一、滚刀测量齿轮滚刀的齿距一般应在齿轮滚刀检查仪或在万能工具显微镜上进行测量。大型工具显微镜由于没有分度装置,缺乏定位依据,使得测量误差高达0.030～0.050毫米,不符合齿轮滚刀齿距和三齿距累积误差的要求。为了提高测量精度,我们采用了如图1的定位装置,以齿前面容屑沟导程定位来测 First, hob measurement gear Hob pitch should generally be gear hob tester or universal tool microscope measurements. Due to lack of indexing device and lack of positioning, the large tool microscope can make the measurement error up to 0.030 ~ 0.050 mm, which does not meet the requirements of gear hob pitch and cumulative error of three pitches. In order to improve the measurement accuracy, we use the positioning device as shown in Fig. 1