SU805074A1

SU805074A1 - Torsiometer

Info

Publication number: SU805074A1
Application number: SU782623697A
Authority: SU
Inventors: Олег Владимирович Тарханов
Original assignee: Уфимский авиационный институт им.Орджоникидзе
Priority date: 1978-05-30
Filing date: 1978-05-30
Publication date: 1981-02-15

Description

Изобретение относится к измерительной технике и может быть использовано при обработке металла резанием.The invention relates to measuring technique and can be used in the processing of metal by cutting.

Известен торсиометр, содержащий корпус с закреплентши на нём чувствительными элементами и узел съема сигнала (1) .A known torsiometer comprising a housing with sensors attached to it and a signal pick-up unit (1).

Однако данное устройство характеризуется недостаточной надежностью и чувствительность» за счет недоработки конструкция.However, this device is characterized by insufficient reliability and sensitivity due to design flaws.

Цель изобретения - повышение надежности и чувствительности устройства.The purpose of the invention is to increase the reliability and sensitivity of the device.

Указанная цель достигается тем, что чувствительный элемент и узел съёма сигнала выполнены из двух кольцевых магнитопроводов с шестью обмотками на каждом из них, соединенными в две встречно включенных ’'звезды*' образующие два трехфазных моста, включенных параллельно, выходы мостов включены встречно, а магнитопровода в процессе измерений свободно охватывают контролируемый объект.This goal is achieved by the fact that the sensing element and the signal pickup unit are made of two ring magnetic circuits with six windings on each of them, connected to two on-line `` stars * '' forming two three-phase bridges connected in parallel, the outputs of the bridges are turned on the opposite, and the magnetic circuit in the process of measurement freely cover the controlled object.

На фиг. 1 изображен разрез торсиометра; на фиг. 2 - электрическая схема включения обмоток магнитопроводов торсиометра; на фиг. 3 - графики напряжений на выходе схемы: а) при работе режущего объекта без нагрузки; б) при работе режущего объекта с нагрузкой; на фиг. 4 - магнитопровод с обмотками.In FIG. 1 shows a section of a torsiometer; in FIG. 2 is an electrical circuit for connecting the windings of the magnetic circuits of a torsiometer; in FIG. 3 - voltage graphs at the output of the circuit: a) when the cutting object is running without load; b) when the cutting object is under load; in FIG. 4 - magnetic circuit with windings.

Торсиометр содержит корпус I с закреплёнными на нем чувствительными элементами и узел съёма сигнала. Чувствительные элементы и узел съёма сигнала выполнены из двух кольцевых магнитопроводов 2 и 3 с шестью обмотками 4- 9, на одном из них и шесть обмоток 10-15 на другом, соединенными в две встречно включенные **зве» ды, образующие два трехфазных мос15 та, включенных параллельно, выходы мостов включены встречно, а магнитопроводы 2 и 3 в процессе измерения ' свободно охватывают контролируемый режущий объект 16. Кроме того,.тор20 сиомвтр содержит переходную втулку, предназначенную для крепления корпуса 1 х неподвижной части станка. Торсиометр работает следующим образом.The torsiometer contains housing I with sensitive elements mounted on it and a signal pick-up unit. The sensing elements and the signal pickup unit are made of two ring magnetic circuits 2 and 3 with six windings 4–9, on one of them and six windings 10-15 on the other, connected to two on-line ** stars, forming two three-phase mos15 connected in parallel, the outputs of the bridges are turned on in the opposite direction, and the magnetic circuits 2 and 3 freely measure the controlled cutting object 16 during the measurement process. In addition, .tor20 siomvtr contains a transition sleeve designed to secure the housing 1 x the stationary part of the machine. Torsiometer works as follows.

