bluuebunny/crossref_metadata_2025 huggingface dataset:
Research and Realization of a New Curve Grinding Method
Authors: Sui Tian Zhong , Wang Lei , Zhang Wen Bo , Sun Di
Published: October 2009

The curve NC grinding methods in presnet are analyzed. On the basis of this, a new curve NC grinding method―region contact grinding (RCG) method is proposed. With this method, the contact point between grinding wheel and workpiece can be controlled in the given contact zone. The problom of grinding wheel's distortion which is produced by contact point excessively deviating from symmetrical central plane of grinding wheel can be overcome. In order to the grinding mode, a new interpolation algorithm―region equiangular linear interpolation (RELI) is proposed. Namely, in terms of the convex-concave property of processing curve, some grinding regions are divided. In each grinding region, the grinding wheel's swing angle within each interpolation cycle is evenly distributed. Thereby, in the process of grinding a convex-concave curve, grinding wheel's contact points totally locate in the range of contact zone angle.
Study on the Kinematics of 3-TPS Hybrid Machine Tool
Authors: Meng Xiang Zhi , Li Shu Jun , Li Ming
Published: October 2009

A 3-TPS(RRR) hybrid machine tool that could process vertically as well as horizontally was designed in Northeastern University. A parallel locking mechanism, equipped between the moving platform and the fixed base, is used to constrain partial degrees of freedom (DOF) of the platform. It leads that the platform has three translational DOF and a rotate DOF. The kinematic analysis was discussed in this paper. Several important issues were addressed, namely, position, velocity, acceleration, Jacobian matrix. A simulation was also carried out, which lay the base on structural design and dynamic analysis.
Application of 3D Optical Measuring System in Auto Shock Absorber’s Quality Inspection
Authors: Yue Li , Liu Xian Yong , Yan Mao , Duan Kang Rong
Published: October 2009

Auto shock absorbers, with helical surfaces together with multiple punching procedures needed in manufacturing processes, make the measurement and inspection difficult. TieNiu 3DOMS is adopted to acquire their surface data, the digital point cloud data of one single vision within 10s, automatically registering complete point cloud by rotary platform, so that the efficiency of process inspection and final quality control of the work pieces of complicated surfaces are improved. Experiments show that the surface inspection precision is better than 0.05mm, and one single surface inspection within minutes.
Experimental Study and Simulation of Cutting Forces during the Deep Sawing of Granite
Authors: Li Yuan , Xu Xi Peng
Published: October 2009

An experimental setup was established to measure and study the vertical and horizontal force components acted on the saw-blade during the whole deep sawing process of a granite workpiece with finite length. The accumulated thickness of the grits engaging with the workpiece in the sawing zone was obtained by numeric method to simulate the vertical and horizontal cutting forces respectively. The results showed that the simulated data tallied well with the measured data.
A Study on Dynamic Process Quality Control Method into Supply Chain
Authors: Jiang Xing Yu , Wang Shi Jie , Ren Yan Mei , Wang Wan Shan
Published: October 2009

To cope with the challenges of monitoring dynamic and variable quality variation into supply chain, diagnosing the abnormal variation at the right moment, is a difficult problem that a enterprise in supply chain faces in process quality control. A dynamic process quality control method, which integrated quality prevention, analysis and diagnosis, was all put forward. This method integrated several enabling technologies such as the theory of similarity manufacturing, Statistical Process Control (SPC), neural network. Furthermore, some key enabling technologies were studied in detail, including process quality analysis on-line based on similarity process and process quality diagnosis based on Elman. It is basis of realizing network, intelligent and automatic process quality control.
Design of Step Motor Fuzzy Control System and its Application
Authors: Kong Xiao Hong , Zhang Bao Jian , Zhang Xue Ming , Li Guo Hou
Published: October 2009

The classical PID controller is based on the concrete model of the object and is only suitable for the design of linear control system. Step servo system is a typical nonlinear system, so the intelligent control strategies should be adopted. In this paper an approximate model of the step motor is presented, a compound fuzzy PI controller is designed to fulfill the control of the step motor, and is successfully applied to the automatic control the scanning device of eddy current nondestructive testing (ECNDT). The proposed controller is robust to load torques, cogging forces, and other disturbances. The fuzzy PI controller also guarantees asymptotic stabilization and possesses better dynamic performance compared with the traditional PID control algorithm. The simulation study and an experimental validation carried out on the automatic control system of the scanning device confirmed the suitability of the proposed approach.
Research on the Lean Six Sigma Supplier Surveillance Process Management
Authors: Wang Ying Chun , Liu Yong Xian , Jiang Xing Yu
Published: October 2009

In the modern production and management of the supply chain, the supplier management(SM) becomes one important researching field. The paper tried to utilize the thinking and methodology of Lean Six Sigma to solve the supplier managing problems. Lean Six Sigma is a new advanced production technique management instrument which integrates Lean production and Six Sigma. It focuses on the subtle production and the strategic management simultaneously. It not only pays close attention to the speed and time of manufacture, but also follows with interest in the fluctuation in process. Lean six sigma supplier surveillance process management includes system, process and product audit. In this paper an example about payment and delivery is used to prove this way is very practically and effectively.
Application of Compound PID Control in the DC Servo Motor
Authors: Song Xiao Yan , Yang Qing Jie , Zhang Xue Ming , Feng Qi Gao
Published: October 2009

