- •Unit 3 turning and turning machines (lathes)
- •1. Read and memorize the following words and word-combinations:
- •Types of lathes
- •1. Give the main points of the text, answering the following questions:
- •2. Choose synonyms out of the following list:
- •3. Fill in the blanks with the suitable words from the text. The words are given below.
- •4. Perform the following tasks, basing of the text.
- •5. Characterize lathes according to the following plan:
- •Text 2 Engine Lathe
- •1. Give the main points of the text, answering the following questions:
- •2. Using the text, give derivatives from the following words and translate them into Russian:
- •3. Replace Russian words and word combinations by the corresponding English equivalents:
- •4. Make up questions to which the italicized words are answers:
- •5. Make up a summary of the text. Text 3
- •Vertical Eight - Spindle Semiautomatics
- •5. Give a brief summary of the text.
- •1. Answer the following questions, using the information from the text:
- •2. Translate the following groups of words, paying attention to the meaning of suffixed:
- •3. Fill in the blanks with the preposition: for, of, in, with, by, out, from, to.
- •4. Find the English equivalents for the following:
- •5. Supply the missing word:
- •Upright Drill Presses
- •1. Underline the suffixes in the following words and state what part of speech they belong to:
- •3. Translate the following sentences observing different meanings of the italicized words and word combinations:
- •4. Guess the meaning:
- •5. Describe the function and characteristics of the principal units of an upright drill press, using the active vocabulary of the text:
- •6. Try to translate the text without using the dictionary:
- •Radial Drills
- •1. Find in the text:
- •2. Find English equivalents:
- •3. Make sentences out of the two parts:
- •4. Translate the following in writing.
- •5. Make a brief summary of the text.
- •Unit 5 grinding and grinding machines
- •Purpose and Field of Application of Grinding Machines
- •Text 2 Cylindrical Grinding Machines
- •6. Summarize the text. Text 3
- •Internal Grinding Machines
- •1. Name the main points of the text answering the following questions:
- •2. Fill in the blanks using the words below:
- •3. Find in the text English equivalents for the following words and word combinations:
- •4. Using the text supply
- •5. Summarize the text.
5. Give a brief summary of the text.
DISCUSSION
Working in pairs role-play the following situations:
One of you is a manager in a shop selling lathes. You’ve got a wide range of these machines. Help your customer choose the one he needs for his toolroom, discussing the features of this or that machine.
You came to a machine-building plant in Gomel as you have troubles with the engine lathe you bought there last month. Discuss the situation with their representative responsible for repair work.
UNIT 4
DRILLING AND DRILLING MACHINES
Text 1
Purpose and Field of Application of Drilling Machines
Drilling machines are designed for producing through and blind holes in solid material for finishing (core drilling and reaming) rough holes made in the blank by drilling or other methods, as well as for tapping threads, counterboring, countersinking and spot-facing.
Employing special tools and attachments, drilling machines can be used to bore holes, cut out large holes in sheet metal by trepanning, lap precise holes and other operations.
Drilling machines find applications in machine, assembly and repair shops and in toolrooms of engineering plants, as well as in maintenance departments servicing transportation facilities, building and agricultural machinery.
Holes are machined in drilling machines with twist drills, core drills, reamers, countersinks, spotfacers and other tools; threads are cut with taps.
The following types of general-purpose drilling machines are available: (1) bench-type drill presses (single-spindle); (2) upright drill presses (single-spindle); (3) radial drills; (4) gang drills; (5) deep-hole drilling (horizontal-drilling) machines.
Most widely used in the general engineering industries are the upright drill press and the radial drill.
The principal dimensions of a drilling machine are the drilling capacity in steel of medium hardness with a tensile strength of Q=50-60 kg per sq mm, the size of the taper in the spindle socket, the distance from the spindle center to the face of the column (overhang), and the distances from the spindle nose to the table and to the base.
EXERCISES
1. Answer the following questions, using the information from the text:
What are drilling machines designed for?
What kind of holes can be bored in drilling machines?
Where do drilling machines find their applications?
What tools are employed for machining holes in drilling machines?
What are the most widely used types of drilling machines?
Can you name other types of them used in industry?
What are the principal dimensions of drilling machine?
2. Translate the following groups of words, paying attention to the meaning of suffixed:
Precise, precision; general, generally, generation; producing, production, produce; employ, employing, employment; finish, finishing, finished; special, spatiality, specialize, specialization; operate, operation, operational, operative; machine, machined, machinery.