21. Foshan Radio and Television University. 528,02. Foshan Kangsida Engineering Technology Research and Development Center. 528000; 3. Wuhan University of Science and Technology. The modular design of the 43008 hydraulic deep drawing machine The traditional design process has not been able to meet the requirements of users who often require custom design. The way out is to introduce modern design methods. The key to improving design efficiency is product modularization and standardization. The hydraulic deep drawing machine product introduces a modular design in the design method.
Modular design principles of hydraulic deep drawing machines One team of negative design and wide custom products should consider the module segmentation criteria. Reasonable division of modules. Gradually realize the standardization and interchangeability of key module connection forms and sizes of old products in the industry, and solve the problem of modeling and structural redundancy.
The following are the criteria that are considered in modular design. The assembly product can be divided into various physical modules, which can be combined into customized products. Off-the-shelf parts. Ready-made parts themselves may be modules, thus forcing them around. The design features are maintained to ensure that these parts are indeed standard.
(3) The integrated subsystem optimizes the integration of each subsystem, which can reduce the assembly cost of the connecting part. When the maintenance service determines the product division, the subsystem that is easy to fail is required to be easily replaced and repaired from the perspective of maintenance service. Module. Components that are prone to failure can even be concentrated into an easily replaceable module. Modules with the highest frequency of repair services can be designed to be the most accessible and most easily replaceable.
Risk of failure and commissioning By placing new and untested technology in easy-to-replace modules, modular design minimizes the risk of failure. If the problem is exposed before the product goes on the market, engineering corrections can be limited to The design and manufacture of the modules. If there is a problem at the site, the same approach can be taken to achieve considerable benefits by replacing the module in question.
Availability and cost of parts If you are considering the unexpected availability of components in your design, you can add parts that may cause usability problems when they become available. This will ensure even important parts. In the event of an emergency shortage, the manufacturing process is not interrupted. Again, if the product bears the cost of these parts.
In addition to the optimized module segmentation, the modules must be designed to be as versatile as possible, thus facilitating their application in as many products as possible, even applying these modules to the number of mass customization orders, and for all The customers have created economies of scale.
The design of the block is robust so that manufacturing tolerances and machining parameters can be carefully determined. In turn, the anvil reduces the likelihood of problems in the case of a +-tolerance combination, or any form of module and its interface between modules must be standard. Design teams must avoid making improvements to a module for a project unless it is excellent. So that in view of its impact on the products that are being applied or ready to apply this module, it can still guarantee the upgrade of the universal module and the standard change.
If the variability problem between modules is likely to jeopardize the modular strategy, then the inter-module adapters can be used to coordinate between the modules.
2 Problems in the modular design of hydraulic deep drawing machine In the design process of liquid deep drawing machine, we realized that there are two processes in the implementation of modular design. The first is to realize the construction of standardized modular library. Enterprises, design paper materials that actually accumulate a large amount of people. The modularization of all design designs is a time-consuming and multi-faceted field experience. This huge system of the next step is to guide the designers to consciously modularize the design.
Modularity is a key element of custom design. In most cases, modularity is not inherent and needs to be considered when designing a product line. However, there are many difficulties in the actual implementation process. The key to the decision to implement the modular design is to solve these ten resistances. This article concludes that the obstacles to implementing modular design are not understood by engineers. Product designers don't understand the importance of part versatility, so they don't try to build on the basis of common parts. In the past, the design was too random. In the past, the design process was not due to the smashing of the oysters. The designer can't reflect on the design process, and can only guess whether the design is reasonable according to the actual use effect of the product, so a lot of empirical formula and experience value are formed.
In the overall design process, due to the customary experience of the designers and the different understanding of the problems, a large number of different empirical values ​​are used, and the design results are very unconformable. For the product-designed products of these designs, one must be standardized. The design process begins with the complete set of juice design instructions, otherwise the module optimization of the system cannot be carried out.
Because the traditional designer's knowledge theory is not systematic, there is a lack of research on the method of setting up the juice. They often do not have enough information to refine the information, resulting in design failure. In order to avoid this kind of failure, the usual countermeasure is to increase the safety factor. This kind of unoptimized timing is often hampered by the habits and conveniences of the design, which hinders modularization and standardization in the field of familiarity with the design. In terms of teamwork training and encouraging engineers to consider the whole situation rather than the local part, The modular structure is the key to the mass customization strategy. It is necessary to equip the modular design with the necessary people only.
