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Calibration of cutting force coefficients using surface errors in milling of thin-walled workpiece

Metallurgical and Mining Industry 2015年第7期7卷 159-165页

作者： Wang, Baosheng Hao, Hongyan Zuo, Jianmin Wang, Mulan Feng, Yong Hou, Junming School of Materials Engineering Nanjing Institute of Technology Nanjing Jiangsu China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Jiangsu China

Cutting force coefficients are the key factors for efficient and accurate prediction of milling force. This paper presents a new method to calibrate the cutting force coefficients using the surface errors related to milling of thin-walled workpiece including effect of cutter runout. The surface error is separated into nominal surface error and perturbation component due to runout. By analyzing forming of surface error, cutter deformation and deflection of thin-walled workpiece, the result that cutter runout has no effect on the average surface error is achieved. Relationship between nominal surface error and cutting force coefficients is constructed, and also an approach for extraction of nominal surface error from measured surface error is proposed. Then, the cutting force coefficients are estimated conveniently. Milling tests are carried out to verify the proposed method. A good agreement between predicted results and experimental results is achieved, which shows that the method is efficient.

关键词： Milling (machining)

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3-D NC testing platform based on motion control card 4

3-D NC testing platform based on motion control card

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4th International Conference on advanced Design and Manufacturing Engineering, ADME 2014

作者： Yin, Hong Mei Wang, Mu Lan Ye, Chang Huai'an College of Information Technology Huaian China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Huaian China

ISBN: (纸本)9783038352570

Researched the virtual-actual integrated technology based on the computer simulation test, 3-D NC test platform was mentioned using ′PC+Motion controller′as the core. In the VC++6.0 environment, the MFC series and the GT motion controller dynamic link library was used to realize multi axis linkage control function and 3-D NC control system software was developed. The “id = 0” vector control strategy and the SimPowerSystem module library was used to establish the system simulation of PMSM vector control model, Matlab software and InTouch software were used to realize the virtual simulation and associated debugging for control system and mechanical transmission system, the feasibility of numerical control testing platform was verified. © (2014) Trans Tech Publications, Switzerland.

关键词： controllers

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Experimental research on cutting temperature of AISI 1045 in high speed milling process

Experimental research on cutting temperature of AISI 1045 in...

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2013 3rd International Conference on advanced Materials and Engineering Materials 2013, CAMEM 2013

作者： Feng, Yong Wang, Mu Lan Wang, Bao Sheng Hou, Jun Ming School of Mechanical Engineering Nanjing Institute of Technology Nanjing China Jiangsu Key Laboratory of Advanced Numerical control technology Nanjing Institute of Technology Nanjing China

ISBN: (纸本)9783038350255

The aim of this paper is to investigate the time dependence distribution of workpiece cutting temperature in milling process. An experimental system used to achieve a measurement of cutting temperature in high speed milling is designed by use of the thermocouple and infrared thermal imager. The general regularity of temperature distribution is concluded, and the influence of the process variables such as cutting speed, cutting depth, etc. on the temperature distribution was investigated in detail. All the experiment results can be effective used to develop a new non-contact soft-sensing method for high speed cutting temperature prediction. © (2014) Trans Tech Publications, Switzerland.

关键词： Thermocouples

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The 5th International Conference on Biomedical Engineering and Biotechnology (ICBEB 2016) Abstracts

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BMC MEDICAL IMAGING 2016年第SUPPL 1期16卷 65-65页

作者： [Anonymous] Department of MRI Shandong Medical Imaging Research Institute Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China Department of Interventional Radiology Shandong Provincial Hospital Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China College of Information Science and Technology Engr. Research Center of Digitized Textile & Fashion Tech. for Ministry of Education Donghua University Shanghai 201620 China Intelligent multimedia information processing Lab College of Software Northeastern University Shenyang Liaoning Province 110004 China Institute of Biomedical and Health Engineering Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China School of Computer Science and Technology Nanjing Normal University Nanjing China Department of Electrical Engineering The City College of New York CUNY New York USA Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing Nanjing China School of Electronic Science and Engineering Nanjing University Nanjing Jiangsu 210046 China College of Engineering Nanyang Technological University Singapore 639798 Singapore School of Electronic Information Shanghai Dianji University Shanghai China School of Natural Sciences and Mathematics Shepherd University Shepherdstown WV 25443 USA Davis College of Agriculture Natural Resources and Design West Virginia University Morgantown WV 26505 USA State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 China Center of Medical Physics and Technology Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China College of Agricultural and Life Sciences University of Florida Gainesville FL 32611 USA Courant Institute of Mathematical Sciences New York University New York NY 10012 USA Translational Imaging Division & MRI Unit Columbia University and New York State Psychiatric Institute New York NY 10032 USA Guangxi Key Laboratory of Manufacturing System & Adv

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Distributed intelligent field information processing for agile manufacturing

Distributed intelligent field information processing for agi...

