Содержание
- 2. The variety and combinations of machine-tools today are unlimited
- 3. Some of them are very small and can be mounted on a work bench but others
- 4. There are some basic operations at any workshop
- 5. They are turning, drilling, threading, etc
- 6. The main machine-tool of such a workshop is the multipurpose lathe
- 7. What is a lathe?
- 8. It is a power-driven machine with special tools which can cut or form metal parts
- 9. The metal that cuts another metal must be very hard and so tools should be made
- 10. The tool itself is very small in comparison with the mechanism that is to direct it
- 11. Technological accuracy o progress improves f machine-tools
- 12. Today's equipment can produce parts with very high accuracy
- 13. One can find a number of machine-tools that can measure and inspect their production themselves -
- 14. Such machines can hold the parts which are to be measured and are able to indicate
- 15. A great many of such "clever" machines can be found today in our industry. Automation is
- 16. Automation is one of the main factors of engineering progress
- 17. Flexible production lines form the basis for automated workshops
- 18. The main principle of such a flexible line is the fact that it can be switched
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