国内外传统的齿轮周节误差检查的仪器有手动式万能测齿仪和比较先进的齿轮周节自动测量装置。由于效率太低,精度不高,或价格昂贵,应用的很少。我们经过分析国内外有关仪器的特点,结合本厂的实际,设计和制造了一种高效、经济、测量精度较高的SIZ-902A齿轮周节自动测量仪。该仪器 At home and abroad traditional gear error checking device has a manual universal tooth detector and more advanced gear circumference automatic measuring device. Due to the inefficiency, the accuracy is not high, or expensive, rarely used. After analyzing the characteristics of the relevant instruments both at home and abroad, we have designed and manufactured a SIZ-902A automatic measuring machine with high efficiency, economy and high measuring accuracy based on the actual situation of our factory. The instrument