公开(公告)号：US3807225A

公开(公告)日：1974-04-30

申请号：US26367572

申请日：1972-06-16

Applicant: GAS COUNCIL

Inventor： JEPSON P ,  JOHNSON E ,  WYNDHAM A

IPC: G01B5/20 ,  G01B11/24 ,  G01N19/08

CPC classification number: G01B11/24 ,  G01B5/20

Abstract: A device for taking an impression of the orifice edge profile of an orifice plate so that the edge sharpness can be measured, comprises a support bar having clamps for rigidly fixing the bar to the orifice plate, the clamps preferably being adjustable along the length of the bar, and a rocker arm pivotally mounted between its ends on a carriage which is slidable along the bar and which can be locked in any desired position on the bar. The bar carries at one end a holder for a piece of lead foil and at its other end a micrometer head having its spindle projecting into engagement with a stop which is fixed on the carriage. A spring acting between the rocker arm and the carriage biases the spring into engagement with the stop and hence screw adjustment of the micrometer head causes the rocker arm to pivot. In use the arm is pivoted to bring the lead foil into contact with the orifice edge of the orifice plate to be tested, and further pivotal movement causes the edge the foil to a measured to a measured amount.

Abstract translation: 用于获得孔板的孔口边缘轮廓的印象以便能够测量边缘清晰度的装置包括具有用于将杆刚性地固定到孔板的夹具的支撑杆，夹具优选地可沿着 杆和摇臂，其枢转地安装在其端部之间的滑架上，滑架可沿着杆滑动并且可以锁定在杆上的任何期望位置。 该杆在一端承载一片铅箔的保持器，并且在其另一端具有千分尺，其心轴突出成与固定在托架上的止动件接合。 作用在摇臂和托架之间的弹簧偏压弹簧与止动件接合，因此千分尺的螺丝调节使摇臂枢转。 在使用中，臂被枢转以使铅箔与要测试的孔板的孔口边缘接触，并且进一步的枢转运动使得箔的边缘被测量到测量的量。