Moreover, the team should be inconvenient to use a modular database with extensive product development experience, because it is more difficult to find a part from an inconvenient database than to design or purchase a new part, so the product designer takes it for granted. The decision to choose a part. Even if they suspect that there may be some standard parts that are needed, + willing to spend a little more time to find existing parts, the obstacle to the principle of minimum weight. The principle of minimum weight is that all parts should be sized to minimize weight and materials used. This situation hampers standardization, and material designers refuse to use standardized parts because the choice of standard parts is usually based on strength and functional requirements.
Pressure to manufacture according to contract. Sometimes a short-sighted business strategy can undermine efforts to standardize. In the downturn of the market, in order to cope with the pressure of factory under-employment. Some companies actually. Produced by contract. And seven consider the efforts to standardize product design. The use of the method of losing 91 140 may bring some extra income, but it is unfavorable from the perspective of sustainable development of the enterprise. In fact, this problem will emerge if cost management is considered in terms of general management costs and the large amount of learning costs required to quickly manufacture many new products.
Before the product begins to be designed, it may need to be repeated in order to get a better structure. After designing the standard modules, it is important for all product development teams to strictly adhere to these standards. Designers of individual products may wish to change the module. If only, for a small improvement in the product or product version, and 1 from the module. Then it will destroy the entire modularity of the rules and bring the total loss to the enterprise. If this improvement is really beneficial to all products, it should be considered in the structural design stage. If it is discovered, it should be discovered. Combine it into early steps in a loop iteration. Once decided on the modular structure. The standard of the module should be strictly adhered to in the product development activities that are being played.
Variable product management is not suitable for module management, which makes designers habitually return to the original design mode.
Because the training period of the designer in the traditional mode is too long, it is difficult to form an independent design capability in a short period of time, let alone progress. The modular design mode requires that the raw materials of the product have versatility. If the raw materials for processing can be standardized, there is no need to prepare the raw material jig or cutting tool. The hydraulic deep drawing machine uses a large number of electrical wiring of bar column plate beam and plate wire in processing. In the past, there were many raw materials purchase channels and many specifications. The important reason was that the standardization of raw materials was not considered in the design. For example, original, 4 series tons, 12 tons, 130 tons of beam structure size 1 comparison item upper beam area size upper beam thickness middle beam area size middle beam thickness lower beam area ruler, lower beam thickness above unit, 1. area size It is around the father and the left.
It can be seen that the above-mentioned beam and plate work tonnage, the size is actually close, since 1000 milk and 1300 趴 are customized at the user's request. Therefore, the idea of ​​general modularization has not been formed on the new specification. The result is that the middle beam, which is least sensitive to the thickness of the material, has a size, which increases the difficulty of raw material management, and also increases the use of the specification sheet 91 instead of Impact makes performance. If the above models are integrated, the nominal pressure of the standard of the home is 16001. User 仵 use, over the relief valve adjustment, nominal force. In this way, the thickness-sensitive lower and upper beams can be modularized in a reasonable manner.
If the village material can be standardized into several specifications of bar or one specification of pipe, the standardization of the material can simplify the corresponding processing operation instructions to only a few series, thereby reducing the possibility of error caused by taking the wrong material to lowest.
4 Conclusion Modular design is a kind of design idea and method widely used in practice to adapt products to custom design according to user requirements. The success of the actual modular design does not depend on the difficulty of the modularity itself, but on the current level of management and the understanding of the designers. And this is often the place that many theoretical research institutes ignore.
1 Pan Zhaoqing, Zhou Ji. Introduction to modern design methods. Mechanical Industry Press, 2 Deng Qixiao.戚昌滋. Modern design method for fluid hydraulic systems. China Construction Industry Press, 1985.12 3 Tang Junshe, Qin Xiansheng, Peng Yanwu's application of advanced manufacturing technology in the development of new products. Northwestern Polytechnical University, Mechanical Manufacturing, 1999
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