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2014 International Conference on Manufacturing technology and Electronics Applications, ICMTEA 2014

作者： Zhu, Wen Bin Zhu, Xiao Chun Wang, Mu Lan Ding, Wen Zheng Department of Electrical Engineering North Carolina State University Raleigh United States School of Automation Nanjing Institute of Technology NanjingJiangsu China Jiangsu Key Laboratory of Advanced Numerical Control Technology NanjingJiangsu China

ISBN: (纸本)9783038353287

The ability of acquiring and processing information in manufacturing influences agile of manufacturing system. According to the idea that networked field information processing is realized based on intelligent nodes of field-bus technology, distributed intelligent field information processing flow is researched to synthesize multiple functions such as information gathering, information processing, warning system and field control. The method of information represented and collected was put forward. The multilayer data fusion model of distributed intelligent field information processing is built. Then the distributed LonWorks fieldbus monitoring model (DLFMM) based on LonWorks fieldbus technology is established. A monitoring system of a rail vehicle automatic door factory is shown as an example to illustrate design strategy of monitoring system based on DLFMM. This monitoring system shows that the model of distributed intelligent field information processing, DLFMM and the extraction and representation of information flow discussed in this paper are reasonable and applicable. © (2014) Trans Tech Publications, Switzerland.

关键词： Data fusion

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Soft Actuator for Hand Rehabilitation

Soft Actuator for Hand Rehabilitation

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IEEE International Conference on Mechatronics and Automation

作者： Shuxiang Guo Fang Zhao Wei Wei Jian Guo Xin Zhao Weijie Zhang Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology 391 Binshui Xidao Xiqing District Tianjin 300384P.R.China Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System Tianjin University of Technology 391 Binshui Xidao Xiqing District Tianjin 300384P.R.China College of Physics Optoelectronics and Energy Soochow University 1 Shizi Street Suzhou 215006 a Jiangsu P. R. China

ISBN: (纸本)9781479970995

As we all know, rigid structure is the universal form of robots. They can be controlled accurately, but are not suitable enough for applying in rehabilitation, especially for hands. Human's hands have some complicated patterns of movement and narrow joint range of motion, so rigid accessory equipment may cause secondary injury. For the purpose of avoiding this potential risk, the idea of applying soft structure to hand rehabilitation robot is presented in this paper. The soft robot is a new research direction in the field of robot industry, especially in rehabilitation. The soft actuator we presented is made of liquid silicone and thread, and can be tied to the back of human's hands. When it is inflated or deflated, a bending and stretching motion of hands follow with the deformation of soft actuators. It works by deforming repeatedly. The soft actuator has some advantages such as portable, lightweight, low-cost, safe, low-impedance and so on. It works well by the cooperation of vacuum pump which can provide incessant air and solenoid valve which is used for reversing. In the whole system, force sensing resistor and bending sensor are used in the experiments. In order to prove that the soft actuator can work smoothly, we had a test to explore the relationship between air inflow and bending angle. The result that their relationship is close to a straight line means controlling easily and working well. Beacons of these advantages the soft robots have, a wide application prospect in rehabilitation or other fields is available.

