Drilling machines

The most drilling machines are equipped with mechanisms, permitting not only drilling, countersinking and reaming, but also cutting female threads with the help of taps. Both universal and special-purpose type radial "drills are built.

3. Ответьте письменно на вопросы

– What processes does metal undergo before it is formed into the required shape?

– How are the machines which perform this work called?

– What is the most common machine-tool in any workshop?

– What are the main parts of a lathe?

– What is the automatic lathe?

– How do we call a worker, skilled in the use of a lathe?

– What machine-tools that works on plane surfaces, do you know?

– What do the drilling machines drill?

– Where are the threads milling machines used?

– What are the main types of lathes?

– What is the most convenient and efficient machine?

– What are the most drilling machines equipped with

Литература из общего перечня литературных источников

[6, 80-82]