【作者】 施宁平；

【导师】 姚进；

【作者基本信息】 四川大学 ， 机械设计及理论， 2001， 硕士

【摘要】 降低产品成本，提高产品市场竞争力，是当今制造业界主要的奋斗目标。而降低产品设计成本，提高产品设计水平是提高产品综合竞争力的关键所在。本文对高效超细破碎机的设计及计算机辅助设计软件系统进行了研究，实现了从破碎机的工程设计到装配图、零件图图纸输出的计算机辅助自动完成。通过本题研究取得了以下研究成果： 对破碎机进行了运动和动力学分析，结构优化改进，包括：渐开线反击板设计，后侧护板和筛板的恒力调节机构设计；分流系统的设计；筛板的设计；破碎腔的设计；转子的设计；锤头的设计。并对其进行了强度校核。 提出了高效超细破碎机CAD总体设计方案和程序流程，并探讨其CAD软件开发。将VBA Activex Automation技术引入高效超细破碎机计算机辅助设计的图形设计中。利用Activex Automation先进的技术，使图形设计工作效率大大提高，同时，由于VBA和VB程序具有众多的优点，因此进一步提高了软件系统运行效率，增强了系统功能。并完成了软件系统良好的人机交互环境的设计工作。 对反击式和锤式相结合的破碎机进行了的以效率最高为目标的优化设计。在综合考虑影响破碎机效率的各因素的情况下，提出了满足以力，能量，锤头稳定性，几何条件，不发生运动干涉，转子轴和滚动轴承的强度等约束条件，建立了包含破碎机关键参数(锤头质量M，轴心O到销轴锤头接触距离r’， 四川大学硕士学位论文锤头质心到销轴与锤头接触点的距离拙，锤头与岩石碰撞到销轴与锤头接触点的距离 S，转子的速度。2，转子绕轴心 O的转动惯量 If）的优化设计数学模型，并给出了计算实例。计算实例显示，新机型有更优的设计质量和更高的使用效率。更多还原

【Abstract】 It is the main struggling goal of manufacturing industry to reduce the product cost and to enhance the product competitiveness at market. Reducing the design cost of product and enhancing the design grade of product is the key to enhance the synthetic competitiveness of product. In this paper, the research on the design of an effective crusher fine gained and the development of its CAD software are carried out so that all procedures are automatically completed under computer guide from initialization of the crusher work parameters to output of assembling graph and part graphs of crusher. The results are obtained as follows:We analyze the features of kinematics and dynamic of the crusher. The improvement on the crusher structure design is made in the following aspects: involutes beat board, adjust mechanism on the back protect board and sieve plate, distributaries system, sieve plat, crusher space, rotor, hammer. Furthermore, strength check is carried out.The general design plan of CAD of the effective crusher fine grained and the program flows are proposed and the exploitation method of the software is presented. By introducing technique of advanced Visual Basic ActiveX Automation into graph design of the effective crusher fine grained, therefore, work efficiency of graph design is greatly enhanced. Because of many advantages of VBA and VB program, software system efficiency is more enhanced and its function is more strengthen andits man-machine interaction is very friendly.The optimum design of the beat back -impact crusher is proposed, which aims at the highest efficiency of the machine work. The optimum designed mathematics model of the main structural dimension of the crusher (M , , Xc, S , w 2 > Ir) is built with restraining conditions such as force condition, energy condition , hammer steady condition, no moving interference , strength of spin axle and bearing condition, upper limit and lower limit of the design variant condition etc. Finally, an example is give to illustrate the efficiently of the method proposed.更多还原