Although the traditional PID controller is widely used in many fields, the system parameters varying and external disturbances existing in the DC servo system will cause large overshoot or poor stability. To improve the performance of the PID controller, a compound servo control system combining the conventional PID control and the fuzzy control is presented to meet the demand of a vehicular antenna servo system in this paper. Incorporating the fuzzy control and the conventional PID control, this paper presents a design method of the fuzzy PID controller that is based on the fuzzy tuning rules and formed by integrating two above control ideas. Simulation results are presented to show the efficiency of the proposed controller. The practical control effect shows that the control system that adopts the fuzzy PID controller has better performance than that of the traditional PID control system, and meets the performance requirements of the servo system.
Research on Vibration and Instability of the Double-Span Beam Base on Transfer Matrix
Authors: Liu Ting , Feng Fei , Chen Ya Zhe , Wen Bang Chun
Published: October 2009

The vibration and instability of a beam which is Double-span Euler Beam with axial force is studied by transfer matrix method. The transfer matrix of transverse free vibration and axial compression of the beam is derived. Then based on the assembled transferring matrix, the effect of the position of intermediate support on the natural frequencies and Euler critical axial force of the beam is discussed, which offered a useful method to start research of vibration of complicated framework.
Application of the Back Propagation Neural Network Model on the Supplier Evaluation in E-Manufacturing Environment
Authors: Chen Jian , Wu Ming Hong , Oraifige Ilias
Published: October 2009

The supplier evaluation is a key section of the intelligent internet supplier selection & evaluation system. The model used for supplier evaluation is Back Propagation Neural Network model which is introduced in the paper. The paper started with the brief introduction of the intelligent internet supplier selection & evaluation system. It provides a outline of the research project and then it concentrated to introduce the application of the BP NN model for supplier evaluation. The application introduced in the paper will include the design of the BP NN model, Training of the BP NN model and test results.
Car Seat Backrest Static Strength Experiment and Simulation
Authors: Xu Zhi Wei , Sheng Zhong Qi , Zhang Hong Hong , Liu Yong Xian
Published: October 2009

According to the characteristics of car seat structure and the distribution of car seat load, the finite element static strength model of the car seat is constructed in this paper. The model contains shell elements and beam elements. Some seat structure elements such as welding connection, screw connection, pin connection are simplified in the model. Simulation analysis of the static characteristics of car seat backrest frame model is carried out. At the same time, the experimental research on the static strength characteristics of the back seat is made by the measurements of non-electric physical quantities. By comparing and analyzing the results of experiment and computer simulation of seat static strength, the practicability and credibility of the seat static finite element analysis model and simplified model constructed in this paper are verified. It also proves that the simulation of various connecting forms of the seat structure is effective and is a reliable method in the structural design of the car seat. The model and simulation of the car seat can reduce the cost and shorten the design period.
Multi-Agent Approach for E-Commerce Negotiation
Authors: Su Peng Cheng , Wang Gui He , Yang Jian Yu , Wang Wan Shan
Published: October 2009

In a dynamic environment of e-commerce, different business entities expect to interact with each other and have their transaction time include its cost minimized. In this paper, the concept of agent and multi-agent, as well as their structure, were introduced. At the same time, the negotiation protocol, negotiation strategies and the negotiation mechanism were also researched for e-commerce negotiation. The agent technology was exploited, based on which, the negotiation system was developed. This platform would improve negotiation efficiency by saving time and cost for e-commerce.
An Engine Dynamic Signal Testing System Based on Virtual Instrument Technology
Authors: Liu Ying Ji , Cai Feng Tian , Zhou Wei , Zhang Xue Li , Zhang Tian Xia
Published: October 2009

Aimed at the requirements of engine experimental research，a test system of engine dynamic signal was developed based on virtual instrument technology. The integral structure design of the system was given, the hardware is composed of sensors, signal conditioning module, high-speed data acquisition card and portable computer; the host computer software was developed with DASYLab, a virtual instrumentation tool. Its essential is to make good use of computer to achieve and extend functions of traditional instruments, by comprehensively using technologies of computer, digital signal processing, standard bus and software engineering method, functions of continuous multi channel sampling and multi type signal acquisition, and processing analysis were realized. The field test shows the system works reliably, development and application of this system can provide detailed experiment data and a new way in the field of engine power detection.
The Collaborative Design and Manufacture of Injection Molds Based on the CSCW
Authors: Ge Zheng Hao , Yuan Qing Kai , Jiang Meng , Tang Xiao Yun
Published: October 2009

