丰田佳美自动变速箱检测与维修(6)

附录一：英文原文

Summary modular bridge crane

With the economic development of globalization, the increasingly fierce market competition, Many of the country's manufacturing industry is facing significant challenges, manufacturers must increase the complexity of product and equipment innovation and the ability to respond quickly to market to global competition in the framework of an invincible position. In this paper, functional analysis will be based on overview of the theory of modular design method. 1 Modular Design Research

1.1 The concept of modular design Modular design is the design philosophy hope in the production sector to respond quickly to market while lowering product development costs. Shorten the design cycle of the request made. The basic idea of the modules is based on a limited variety of products, To reach users not only to meet the demand for the product's personality, but also to ensure that production and thus reduce costs. Modular is an ideological as well as product design and manufacturing technology.At present, there is not a modular definition of uniform, and many scholars according to their research, from different angles of their statements: Some people think that: a modular system design is considered the object, according to the functions of the system broken down into different uses and performance of the module, and interface standardization, choose a different module (if necessary, the design of part of a dedicated module) to the requirements of the rapid component a method of the system. Some people think that: the modular design is in a range of different functions or different functions the same as the performance of the products with different specifications based on functional analysis, and design into a series of functional modules, through the choice and combination of modules can constitute different products to meet market demand for the

design of different methods. Some people think that is a set of modules at the same time with the same combination of features and the same elements, but with different performance or use of different structural characteristics or even, but an exchange of units, modular design is based on the idea of modules, will provide product design tasks designed modular product design method. It includes two aspects: First, under the new design requirements

Functional analysis, and reasonable to create a set of modules - that is, the creation module; two design requirements are based on the existence of a group of rational combination of specific modules into a modular product program - that is, an integrated module. There are two forms of its design: First, design-based, and the other is a variant design. Based design clearly contains the above-mentioned two aspects, and the variant design contains only the second general aspects, but there is no exchange of modules, it must be included in the first dimension. The end of the 70s, the Japanese scholars modular machine is \of a certain structure standardized components to facilitate the combination and open with each other. Select the components required for assembly, can constitute a play all function machine or system. \Ministry of China machine tool design course modular design of the machine tool is defined as: the machine The same function in bed unit, designed with different uses or properties, selection of interchangeable modules to better meet the needs of a design method. That modularity is the advanced form of standardization is a tool for thinking. Is generally believed that, as of now, the concept of modularity has not yet form a unified definition of the study along with further development, it is of its nature will further deepen the understanding. 2 modular design of the study

2.1 the implementation of modular design method

Modular design to do a good job should be done in five areas of work; market research, technology forecasting, planning varieties, research first, functional analysis and modular design of the specific implementation of a number of issues requiring attention. Modular design to be followed by three levels , That is, modular product design (analysis phase); modular system design (detailed design stage); modular product design (application phase): module selection, module integrated. With the development of computer technology, more and more people began to study computer-assisted modular design.

2.2 Method of module division Modular design module is divided into the premise and foundation. Module into the reasonableness of a direct impact on the function of modular systems, performance and cost. Module integrated into the current study, the following way. (1) a systematic way. (2) considering the entire life-cycle impact of the module in the modular division. First of all, the entire life cycle to determine the impact of modular factors, the establishment of the matrix to identify modules in the matrix to determine the vector of the function of the impact of various factors, which function on the cluster vector. (3) based on the relevance of the division. Products by analyzing the composition of the components (function) between the materials, energy, information, space and other aspects of the degree of interaction to determine the division of modules. (4) technical and economic factors into the combination of modules. (5) the division of other tools for the module. 3. The modular design of the techno-economic significance Modular design of the technical and economic advantages are obvious, the theoretical analysis and practice has proved that the significance of 1. Saving design time and shorten the delivery cycle: the use of modular design methodology, enterprise product series has been a lot of common modules , upon request in the user can have a small number of modules or design and manufacture

of specialized modules can be composed of the products required by users. SCHIESS companies such as Germany, the modular design of machine tool products from order to delivery only four months in general. 2. To facilitate product replacement, the development of variant products: According to user needs, the design of new functional modules, combined into a new modular system function. With a good performance of the new technical design modules to replace the function modules, the development of the performance of good change products. 3, improve product quality, reduce production costs: carefully designed modules, batch processing, and conducive to the organization of specialized production, both to improve quality and reduce costs. Modular design method is not only reform, but also promote the technology throughout the plant, production, management and organizational structure reform. 4 to facilitate maintenance: As the product by the relatively independent modules, it becomes very easy to repair, if necessary, replace the module, without affecting production. 5 to facilitate the standardization of functional modules: the standardization of traditional class based on the basis of parts, and modular products are based on the different modules based on the level of standardization, is a trend in the standardization of the macro.

4 modular design theory in the crane industry Modular design is the crane, one of the design direction of development. In accordance with the principles of its modular design and include some basic modules, through different combinations to form different products to meet the diverse needs of users. Crane modular design based on functional analysis, the crane on the basic unit of the same functional compound unit designed for different purposes, different functions Module. Selection of different modules can be combined to form different types and specifications of the general and special cranes. Modular design of crane, the design is not

only a method of reform, at the same time will affect the entire crane industry, technology, production and management. Present. Germany, Britain, France, the United States and Japan are already well-known crane modular design techniques, and achieved remarkable results. According to information on 26], Demag, Germany (DEMAG) the design and manufacture of the company's single-girder cranes replaced by modular design, its design cost only one-piece design, 12% of the cost of production dropped to 45%> significant Improve the economic efficiency and competitiveness of their products. Nigeria beat Finland (KONE) technology company has developed a modular SM600-SM110. Series of bridge crane, and the preparation of the corresponding management software. Through the application of the software, designers can be in a very short period of time to design products to meet customer needs. At the same time, the development of the series is also greatly reduced the cost of manufacturing and after-sales service. If the company's subsidiary in Shanghai, only 30 completed the annual output of Taiwan's series of crane manufacturing tasks.

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