齿轮测量中心ZC蜗杆齿廓偏差测量方法

Measurement method for tooth profile deviations of ZC worm in gear measuring center

ZC蜗杆传动广泛应用于动力传动机构、精密机床等,蜗杆的各种误差会影响其传动性能,因而对其精度要求越来越高。在蜗杆各项误差中齿廓偏差对性能影响较大,需要对其进行测量及评定。基于齿轮啮合原理和空间几何变换,建立了双面圆弧砂轮磨削下的ZC1蜗杆齿廓数学模型,给出了依据GB/T 10089-2018的蜗杆齿廓偏差评定方法。在哈尔滨精达公司的齿轮测量中心上对一个模数为4 mm的ZC蜗杆试件在轴截面上进行了齿廓偏差测量,得到10次重复测量的齿廓总偏差平均值为5.3μm,其扩展不确定度为1.54μm。本文给出的ZC蜗杆齿廓偏差测量方法,可用于齿轮测量中心蜗杆或滚刀的测量中。

The ZC worm drive is widely applied in power transmission mechanism, precision machine tool and other equipments. Various errors of the worm may affect the transmission characteristics, and its accuracy is required to be higher and higher. Among all kinds of errors, the tooth profile deviations have significant influence on the worm transmission performance. To ensure the accuracy of the worm, it is necessary to measure and evaluate its profile deviations. The axial theoretical tooth profile model of ZC worm is formulated by using the gear meshing theory and space geometry transformation. Measurement and evaluation methods of worm profile deviations are given by GB/T 10089-2018. A worm with module 4 mm is measured at the gear measuring center of Harbin Jingda Company. The mean value of total profile deviation among 10 times repeated measurements is 5.3 μm, and the expended measurement uncertainty is 1.54 μm. The ZC worm measurement method meets requirements of industrial application, which provides the basis for the follow-up research of ZC worm measurement.