分析了影响外动颚式破碎机齿板磨损的模糊因素,主要包括齿板材质、物料硬度和粒度,以及结构因素(破碎腔型、齿板运动轨迹和齿形等)。以降低齿板磨损为研究目标,将影响动颚行程特性值的主要结构因素作为设计目标,采用模糊物理规划方法对动颚行程特性值进行优化,并进行试验验证。结果表明,优化后破碎机的动颚行程特性值减小,齿板磨损有效降低,整机性能得到提高。 The fuzzy factors that affect the tooth plate wear of the external moving jaw crusher are analyzed, including the tooth plate material, material hardness and particle size, as well as the structural factors (crushing chamber type, tooth track and tooth profile). In order to reduce the tooth plate wear as the research goal, the main structural factors that affect the dynamic behavior of the jaw are taken as the design goals. The physical properties of the movable jaw are optimized by the fuzzy physical programming method, and the experimental verification is carried out. The results show that the optimized jaw crusher characteristics of moving jaw reduction, tooth plate wear effectively reduced, the whole machine performance is improved.