The hottest product innovation design based on TRI

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Product innovative design based on TRIZ evolution theory introduction the innovative design theory and method provided by TRIZ has become an effective tool to solve technical problems in product development. Technology evolution theory is the core of TRIZ. This theory can not only predict the development of technology, but also show the possible structural state of the realization of the prediction results, and guide designers to develop new products in the right direction. This paper puts forward a unified model of product innovation design process from different perspectives, integrates TRIZ evolution theory into the production stage of product innovation solution, predicts the possible structural state of future technology, guides designers to produce innovative design schemes, and takes the reciprocating seal of hydraulic cylinder as an example

i TRIZ evolution theory

triz evolution theory is an important branch that specializes in the prediction of technological system evolution. At present, there are technological evolution theory (ET) Technology evolution guidance theory (GTE) and direct evolution theory s] [and other forms. In order to make these theories easy to operate in the actual product development, TRIZ researchers summarized and summarized the technological evolution mode and evolution route. Designers can easily produce innovative design schemes by using these evolution modes/routes.

1.1 technological evolution mode and evolution route

technological evolution mode refers to the complex evolution trend of technological systems in the development process. With the development of tirz theory, ALT has emerged successively Shulle: 10 evolutionary models, zusman's 8 evolutionary models and Darrell's 11 evolutionary models. From the perspective of product development, the first two evolutionary models are fuzzy and difficult to operate, and the latter evolutionary model considers the structure of product design and is easy to operate. This paper analyzes 11 evolutionary models of draren, that is, the system evolves towards idealization; Evolution towards increasing the dynamics of the system; Evolution towards increasing system segmentation; Evolution towards increasing spatial segmentation; Evolution towards increasing surface segmentation; Evolution towards increasing controllability; Evolution to the direction of supersystem, that is, to increase the complexity of the system first and then to reduce the complexity of the system; Evolution in the direction of increasing geometric complexity into 2017; Evolve in the direction of the shortest path of energy conversion; Evolve towards increasing the coordination of system actions; To increase the rhythm and harmony of the system

each evolutionary model has multiple evolutionary routes. For each evolutionary route, researchers have identified a general evolutionary state from left to right. For example, the dynamic evolution model of the increasing system includes the following evolution routes: rigid body single hinge multi hinge flexible body liquid or gas field; Supersystem system subsystem matter. Through a large number of patent research, it is found that the research on the evolution route of technical system can provide new concepts and new ideas for the development of new generation products

1.2 evolutionary potential of technological system

the integration of technological evolution mode/route and modern design methodology has produced a new concept of evolutionary potential [4]. The evolution potential diagram is shown in Figure 1. Each ray in the diagram represents the evolution mode related to the component or system, the periphery represents the evolution limit of the evolution mode along each evolution route, the shaded area represents the evolution of the current product along the evolution route, and the area difference between the evolution limit and the shaded area represents the evolution potential of the system. The evolutionary potential map can intuitively show the evolution of a given technology, which is different from the aerospace field, and provide a theoretical basis for designers to determine the direction of future technology development

Figure 1 evolution potential diagram of technical system

2 product innovation design based on TRIZ evolution theory

2.1 unified model of product innovation design process

there are different understandings and terms for product innovation design process. Figure 2 gives a general model of product innovation design process from different perspectives. From the traditional design process, product design is the formation process from user demand analysis to new product design and manufacturing scheme; From the perspective of conceptual design, it refers to the process of product concept identification, production, realization and development; From the perspective of innovation, the process of constantly replacing old products with new product functions, structures and processes in response to new market needs and product problems and deficiencies; From the perspective of informatization, it is to use computer software and hardware, network and database technology to carry out computer-aided product innovation. Cami, CAFI, CSAI and CAPL in the figure are computer-aided product market, structure, function and process innovation respectively

the generation of innovative concepts or innovative ideas is the link that can best reflect human creativity in product innovative design. Designers are required to use existing scientific principles and axioms in combination with specific actual conditions to find technically and economically feasible schemes. It is an effective and operable method to determine the improvement method for the defects of the product, or determine the development direction for the evolution process of the product to the ideal solution

this paper focuses on using TRIZ evolution theory as a basic tool to generate innovative ideas and realize the rapid innovation process of products. Due to the limited space, the application in other stages of innovative design will not be repeated

2.2 generation of innovative solutions

the process of applying TRIZ evolution theory to generate innovative solutions is to study the evolution process of a given technical system through the analysis of patent and product related data, and determine its position on the known applicable evolution route according to the structural state of existing products. Determine the evolution state of the given technical system that has not been implemented along each evolution route, the possible evolution stage in the future and the evolution route with poor evolution; By defining evolutionary conflict, the technological innovation potential required by a given technological system to realize the future evolutionary stage is determined. Two methods are used to generate innovative solutions: one is to determine the innovative solution by giving the possible potential state of the technical system along each evolutionary route; The second is the evolutionary potential map of the technology system, which identifies the main evolutionary state and innovation direction in the future, so as to determine the innovation solution. Figure 3 shows the process of determining the innovative solution based on the dynamic evolution route for a product, and figure 1 shows the process of determining the direction of innovative development based on the evolutionary potential map

