al-4V: 3D Finite Element Modeling for Prediction of Chip Flow and Burr Formation [J].Production Engineering，2017，11(4/5)：435-444.
[15]WYEN C F，JAEGER D， WEGENER K.Influence of Cutting Edge Radius on Surface Integrity and Burr Formation in Milling Titanium [J].The International Journal of Advanced Manufacturing Technology，2013，67(1/4)：589-599.
[16]DAVOUDINEJAD A， PARENTI P, ANNONI M.3D Finite Element Prediction of Chip Flow, Burr Formation, and Cutting Forces in Micro End-milling of Aluminum 6061-T6 [J].Frontiers of Mechanical Engineering，2017，12(2)：203-214.
[17]NIKNA S A.Modeling and Experimental Characterization of the Friction Effects on Orthogonal Milling Exit Burrs [J].The International Journal of Advanced Manufacturing Technology，2017，91(1/4)：1079-1089.
[18]VIPINDAS K， KURIACHEN B， MATHEW J.Investigations into the Effect of Process Parameters on Surface Roughness and Burr Formation during Micro End Milling of Ti-6Al-4V [J].The International Journal of Advanced Manufacturing Technology，2019，100(5/8)：1207-1222.
[19]中山一雄.金属切削加工理论[M].北京：机械工业出版社，1985：16-17.
NAKAYAMA Kazuo.Theory of Metal Cutting [M].Beijing：China Machine Press，1985：16-17.
[20]章锦华.精密切削理论与技术[M].上海：上海科学技术出版社，1986：20-13.
ZHANG Jinhua. Precision Cutting Theory and Technology[M].Shanghai：Shanghai Scientific & Technical Publishers，1986：20-13.
[21]ARTAMONOV E V， VASIL'EV D V， KIREEV V V，et al.Mechanics of Chip Formation in Cutting [J].Russian Engineering Research，2017，37(5)：450-454.
[22]CHOUDHURY I A， LAWAL S A.Burr Formation in Machining Processes [M].Amsterdam：Elsevier Inc.，2014：20-27.
[23]BIERMANN D， HEILMANN M.Burr Minimization Strategies in Machining Operations [M].Berlin：Springer Berlin Heidelberg，2010：7-15.