Device for non-destructive testing of inner surfaces of cylindrical holes

摘要

The device refers to non-destructive testing of products. The device is designed to control all types of discontinuities of the internal surfaces of OC with a cylindrical inner surface, or OC with an internal thread. The closest analogue of the device is the Eddy-current transducer for flaw detection of blind holes and pipes (Inventor's certificate SU 555332 A1). The main difference between the proposed device and its analogue is that the trajectory of the eddy-current transducer is set using a thread, as an ordered helical line, in which the angle of rotation of the part along the thread is rigidly connected with the translational movement of this part along the thread. It is easy to convert the movement of a part along a thread into movement of a measuring tool. The translational and rotational movements rigidly coordinated with each other unambiguously connect the linear and angular coordinates of the sensor, which is important for determining the exact coordinate of the defect on the internal, visually invisible for the flaw detector operator, surface of the OC.