Cooperative work environment supported by computer (CSCW) is a platform for sharing information, which supports the exchange of design ideas of different teams. The collaborative design and manufacture of injection molds based on the CSCW can shorten the life cycle of mold development, improve the mold quality and lower the development cost. This paper describes the framework of collaborative design and manufacture for injection molds, discusses the construction of the organizational model and analyzes the workflow of design and manufacture.
Dimension Parameter Transfer Method Based on Constraint Satisfaction Priority in Variant Design
Authors: Shao Wei Ping , Hao Yong Ping , Wang Yang , Liu Yong Xian
Published: October 2009

In order to accommodate the increasing variety of costumers’ demands, manufacturers tend to produce different models of the same product by introducing variant design concepts that improve the flexibility of design systems. In this paper, an approach based on constraint satisfaction priority is proposed to solve the dimension parameter transferring problem. Firstly, product variant parameters and variant relations are analyzed. Secondly, dimension constraint relation network model is conceived and parameters constraint forms is discussed. Finally, a parameters transfer method based on constraint satisfaction priority is established.
Process Interoperability Framework Based on PSL for Collaborative Product Design
Authors: Zeng Peng Fei , Hao Yong Ping , Shao Wei Ping , Liu Yong Xian
Published: October 2009

Process interoperability is important to achieve collaborative product design across enterprise boundaries. In this paper, first analyzes interoperability requirements in collaborative design process. Then the Process Specification Language (PSL) is introduced to design process modeling and PSL description method of design process information is given. In the end, a process interoperability framework is established based on PSL ontology and main function of modules are discussed. The framework provides an effective solution for information exchange and sharing among different process management systems in collaborative product design.
Research of Workflow Modeling System for Business Process Management
Authors: Hao Yong Ping , Shao Wei Ping , He Li Lun
Published: October 2009

Establish an environment-independent process flow definition for Business Process Management that can realize the common flow chart conversion with the help of flow engine. It adopts a browser-based client-side development mode to realize friendly flow user interface, and has the role-based task allocation mode and the user’s allocation-based task allocation mode, which can implement the system with the datasheet-based flow monitoring and the graphics-based flow monitoring.
Research and Application on Vibrating Style Drier with Conduction and Heat Transfer
Authors: Jiang Jing , Zhu Tong , Xie Yuan Hua , Han Jin , Wang Lei
Published: October 2009

Vibrating style drier with conduction and heat transfer is a novel drying equipment combining drying technology with heat transfer technology. It has the properties of high efficiency, energy saving, environmental protection and fast speed, which overcomes the weakness of large energy consumption of drying equipment and uneven drying of sulfurization bed. It can greatly increase the quality and yield of products, improve the working environment, and increase remarkably economic benefit and energy saving effect. In this paper, the structure characteristics, the working principle, and also the application of vibrating style drier with conduction and heat transfer were introduced. Its dynamic characteristics were analyzed, which was of great significance to the application and popularization of this kind of drier.
Study on Speed Control System of Fluid-Driven In-Pipe Robot
Authors: Li Jian Yong , Su Xiao Bo , Jiang Lai , Li Rong Li , Gao Xing Hua , Wang Yao
Published: October 2009

The fluid-driven in-pipe robot is developed. Speed control system was model analyzed and the relationship between the load that affect the speed stability and through-flow area was derived, and the speed control system including double closed-loop feedback part was built.
Technology for Locating System of the Laying Pipe Manipulator
Authors: Wang Dan , Liu Hong Yi , Li Bin
Published: October 2009

The laying pipe manipulator is used to lay concrete pipe, and it solves the question of safety, quality, and efficiency in the pipe laying construction site, and the critical question of locating system is studied. The work principle and mathematical model of locating system were established, and the experiment of locating system was done. According to the test result, the work principle and mathematical model of locating system had turned out to be well adapted for requirement. The locating system of laying pipe manipulator can be applied to product development. The mathematical model of locating system supplies the basic control theory for the manipulator to lay and joint concrete pipe automatically.
Numerical Analysis on Starved Elastohydrodynamic Lubrication Characteristics of Spiral Bevel Gears
Authors: Yan Yu Tao , Sun Zhi Li , Yang Qiang , Wang Yan Zhong
Published: October 2009

The spiral bevel gears of attack helicopter transmission systems are taken as an object in this paper. The numerical analysis model for starved elastohydrodynamic lubrication (SEHL) of spiral bevel gears is established on the basis of the analysis of load tooth contacts analysis and SEHL in elliptical contacts. The SEHL characteristics of spiral bevel gears are also analyzed. The results are as follows: during the course of a gear-tooth meshing cycle of the spiral bevel gear, the extremum of minimal film thickness and maximal film pressure occurs near midpoint of the path of contact, and leans to dedendum. The minimal value of the minimal film thickness is 0.39 um, and the maximal value of the maximal film pressure is 0.69 GPa. The value of minimal film thickness gradually increases with the increasing of meshing point velocity. When the velocity of meshing point exceeds 110 m/s, the increase became tardiness. As the load of meshing point increases, the value of minimal film thickness gently diminishes.
Vibration Analysis of Aeroengine Compressor Blade-Disc Coupling System
Authors: Zhao Wei Qiang , Liu Yong Xian , Lu Mo Wu
Published: October 2009

