| 摘要 |
<p>The method involves emitting ultrasonic waves into a radial screw (5) i.e. thumb screw, of a blocking bolt (4) at a frequency ranging between 20 kilohertz and preferably 30 kilohertz by an ultrasonic transmitter for vibrating the screw to loosen the screw, which is placed in a base of an annular groove (3) in an axially extending drum of a rotor (1) in a tightened state. A clearance is formed between a body of the screw and a tapping of the bolt. A tightening end of the screw is coated prior to emission of the ultrasonic waves. An independent claim is also included for a tool for loosening a blocking bolt of a blade of a turboshaft engine.</p> |
