美国螺纹体系发展.ppt

The Johnson Gage Company The Johnson Gage Company The Johnson Gage Company Edmunds Gages U.S. History of Thread Gages美国螺纹量仪的发展史 苏州爱德蒙得精密测量设备有限公司 The Johnson Gage Company Thread Plug 螺纹通止塞规 Late 1800’s The Johnson Gage Company GO Ring – Solid 螺纹工作环规－整体式 Solid Working Ring Early 1900’s. The Johnson Gage Company GO Ring – Split工作环规－可调式 Patented Oct. 31, 1922 By E.J. Bryant C.G. Johnson The Johnson Gage Company Indicating Style – Tri-Roll指示规－三滚轮式 Functional Diameter Tri-Roll Late 1930’s Pratt Whitney Small Tool The Johnson Gage Company Late 1940’s Johnson Gage Co. Indicating Style – Segment指示规－两瓣式 The Johnson Gage Company Modern External Indicating Thread Inspection现代外螺纹检测量仪 Sizes as large as 1,000mm The Johnson Gage Company Bi-Internal Indicating Thread Inspection 两瓣式内螺纹检测系统 1959 – Johnson Gage Co. The Johnson Gage Company Modern Internal Indicating Thread Inspection现代内螺纹检测系统 Sizes as large as 1,000mm The Johnson Gage Company U.S. Thread Inspection Requirements美国螺纹检测规范 System 21 系统21（通止规） Provides for interchangeable assembly with functional size control at the maximum material limits within the length of standard gaging elements. 用于互换性安装的场合，控制作用中径在最大实体极限内。 The Johnson Gage Company U.S. Thread Inspection Requirements美国螺纹检测规范 System 22 / Other Thread / Category 1 Provides for interchangeable assembly with functional size control at the maximum material limits within the length of standard gaging elements.用于互换性安装的场合，控制作用中径在最大实体极限内。 Controls the minimum material size limits over the length of the full thread. 控制全螺纹段的最小实体极限尺寸。 The Johnson Gage Company U.S. Thread Inspection Requirements美国螺纹检测规范 System 23 / Safety Critical / Category 2 Provides for interchangeable assembly with functional size control at the maximum material limits within the length of standard gaging elements.用于互换性安装的场合，控制作用中径在最大实体极限内。 Controls the minimum material size limits over the length of the full thread.控制全螺纹段的最小实体极限尺寸。 AND the magnitude of the other thread characteristics such as l