综合测量外螺纹通常采用螺纹环规或螺纹梳形卡规。这类测量工具虽测量方法简单,并能控制螺纹的极限尺寸、可靠地保证零件互换,但其制造复杂,且每种量规一般只能测量一种规格的螺纹,难于实现通用化,对多规格、小批量的螺纹测量极不经济。如我厂承制的圆板牙生产任务,品种规格多而批量小。过去习惯采用螺纹环规来测量板牙切削试验件,往往因缺少螺纹环规而影响板牙的制造。现利 The general measurement of external thread thread ring gauge or thread comb card rules. Although this kind of measuring tool has simple measuring method and can control the limit size of the screw thread, it can reliably ensure the interchangeability of parts. However, it is complicated to manufacture and generally only one type of screw thread can be measured for each gauge, which is difficult to be generalized. Specifications, small quantities of thread measurement is very uneconomical. If I plant the system of circular plate teeth production tasks, specifications and more small batch size. In the past used to measure the thread ring gauge die cutting test pieces, often due to the lack of thread ring gauge and affect the manufacture of die. Now Lee