Режущий объект 16 (например сверло) в сечении представляет собой вытянутое тело. При его вращении происходит периодическое изменение индуктивностей обмоток 4-9, Поэтому 30 на выходе обоих мостов образуется напряжение. Если сверло вращается свободно, то на выходе встречно, включенных мостов напряжение будет равно 0 . Если сверлом начать резать металл, то под нагрузкой произойдет относительный разворот, двух участков сверла, лежащих в плоскостях магниторроводов 2 и 3. В соответствии с этим, напряжение на выходе одного из мостов будет смещено на угол, пропорциональный величине нагрузки, и на , выходе встречно включенных мостов появится напряжение.The cutting object 16 (for example, a drill) in cross section is an elongated body. When it rotates, a periodic change in the inductances of the windings 4-9 occurs, therefore 30 a voltage is generated at the output of both bridges. If the drill rotates freely, then at the output of the oncoming, connected bridges, the voltage will be 0. If you start cutting metal with a drill, then under load there will be a relative turn of two sections of the drill lying in the planes of the magnetic circuits 2 and 3. In accordance with this, the voltage at the output of one of the bridges will be shifted by an angle proportional to the magnitude of the load, and it will meet the output When bridges are turned on, voltage will appear.

Основным преимуществом изобретения является повышение надежности и точности измерений.The main advantage of the invention is to increase the reliability and accuracy of measurements.

Claims

The invention relates to a measuring technique and can be used in metal cutting. The torsiometer is well known, with a casing with fixed parts and sensory elements and a signal pickup assembly. However, this device is characterized by a lack of reliability and sensitivity due to design refinement. The purpose of the invention is to improve the reliability and sensitivity of the device. This goal is achieved by the fact that the sensing element and the signal pickup unit are made of two annular magnetic cores with six windings on each of them, connected in two oppositely connected stars forming two three-phase bridges connected in parallel / outputs switched in opposite, and the magnetic field of measurements free covered sut controlled object. FIG. 1 shows a section of a torsio meter; on fng. 2 is an electrical circuit for turning on the windings of the torsion meter magnetic circuits in FIG. 3 - voltage plots at the output of the circuit a) when the cutting object is operating without load; b) during operation of the cutting object, with a load; in fig. 4 - magitoprovod with windings. The torsiometer contains a housing I with sensors attached to it and a signal pickup unit. The sensing elements and the signal pickup unit are made of two cat ayve magitol lines 2 and 3 with six windings 4–9, one of them and six windings 10–15 on the other, connected in two counter-connected lines, forming two three-phase bridges, included in parallel, the outputs of the bridges are connected in opposite directions, and the magnetic pipelines 2 and 3 in the process of measuring freedom encompass the controlled 1st "1st & 01st object 16. In addition, the tortiometer contains a transitional sleeve designed to fix the housing 1 to the fixed part of the machine, the forsiometer works after blowing way. The cutting Object 16 (for example, a drill) in cross section is an ith solid. When it rises, a periodic change in windings of windings 4–9 occurs, and Loztomu at the output of both bridges produces a voltage. If the drill rotates freely, then the output is counter; when the bridges are on, the voltage will be O. If the drill begins to cut the metal, then a relative turn will occur under the load, the two sections of the drill lying in the planes of the magnetic conductors 2 and 3. In accordance with these voltages, the output voltage of one of the bridges will be shifted by an angle proportional to the load, and the output of the on bridges in vits voltage. The main advantage of the invention is increased reliability and accuracy of measurements. Claims of invention: Torsiometer, comprising a case with sensitive sensors fixed on it: 2: 2

IS elements and a signal pickup unit, characterized in that, in order to increase reliability, the sensitive element and the signal pickup unit are made of two ring magnetic circuits with six windings on each of them connected in two oppositely. the included stars forming two three-phase bridges connected in parallel, the outputs of the bridges are switched in opposite, and the magnetic cores freely measure the controlled object during the measurement process. Sources of information taken into account in the examination 1. Ghevond and ETC. et al. Instruments for measuring and recording oscillations. Mashgiz, 1962, p. 363 (prototype).

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