Ответы
Ответ:
1. What types of machine tools are there nowadays?
Some of them are very small and can be mounted on a work-bench but others are so large that we have to construct special buildings to house them.
2. What are the basic operations at a workshop
They are turning, drilling threading, etc.
3. What is a lathe?
It is a power-driven machine with special tools which can cut or form metal parts
4. Why must tools be made of very hard steels and alloys?
The metal that cuts another metal must be very hard and so tools should be made of very hard steel alloys.
5. Is the tool itself big or small?
The tool itself is very small in comparison with the mechanism that is to direct it.
6. What improves the accuracy of machine tools?
Technological progress improves accuracy of machine tools.
7. What is one of the main factors of engineering progress?
Automation is one of the main factors of engineering progress
8. What forms the basis for automated workshops?
Flexible production lines form the basis for automated workshops.
9. What is the main principle of a flexible line?
The main principle of such a flexible line is the fact that it can be switched over from one product to another, which has a similar structure but a different outline, almost instantaneously.
Объяснение: