Several factors affecting the crushing cavity design were analysed and modification was made on the design theory for the biggest tooth angle of crushing cavity . problems in the design of domestic crusher cavity were pointed out and a rational cavity shape was given . its application in several mines has achieved satisfactory results 分析了影响破碎腔设计的几个因素，对破碎腔最大啮角的设计理论提出了修正，指出国内破碎机破碎腔的问题所在，给出了合理的腔形，并在几个矿山投入使用，取得了满意的效果。
