Patent ID: 6237431
Filing Date: 2001-05-29
Classification: G01N

Abstract:
Apparatus for testing non-rotationally symmetrical hollow bodies for defects, at least a part of the outer contour of each of the hollow bodies being non-round in shape, comprisinga test region,a feed means for continuously conveying the hollow bodies into the test region,a means for conveying the hollow bodies through the test region, including receiving means adapted to embrace each of the hollow bodies and drive means adapted to move the receiving means over the respective hollow body to be tested which is supplied from said feed means, said receiving means having a receiving opening matched in shape to the outer contour of the hollow body to retain the hollow body in fixed relationship to the receiving means such that the hollow body is in a preselected axial orientation,a detector means at the test region for producing measurement values indicating the nature of the hollow body respectively being tested in dependence on an angle of rotation of the hollow body, the conveying means transporting the hollow body tested past the detector means,a means for rotating the receiving means with the hollow body retained therein through a predetermined angular amount during movement of the hollow body past the detector means,evaluation means for comparing the measurement values to predetermined values to determine whether the hollow body respectively being tested has defects,a means for conveying the hollow bodies out of the test region. anda means for removing the receiving means from the tested hollow body after the hollow body is moved out of the test region.