This paper introduces the FEA method for cyclic symmetric structures and makes an vibration characteristics analysis to a certain aeroengine compressor blade-disc coupling system based on this method. According to the anslysis results the dynamic characteristics of the blade-disc coupling system are discussed. The analysis method and results in this paper can be used for further study on optimal design and vibration safety verification for the blade-disc coupling system.
The Application of Reverse Engineering in the Design of Electric Vehicle Panel
Authors: Li Feng , Feng Lan Fang , Wu Xiao Qing , Hui Yan Bo
Published: October 2009

Reverse engineering is a new modern product design technology, which is suitable for designing complex curve and surface, has been becoming a practical and widely-available engineering tool in panel design of automotive, motorcycle and electric vehicle. This paper first expatiates on the basic theory of structured light measurement system, registration algorithm of multi-view point cloud data and the basic principle of curve and surface reverse design, and then gives an application example in the 3D design of electric vehicle front panel.
Effects of Lubricant Properties on Lubricating Performance of Tripod Sliding Universal Joints under Thermal Condition
Authors: Chang De Gong , Wang Xue Feng , Yang Fu Qin , Wang Jiang Zhong
Published: October 2009

The effects of the lubricant properties on the lubricating performance of the tripod sliding universal joint were studied under thermal condition by numerical method. The obtained results show that increasing lubricant viscosity increases the film thickness whereas increasing viscosity-pressure coefficient or viscosity-temperature coefficient is just the reverse. The pressure hardly depends on the viscosity-pressure coefficient or viscosity-temperature coefficient, and a larger lubricant viscosity induces only a remarkable second pressure peak. Increasing lubricant viscosity or viscosity-pressure coefficient increases the temperature whereas the increasing viscosity-temperature coefficient reduces it.
Motorcycle Dynamics Modeling and Simulation Based on Road Simulation
Authors: Zou Xi Hong , Shi Xiao Hui , Shi Quan , Xiao Shun Li
Published: October 2009

Based on the stimulation and restriction of road simulation, the 5-DOF motorcycle multi-body dynamic model is derived, and the differential equation of motion and state-space formulation are developed according to Lagrange Equation. By iterating the load spectra, which was sampled on Hainan Proving Ground, the driving signal of motorcycle road simulation is obtained. With the driving signal as input, the motorcycle dynamics is simulated using MATLAB program, then the simulation and experiment are compared. The result shows that motorcycle dynamics can be analyzed and estimated precisely by combining road simulation with computer simulation.
The Modeling and Simulation for Numerical Control Lathe’s Feed System Based on MATLAB
Authors: Chen Geng Shun , Tong Rui Hong , Qiang Bao Gang
Published: October 2009

In order to enhance the processing precision of the numerical control lathe, affected the processing precision to the numerical control lathe to feed system in the primary factor to conduct the analysis research. Rested on the mechanical kinetics principle to establish the engine bed to feed transmission system mathematical model, has constructed the lathe to feed system simulation model using MATLAB in software dynamic simulation tool Simulink, and obtained the reflection system performance simulation curve. Has analyzed gap, dead area and so on non-linear using the simulation model and the simulation curve the factors to the system processing precision influence and gave enhanced the transmission system performance the effective action. The analysis research result indicated that, carries on the dynamic simulation in Simulink, may revise the parameter repeatedly, very quick can obtain the best design variable. For the mechanical drive system design, the parameter choice as well as the performance improvement has provided the good method and the effective way.
Reliability Sensitivity Analysis of Sliding Bearing Based on Virtual Simulation Technology
Authors: Sun Zhi Li , Chen Peng Fei , Zhang Feng He , Huang Ya Dan
Published: October 2009

As a non-linear finite element analysis software ANSYS/LS-DYNA is used to carry out virtual reliability test in transmission mechanism of reciprocating compressor and response surface method is used to analyze reliability and sensitivity of sliding bearing according to testing data. This paper uses ANSYS to preprocess testing models of virtual prototype and put out the K file; designs sample points of random variables based on central composite method and modifies the K files to carry out random sampling of prototype and uses LS-DYNA970 to solve the submitted K files repeatedly; plots relationship curves of output responses and time history and gets a group of sample points of structure response with post-processing results of LS-PREPOST. Lastly this paper uses response surface method to build limit state equation and analyze reliability and sensitivity of sliding bearing, and provides theoretical basis for design of bearing.
On the Flatness Uncertainty Estimation Based on Data Elimination
Authors: Huang Mei Fa , Wang Qiao Yi , Zhong Yan Ru , Kuang Bing , Li Xiang Qian
Published: October 2009

