SU976324A1

SU976324A1 - Bearing radial clearence determination method

Info

Publication number: SU976324A1
Application number: SU813245144A
Authority: SU
Inventors: Вилен Иванович Кирса; Александр Семенович Киреев; Анатолий Иванович Запара
Priority date: 1981-01-29
Filing date: 1981-01-29
Publication date: 1982-11-23

Description

Изобретение относитс к подшипниковой промышленности и может быть использовано преимущественно дл определени радиального зазора подшипников .The invention relates to the bearing industry and can be used primarily to determine the radial clearance of bearings.

Известен способ определени радиального зазора подшипников, заключающийс в том, что вращают подшипник с заданной скоростью, измер ют амплитуду вибрации невращающегос кольца подшипника при этой скорости вращени и по результатам измерений рассчитывают зазор в подшипнике A known method for determining the radial clearance of bearings consists in rotating the bearing at a given speed, measuring the vibration amplitude of a non-rotating bearing ring at this speed of rotation, and calculating the clearance in the bearing from the measurement results

Однако известный способ имеет низкую точность измерени радиального зазора подшипника.However, the known method has a low accuracy measurement of the radial clearance of the bearing.

Целью изобретени вл етс повышение точности измерени радиального зазора подшипников за счет исключени погрешности пространственного распо ложени точки измерени вибрации.The aim of the invention is to improve the accuracy of measuring the radial clearance of bearings by eliminating the error of the spatial location of the vibration measurement point.

Поставленна цель достигаетс тем, что согласно способу вращают подшипник при двух различных скорост х вращени , измер ют при этих скорост х амплитуду вибрации невращающегос кольца подшипника, наход т отношение измеренных амплитуд и отношение скоростей и рассчитывают радиальный зазор по найденным отношени м.The goal is achieved by the method of rotating a bearing at two different speeds of rotation, measuring the amplitude of vibration of a non-rotating bearing ring at these speeds, finding the ratio of measured amplitudes and the ratio of speeds and calculating the radial clearance from the ratios found.

На чертеже представлена предлагаема схема устройства.The drawing shows the proposed scheme of the device.

В корпусе 1 установлено невращающеес наружное кольцо испытуемого подшипника 2, внутреннее кольцо которого смонтировано на валу 3 и вибродатчик t. На валу 3 установлена подвижна часть.5 датчика 6 частоты вращени вала 3.The housing 1 contains a non-rotating outer ring of the test bearing 2, the inner ring of which is mounted on the shaft 3 and the vibration sensor t. A movable part 5 of the sensor 6 of the frequency of rotation of the shaft 3 is mounted on the shaft 3.

Claims

The sensors C and 6 are connected to the inputs of the key device 7, the control input of which is connected to the control panel 8. The output of the key device 7 is connected to the input of the device 9 for measuring the amplitude of the signal. The controllable input of the device is connected to the control unit 8 of the control, and the outputs, to the storage devices 10 and 11, the outputs of which are connected to the inputs of the comparison unit 12, the third input of which is connected to the control panel 8. The outputs of the device 9 for measuring the amplitude of the signal and the unit 12 for comparing the yen with the inputs of the digital indicator 1 The method is carried out as follows. The minimum possible rotational speed of the shaft 3 is set. Using the switches Bearing type and Node number on the control console 8, the scale factor of the comparison unit 12 is set. The mode switch on the remote control 8 is set to Min. Gradually increasing the frequency of rotation of the shaft, bring it to the value of P- ,. In this case, the key device 7, where the signal from the sensor 6 arrives, opens the output, and the signal from the sensor k passes to the amplitude measurement device 9, then to the storage device 10. With a further increase in the shaft rotation frequency and the positions of the mode switch Maximum, the key device 7 opens at frequency n, and the signal from the sensor passes to the device 9, and then to the memory 11. When you press the button on the remote control, the Result Comparison Unit 12 calculates the radial clearance of the bearing and gives a cut ltat on the digital display 13. After the result of fixing by pressing reset button on the remote control is performed in the indicator is reset, and release of the memory devices 10 and 11. If desired may be produced by another check calculation radial clearance of the bearing is produced by the formula m. c. :: where c / is the radial clearance of the bearing; p, .P2- minimum and maximum speeds of rotation of the bearing; A, vibration amplitudes of a non-rotating bearing ring at rotational speeds n, C — proportionality coefficient; V is the coefficient depending on the type of bearing. The use of the ratio of the amplitudes Ag / A and the velocities P2 / n in the calculation formula makes it possible to exclude from consideration the error in the spatial location of the vibration measurement point. The proposed method allows to significantly improve the measurement accuracy by eliminating the error of the spatial location of the vibration measurement point. Claims The method for determining the radial clearance of bearings by measuring the vibration amplitude of its non-rotating ring during rotation of a bearing with a single speed, is different in that, in order to increase measurement weights by eliminating the error of the spatial location of the vibration measuring point, the bearing is also informed about rotation with a different speed, measuring the amplitude of vibration of a non-rotating ring, and the radial clearance is determined by the ratio of the amplitudes of vibration at two speeds x rotation and the ratio of these velocities. Sources of information taken into account in the examination 1. USSR author's certificate № 77Т473, cl. C 01 H 1/08, 1980 (prototype).