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Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO
《机械工程前沿(英文)》 2016年 第11卷 第3期 页码 289-298 doi: 10.1007/s11465-016-0393-y
Friction stir welding (FSW) process has gained attention in recent years because of its advantages over the conventional fusion welding process. These advantages include the absence of heat formation in the affected zone and the absence of large distortion, porosity, oxidation, and cracking. Experimental investigations are necessary to understand the physical behavior that causes the high tensile strength of welded joints of different metals and alloys. Existing literature indicates that tensile properties exhibit strong dependence on the rotational speed, traverse speed, and axial force of the tool that was used. Therefore, this study introduces the experimental procedure for measuring tensile properties, namely, ultimate tensile strength (UTS) and tensile elongation of the welded AA 7020 Al alloy. Experimental findings suggest that a welded part with high UTS can be achieved at a lower heat input compared with the high heat input condition. A numerical approach based on genetic programming is employed to produce the functional relationships between tensile properties and the three inputs (rotational speed, traverse speed, and axial force) of the FSW process. The formulated models were validated based on the experimental data, using the statistical metrics. The effect of the three inputs on the tensile properties was investigated using 2D and 3D analyses. A high UTS was achieved, including a rotational speed of 1050 r/min and traverse speed of 95 mm/min. The results also indicate that 8 kN axial force should be set prior to the FSW process.
关键词: tensile properties ultimate tensile strength tensile elongation friction stir welding tool rotational speed genetic programming welding speed
Development of an analytical model to estimate the churning losses in high-speed axial piston pumps
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-021-0671-1
关键词: axial piston pump rotating parts high rotational speed churning losses drag torque
Vibratory behaviors of Jeffcott system on cylindrical roller bearings
Hao WU, Jianwen WANG, Qi AN
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 305-309 doi: 10.1007/s11465-009-0036-7
关键词: roller bearing bearing-rotor system design value critical rotational speed
Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method
QUAN Yanming, HE Zhenwei, DOU Yong
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 175-179 doi: 10.1007/s11465-008-0022-5
Bending and rotational behaviour of semi-continuous composite beams
WANG Jingfeng, LI Guoqiang
《结构与土木工程前沿(英文)》 2008年 第2卷 第2期 页码 116-122 doi: 10.1007/s11709-008-0015-9
关键词: rotational effective deflection calculation semi-continuous composite full-scale semi-rigid
高建民,史晓军,许艾明,赵博选
《中国工程科学》 2013年 第15卷 第1期 页码 28-33
随着机床高速高精度的技术发展,热问题已成为影响机床特性的重要因素。从提高机床的固有热性能出发,系统介绍了机床热特性分析、热结构优化及其冷却技术的理论和方法,以及国内外研究现状,并探讨了机床“热设计”理论与技术的最新进展和未来研究重点及趋势。
Energy saving design of the machining unit of hobbing machine tool with integrated optimization
《机械工程前沿(英文)》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0694-2
关键词: energy saving design energy consumption machining unit integrated optimization machine tool
Effect of magneto rheological damper on tool vibration during hard turning
P. Sam PAUL, A. S. VARADARAJAN
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 410-416 doi: 10.1007/s11465-012-0341-4
Recently, the concept of hard turning has gained considerable attention in metal cutting as it can apparently replace the traditional process cycle of turning, heat treating, and finish grinding for assembly of hard wear resistant steel parts. The present investigation aims at developing a magneto rheological (MR) fluid damper for suppressing tool vibration and promoting better cutting performance during hard turning. The magneto rheological Fluid acts as a viscoelastic spring with non-linear vibration characteristics that are controlled by the composition of the magneto rheological fluid, the shape of the plunger and the electric parameters of the magnetizing field. Cutting experiments were conducted to arrive at a set of electrical, compositional and shape parameters that can suppress tool vibration and promote better cutting performance during turning of AISI 4340 steel of 46 HRC with minimal fluid application using hard metal insert with sculptured rake face. It was observed that the use of MR fluid damper reduces tool vibration and improves the cutting performance effectively. Also commercialization of this idea holds promise to the metal cutting industry.