Coordinate measuring machine (CMM) plays a more and more important role in the flatness evaluation. The pre-processing for eliminating error data is an important process to improve the quality of flatness evaluation. So, flatness uncertainty estimation becomes a key problem. To solve the problem, a flatness uncertainty estimation method based on data elimination is presented. Firstly, a method for excluding the error data based on statistical theory is expatiated with the consideration of probability theory and mathematical statistics. Secondly, details of calculating flatness uncertainty based on least-square method are analyzed. Then the measured 3-dimensional data are processed so as to put the excluding method into use. So the error data can be deleted and the flatness uncertainty can be decreased and can achieve a good evaluation quality. Finally, an example is given and the result shows that the method proposed in this paper is feasible.
The Method of Analyzing the Reliability of Tooth Surface Contact Strength Based on Finite Element Method and Weibull Distribution
Authors: Shi Yan Yan , Sun Zhi Li , Li Guo Quan , Mu Feng
Published: October 2009

In this paper, a method of analyzing the reliability of tooth surface contact strength was presented and several kinds of errors of tooth shape were taken into consideration. In the method, experimental design method and Finite Element Method (FEM) were used to get the samples of tooth surface contact stress, and then Weibull distribution was used to fit these samples. On the basis of both stress and strength obeying to Weibull distribution, the reliability of tooth surface contact strength was calculated. The result of the calculation example indicates that the method is correct and effective.
Modeling and Optimizing for Flexibility in Business Processes
Authors: Huang Hai Xin , Xue Shi Tong , Wang Ding Wei
Published: October 2009

Business process flexibility (BPF) is critical for enterprises in improving their competition abilities. In this paper, the business process flexible degree is introduced firstly. Then, the BPF is divided into three tiers, and each flexible degree is described. At last, an optimization model for business process flexibility is built for a process design.
Cold Extrusion Forming of Copper/Aluminum Clad Composite
Authors: Luo Jun Ting , Xu Yan , Zhao Shuang Jing
Published: October 2009

The cold extrusion forming of copper/aluminum clad composite based on the low pressure casting billet is presented in this paper. The technology was studied by using the experimental investigation and the finite element method. The drop-in phenomenon occurred in aluminum during the extrusion forming process. The product will be having good quality when the extrusion ratio is 5.45 and the extrusion modular angle is 30°. The crack appeared on the head of product when the extrusion ratio and extrusion angle is large than the aforementioned values.
Theoretical Modeling and Experimental Verification of Surface Roughness in Abrasive Jet Finishing
Authors: Li Chang He , Liu Zhan Rui , Cai Guang Qi
Published: October 2009

Based on the modeling and experiments concerning the surface roughness in abrasive jet finishing with grinding wheel as restraint, the effect of abrasive size, abrasive fluid concentration, machining cycle, wheel velocity and carrier fluid on machined surface quality was investigated. Surface grinder M7120 was employed in a jet machining experiment conducted with W18Cr4V and 40Cr materials, profilometer TALYSURF was used to measure the micro geometrical parameters after machining, and SEM was used to observe surface micro-morphology. Experimental results show that with W7 Al2O3 powder at the mass fraction of 10% and antirust lubricating liquid being adopted in jet machining for 20 to 30 cycles, not only high surface shape precision can be kept or obtained, but also defect-free machined surface with the roughness of Ra0.15～1.6µm can be obtained with high efficiency. Experimental observation and experimental results proved that the experimental results agree well with a mechanism-based machining model.
Effect of Non-Uniform Temperature Field on Piece Rolled by Three-Roll Cross Wedge Rolling
Authors: Qiu Ping , Xiao Hong , Li Ming
Published: October 2009

Defects of pieces rolled by cross wedge rolling (CWR) have great effect on its practical applications. With reference to the center-pressure method used often in the forging, the effects of non-uniform temperature field on defects were studied by using the three-roll CWR tests under different cooling conditions and the coupled thermo-mechanical finite element models. The porous can be reduced or even eliminated when the billets were rolled with a controlled non-uniform temperature filed. The optimal temperature gradient was determined by FEM, which can be used in practical applications.
Research on Capacity Balancing Model in Iron & Steel Enterprise
Authors: Liu Xiao Bing , Wang Hong Liang
Published: October 2009

Considering Iron & Steel Enterprise production operation situation, a multi-level mathematic model of capacity balancing and corresponding capacity balancing algorithm was proposed. The application of capacity balancing was discoursed on through making production capacity balancing in the branch factory level; production process level and machine level. And buffer pools were established to provide the possibility of capacity adjustment between various levels. With this method the difficulty of capacity calculation is solved, and provide a valid method for rapid establishment of production schedule.
Modeling and Calculation of Dynamic Performances of NC Machine Tool Considering Linear Rolling Guideway
Authors: Zhang Yao Man , Xie Zhi Kun , Liu Yong Xian
Published: October 2009

The linear rolling guideway is one of the most essential parts of the machine tool. So it is very important to analyze the dynamic-static characteristic of the machine tool consider rolling guideway and to study the effect on machinery function. The paper’s research is based on a NC machine tool produced by a certain plant of machine tools. Methods of simulating the rolling guideway support are studied, and the configuration of the spring damper elements of the bearing supports are also studied, and the finite element analysis on the CKS6125 machine tool has been made to confirm its dynamic characteristics. Then the finite element analysis models are validated by some experiments.
Research on Influence of Process Parameters on Sheet Metal Extrusion Force
Authors: Xiang Hua , Zhuang Xin Cun , Zhao Zhen
Published: October 2009

