4. Переведите на русский язык письменно абзацы 1,2 и з.

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.