Сборник практикумов по учебной дисциплине «Иностранный язык в профессиональной деятельности» для студентов специальности Монтаж, техническое обслуживание и ремонт промышленного оборудования (по отраслям)

Министерство образования и молодежной политики

Свердловской области

ГАПОУ СО «Ревдинский многопрофильный техникум»

Сборник практикумов по учебной дисциплине

«Иностранный язык в профессиональной деятельности»

для студентов группы 318-МТ/17 Монтаж, техническое обслуживание и ремонт промышленного оборудования (по отраслям)

Преподаватель: Петрова Анастасия Константиновна

Ревда

Содержание

Пояснительная записка. 3

Практикум №1. Milling Machine. 4

Практикум №2. Vertical Milling Machine. 5

Практикум №3. Horizontal Milling Machine. 7

Практикум №4. Metal Planing Machine. 9

Практикум №5. Mechanism of Transverse-planing Machine. 11

Практикум №6. Mechanism of Parallel-planing Machine. 13

Пояснительная записка

Данный сборник практикумов по учебной дисциплине «Иностранный язык в профессиональной деятельности» предназначен для студентов группы 318-МТ/17 Монтаж, техническое обслуживание и ремонт промышленного оборудования (по отраслям) с целью знакомства с новыми темами и их закрепления с использованием электронного обучения и дистанционных образовательных технологий.

Каждый практикум содержит практические или контрольные задания с инструкцией к ним и время, отведённое на выполнение заданий.

Практикум №1. Milling Machine

Exercise 1. Read and write down new words and phrases.

milling machine	фрезерный станок	to clamp	прикреплять
cutting edge	режущая кромка	vise	тиски
barrel-shaped cutter	бочкообразный резец	axis	оси
disk cutter	дисковый резец	workpiece	заготовка
end mill	концевая фреза	shaft	вал, ось
a tapered shank	конический хвостовик	a spur gear	цилиндрическое зубчатое колесо
milling operation	фрезерование
to ground	шлифовать	groove	паз, борозда

Exercise 2. Translate the text into Russian.

Milling machine is a device that rotates a circular tool. It has a number of cutting edges symmetrically arranged about its axis; the workpiece is commonly held in a vise or similar device clamped to a table that can move in three perpendicular directions. Disk- or barrel-shaped cutters are clamped through holes in their centres to arbors (shafts) attached to the machine spindle; they have teeth on their peripheries only or on both peripheries and faces. An end mill is a cutter shaped like a pencil with a tapered shank that fits into the machine spindle; it has cutting teeth on its face and spiral blades on the lateral surface.

In the milling operation, the workpiece is carried either on a table that is driven manually or by power against the rotating cutter. Milling machines usually produce flat surfaces, but any shape that can be ground on the cutter will be reproduced on the work. To mill the teeth of a spur gear, a disk-type cutter with its cutting edges in the shape of the space (groove) between the teeth of the gear is used, milling the gear blank one space at a time.

Exercise 3. Complete the sentences.

1. Milling machine has a number of...

2. An end mill is a...

3. Milling machines usually produce...

Практикум №2. Vertical Milling Machine

Exercise 1. Read and write down new words and phrases.

to extend	удлинять	bed type milling machine	бесконсольный фрезерный станок
plunge cut	врезание
drilling	сверление	turret milling machine	револьверный фрезерный станок
quill	пиноль
knee	консоль	drill press	сверлильный станок
milling cutter	фреза	column	стойка
spindle speed control lever	рычаг управления скоростью шпинделя	spindle speed gear lever	рычаг скорости вращения шпинделя
saddle	салазки, суппорт	оil tank	масляный бак
lock bar	блокировка	manual wheel	ручное колесо

Exercise 2. Translate the text into Russian.

In the vertical milling machine the spindle axis is vertically oriented. Milling cutters are held in the spindle and rotate on its axis. The spindle can generally be extended, allowing plunge cuts and drilling. There are two subcategories of vertical milling machines: the bed type milling machine and the turret milling machine.

A turret milling machine has a stationary spindle and the table is moved both perpendicular and parallel to the spindle axis to accomplish cutting. Turret milling machine often have a quill, which allows the milling cutter to be raised and lowered in a manner similar to a drill press. There are two methods of cutting in the vertical (Z) direction: by raising or lowering the quill, and by moving the knee.

In the bed type milling machine, however, the table moves only perpendicular to the spindle's axis, while the spindle itself moves parallel to its own axis.