Extrusion force plays a significant role on sheet metal extrusion process. It is characterized by various process parameters including material properties, extrusion ratio, friction, tool shape etc. In this paper, a reasonable FEM model of sheet metal extrusion process was established and validated by comparing the results of simulation and experiment firstly. Based on the reliable model, the effect on extrusion force of various process parameters was investigated with orthogonal experimental design combined FEM simulation. The work presented in this paper has laid certain foundation for further work of modeling and optimizing extrusion force.
Neural Networks Control of the MH/Ni Power Battery Positive Mill
Authors: Ma G.J. , Gong Ya Dong , Cai Guang Qi
Published: October 2009

The purpose of MH/Ni power battery positive mill is to make it have the certain density, thickness and good tenacities. The thickness of positive battery is different, its capacity, the efficiency of charge and discharge, the utilization efficiency of the electrode material is also different. Positive battery has variable delay and variable gain in the mill process, so it is suitable for using neural networks to control.
Process Optimization of Large Turbine Blade Casting Base on Numerical Simulation
Authors: Gai Deng Yu , Chu Yu Zhao , Li Qing Fen , Li Qun Xia
Published: October 2009

3-D velocity and temperature fields of mold filling and solidification processes of large turbine blade casting were simulated. It indicated that the velocity field of upright casting is faster and steadier than lying casting. The deformation was predicted and the rule of deformation was reflected by analyzing stress field during solidification of upright casting. The casting processes were optimized, and then applied to produce castings.
Wear Mechanism and Preventive Measure of Electrode in Micro-EDM
Authors: Wu Meng Hua , Wang Yuan Gang , Zhao Fu Ling
Published: October 2009

Wear course was experimental analyzed and mechanism of electrode wear was discussed based on finite element analysis and electromagnetic theory. Cu–TiN nano composite electrode was prepared on Cu electrode by electro deposition and effects of the electrode on discharging were studied. It is shown that electric field distortion and skin effect are two of the basic reasons on electrode wear. Cu–TiN nano composite electrode is one of the the effective ways for uniform wear of electrode in EDM.
The Optimal Structure Design of Mold in Powder Injection Molding Based on the Numerical Simulation
Authors: Zheng Zhen Xing , Xia Wei , Wu Yuan Biao
Published: October 2009

The quality of the green and the shaping efficiency are affected by the mold structure during the course of powder injection molding (PIM). Based on the numerical simulation, the mathematic model for the optimal design of the gating and runner system in PIM mould is constructed. The method is testified by the Moldflow software and the experiment. From the result, it is suggested that the clamp force and the shape cycle are clearly decreased, the green is densified and the samples’ density error of the green is decreased after the optimal design of the mold structure. Furthermore, the number of trial mold is reduced and the shape efficiency is improved.
Experimental Study on the Belt Grinding Mechanism for Aluminum Alloys
Authors: Yuan Suo Xian , Bi Bo
Published: October 2009

As a new technique integrating grinding and polishing, the technology of abrasive belt grinding is considered as a processing method with high quality, high efficiency, low consumption and wide range of application owing to its features of high processing efficiency, “cold” grinding, stable grinding speed, high precision and low costs. Taking aluminum alloy material as object of study and on the basis of the grinding technology of surface abrasive belt grinding machine, this paper carried out in-depth experimental study on the grinding mechanism of abrasive belt with aluminum alloy materials.
System of Networked Technical Service Oriented Product Lifecycle
Authors: Yu Tian Biao , Zhou Jing , Ding Jun Mei , Wang Wan Shan
Published: October 2009

In order to improve quality and efficiency of technical service, a new mode of technical service is presented, which is networked technical services oriented product lifecycle. Definition of the networked technical services is put forward, feature of the networked technical services is analyzed and function of the networked technical services system is introduced. Base on these works a prototype system of the networked technical service is developed. Results of the system running prove correctness of theory and feasibility of technology.
The Determination and Simulation of Boom's Reasonable Derricking Acceleration
Authors: Lin Gui Yu , Li Wei Liang , Li Kui Xian
Published: October 2009

Derricking device of flexible transmission is widely applied in crawler cranes, while its derricking speed hasn't been studied very well. In this paper, the kinematics model of derricking device is firstly established. Next, the dynamic analysis is done. A succinct method based on the load's prescriptive swing angle is put forward. The reasonable speed and acceleration of derricking device are determined according to the method. The adopted values provide a reliable basis for design and analysis. The study puts a way for the following work. All in all, it is innovative.
Service-Oriented Manufacturing Execution Systems Supported by IPSS
Authors: Fu Ying Bin , Jiang Ping Yu
Published: October 2009

