Advanced Materials Research Vols. 102-104

Abstract: A new radial plunger pump is given which is installed with roller between plunger and stator, the roller is purely rolling on the inner face of stator, reducing the friction force and effectively avoiding the combustion of friction pair in working orde. Its static characteristics are studied and some theoretical evidences are provided for developing new radial-plunger pumps, and it has the advangtages of high speed, high efficiency, and long lifetime. The present analysis can provide the basis for its applications.

Abstract: This paper introduced the principle of automatic terminal crimping machine. The methods to improve the speed of terminal crimping machine and to control the precision of wires cutting and crimping were discussed. OMRON servo positioning controllers were adopted in this system. By debugging the positioning controllers, the efficiency, stability and convenience of the whole system will be optimized.

Abstract: In view of the problems that we can not real-time monitor and record temperature even when the temperature exceeds a certain limit the system can not alarm, leading to deterioration of food rotting in the refrigerated transport process. So we propose and establish a real-time monitoring and recording system based on active RFID technology. The system uses active RFID technology characteristics and the communication protocol between the Reader and the host computer to monitor and record the temperature during transport. The configuration of the tag can widen the range of applications, so you can change the parameters of the tag with configurator. The tag's size is small and it has flexible applicability and strong adaptability. Test results show that the general range of temperature tag is -50～120°C between the error of ± 1°C. The rate of Reader is 100%, and the tag can launch to about 100 meters. The system does not only solve the problem of temperature during refrigerated transport, but also provides a theoretical for long-distance transmission of RFID.

Abstract: Turning operation of slender shaft poses a great challenge in machining field. It is due to the fact that the accuracy of machined workpiece depends almost completely on the operator’s skill by using conventional methods. To improve the accuracy of slender shaft with less operation skill, this paper presents an error compensation system, which includes a fuzzy PID controller. As a part of the controller, the traditional PID controller is used to control a follower rest for improving the dimensional accuracy. And the fuzzy controller incorporates skilled operators’ knowledge into an automatic machining system. At the end, turning experiments are carried out to verify the efficacy of the error compensation system. The experimental results indicate that the dimensional accuracy of slender shaft using the system is higher and more stable than that by using conventional methods.

Abstract: A novel movable monocular stereo vision measurement system was designed considering the application objectives and on-machine measurement situation. The physical model and mathematical model for measurement accuracy was established. The appropriate structure parameters scope was obtained after simulation analysis. Finally, an application example of the measurement system is introduced.

Abstract: Micro-EDM provides the potential feasibility for the nano-scale precision machining, and Micro-EDM is suitable for three-dimensional complicated structure processing. A three-dimensional model is conducted in this paper, and the key factors of a platform are analysed in detail, the positioning accuracy of the platform is tested on this basis of the model. The results of the test show that dynamic behavior and stability of this mechanism has many advantages of quick response, smooth, ultra low speed and super resolution etc. High positioning accuracy can be achieved by this platform, so it complies with the requirement of micro-EDM.

Abstract: Numerical simulation and deposited experiment of MAG welding are carried out on the conditions of Electro-Magnetic Stirring (EMS) in this paper. Based on the research of EMS welding arc action, a simple EMS-MAG welding Gaussian distribution model using whole heat flux density is established, which MAG welding arc and droplet transfer are regarded as one integrated system. The important additional magnetic field parameter in EMS-MAG surfacing deposited welding is considered in this model. The computer-aided arc measurement system is used to analyze the effects of additional magnetic field in MAG welding. Effects of excitation current on welding penetration and width are analyzed by deposited experiments. Many deposited experiments are used to adjust model parameters and verify the simulation results. By defining key parameter and optimizing the model on the basis of experimental data, it can improve the simulation accuracy effectively. The results show that the established Gaussian distribution model can be used to simulate EMS-MAG welding process.

Abstract: As the rapid development of Internet and communication technology, clothing industry in China keep updating itself and speeding up its informationization of its production process. However, since clothing industry in China is developed from handicraft industry, it has such problems as the complexity of working procedure, disparity of the manufacturing goods, and the difficulty of management. Business characteristics of the process management in the workshops of the clothing company is discussed. An application scheme for carrying out RFID in a clothing company is proposed and lastly, the future of the application and development of RFID-tech in clothing company in China is predicted.

Abstract: The uniformly accelerated motion in NC systems is analysed based on the constitution and realization of a uniformly accelerated motion, in order to implementing the uniformly accelerated motion, the corresponding means is explained, the conversion of program parameters is calculated, the rule of uniformly accelerated motion is analyzed and some factors, and the effect on the uniformly accelerated motion is illuminated.

Abstract: An improved Freeman-Newell functional reasoning model is proposed for the conceptual design of manufacturing process control strategies. The structure in Freeman-Newell model is partitioned into determined subset and undetermined subset. Main framework of the structure is expressed by determined subset. Undetermined subset is presented to express the functions required from next design level. In this way variant design and multi level design reasoning can be supported. Based on the improved Freeman-Newell model, multi level conceptual design methodology for control strategies of manufacturing process is presented. Tracking control algorithm design for a nonlinear manufacturing process plant is provided as the example to verify the design reasoning ability of the improved model.