关键词： Rehabilitation Soft Actuator Portable System

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Practical visual efficiency management system for CNC machine tools based on embedded microprocessor and cloud computing

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Information technology Journal 2013年第22期12卷 6577-6582页

作者： Mu-Lan, Wang Kai-Cheng, Fei Bo, Wang Meng-Jia, Chen Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Jiangsu 211167 China Nanjing Kangni Electromechanical Co. Ltd Nanjing Jiangsu 210013 China

The field monitoring devices were developed for Computer numerical control (CNC) machine tools based on embedded system, using STM32 series microprocessor, which can acquire the operating parameters of machine tools. The processed data were uploaded to the host computer integrated management system by Zigbee wireless communication network, making full use of the concept and architecture of cloud computing. According to the measured physical parameters of CNC manufacturing process, the corresponding mathematical models and soft-sensing algorithms can be constructed and utilized. At the same time, the actual operation situation of the manufacturing workshop and the efficiency of CNC machine tools were visual remote monitored, statistical analyzed and comprehensive managed based on LabVIEW software platform. © 2013 Asian Network for Scientific Information.

关键词： Zigbee

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Study and design of feedrate scheme in CNC interpolation

Study and design of feedrate scheme in CNC interpolation

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3rd International Conference on Materials Science and Information technology, MSIT 2013

作者： Zhu, Hao Liu, Jing Nan Yang, An Kang Wang, Mu Lan School of Automation Southeast University Nanjing Jiangsu 210096 China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing Jiangsu 211167 China

ISBN: (纸本)9783037857700

In this paper, the usual feedrate control methods are introduced. The characters of them are analyzed. The shortcomings such as the discontinuity of acceleration and jerk in these methods will influence the accuracy of CNC. In order to overcome the weaknesses, a novel feedrate scheme based on fractional power polynomial is proposed. The constraint condition is discussed. The jerk-time curves, acceleration-time curves feedrate-time curves are contrasted. The simulation result shows that this feedrate scheme can fulfill the requirements of high-speed and high-accuracy through the interpolation process. © (2013) Trans Tech Publications, Switzerland.

关键词： Interpolation

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Research on servo system for CNC machine tool driven by permanent magnet synchronous torque motor

Research on servo system for CNC machine tool driven by perm...

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2012 International Conference on Materials Engineering and Automatic control, ICMEAC 2012

作者： Wang, Mulan Xu, Kaiyun He, Chuan Zhou, Lei Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing Jiangsu 211167 China School of Automation Nanjing Institute of Technology Nanjing Jiangsu 211167 China School of Mechanical Engineering Changzhou University Changzhou Jiangsu 213016 China

ISBN: (纸本)9783037854587

Permanent Magnet Synchronous Torque Motor (PMSTM) has the main characteristics of low speed, high torque, high precision and excellent stability, which can be applied to implement the direct driving technology for CNC (Computer numerical control) machine tool. In this paper, the mathematical model of PMSTM is simply introduced, and the various control strategies are discussed in detail. According to the requirement of high performance for PMSTM driving servo system in CNC machine tool, the corresponding suitable control method is employed in the feed servo system. The proposed scheme is also promoted to apply in the spindle system, the tool holder and the turntable of machine tool. © (2012) Trans Tech Publications, Switzerland.

关键词： Servomechanisms

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Smooth trajectory planning for manipulator of cotton harvesting machinery based on quaternion and B-spline

Smooth trajectory planning for manipulator of cotton harvest...

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2012 International Symposium on Instrumentation and Measurement, Sensor Network and Automation, IMSNA 2012

作者： Wang, Mulan Li, Xiaoxia Xu, Kaiyun Jiang, Rong Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing China Department of Electrical and Mechanical Engineering Jiangsu Food Science College Huaian China School of Automation Nanjing Institute of Technology Nanjing China School of Mechanical Engineering Nanjing Institute of Technology Nanjing China

ISBN: (纸本)9781467324670

A planning method for manipulator of cotton harvesting machinery is proposed to accomplish smooth orientation adjustment in its task space. Quaternion is adopted to represent the orientation instead of the traditional homogeneous transformation matrix, and the corresponding conversion process is deduced. The smooth orientation trajectory is generated by interpolating key orientations with the quaternion three-dimensional spherical interpolation method. key joint positions are solved with the inverse kinematics algorithm according to discrete orientations sampled with specific positioning accuracy of the manipulator terminal, and then smooth joint trajectories with stable start-stop motion and continuous jerk are obtained through the interpolation method based on five degrees B-spline. Simulation results show that, the proposed trajectory planning method supplied manipulators with smooth adjustment of orientation and stable movement of joints, which made it an effective solution for the smooth orientation planning problem of manipulators in the cotton harvesting machinery. © 2012 IEEE.

关键词： Manipulators

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