Manufacturing execution systems (MESs) are important information systems in workshop-level. Nowadays, industrial product service systems (iPSSs) are used to decrease the cost by providing professional services for the usages and management of machine tools and their attachments like cutters in manufacturing. This paper studies framework of a workshop-level service-oriented manufacturing execution systems (So-MES) which is supported by industrial product service systems. The framework of the So-MES is built through enabling four basic functions: planning functions, execution functions, service functions and resource functions. Finally, methods for the resource of e-service and product management service are discussed as key enabling techniques in this paper.
Research of Micro-Stereolithography System with Dynamic Pattern Generator
Authors: Xu Guang Shen , Ma Xun Ming , Pan Huan , Hu Song Qiao
Published: October 2009

In order to fabricate micro/meso structures, a novel micro-stereolithography (SL) system with dynamic pattern generator using digital micro-mirror device (DMD) has been investigated. The micro-stereolithography system solidifies photo-sensitive resin with image mask generated by dynamic pattern generator. The micro-stereolithography system is made up of dynamic pattern generator, recoating system and control system. The dynamic pattern generator consists of parabolic concentrator, UV lamp, collimating lens, shutter, DMD and its control, lens and computer. UV light intensity distribution in the imaging plane is investigated. Uniformity UV light intensity distribution is obtained in the imaging plane with changing small area’s gray-scale, and the difference between maximum and minimum value of UV light intensity is 0.4µW/cm2. Small size parts with intricate microstructures have been fabricated with the novel SL system. Compared with laser scanning SL system, the advantage of the novel micro-SL system is that the new SL system can build small objects having micro-structures with low cost in shorter time. The novel micro-SL system provides a solution to the problem that has hampered the progress of SL process into high resolution with low cost.
Static Balance Method for a Special Gyroscope Rotor with a Spherical Cavity
Authors: Cui Da Peng , Yao Ying Xue , Qin Dong Li
Published: October 2009

Balance precision of gyroscope rotor influences its performance directly. Aiming at the special gyroscope with a spherical cavity mentioned in this paper, a static balance method is proposed. This method can determine not only radial direction but also axial direction relative position between the mass center of rotor and the centroid of rotor’s outer outline. Combined with outer outline location, which can determine the relative position and direction between the mass center of rotor and the centroid of rotor’s outer outline, the relative position and direction between the centroid of spherical cavity and the centroid of outer outline can be determined, and we will know the position of removal amount.
Research on Knowledge Base System for Semantic SOA
Authors: Cong Kai , Zhang Lin , Si Nan , Zhang Hui
Published: October 2009

To handle semantic heterogeneity, enhance semantic interoperability and achieve automatic understanding and managing of services in the SOA integrated systems, semantic support was required and the SOA should be extended to the semantic SOA (SSOA). For complex product advanced manufacturing systems, a knowledge base (KB) was built by analyzing and abstracting multidisciplinary knowledge of complex product fields. Based on the KB, a knowledge base system (KBS) architecture was proposed to provide semantic support for information sharing and exchanging at the knowledge level.
Performance Analysis of Spindle System of NC Machine Tools
Authors: Sheng Zhong Qi , Xu Zhi Wei , Xie Hua Long , Li Jing Ye
Published: October 2009

The performance of spindle system of machine tools directly affects the characters of machine tools. The static and dynamic stiffness of spindle system is one of the main factors that affect the machining precision of machine tools and the performance analysis of spindle system occupies an important position in the design of machine tools. Based on ANSYS, this paper analyzed static stiffness, vibration characters and harmonic response of spindle system of SSCK63-400-typed CNC lathe. Selecting improving the characters and saving the cost of spindle as optimization object and using APDL of ANSYS, the optimization of the spindle is completed by the optimization tools of ANSYS. This research provided the basis for statics and dynamics design of spindle system, shortened the design period and improved the design efficiency.
Research on Product Shared Information Semantic Model in Digital Design
Authors: Zhang Hui , Song Xiao , Zhang Lin
Published: October 2009

In order to support knowledge representation and utilization, a framework of a “product shared information semantic model” is proposed. A method to describe the knowledge of a product is presented according to the framework, including a structure description in OWL and a behavior representation in OWL-S. And a description example about a warhead is given. It shows that the application of OWL and OWL-S can significantly benefit knowledge sharing and reuse in the process of digital design.
Modeling of Nutation Drive with Rolling Teeth
Authors: Wang Guang Xin , Guan Tian Min
Published: October 2009

According to the pair transformation theory on mechanism derivation, the internal bevel gear meshing pair of nutation drive is replaced by rolling elements. In this manner, gear teeth are eliminated and the problem of manufacturing the interval bevel gear is solved completely. The method to generate new tooth profiles of nutation drive is put forward. Using this method, a novel nutation drive is presented. This system is made with a minimum number of parts, and can remain constant transmission ratio. In this paper, the problems such as tooth profile synthesis and kinematic analysis of the mechanism are studied. The formulae for calculating transmission ratio of the reducer are developed and theoretical profile equations of the stator and the rotor are obtained.
Experimental Study on Micro-End Lapping Mechanism
Authors: Yuan Suo Xian , Hao Yun Xia
Published: October 2009

