计量测试工具是保证生产中现场检测和产品质量的重要手段。我厂生产的30～50的大模数人字齿轮轴,需用齿厚游标卡尺,检测固定弦齿厚和分度圆弦齿厚,以控制齿轮的侧隙规范,保证齿轮精度要求。但国内现生产的齿厚游标卡尺,因检测范围小,以及存在着局限性和单一性,故尚不能适应生产需要。 Measurement test tool is to ensure that the production of on-site testing and product quality is an important means. I produced 30 to 50 large-modulus Herringbone shaft, the need to use thick caliper vernier caliper, testing fixed chord thickness and pitch chord thickness, to control gear backlash specifications, to ensure the accuracy of gear requirements. But the domestic production of tooth thickness vernier caliper, because of the detection range is small, and there are limitations and unity, it is still not able to adapt to production needs.