Patent ID: 7819018
Filing Date: 2010-10-26
Classification: G01N

Abstract:
1. A testing apparatus for testing mechanical endurance of a workpiece that has a clipping ring extending from a first end thereof and a hinge extending from a second end thereof, the testing apparatus comprising: a worktable; an installing member mounted on the worktable and configured for installing the workpiece; a clipping imitator configured for clipping the clipping ring of the workpiece; a hinging imitator configured for engaging with the hinge of the workpiece and making the workpiece tend to rotate relative to the hinge when the workpiece is installed on the installing member; a cam mounted on the worktable and capable of rotating periodically; an oscillating rod configured for following the cam, the oscillating rod comprising a first arm and a second arm extending from the first arm, wherein the second arm contacts with and follows the cam, and is capable of impelling the clipping imitator to detach from the clipping ring, the first arm is capable of pressing the workpiece toward the installing member; a pressure sensor capable of receiving pressure from the workpiece when the workpiece lying on the installing member; a first arithmometer configured for recording a count of pressure dropping that the pressure sensor detects; and a second arithmometer configured for taking count of number of turns of the cam; wherein in a rotation cycle of the cam, if the workpiece dose not breaks, the count of the first arithmometer equals to the count of the second arithmometer; if the workpiece breaks, the count of the first arithmometer is different from the count of the second arithmometer.