用哈尔滨量具刃具厂生产的3301型螺旋线检查仪来确定斜齿圆柱齿轮的分度圆螺旋角β值,方法简便,可靠。现介绍如下。测量被测齿轮不同跨齿数的公法线长度L_K、L_(K-19)计算出法向基节P_(bn9),P_(bn)=L_K—L_(K-19)按P_(bn)值查表可得法向模数m_n及分度圆压力角α值。我们可以先用观察的方法估计分度圆螺旋角β,然后用式(1)计算出仪器导尺调整角β′。 Using 3301 spiral tester produced by Harbin Measuring and Cutting Tools Factory to determine the pitch angle β of helical cylindrical gear, the method is simple and reliable. Now introduced as follows. P_ (bn9) and P_ (bn) = L_K-L_ (K-19) are calculated according to the value of P_ (bn) by measuring the common normal length L_K, L_ The table can be obtained normal modulus m_n and indexing circle pressure angle α value. We can use the observation method to estimate the pitch circle helix angle β, and then use equation (1) to calculate the instrument guide ruler adjustment angle β ’.