METHOD FOR CONTROLLING THE PRESS FIT OF THE BEARING RINGS OF THE AXLES OF THE WHEEL PAIRS OF RAILWAY CARS Russian patent published in 2022 - IPC G01M13/45 G01M17/10 B61F15/12 

FIELD: bearings testing.

SUBSTANCE: invention relates to the testing of bearings. The method consists in excitation of natural oscillations and measurement of oscillation parameters, which are excited by a piezoelectric transducer connected to a hardware-software complex based on microprocessor technology with specialized software. Wherein the transducer is installed on the bearing ring, previously lubricated with a contact liquid to ensure acoustic contact. After that, n₁ excitations of the transducer are performed with oscillations with a period t and the number of reflected oscillations k₁ is recorded. Then the number of transducer excitations n₂ by oscillations with period t is increased and the number of reflected oscillations k₂ is recorded. The coefficient of growth of natural oscillations of the bearing ring R is determined by the formula, the minimum value of the growth coefficient of natural oscillations R_min for a defect-free ring is determined, and if R is less than R_min, the product is rejected.

EFFECT: increasing efficiency and simplifying the process of monitoring the press fit of bearing rings.

1 cl, 2 dwg, 1 tbl