Материал: 2177
TEST YOURSELF
The delivery and changing of cutting tools to the CNC machine tools seems to be a 1) ___ requirement in FMS. Typical CNC machine tools consist of 2) ___ attached tool magazines, equipped with automatic tool
changers, with capacities of from 30 to 120 3) ___. |
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An optimum tooling system would have all required cutting tools 4) |
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in the various machine tool magazines. However, tooling requirements |
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generally 5) |
the machine tool magazine capacities in most practical |
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FMS. Also, due to cutter 6) ___ and breakage, tools must inevitably be 7) |
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As for tool delivery two approaches should be mentioned: 8) ___ and |
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tool delivery environment, an 11) ___ brings the cut- |
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. In a 10) |
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ters to the machines and 12) ___ inserts them into the machine tool 13) |
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Since the aim of FMS is to strive towards 14) ___ manufacturing, an |
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15)иtool delivery system is generally preferred. Such an 16) ___ tool |
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delivery/changing system includes 17) ___ along with portable 18) ___, |
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each capable of storing up to 30 cutting tools. |
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A special 19) |
crane transports entire 20) ___ between the tool |
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room and columnsбlocated 21) the machine tool. The machine’s central |
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column travels 22) ___ enabling the tool drums to be exchanged. |
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A modified version of this system enables the 23) ___ to be trans- |
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ported by an 24) ___. A shuttle cart exchanges the tool drum, which is |
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stored 25) ___ the machine tool. Although this system is more flexible than |
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are still re- |
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the previous one, tool drum 26) ___ and a large tool 27) |
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quired. |
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A more common approach to tool transport is mounting a 28) ___ |
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tool magazine on a 29) ___ pallet which can then be transported by an 30) |
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___ to a total delivery receiving 31)Дlocated behind each machine tool. |
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Another method for transporting tools consists of using an 32) |
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transport carrier capable of delivering 33) ___ tools at the same time. This |
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system allows all machine tools to be automatically linked with the tool |
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room and with each other. |
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How many mistakes have you done? What are they?
What were the most difficult tasks for you? Why?
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Lesson 14
Refresh the words in Ex. I (Lesson 13) and get ready to have a dictation. Fill in the questionnaire on tool delivery systems.
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I. Listen and repeat. Using the dictionary, write in the [trxn'skripSn] |
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of the words into the table below. |
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1 |
retract |
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отводить; перемещать назад |
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2 |
range |
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ряд, серия, ассортимент |
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flexibility |
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гибкость |
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prevent |
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предотвращать, предупреждать |
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fall out |
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выпадать |
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inclined |
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наклонный |
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sturdy |
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прочный, крепкий |
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8 |
иblow ……………… |
удар |
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9 |
PVC |
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поливинилхлорид |
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spattering |
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разбрызгивание |
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molten |
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……………… расплавленный |
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perforationб……………… отверстие |
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II. Find the words in the text and translate the word combinations |
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with these words. |
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III. Work in pairs. Study the prompts below. Think of 2 or 3 sentences using the words from Ex. I and Prepositions. Discuss your sentences
with your groupmates. 
И * Look through the text, find some Prepositional phrases and translate
them into Russian.
IV. Choose one word from the box and try to create a cinquain. Refresh the rules:
1st line: 1 word which is the title of the poem, a noun;
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2nd line: 2 words which are adjectives that describe the title;
3d line: 3 words that tell the reader more about the subject of the poem or shows action (they are verbs or often gerunds);
4th line: 4 words that show emotions about the subject of the poem and may be individual words or a phrase;
5th line: 1 word that is a synonym of the title or is very similar to it.
