5. Найдите соответствующие ответы на вопросы и напишите их в той последовательности, в которой заданы вопросы:
Вопросы
1. What are the single-column vertical turning mills designed for?
2. What mechanisms are the machines provided with?
3. What operations does the machine perform?
4. By what means is motion to the table transmitted?
5. What mechanism is the gearbox provided with?
Ответы
a. By means of V-belts and gearbox.
b. For roughing and finishing operations.
c. With multidisk friction clutch.
d. Cylindrical turning, facing, cutting and drilling.
e. With vertical turret head and horizontal side head.
6. Закончите предложения, выбрав соответствующий вариант окончания:
1. Vertical turret head travels along....
2. Horizontal side head travels along....
a) the horizontal ways of the cross-rail;
b) the vertical ways of the column.
3. Motion to the table is transmitted by....
a) cross-rail; b) V-belts and gearbox.
4. This machine is called....
a) vertical turret head; b) vertical turning mill.
Контрольная работа Вариант 5
1. Найдите в правой колонке русские эквиваленты английских слов и словосочетаний:
1. engine lathe а. задняя бабка
2. turning b. фартук (суппорта)
3. drilling с. каретка
4. screw cutting d. передняя бабка
5. headstock e. сверление
6. tailstock f. токарно-винторезный станок
7. saddle g. нарезание винтов
8. lever h. рычаг
9. apron i. рукоятка
10. carriage j. суппорт
11. guide ways k. обточка
12. handle 1. направляющие (станка)
2. Переведите на русский язык интернациональные слова:
metal, operation, principal, spindle, function, centre, control, base, special, bolt.
3. Прочтите текст и выполните следующие за ним упражнения:
ENGINE LATHE
1. The engine lathe is the most commonly used machine-tool. It is used for great variety of metal operations, such as turning, drilling, screw cutting and many others.
2. The principal units of the lathe are the bed, the headstock, the tailstock and the carriage with the apron.
3. The bed is the base of any machine-tool and it is made of grey iron casting on which the saddle and the tailstock slide along special" guide ways. The headstock is also located and bolted on the bed.
4. The headstock contains the spindle and the speed gearbox. The spindle is the part of the machine to which power is applied to rotate the work. The changing of the spindle speed is effected by levers.
5. The tailstock consists of a casting fitted to the bed. The function of the tailstock is to support one end of the work turned between centers and to mount the tools.
6. The carriage of the lathe, which carries the tool, is made up of two principal parts: the saddle and the apron. The saddle travels along the guide ways of the bed. The apron represents the front wall of the carriage. On the front of the apron are mounted the handles and levers by which the actions of the tool are controlled.
Переведите на русский язык письменно абзацы 3,4 и 5.
5. Найдите соответствующие ответы на вопросы и напишите их в той последовательности, в которой заданы вопросы:
Вопросы
1. What operations is the engine lathe used for?
2. What are the principal units of the lathe?
3. What units are located on the bed?
4. What is the function of the tailstock?
5. Where are the handles and levers mounted?
Ответы
a. To support one end of the work turned between centers.
b. On the front of the apron.
c. For turning, drilling, screw cutting and others.
d. The headstock, the saddle and the tailstock.
e. The bed, the headstock, the tailstock and the carriage with the apron.
6. Закончите предложения, выбрав соответствующий вариант окончания:
1. The unit that contains the spindle and the gearbox is called....
2. The unit that supports one end of the work turned between centers is called …
3. The unit which carries the tool is called....
a) the carriage;
b) the headstock;
c) the tailstock.
4. The unit on which the saddle and the tailstock slide is called …
a) the carriage; b) the bed; c) the headstock.
5. The units, by which the actions of the tool are controlled, are called....
a) guide ways; b) the saddle and the apron; c) levers and handles.
Контрольная работа Вариант 6
1. Найдите в правой колонке русские эквиваленты английских слои и словосочетаний:
1. grinder а. кронштейн
2. lever b.заготовка
3. wheel slide с. продольное направление
4. cross-feed d. налаживать станок (для какой-л.работы)
5 wheel spindle e. регулировать
6. bracket f. шлифовальный станок
7. wheel head g. шлифовальный суппорт
8. to clamp h. рычаг
9. to set-up i. поперечная подача
10. to adjust j. шлифовальная головка
11. longitudinal direction k. шпиндель шлифовального круга
12. workpiece 1. зажимать
2. Переведите на русский язык встречающиеся в тексте интернациональные слова:
universal, cylinder, type, mass, massive, construction, hydraulic, control, function, spindle, motor.
3. Прочтите текст и выполните следующие за ним упражнения:
THE HYDRAULIC GRINDER
1. This universal grinder is designed for grinding cylindrical holes and faces of workpieces. It is widely used for lot production in various types of machine building plants.
2. Machines of this type are of very massive construction, but they are designed in such a way that they can be operated as easily as machines of smaller sizes.
3. They are hydraulically operated and controlled by a single lever located at the front end of the machine. This single lever controls all functions of the machine including all movements of the wheel slide, cross-feed, starting and stopping the work of the spindle.
4. The wheel spindle is driven by a V-belt from a motor located on a bracket on the wheel slide. The cross-feed for the wheel slide is operated by a hydraulic unit.
5. The wheel head is clamped on the top surface of the table. When setting up the grinder, the wheel head can be adjusted in a longitudinal direction to suit the length of the workpiece.