2.3 quantification of product evolution position

fuzzy sets {0, 1, 2, 3, 4, 5} are used to measure the relative evolution position of products. Figure 4 shows the determination process of product relative to each evolution mode position. The meaning of fuzzy set is shown in Table 1

3 application example

3.1 problem description

reciprocating seal is the key technology of hydraulic cylinder, and its performance plays a decisive role in the low-speed characteristics, motion sensitivity and dynamic and static stiffness of hydraulic cylinder. In order to meet the requirements of users, hydraulic 1. The pendulum should be removed during the moving process, and the reciprocating seal needs to be improved in many aspects. Taking the reciprocating seal of hydraulic cylinder piston as an example, this paper applies the proposed innovative design method to improve the design of reciprocating seal

3.2 evolution route of hydraulic reciprocating seal

the innovation of hydraulic reciprocating seal includes the application of new sealing materials and functional materials, the cross-sectional shape design of seals, the improvement of sealing structure and the combination of seals. This paper analyzes the evolution of reciprocating seal technology from the aspects of material, structure, section shape and function, and summarizes the evolution route related to the evolution of reciprocating seal, as shown in Figure 5. Figure 5a-1 corresponds to Darrell's 11 evolutionary patterns respectively. In the figure, the circled box represents the evolutionary position of the current reciprocating seal; The dotted arrow points out that the corresponding sealing structure has exceeded 100million vehicles at present; The shaded box indicates the potential evolutionary state of hydraulic reciprocating seal, which provides the starting point for solving the problem

3.3 evolutionary potential map of hydraulic reciprocating seal

according to the evolutionary route and current evolutionary position of reciprocating seal shown in Figure 5, and according to the quantitative method of product evolutionary position proposed in this paper, the evolutionary potential map of hydraulic reciprocating seal is constructed, as shown in Figure 6. The direction of innovative design of hydraulic reciprocating seal can be determined from the areas without evolution in the figure

3.4 innovative design solution of hydraulic reciprocating seal

compare the evolution route of the existing reciprocating seal with the general evolution route of TRIZ shown in Figure 5, and draw the following conclusions according to the evolution potential diagram shown in Figure 6: ① a single sealing material is difficult to meet the requirements of sealing and wear resistance at the same time, so the diversification, compounding and application of functional materials of sealing materials are important directions for the innovation of reciprocating sealing materials. ② The breakthrough innovation of reciprocating sealing can be achieved by exploring the sealing technology of composite fields such as magnetic field, electric field, chemical field and biological field. ③ The development of sealing structure with porous and capillary along the evolution route of space division can greatly improve the lubrication performance of the seal, reduce the stick slip resistance and reduce the wear rate. ④ Geometry evolution is a relatively obvious evolutionary trend. When all available degrees of freedom are explored in the design process, the innovative design of seals will be obtained. ⑤ The development of seals with more complex cross-section shape can greatly improve the sealing performance and wear resistance, and increase the service life and reliability of seals. ⑥ The evolution of reciprocating sealing technology along the surface segmentation has been in the third stage. The development of seals with active holes can further increase the dynamics of the sealing device, so as to obtain a new reciprocating sealing structure. ⑦ To increase the controllability of sealing, sealing devices with feedback control and intelligent control should be developed. Hydraulic reciprocating seal technology has great evolutionary potential in controllability, making full use of internal resources of the system, and evolving towards idealization. ⑧ The hydraulic reciprocating seal has just evolved in terms of the coordination and rhythm harmony of the system action. Therefore, the development of sealing products in this direction will lead to the breakthrough development of hydraulic reciprocating seal

the innovative design of reciprocating seal will be obtained by the research and development of reciprocating seal according to the direction provided above. Of course, to get the innovative design solution, we must conceive the corresponding innovative design scheme according to the innovation direction. For example, it can be predicted that the next structural evolution state should be a complex cross-sectional shape along the geometric evolution direction of reciprocating seals. Figure 7 is a scheme of the innovative design of seals conceived from this. Because the elastic force of the seal is adjustable and has a stop, the sealing performance and wear resistance of the reciprocating seal can be improved

4 conclusion

traditional innovative product development requires designers to seek solutions in a large solution space. TRIZ technology evolution theory provides a structured method that enables designers to quickly obtain solutions to innovative problems. In this paper, TRIZ evolution theory is integrated with product innovation design. In the process of product concept generation, TRIZ evolution route and evolution potential are used to produce innovative solutions, so that the process of product innovation design is operable. Finally, the reciprocating seal of hydraulic cylinder is taken as an example to show the effectiveness of this method. (end)

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