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spindle |
drum |
tool |
advantage |
changer |
limit |
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V. Read the text and answer the questions: |
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What type of the ATC are there? |
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2. |
What are the advantages of the ATC? |
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3. |
What is the core of the CNC Tool Storage System? |
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AUTOMATIC TOOL CHANGER |
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The CNC machines are designed to perform a number of operations |
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in a single setting of the job. A number of tools may be required for mak- |
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ing a complex part. In a manual machine, the tools are changed manually |
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whenever required. In a CNC machine, tools are changed through program |
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instructions. The tools are fitted in a tool magazine or drum. When a tool |
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needs to be changed, the drum rotates to an empty position, approaches the |
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old tool and pulls it. Then it again rotates to the position of the new tool, |
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fits it and then retracts. This is a typical tool changing sequence of an au- |
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tomatic tool changer (ATC). The concept of the ATC is that the range of |
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tools for a specific job shall be made available for automatic selection and |
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positioning. |
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An Automatic Tool Changer cab be: |
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Drum Type (for holding small number of tools usually not more than 30, |
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stored on periphery of the drum and tool search speed is faster); |
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Chain Type (for more number of tools (40 or more), tools search speed is |
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less). |
As soon as the tool selection command is received by the system, the |
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selected tool comes to a fixed place known as tool change position. The se- |
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lected tool is transferred to the spindle from the magazine after the previous tool is transferred to the magazine from the spindle. This is called tool change cycle.
Automatic Tool Changer Advantages:
(a)lines are changed in seconds instead of hours;
(b)operator safety is increased by changing tools automatically;
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(c)tools are changed in seconds for maintenance and repair;
(d)flexibility is increased;
(e)heavy and large multi-tools are automatically exchanged.
CNC Tool Storage System
СThe CNC tool storage system has been designed to ensure maximum protection of your CNC tools during handling, transport and storage.
With its original two-level design, the tool rack offers improved support and increased stability by preventing tools from falling out, even in an inclinedиposition. The tool rack surface is made of sturdy PVC and protects tools against blows, corrosion and spattering molten metal while favoring coolant drainage and limiting contact surfaces with the tool.
The tool rack is offered with perforations to insert Taper, Straight, Sandvik Capto,бHSK, KM and VDI. The tool rack is also available without perforations.
The tool rack is the core of the CNC Tool Storage System.
VI. A. Watch a shortАvideo #6 (01:49) to correct the following typescript: make the right boundaries between sentences, write the capital letters, choose one of word combinations in bold and italics that you’ve heard.
the Bott CNC Tool Storage Range deliverДin/delivering flexible effort and able/affordable tool storage develop to protect high investments in tooling and machinery and I am sure/ensure dimensional integrity of calibrating/color brightening tooling before in sort of/insertionИto machine the bot CNC tool storage system is integrated into the bot QBO range of cupboards/car boats cabinets ten benches/cheese and trolleys the system components are to move about/removable molded inserts that are in corporate in/incorporated into tool carriers/careers or tool blocks to provide easy access within a highly flexible system these inserts which hold all/of the major tool shank types of coffer/offer stability for tree set/preset tooling CNC trolleys are available in three main types the compact trolley offers fixed position storage for tool careers/carriers as well as base and top shell/shelf areas additional features has/have been de-
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sign engineered/engineers into the heavy duty trolley which can be supplied within in shell/with an end shelf and which and ables/enables tool carriers to be fixed and as just/as adjustable heights and angels/angles the CNC tool/two block trolley on the other hand represents a very high car part city/capacity solution the CNC cupboard/car boat is based on the bot QBO product and is available in a wide range of sizes the Box CNC range a system that helps car stomach/customers or gun eyes/organize protect/pre-tech and trans sport/transport valuable CNC two
link/tooling |
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B. Do the translation of the corrected text for your imaginary boss. |
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Compare it with your groupmates and choose the best translator. |
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C. Write an abstract to this video. |
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VII. Fill in the gaps. |
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1. |
The tools are fitted … a tool magazine. |
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2. |
Tools areбstored … periphery of the drum in a drum-type ATC. |
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3. |
The selected tool is transferred … the spindle from the magazine. |
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4. |
Tools are changed … seconds. |
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5. |
CNC tools are protected … handling, transport and storage. |
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6. |
The tool rack surface is made of sturdy polyvinyl chloride. |
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7. |
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The tool racks can be … or … perforations. |
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VIII. Complete the chart using the information from the text.
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ATC |
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concept |
types |
advantages |
What? |
What? |
What? |
Compare your chart with others in your group asking What-questions.
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