Applied Mechanics and Materials Vols. 220-223

Abstract: 5-axis linkage machining has been more and more widely used, but its programming and operation is relatively complicated. Directing at the structural parameters of the blow molds of beverage bottles, this paper proposed strategies for the multi-axis machining technology. And then this paper described the development process of the dedicated post processor of a certain model’s 5-axis linkage machine tool, and the generation of NC code needed by the machine tool, which realizes the multi-axis machining of blow mold.

Abstract: As one kind of indispensable consuming resources, efficient cutting tools management plays an important role in increasing production capacity of machining workshop and ensuring the products quality. In this paper, a RFID-based cutting tools management system (CTMS) is proposed and its implementation framework is established. Furthermore, four key enabling technologies are addressed to investigate the real-time monitoring, dynamic scheduling, inventory alert and life prediction of cutting tools. Finally, a simple example is given to demonstrate the operation procedure of the established CTMS.

Abstract: As the theoretical research and practical application of the key technology and bottlenecks, Fault diagnosis technology get the focus of manufacturing field at home and abroad and have achieved some innovative research achievements[1]. This paper analyzed the failure causes of numerical control machine, linked the fault tree and fault diagnosis expert system knowledge base, develops numerical control machine fault diagnosis expert system which has a friendly man-machine interface, reasonable reasoning method and explanation function by using C programming language and object-oriented program design method.

Abstract: This research analyses on the various design elements and the evaluation of levels through the visual level of the theory of product image for the machine tools. The study captures the image elements of machine tools through the way of qualitative perception and the quantitative analysis, forming the framework of product design to extract the product image model for more direct comparison and effective research. This thesis strengthens the brand building of machine tools from the point of product image design, studies in close connection with the characteristics of the industry and products, and makes a more specific and practical significance to the design theory for the specific product design, which is useful to clear the direction of product design for the machine tools companies, and thus shaping the product-based brand and enhancing the overall national level of competition in the equipment manufacturing industry.

Abstract: In this paper, it introduces the design processing and implementation method of digital technology based on Top-down, analysis the advantages of the method using Top-down in the product design. To deflection yoke for example, completed digital design and assembly of the deflection yoke based on Top-down, and completed the NC processing by using numerical control machine tool

Abstract: In order to evaluate the assembly precision of the CNC machine tools in different assembly sequences more accurately and effectively, this paper proposes a new assembly sequence deviation model and quality evaluation approach considering characteristic parameters of glued joint. A BP neural network model is established for predicting characteristic parameters of glued joint in each assembly step. The method is able to obtain the assembly sequence with best assembly quality and improve the design tolerance of parts.

Abstract: Abstract. With the electric turret work principle, analysis the fault of the CNC lathe turret.Aimed at different fault phenomenon, the fault diagnosis method was proposed. Introducing the specific application of fault diagnosis method through specific cases, provide a theoretical reference for effective control failure and rapid troubleshooting

Abstract: CNC Milling Process for the complex characteristics, in order to solve how to quickly and effectively to provide a reasonable and optimal machining parameters of CNC milling process for technologist. The paper takes horizontal machining center DMC60H as a test platform and technological data of shell aluminum alloy hydraulic aircraft engine parts as a study. the paper establish management system of CNC milling parameters which was suitable for machinery manufacturing enterprises. The results showed that: The established parameters of CNC milling system can be better management of various CNC milling technology to effectively manage information and improve the CNC milling process information efficiency, has certain promotion effect to the production of the numerical control milling processing and the development of the manufacturing enterprises.

Abstract: Machining center is a complex mechatronical product. Because of numerous influencing factors on its reliability, parts of their inaccurate description and the uncertainty of its failure behaviors, it is very difficult to analyze its reliability by traditional reliability model which is based on probability theory. To solve this problem, grey system theory combined with GO method reliability analysis was presented, and sequentially a practical reliability analysis model considering various operating conditions of the components of machining center was established. The method was used in reliability analysis of hydraulic system of Tray Automatic Exchange Device (TAED) of machining center. Firstly, through a systematical analysis of hydraulic system of tray automatic exchange device of machining center, its basic structure model was summarized, and the model of GO chart for the hydraulic system was established. Then, the gray dynamic analysis for the hydraulic system was derived, and a feasible method of dynamic analysis for the performance reliability of hydraulic system was provided. Finally, the availability and correctness of this method in the analysis and reliability evaluation of machining center was verified by comparing the calculated result of this method with that of the traditional static GO methodology and the FTA. This approach provided a theoretical basis for the prevention of failures of the hydraulic system of tray automatic exchange device, the improvement of the system reliability and security, and the development of security controls.

Abstract: To eliminate the early failures and improve the reliability of numerical control (NC) machine tools, the comprehensive technology for these works is proposed in this paper. Firstly, model is established to describe the early failures of NC machine tools, then the formation of early failures and mechanism of early failures elimination are studied. Secondly, a comprehensive technical framework for eliminating early failures is introduced, with some detailed process and implementation. Finally, example of NC rotary table is shown to illustrate the applicability and validity of the technology for eliminating early failures of NC machine tools.