一、前言传动丝杠的测量参数是中径、牙形角、螺距和螺旋线。为了确保传动精度,特别应测量螺距和螺旋线。关于螺距测量过去是在万能工具显微镜及万能测长仪上进行的,用这些仪器测量虽然能 First, the preamble Transmission screw measurement parameters are diameter, tooth angle, pitch and helix. In order to ensure the transmission accuracy, especially the pitch and helix should be measured. About pitch measurement in the past is a universal tool microscope and universal length measuring instrument carried out with these instruments to measure although