Turret milling machine are only practical as long as the machine remains relatively small. As machine size increases, moving the knee up and down requires considerable effort. Therefore, larger milling machines are usually of the bed type.

Exercise 3. Answer the questions.

1. Why is the vertical milling machine called so?

2. How many are there subcategories of vertical mills?

3. What does turret milling machine consist of?

4. How to cut in the vertical (Z) direction?

5. How do the table and the spindle move in the bed type milling machine?

Практикум №3. Horizontal Milling Machine

Exercise 1. Read and write down new words and phrases.

to be mounted	установлен	built-in	встроенный
rotary table	поворотный стол	arbor	вал
side mill	боковая фреза	face mill	торцевая фреза
cross section	поперечное сечение	plane	плоскость
circular saw	циркулярная пила	slot	паз
radii	радиусы	bevel	скос
power-take-off provision	механизм отбора мощности	gear	зубчатое колесо

Exercise 2. Translate the text into Russian.

A horizontal milling machine has the same sort as the vertical one does but the cutters are mounted on a horizontal spindle across the table. Many horizontal milling machines also have a built-in rotary table that allows milling at various angles.

The real advantage of end mills and the other types of tools lies in arbor-mounted cutters, called side and face mills, which have a cross section rather like a circular saw, but are generally wider and smaller in diameter. Because the cutters have good support from the arbor and have a large cross-sectional area, quite heavy cuts can be taken. These are used to mill grooves.

Plain milling machines are used to shape flat surfaces. Several cutters may be connected together on the arbor to mill a complex shape of slots and planes. Special cutters can also cut grooves, bevels, radii, or indeed any section desired. These specialty cutters tend to be expensive.

It is also easier to cut gears on a horizontal milling machine. Some horizontal milling machines are equipped with a power-take-off provision on the table. This allows the table feed to be synchronized to a rotary fixture, enabling the milling of spiral features such as hypoid gears.

Exercise 3. Fill in the gaps with new words.

1. The cutters are ___ on a horizontal spindle across the table.

2. The real advantage of end mills and the other types of tools lies in ___-___ cutters, called ___ and ___ mills.

3. Because the cutters have good support from the ­­­___ and have a large ­­___-___ area, quite heavy cuts can be taken.

4. Special cutters can also cut ­­­___, ___, ___, or indeed any section desired.

Практикум №4. Metal Planing Machine

Exercise 1. Read and write down new words and phrases.

metal planing machine/planer	строгальный станок по металлу	metal planing	строгание металла
parallel-planing machine	продольно-строгальный станок	reciprocating movement	возвратно-поступательное движение
transverse-planing machine	поперечно-строгальный станок	caliper	суппорт
transmission	передача	one-rack	одностоечный
clutch	муфта	two-rack	двухстоечный
working stroke	рабочий ход	idle	холостой ход
feed	подача	slider	ползунок

Exercise 2. Translate the text into Russian.

Metal planing is the process of removing the surface layer of a surface in order to give it the required shape and size. A planer is a type of metalworking machine tool that uses linear relative motion between the workpiece and a single-point cutting tool to cut the work piece. There are several types of machines designed for working with metal at different stages of the production of parts.

The main purpose of parallel-planing machines is the processing of disoriented planes, mainly on large parts. The workpiece is fixed on the table, making a reciprocating (main) movement. Cutters are fixed in calipers. The cutting of the metal layer occurs during the working stroke of the table with the workpiece in the direction of the arrow. Parallel-planing machine has a mechanism for moving the cutter in the vertical or horizontal direction. Parallel-planing machines designed for universal work are divided into four groups by design: manual, one-rack, two-rack and portal.

Transverse planing machines are mainly intended for the manufacture of relatively small parts. The cutter makes a horizontal reciprocating motion with speeds of the working stroke and idle. This movement is characterized by the number of double strokes per minute of the slider. One double stroke consists of a working stroke in which the cutter cuts a layer of metal. Thus, in transverse planing machines, the movement of the cutter is the main movement - the cutting movement, and the movement of the workpiece in the transverse direction is the feed movement.

Exercise 3. Answer the questions.

