Flash_on_English_for_Mechanics_Electronics_and_Technical_Assistance

3 n 3 Listen and complete the text with the words in the box.

creation advantages boards drawings software defects faster

instructions traditional reduce modification electronically

CAD/CAM systems

Drawing (1) and manual drawing are not always precise and rapid (2) ______ ~

design is usually slow, especially in its revision and (3) _ _ ~. For this reason manufacturing firms have

replaced manual drawing wi th computer-aided design (CAD) to carry out functions related to design and production.

This computer technology assists the designer i n the (4) , modification and analysis of a physical

object. Nowadays computer (5) can easily provide a three-dimensional drawing, which allows

engineering designers to see how mechanical components may fit together without making models thus saving a lot of

time. CAD is much (6) and more accurate than manual drawing, designs can be quickly modified,

reproduced and transmitted (7) _ __. Computer simulated analysis of the model helps experts find

problems and (8) without bUilding prototypes, in this way saving a lot of money and time. When

the design is ready, the CAD system can generate the detailed (9 ) needed to start

product manufacturing. When CAD systems are linked to Wild '!!id i ill i!i ",!illi:l!

manufacturing equipment controlled by computers, they form an ~O'~r:v! .... '~:~;~.;; _ ~ ... " •• =,s -'.-"~!!Itr;:;:::,Jv~~,"0_ -;;. v g9~a~,,'n :. U @B: :J nO' "'i""~~~>t'l>

integrated CAD/CAM system. Computer-aided manufacturing r:;.~."~ [~i ~'

(CAM) offers significant (10) over i :-,~ .. - x

traditional approaches by controlling manufacturing equipment ~

with computers instead of human labour. CAM converts the design I

of a component into computer language and it gives

(1 1) to the computer regarding machine

operations.

Thanks to CAD/CAM systems it is possible to eliminate operator

errors and (12) manufacturing costs.

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4 Read the text again and match each sentence with its ending.

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1 CAD helps designers

2 By using a CAD technology

a D seen from any angle and are easily manipulated.

b D to draw, modify and correct designs.

3 Unlike manual drawing, CAD

4 CAD allows us to save

c D the design into computer language.

d D defects can be easily found.

5 CAD designs can be e D provides three~dimensional drawings.

6 CAM is the use of computer software D time and money.

7 The CAM system tu rns g D minimise errors and manufacturing costs.

8 CAD/CAM systems h D to control machine tools in the manufacturing process.

MY GLOSSARY

• 0 carry out /td 'k::eri aut/ ____ to replace /td n'pleIs/ ___ _
  drafter /dra:ftd(r)/ ruler I'ru:ld(r)/ ____
  drafting Idra:ftJl]/. __ ~ skill /SkIl/ ----------------
  ~o fit /td fIt/ ____ technical drawing Itekmkl 'drJ:II]/ _.
  ::'ardness Iha:dnes/ _ _ to save /td selv/ ---------------
  ?<lint triangle Itrar::el]g,l/
  :;Jwtotype Iprdutdtarp/ T-square /ti:skwed(r)/
  ;,:otractor /prd'tr::ektd(r)/ ____ width /wld8/ ____

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