论文部分内容阅读
螺纹标准中未规定螺距误差和牙形半角误差,而是把它们折算成中径公差的一部分,通过检验螺纹中径相应地控制它们。换言之,螺纹中径公差是螺纹中径加工允许的误差和牙形半角误差及螺距误差的综合。 1.影响被加工螺纹中径的因素
Instead of specifying the pitch error and the tooth half-angle error in the thread standard, they are converted into part of the medium-diameter tolerances and they are controlled accordingly by checking the thread diameter. In other words, the thread diameter tolerance is a combination of the allowable tolerances for thread centering and the half width angle error and pitch error. 1 factors affecting the diameter of the thread being processed