方牙螺纹比梯形螺纹、三角螺纹的传动效率高,是理想的传动螺纹的牙形,但其加工难度大,而测量用的环规更难加工。我厂的产品零件需要加工8×(4/2)方牙螺纹,该零件的批量大,以往因测量问题未解决,不得不采用按螺母来配制方牙螺纹,由于无互换性,生产效率低,质量也难提高。为解决此问题,我厂经多年实践,试制了8×(4/2)方牙螺纹环规(见图1),满足了生产的要求。 Square tooth thread than the trapezoidal thread, triangular thread transmission efficiency, is the ideal transmission thread tooth shape, but its processing is difficult, and the measurement of the ring gauge is more difficult to process. I plant parts need to process 8 × (4/2) square thread, the parts of the batch, in the past due to measurement problems not solved, had to use the nut to prepare the square thread, due to non-interchangeability, production efficiency Low, the quality is difficult to improve. To solve this problem, our factory after years of practice, trial production of 8 × (4/2) square tooth thread ring gauge (see Figure 1), to meet the production requirements.