公开(公告)号：US4704896A

公开(公告)日：1987-11-10

申请号：US812065

申请日：1985-12-23

申请人： Norman H. Parsons

发明人： Norman H. Parsons

IPC分类号： G01B13/16 ,  G01B13/00

CPC分类号： G01B13/16 ,  Y10S33/02 ,  Y10T29/53061

摘要： An air gage assembly for testing for the presence of threads in holes in a workpiece or for the presence of the holes per se. The assembly includes a hollow housing open at one end and closed at the other end; an elongated probe assembly; means pivotally mounting the probe assembly in the housing in a location intermediate the ends of the probe assembly with one free end of the probe assembly positioned within the hollow of the housing and the other free end positioned outside of the housing; means for supplying air to the hollow of the housing; and means for passing the air centrally through the probe assembly for discharge through the other free end of the probe assembly and against the threaded or unthreaded wall of the hole to be tested. A thrust piston engages the free end of the probe assembly within the housing and a Hall effect transducer positioned in the housing adjacent the free end of the probe assembly detects both axial and wobble movement of the probe assembly indicative respectively of the lack of the hole in the workpiece or a broken or bent probe tool. A control unit associated with the probe assembly receives linear output signals from the probe assembly and analyzes these signals to provide information with respect to the presence or absence of a thread in the bore; the presence of a bore; a broken or bent probe tool; or failure of the overall system.

摘要翻译： 用于测试在工件中的孔中存在螺纹或用于存在孔本身的气量计组件。 组件包括在一端敞开并在另一端封闭的中空壳体; 细长的探针组件; 意味着将探针组件枢转地安装在壳体中的位于探针组件的端部之间的位置，探针组件的一个自由端定位在壳体的中空部内，而另一个自由端位于壳体的外部; 用于向壳体的中空部供应空气的装置; 以及用于将空气中心地通过探针组件的装置，用于通过探针组件的另一自由端并抵靠待测试孔的螺纹或无螺纹壁排出。 推力活塞接合探针组件在壳体内的自由端，并且定位在壳体中的与探头组件的自由端相邻的霍尔效应传感器检测探头组件的轴向和摆动运动，分别指示孔缺少 工件或破损或弯曲的探头工具。 与探头组件相关联的控制单元接收来自探针组件的线性输出信号，并分析这些信号以提供关于孔中螺纹的存在或不存在的信息; 孔的存在; 破损或弯曲的探针工具; 或整个系统的故障。