1. What is metal planing?

2. What is metal planing machine?

3. Why are parallel-planing machines used?

4. What is the main movement of the table in the parallel-planing machine?

5. What types can a parallel-planing machine be?

6. Why are transverse planing machines used?

7. What is the main movement and the feed movement in the transverse planing machines?

Практикум №5. Mechanism of Transverse-planing Machine

Exercise 1. Read and write down new words and phrases.

column	стойка	vertical guides	вертикальные направляющие
slide	ползун	horizontal guides	горизонтальные направляющие
bedplate	станина	tool holder	резцедержатель
crossbar	поперечина	rectilinear	прямолинейный
cast-iron	чугун	box-shaped	коробчатой формы
strap	планка	rocker mechanism	кулисный механизм
screw	винт	bracket	кронштейн

Exercise 2. Translate the text into Russian.

There is one of the most common transverse-planing machine. The main unit of this machine is the bedplate, on the horizontal guides of which the slider moves with a caliper. A crossbar moves along the vertical guides of the bedplate, and a table moves along the guide rails of the crosspiece, which is supported by the column for greater stability.

The workpiece is fixed on the table, on the horizontal and vertical supporting surfaces of which for this purpose T-shaped grooves are provided. The cutter is fixed in the tool holder mounted on the caliper.

The main working movement (rectilinear reciprocating) is communicated to the slider with a cutter.

The bedplate is a cast-iron box-shaped case located on a plate. Internal ribs of the bedplate provide the necessary strength and rigidity. There are flat horizontal guides on the upper part of the bedplate to which the straps are attached with screws. A slider moves along these guides.

There are flat guides for vertical movement of the crossbar on the front wall of the bedplate on which the table is fixed. There is a gearbox inside the bedplate and a rocker mechanism. There is a bracket on the rear wall of the bedplate, where the electric motor is mounted. There is a tray to drain the oil from the slide rails.

Exercise 3. Fill in the gaps with new words and phrases.

1. The main unit of this machine is the ___.

2. The slider moves on the ___ ___ of the bedplate.

3. The ___ moves along the vertical guides of the bedplate.

4. A table is supported by the ___ for greater stability.

5. The cutter is fixed in the ___ ___ mounted on the caliper.

6. The bedplate is a ___-___ ___-___ case.

7. There is a gearbox inside the bedplate and a ___ ___.

8. There is a ___ on the rear wall of the bedplate, where the electric motor is mounted.

9. There is a tray to drain the oil from the ___ rails.

Практикум №6. Mechanism of Parallel-planing Machine

Exercise 1. Read and write down new words and phrases.

small batch production	мелкосерийное производство	traverse	траверс
		V shape	V-образный
to be bolted	закреплен болтами	beam	балка
caliper feed box	коробка подач суппортов	duplicate control box	коробка дублированного управления
clamping mechanism	механизм зажима	planer calipers	строгальные суппорты
grinding caliper	шлифовальный суппорт	milling caliper	фрезерный суппорт

Exercise 2. Translate the text into Russian.

Parallel-planing machines are mainly used at the small batch production, as well as in repair shops. They are intended for processing flat surfaces on workpieces that are either impossible or inconvenient to process on milling machines.                                                Pic. 4. Parallel-planing machine

The main units of the parallel-planing machine are (pic. 1): bedplate 1, table 2, crossbar 3, vertical calipers 4, portal 6, feed box of vertical and side calipers 7, side column 9. Depending on the device of the traverses, they distinguish two-rack machines, in which the traverse is supported by two-racks, and one-rack.

The bedplate of a two-rack parallel-planing machine is a cast iron box-section with two guides of a flat and of a V shape. It is made up of sections that are bolted along installation. A box-shaped table moves along the guides of the bedplate with reciprocating movement. One-rack parallel-planing machines are used for processing large parts, which size do not allow processing on a two-rack machine.

The portal of the machine consists of two racks attached below to the bedplate, and connected by a beam on top. The crossbar lifting mechanism is mounted in racks and a connecting beam. There are two vertical calipers; a caliper feed box, a duplicate control box and a clamping mechanism on the crossbar.

Modern parallel-planing machines are equipped with planer calipers as well as with grinding and milling ones.

Exercise 3. True or False.

1. Parallel-planing machines are used at the large production, as well as in repair shops.

2. Parallel-planing machines are intended for processing flat surfaces on workpieces.

3. The bedplate of a two-rack parallel-planing machine is an iron box-section with two guides.

4. The bedplate of a two-rack parallel-planing machine is made up of sections that are bolted along installation.

5. One-rack parallel-planing machines are used for processing large parts, which size do not allow processing on a two-rack machine.

6. The portal of the machine consists of two racks attached below to a beam.

7. There are two vertical calipers; a caliper feed box, a duplicate control box and a clamping mechanism on the crossbar.