关键词: tool vibration magneto rheological damper hard turning surface finish tool wear
Xiaodong JIN, Yuefa FANG, Dan ZHANG, Xueling LUO
《机械工程前沿(英文)》 2020年 第15卷 第1期 页码 66-80 doi: 10.1007/s11465-019-0570-x
关键词: parallel mechanism redundant mechanism large rotational angles machine tools 2R1T spindle head collaborative manipulator
Soft curvature sensors for measuring the rotational angles of mechanical fingers
Haixiao LIU, Li LI, Zhikang OUYANG, Wei SUN
《机械工程前沿(英文)》 2020年 第15卷 第4期 页码 610-621 doi: 10.1007/s11465-020-0596-0
关键词: soft sensor Ga-In-Sn alloy strain sensing curvature sensing mechanical finger bending
艾兴
《中国工程科学》 2000年 第2卷 第11期 页码 40-51
在机械加工领域,切削加工是应用最广泛的一种加工方法,其发展方向主要是研究髙速切削,对超硬材料加工,主要是发展磨削、超声和放电等高效复合加工技术。文章介绍对髙效切削加工和高效复合加工技术的理论研究和技术开发与应用及所取得的重要成果,主要包括高速切削基础理论、陶瓷刀具材料研究新体系和超硬材料断续磨、超声和电火花的复合加工理论与技术的研究开发。生产实际应用结果表明,高效加工技术可以大幅度提髙加工效率,改善加工表面质量,降低加工成本。
A novel six-legged walking machine tool for
Jimu LIU, Yuan TIAN, Feng GAO
《机械工程前沿(英文)》 2020年 第15卷 第3期 页码 351-364 doi: 10.1007/s11465-020-0594-2
关键词: legged robot parallel mechanism mobile machine tool in-situ machining
Green catalytic engineering: A powerful tool for sustainable development in chemical industry
Kequan Chen, Dangguo Cheng, Chong Peng, Dan Wang, Jintao Zhang
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 835-837 doi: 10.1007/s11705-018-1756-1
A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS
《农业科学与工程前沿(英文)》 页码 296-305 doi: 10.15302/J-FASE-2022479
● Summaries on sgRNAs design.
Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar
Min WANG, Jianzhong HU, Tao ZAN
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 431-437 doi: 10.1007/s11465-010-0110-1
关键词: error modeling error separation telescoping double ball bar five-axis numerical control (NC) machining tool
标题 作者 时间 类型 操作
the tensile properties of friction stir welded aluminum alloy joints based on axial force, traverse speed, and rotational speed
Biranchi PANDA,A. GARG,Zhang JIAN,Akbar HEIDARZADEH,Liang GAO
期刊论文
Development of an analytical model to estimate the churning losses in high-speed axial piston pumps
期刊论文
Vibratory behaviors of Jeffcott system on cylindrical roller bearings
Hao WU, Jianwen WANG, Qi AN
期刊论文
Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method
QUAN Yanming, HE Zhenwei, DOU Yong
期刊论文
Energy saving design of the machining unit of hobbing machine tool with integrated optimization
期刊论文
Effect of magneto rheological damper on tool vibration during hard turning
P. Sam PAUL, A. S. VARADARAJAN
期刊论文
Design and analysis of a class of redundant collaborative manipulators with 2-dimension large rotational
Xiaodong JIN, Yuefa FANG, Dan ZHANG, Xueling LUO
期刊论文
Soft curvature sensors for measuring the rotational angles of mechanical fingers
Haixiao LIU, Li LI, Zhikang OUYANG, Wei SUN
期刊论文
Green catalytic engineering: A powerful tool for sustainable development in chemical industry
Kequan Chen, Dangguo Cheng, Chong Peng, Dan Wang, Jintao Zhang
期刊论文