ЛАБ РАБ №1текст
.pdfАНАЛИЗ РАБОТЫ ПОДШИПНИКОВ КАЧЕНИЯ
Цель работы:__________________________________________________________________________
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1. Устройство стенда
Рис.1 Схема испытательного стенда Обозначение позиций на рис.1:
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Измерительная аппаратура:
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ДМ.ЛР – 01
Изм. Лист |
№ докум. |
Подпись Дата |
Разраб. |
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Провер. |
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Т. Контр. |
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Н. Контр. |
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Лит. Лист Листов
Отчѐт о |
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Лабораторной работе №1 |
НГТУ, каф. КПМИС |
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11
nинд
Fr,Н
Рис.2 Тарировочный график динамометра
Fr
2. Характеристики испытуемых подшипников:
Подшипник_____________________________
Тип____________________________________
Серия__________________________________
Внутренний диаметр d =__________мм Наружный диаметр D =__________мм Ширина В =__________мм
Диаметр тел качения Dw =_________мм Число тел качения z = _________
Масштабно-тарировочный коэффициент:
K |
Fr |
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Н |
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nинд |
число делений индикатора |
При Fr 1000Н
nинд = _______
При Fr 2000Н
nинд = _______
Рис.3 Сечение подшипника
Значения коэффициентов (по литературным данным)
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f = _______ , =________, f 0= _______ |
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3. Зависимость приведённого коэффициента трения от нагрузки Fr при |
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n = |
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мин-1 |
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Таблица 1 |
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Зависимость моментов трения Т от Fr |
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№ |
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Эксперимент: Т, Н м |
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Расчётные значения Т |
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Fr, Н |
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Уровни масла |
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2 |
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п/п |
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T = 0,5fFrd |
T = 0,5( d |
+ f0Frd) |
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а |
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б |
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1 |
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2 |
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6 |
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7 |
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Лист
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2 |
Изм. Лист |
№ докум. |
Подпись Дата |
12
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Таблица 2 |
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Экспериментальные значения f и f0 |
в зависимости от Fr |
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№ |
Fr, Н |
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f = 2T / Frd |
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TF = T – T0, Н м |
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f0 = 2TF / Frd |
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п/п |
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6 |
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7 |
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Примечания к табл. 1, 2. |
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1. Уровни масла: а - без заполнения подшипника; |
б - до центра нижнего тела качения; |
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в - до внутреннего кольца. |
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2. T0 – момент при Fr = 0. |
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103 |
Т, Н м |
f, f |
0 |
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Fr, |
Н |
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Fr, Н |
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Рис.4. Зависимость Т от Fr (табл.1) |
Рис.5. Зависимость f и f0 от Fr (табл.2) |
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4. Зависимость приведённого коэффициента трения от частоты вращения n при |
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Fr = |
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Н |
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Таблица 3 |
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Зависимость Т, f, , f0 |
от n |
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n, |
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Т, Н м |
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f = 2000 103T |
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T0 |
(Fr = 0) |
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= 2000 102T |
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TF = T – T0 |
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f0 = 2000 103TF |
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-1 |
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F d |
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d |
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Frd |
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мин |
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r |
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а |
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б |
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в |
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а |
б |
в |
а |
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б |
в |
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а |
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б |
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а |
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б |
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в |
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а |
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б |
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в |
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970 |
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1880 |
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2860 |
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Лист |
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Изм. Лист |
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№ докум. |
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Подпись |
Дата |
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3 |
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13 |
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Т, Н м |
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f, f0, |
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n, мин –1 |
n, мин –1 |
Рис. 6. Зависимость Т от n (табл.3) |
Рис. 7. Зависимость f, f0, от n (табл.3) |
5. Анализ результатов и выводы:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Лист
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4 |
Изм. Лист |
№ докум. |
Подпись Дата |
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14 |
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Составили А.А. Ульянов, Ю.П. Кисляков |
15