SU930043A1

SU930043A1 - Device for measuring bearing moment of friction

Info

Publication number: SU930043A1
Application number: SU803221962A
Authority: SU
Inventors: Сергей Александрович Воробьев; Вячеслав Иванович Козлов
Original assignee: Второй Московский Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Часовой Завод
Priority date: 1980-12-19
Filing date: 1980-12-19
Publication date: 1982-05-23

Description

II

Изобретение относитс к подшипниковой промышленности и.может быть преимущественно использовано дл измерени момента трени подшипников качени ..The invention relates to the bearing industry and can be primarily used to measure the moment of friction of rolling bearings.

Известно устройство дл измерени момента трени подшипников, содержащее маховик с Приводом дл вращени испытуемого подшипника, последовательно соединенные блок запуска, и триггер, схему И и счетчик 1 Однако известное устройство имеет низкую точность контрол момента трени подшипников.A device for measuring the moment of friction of bearings, containing a flywheel with a drive for rotating a test bearing, is connected in series, and a trigger, circuit AND and counter 1 is known. However, the known device has low accuracy of control of the moment of friction of bearings.

Цель изобретени - повышение точности контрол момента трени подшипников .The purpose of the invention is to improve the accuracy of control of the moment of friction of bearings.

Поставленна цель достигаетс тем, что устройство, содержащее маховик с приводом дл вращени испытуемого подшипника, последовательно соединенные блок запуска и триггер, схему И и счетчик, снабжено последовательно соединенными генераторомThe goal is achieved by the fact that a device containing a flywheel with a drive for rotating a bearing under test, a start unit connected in series and a trigger, an AND circuit and a counter, are provided with a generator connected in series.

стабилизированной частоты, ключевой схемой и формирователем импульсов, выход которого соединен с первым входом схемы И, а также отметчиком времени, второй вход триггера соединен с выходом счетчика, первый выход с вторым входом ключевой схемы, а второй выход - с вторым входом схемы И и с входом отметчика времени. Привод выполнен в виде электродвига10 тел , ротором которого служит маховик , а статор соединен с выходом ключевой схемы.a stabilized frequency, a key circuit and a pulse shaper, the output of which is connected to the first input of the AND circuit, as well as a timer, the second trigger input is connected to the counter output, the first output to the second input of the key circuit, and the second output to the second input of the And circuit timer entry. The drive is made in the form of an electromotor 10 bodies, the rotor of which is the flywheel, and the stator is connected to the output of the key circuit.

На чертеже представлена блок-схема устройства.The drawing shows the block diagram of the device.

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Устройство содержит маховик 1 дл вращени испытуемого подшипника 2, последовательно соединенные блок 3 запуска и триггер t, генератор 5 стабилизированной частоты, ключевую The device contains a flywheel 1 for rotating the test bearing 2, a start unit 3 connected in series and a trigger t, a stabilized frequency generator 5, a key

Claims

20 circuit 6, pulse shaper 7, circuit 8, the counter 9 whose output is connected to the second trigger input t, and also the time marker 10. The first 3333i trigger output is connected to the second input of the key circuit 6, and the second output to the second input of the AND 7 circuit and to the input of the time marker 10. The drive is made in the form of an electric motor, the rotor of which is the flywheel, for example, in the form of a multipolar permanent magnet 1, and ctaTop 11 is connected to the output of the key circuit 6. The device operates as follows. Before starting the measurements, the trigger is in the state O. The signal from the generator 5 is stabilized for an hour. Cats through the open key circuit 6 is fed to the stator T1. When the magnetic field of the stator 11 and the magnetic field of the flywheel 1, made in the form of a multi-pole permanent magnet interacts, a torque arises, causing the bearing 2c to flywheel 1 to rotate. When the signal from the trigger unit 3 is received, trigger Flip 4 and the key The circuit B closes by disconnecting the generator 5 from the stator 11. The bearing 2 with the flywheel 1 continues to rotate on coasting. A variable voltage is induced in the stator 11, which is converted by the shaper 7 pulses into rectangular pulses, which through the AND 8 circuit arrive at the input of the counter 9 After the input of the counter 9 of a specified number of pulses, an pulse is formed at the output that converts the trigger k to its initial state the Circuit AND 8 is closed, key circuit 6 is opened, and the device is ready for a new measurement cycle. Timer 10 measures the time interval from the moment triggering trigger 4 to the time it reverses. This interval corresponds to the time during which the bearing 2 makes a given number of turns on coasting. The absence of a special clutch actuator makes the proposed device simpler and more reliable than the known devices. Apparatus for measuring the moment of friction of bearings, containing a flywheel with a drive for rotating a test bearing, serially connected starting block and trigger, circuit AND and counter, characterized in that, in order to increase the accuracy of control, it is equipped with series-connected generator of a stabilized frequency key the circuit and pulse generator, the output of which is connected to the first input of the circuit I, as well as a timer, the second input of the trigger is connected to the output of the counter, the first output a second input of gating circuit, and the second output - with an input of the second AND gate and to an input of the timer, wherein the actuator is a motor, which serves as a flywheel rotor and a stator connected to an output gating circuit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 39011, cl. G 01 L 3/00, 1973 (prototype) ..

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