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论述了榫联接结构的设计特点及要求,特别是对枞树型榫联接的设计特点及榫联接结构的失效模式和振动问题进行了详细介绍。通过算例对枞树型榫头的结构参数与应力关系进行了分析,揭示了榫联接压力角,楔形角,齿形角与剪切应力、挤压应力、弯曲应力的相互关系,可为合理选择几何尺寸提供参考。结果表明:楔形角30°适宜,压力角适当大点,齿形角45°～55°适宜。
The design features and requirements of the tenon joint structure are discussed. In particular, the design features of the tenon joint and the failure modes and vibration of the tenon joint structure are introduced in detail. The relationship between the structural parameters and the stress of the fir-tree tenon is analyzed through an example, and the relationship between the pressure angle, the wedge angle, the tooth angle, the shear stress, the compressive stress and the bending stress of the tenon joint is revealed, which can be a reasonable choice Geometric dimensions for reference. The results show that the wedge angle is suitable for 30 °, the pressure angle is suitable for larger points and the profile angle is 45 ° ~ 55 °.