In recent years, the demands on product performance are improving, particularly in the aviation; electronics, precision instruments and other fields, the accuracy and quality have become the most important. So lapping is getting increasingly importance with its high precision, good processing quality. In this paper, the processing parameters, which have effect on processing accuracy and efficiency in the process of planar lapping, have been analyzed emphatically. The effects on surface roughness of various processing parameters have also been investigated.
Robot Surfacing System for Flexible Remanufacturing Based on Off-Line Programming
Authors: Zhu Sheng , Shen Can Duo , Li Chao
Published: October 2009

A flexible remanufacturing system based on arc weld robot is established which consists of three subsystems: 3D laser measuring subsystem, modeling subsystem and off-line programming subsystem. The whole remanufacturing procedure consists of a several steps, such as work piece measuring, locating, modeling, welding program generating and surface depositing. The surfacing program consists of automatic delamination, automatic weld bead planning and welding parameter generation. The system can be easily employed to an automatic remanufacturing of work piece of various state of surface damage. Test remanufacture are carried on damaged plate, damaged column and worn axletree, and the results show the system is feasible.
Research on Modeling and Reasoning Framework of Ontology-Based Equipment Selection and Matching Expert System in Fully Mechanized Caving Face
Authors: Zeng Qing Liang , Liu Zhi Hai , Wan Li Rong , Zhao Yong Hua
Published: October 2009

In this paper, ontology modeling language and reasoning engines are studied and applied, framework model of ontology-based expert system is built up, the model tree of classes and instances of fully mechanized caving used equipments is brought forward, OWL-based equipment knowledge base is created by using protégé tool, knowledge rules of mining equipments selection and matching are analyzed, and SWRL-based selection and matching rules are designed. Finally, the rule conversion and reasoning is realized in JESS environment.
Development of a Digital Mockup for Tunnel Boring Machine
Authors: Cheng Jun , Gong Ya Dong , Xu Ying Qiang , Zhi Di
Published: October 2009

Technology of digital mockup is introduced and the application background and practical requirement of tunnel boring machine has been discussed in this paper. One type of EPB tunnel boring machine’s digital mockup is built. The kinematics simulation of working station is disigned base on it. And finite element analysis of some critical componants are operated in CATIA.
A Human-Centered Virtual Assembly System
Authors: Chen Peng , Xia Ping Jun , Lang Yue Dong , Yao Ying Xue
Published: October 2009

Virtual manufacturing technology has become an effective method for decision and planning in manufacturing. Due to ergonomics problems are widely concerned in assembly design planning, a human-centered virtual assembly system framework is proposed for ergonomics analysis for assembly operation in this paper. The six-layer framework integrates virtual human modeling, motion capture and recognition, ergonomics evaluation and virtual assembly process planning as an organic whole. Data exchanging and system function are discussed based on this framework. The work in virtual reality (VR) technology, motion capture technology, ergonomics method and optimization method for implementing the system is also described. The framework would provide a new approach for the combination of virtual manufacturing and ergonomics analysis in the future.
Calculation Method of Mechanical Structure Complex Time-Dependent Reliability with Blind Number Theory and its Implementation
Authors: Guo Peng Yan , Shi Bo Qiang , Xiao Cheng Yong , Deng Yong Sheng
Published: October 2009

The basic ideas of expressing uncertain variables with blind number were introduced. The mechanical structure time-dependent characteristics variation in stochastic process was deduced. A time-dependent reliability calculation model was built with blind number theory. The numerical method based on blind number was applied to solve this complicated computing model. A LabVIEW program was compiled, and a frame beam’s time-dependent reliability was computed. The result shows the method based on blind number is very convenient and effective in solving the complicated reliability calculation model. In this method, the structure time-dependent reliability can be predicted quickly based on the historical data.
Research on New Numerical Calculation Method for Reliability of Mechanical Strength Based on Blind Number Theory
Authors: Xiao Cheng Yong , Deng Yong Sheng , Guo Peng Yan , Shi Bo Qiang
Published: October 2009

The uncertainty variable in mechanical design is expressed in blind number and the relation among variables is expressed in the operation rule of blind number; By combining the reliability design theory with blind number calculating method, the reliability of the mechanical elements with arbitrary distribution parameters and discrete test data is discussed; and a numerical method for mechanical reliability based on blind numbers is presented. Besides, the typical examples show that the method is reasonable and effective.
A New Modeling Method for Mechanical Friction Based on Data Mining
Authors: Wang Yong Fu , Cao Hua Long , Zhang Yi Min , Wen Bang Chun
Published: October 2009

Modeling of friction force has been a challenging task in mechanical engineering. Traditional way, such as mathematical modeling approaches, was found quite difficult to achieve satisfactory performances due to some immanent nonlinearity and uncertainties in systems. This paper aims to develop fuzzy modeling techniques to characterize the friction dynamics. The proposed fuzzy modeling approach has two folds, that is, extraction of fuzzy rules using data mining techniques; setup of static model based on the fuzzy rules. The results obtained demonstrate
that our proposed method in this paper has good potential in many mechanical systems with unknown nonlinear friction.