- •Chapter II mechanical tools
- •I. Translate the following words and phrases from the text:
- •VII. Translate the following sentences, observing different meanings of the words and word combinations given in italics:
- •VIII. Make up questions to which the italicized words are the answers:
- •IX. Using the following words and word combinations describe the drawing shown in Fig. 2:
- •I. Translate the following words and phrases from the text:
- •II. Supply the missing words:
- •III. Translate the following sentences into English using the infinitive instead of the attributive clauses:
- •IV. Make up questions to which the italicized words are the answers:
- •V. Giving the answers to the following questions describe the principle of operation of pliers, bench-shears, and alligator shears and pipe-cutter shown in Figs 4, 5, 7, and 8:
- •I. Translate the following words and phrases from the text:
- •VI. Make up questions to which the italicized words are the answers:
- •VII. Giving answers to the following questions describe Fig. 9:
- •I. Translate the following words and phrases from the text:
- •VII. Translate the following sentences into English:
- •II. Translate the following groups of words, paying attention to the meaning of suffixes:
- •III. Supply synonyms for the following words:
- •V. Translate the following sentences observing different meanings of the words in italics:
- •VI. (a) Translate the following text using a dictionary:
- •VII. Using the following words and word combinations describe the principle of operation of the vernier calipers shown in Fig. 13:
- •VIII. Giving answers to the following questions describe the principle of operation of the micrometer shown in Fig. 14:
- •IX. Describe the measuring tools shown in Figs 15, 16, and 18.
- •6. Machine-cutting tools
- •II. Use these verbs in the past participle form and make up word-combinations using past participles as attributes:
- •III. Underline the suffixes and prefixes and translate into Russian the following group of words of the same stem:
- •IV. Choose synonymical groups out of the following list:
- •V. Change the following sentences, using the subordinate clause instead of participle phrases. Translate the sentences into Russian:
- •VI. Translate the following sentences into Russian:
- •VII. Translate the following sentences into English using different ways of expressing obligation:
- •VIII. Give different meanings of the words, give some examples of their use.
- •IX. Make up questions to which the italicized words are the answers:
- •X. (a) Read and translate the following text without using a dictionary:
- •7. Drills and rilling
- •I. Translate the following words and phrases from the text:
- •II. Retell the text giving answers to the following questions:
- •III. Form adverbs from the following adjectives:
- •IV. Underline the suffixes and prefixes and translate into Russian the following groups of words of the same stem:
- •V. Supply the missing words:
- •VI. Connect the following sentences using the conjunction either... Or:
- •VII. Translate the following sentences into English using the past participle instead of the attributive clauses:
- •VIII. Analyse and translate the following sentences:
- •IX. Describe Fig. 22 orally using the following words and word combinations:
- •8. Threading tools
- •I. Translate the following words and phrases from the text:
- •II. Retell the text giving answers to the following questions:
- •III. Supply synonyms for the following words:
- •I. Translate the following words and phrases from the text:
- •VII. Connect the following sentences using participle constructions and translate the sentences into Russian:
- •VIII. Giving answers to the following questions describe the construction and principle of operation of the centre shown in Fig. 26:
- •IX. Describe the construction of the running centre shown in Fig. 27.
- •10. Holding work in a chuck
- •I. Translate the following words and phrases from the text:
- •VII. Giving answers to the following questions describe the jaw chuck shown in Fig. 28 and its principle of operation:
- •VIII. Using the following words and word combinations describe the construction and principle of operation of the concentric chuck shown in Fig. 29:
- •IX. Describe the construction and principle of operation of the contracting chuck shown in Fig. 30.
- •11. Holding work in a vice
- •I. Translate the following words and phrases from the text:
- •VI. Translate into English:
- •VII. (a) Read and translate the text without using a dictionary:
- •VII. Using the following words and word combinations describe the principle of operation of the swivel vices shown in Fig. 31:
I. Translate the following words and phrases from the text:
chuck, rotating vice, lathe spindle, independent jaw chuck, contracting chuck, chuck body, chuck key, to project, to reverse, motion, to transmit, to mesh, bevel gear, faceplate, mandrel
II. Answer the following questions:
1. Where are usually short parts held being turned in a lathe? 2. What is a chuck? 3. What types of chucks do you know? 4. What purposes are chucks used for? 5. What kind of work are magnetic chucks adapted to? 6.How is the work held in a magnetic chuck? 7. How many faceplates are most lathes equipped with? 8. What kind of work is a mandrel used for? 9. What is the advantage of mounting work on a mandrel?
III. Supply English equivalents for the following words and word combinations:
self-centering chuck, independent jaw chuck, collet chuck, radial slots, groove, spindle nose
IV. Find in the text synonyms of the following words:
collet chuck, comfortably, with the help of, slot, to revolve
V. Give derivatives from the following words and translate them into Russian:
to divide, dependent, possible, cylinder, to open, to transmit, to ensure
VI. Read and translate the following text without using a dictionary and analyse the ing-forms and ed-forms:
The standard chucks generally furnished are mechanically operated by an automatic mechanism which gives the operator total freedom of both hands for handling the work. While the machine is running to cycle time1 he simply places the work in the chuck which is held there by the work locator2 then he releases the safety foot treadle.3 There are no chucking levers or valves and gauges that require his attention and time. Standard chucks can be furnished with either two or three simple jaws and with the jaws contracting or expanding. Chucking pressures are the same at all positions and the pressures are adjustable for different types of work. All standard chucks are constructed entirely of steel having a solid steel body, and all the moving parts are made of hardened alloy steel to withstand wear.
_____________________
1. cycle time — цикл хронометрирования
2. work locator— фиксатор
3. safety foot treadle— предохранительная ножная педаль
VII. Giving answers to the following questions describe the jaw chuck shown in Fig. 28 and its principle of operation:
1. What kind of chuck is shown in Fig. 28? 2. What group of chucks does the independent four-jaw chuck belong to? 3. How many jaws has the chuck? 4. Where are the four jaws of the chuck situated? 5. How can each jaw of the chuck be adjusted? 6. What possibility is offered by the independent adjustment of jaws? 7. What is the body of the chuck provided with?
VIII. Using the following words and word combinations describe the construction and principle of operation of the concentric chuck shown in Fig. 29:
a concentric chuck, to have three jaws, to move in and out, a chuck key, to be inserted, the opening, one of three bevel gears, to be meshed with a large bevel gear, on the flat reverse side, the large bevel gear, a multiturn spiral groove, to be cut, the motion of one of the bevel gears, to be transmitted, by means of the chuck key, to move simultaneously and uniformly, the slots of the body, due to the spiral groove, rotating in that or another direction, the gear with the spiral grooves, to cause, approaching or removing, the jaws of the chuck, from the centre, due to this, the work, to be clamped or unclamped, the advantage, the concentric or self-centering chuck, in moving all jaws simultaneously