基于平面運動鏈的類型綜合及創(chuàng)新設(shè)計方法的研究
[Abstract]:The core of mechanism research is the innovative design of mechanism. The essence of mechanism innovation design is to produce different kinematic chains through different types synthesis and isomorphism discrimination methods, and then to construct different structural types with excellent quality and unique performance depending on some innovative design method. In recent years, great achievements have been made in kinematic chain type synthesis, isomorphism discrimination and innovative design methods. However, the limitations of most methods, such as triviality, inefficiency and impracticality, restrict the development of mechanism innovation design. Therefore, we seek a simple, efficient and practical method for type synthesis, isomorphism discrimination and innovative design. It has become a hot and difficult point in mechanism research. In this paper, the method of type synthesis, isomorphism discrimination and innovative design of planar kinematic chain is studied. The main contents and results are as follows: the general steps of synthesis of many planar kinematic chains are summarized. An organic combination of the embryo map insertion method and the basic chain construction method of the kinematic chain (known as systematic type synthesis), the complete synthesis of all single-hinged kinematic chains with degrees of freedom from-1 to 7 degrees of freedom below 8 rods, The evolutionary innovation of the type synthesis of motion chain with complex hinges is also carried out. Through some examples of isomorphic kinematic chain, the method of isomorphism discrimination based on feature array is expounded and innovated in detail, which not only satisfies the isomorphism discrimination of single hinge kinematic chain, but also applies to the isomorphism discrimination of complex hinge kinematic chain. A discriminant software of isomorphic kinematic chain based on feature array is developed, and the computerization of this method is realized. Based on the theory of mechanism regenerative kinematic chain in mechanism innovation design, an innovative design of a kind of variable sofa bed mechanism is carried out. On the basis of this, some limitations of this method are pointed out, and the bar recombination is added, and the bar is added and decreased. The evaluation of topological characteristics and the evolution of homotropic shapes are supplemented and simplified, which enriches the theory of regenerative motion chain and makes it more simple and perfect. Finally, a kind of opening and closing mechanism of glass mould is used. The improved innovative design method is verified by an example. Based on the analysis of conjugate cam weft insertion mechanism of rapier loom, the innovative design method mentioned above is applied, and several feasible schemes are put forward, one of which is kinematically analyzed, modeled and simulated. It is proved that this method has the advantages of simplicity and high efficiency.
【學(xué)位授予單位】:浙江理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH112
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