SU108641A1 - Instrument for the study of friction in the threads and on the ends of nuts - Google Patents

Instrument for the study of friction in the threads and on the ends of nuts

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Publication number
SU108641A1
SU108641A1 SU550235A SU550235A SU108641A1 SU 108641 A1 SU108641 A1 SU 108641A1 SU 550235 A SU550235 A SU 550235A SU 550235 A SU550235 A SU 550235A SU 108641 A1 SU108641 A1 SU 108641A1
Authority
SU
USSR - Soviet Union
Prior art keywords
friction
threads
nuts
study
nut
Prior art date
Application number
SU550235A
Other languages
Russian (ru)
Inventor
Х.Н. Дементьев
Original Assignee
Х.Н. Дементьев
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Х.Н. Дементьев filed Critical Х.Н. Дементьев
Priority to SU550235A priority Critical patent/SU108641A1/en
Application granted granted Critical
Publication of SU108641A1 publication Critical patent/SU108641A1/en

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  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Description

Известные приборы дл  исследовани  трени  в резьбах и на торцах гаек посредством динамометрического гаечного ключа дл  измерени  крут щего момента нри завертывании гаек не обеспечивают требуемой точности измерений и имеют сложную конструкцию.The known instruments for studying friction in the threads and on the ends of the nuts by means of a torque wrench for measuring the torque when wrapping the nuts do not provide the required measurement accuracy and have a complex structure.

В предлагаемом приборе этот недостаток устранен тем, что прибор выполнен в виде двух, снабженных испытуемой резьбой и ст гиваемых гайкой, стержней, один из которых находитс  под действием пружины, поджимаемой шайбой, св занной с регистрирующим приспособлением и взаимодействующей с торцом испытуемой гайки.In the proposed device, this disadvantage is eliminated by the fact that the device is made in the form of two rods equipped with a test thread and a nut, rods, one of which is under the action of a spring pressed by a washer associated with the recording device and interacting with the end of the test nut.

На фиг. 1 изображен вид прибора сбоку; на фиг. 2-часть того же прибора в разрезе по АА на фиг. 1.FIG. 1 shows a side view of the device; in fig. 2-part of the same device in section along AA in FIG. one.

Прибор монтирован на основании / (фиг. 1) и имеет силовую раму 2, состо щую из нижней и верхней плиты и двух грузовых стоек. На верхней плите установлена пружина 3, свободный конец которой упираетс  в щайбу, служащую опорой дл  головки болта или гайки.The device is mounted on the base / (Fig. 1) and has a power frame 2, consisting of the lower and upper plates and two cargo racks. A spring 3 is installed on the upper plate, the free end of which rests on a shchita that serves as a support for the head of a bolt or nut.

Испытание трени  в резьбах производ т по принципу ст жки. Дл  этого концы нарезных стержней 4 и 5, имеющих правую и левую нарезку , соедин ют посредством ст жной гайки 6. При поворотах гайки концы стерл ней сход тс , пружина 3 сжимаетс  и в стержн х возбуждаетс  осевое усилие, фиксируемое на градуированном циферблате 7, рабоча  стрелка которого приводитс  в движение посредством рейки 8, св занной с силовой пружиной .The test of friction in the threads is made according to the principle of tightening. For this, the ends of the threaded rods 4 and 5, having the right and left cutting, are connected by means of a tension nut 6. When the nut rotates, the ends of the sterile are converging, the spring 3 is compressed and an axial force is generated in the rods, which is fixed on the graduated dial 7, working the arrow of which is set in motion by means of a lath 8 connected to the force spring.

При исследовании трени  в резьбах на ст жную гайку 6 надевают ключ 9 (фиг. 2), а на свободный конец ключа укрепл ют динамометр 10. С помощью ключа без динамометра создаетс  некоторое подт гивание гайки до определенной посто нной величины нагрузки. Затем к ключу присоедин ют динамометр 10 и определ ют момент на ключе при этой посто нной величине нагрузки; далее подобные опыты повтор ют до предельной нагрузки.In the study of friction in the threads, a key 9 (Fig. 2) is put on the clamping nut 6, and a dynamometer 10 is fastened to the free end of the key. With the key without a dynamometer, some tightening of the nut is created to a certain constant load value. Then, a dynamometer 10 is attached to the key and the moment on the key is determined at this constant load value; then similar experiments are repeated until the maximum load.

При исследовании трени  на торце гайки ключ перенос т на гайку и, опирающуюс  на щайбу. Определение моментов на ключе и сн тие осевых усилий производ т так же, как и дл  исследовани  трени  в резьбах.In the study of friction at the end of the nut, the key is transferred to the nut and resting on the tongue. The determination of key moments and the removal of axial forces are carried out in the same way as for the study of friction in the threads.

Сближение концов нарезных стержней 4 и 5 осуществл етс  в пределах от 30 до 50 мм, что обеснечивает получение более достоверных коэффициентов трени , а отсутствие каких-либо передач в силовом устройстве прибора обеспечивает повышенную точность и надежность в работе.The convergence of the ends of the threaded rods 4 and 5 is carried out in the range from 30 to 50 mm, which provides for obtaining more reliable friction coefficients, and the absence of any gears in the power device of the device provides increased accuracy and reliability in operation.

Предмет изобретени Subject invention

Прибор дл  исследовани  трени  в резьбах и на торцах гаек с применением динамометрического гаечного ключа дл  измерени  крут щего момента при завертывании гаек , отличающийс  тем, что, с целью упрощени  конетрукции и увеличени  точности измерений, он выполнен в виде двух снабженных испытуемой резьбой и ст гиваемых гайкой стержней, один из которых находитс  под действием пружины, поджимаемой щайбой, св занной с регистрирующим действующие на стержень осевые усили  приспособлением и взаимодействующей с торцом испытуемой гайки.A device for studying friction in the threads and on the ends of the nuts using a torque wrench to measure the torque when turning the nuts, characterized in that, in order to simplify the design and increase the accuracy of measurements, it is made in the form of two supplied with the test thread and nut to be pulled the rods, one of which is under the action of a spring, pressed by a puck associated with an axial force acting on the rod and registering with the end face of the test nut.

SU550235A 1956-02-13 1956-02-13 Instrument for the study of friction in the threads and on the ends of nuts SU108641A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU550235A SU108641A1 (en) 1956-02-13 1956-02-13 Instrument for the study of friction in the threads and on the ends of nuts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU550235A SU108641A1 (en) 1956-02-13 1956-02-13 Instrument for the study of friction in the threads and on the ends of nuts

Publications (1)

Publication Number Publication Date
SU108641A1 true SU108641A1 (en) 1956-11-30

Family

ID=48381738

Family Applications (1)

Application Number Title Priority Date Filing Date
SU550235A SU108641A1 (en) 1956-02-13 1956-02-13 Instrument for the study of friction in the threads and on the ends of nuts

Country Status (1)

Country Link
SU (1) SU108641A1 (en)

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