Compare the two cars using the words from the box above

9. Why it takes longer to make a Morgan than a Mini?

* (“Engineering” Workshop by Lindsey White, OUP; Unit 10, pg.11, ex.5)

10. Which car would you like to have? Why? Which factory would you like to work in? Why?

* (“Engineering” Workshop by Lindsey White, OUP; Unit 10, pg.11, ex.6)

Check the knowledge of active vocabulary from this part with the help of “ACTIVE VOCABULARY” section.

Part II

NUMERICAL CONTROL

Read the following texts (A and B) and fill in the gaps with the following words:

steps digital computer numerical controlled production part Numerical Control systems design component original produce

A.

(1) __________ (NC) refers to the automation of machine tools that are operated by abstractly programmed commands. The first NC machines were made in the 1940s and 50s. Existing tools were modified with motors. These early mechanisms were designed into (2) __________ computers, and created the modern CNC – (3) __________ machine tools - that have revolutionized the (4) __________process. In modern CNC (5) __________, end-to-end component design is highly automated using CAD/CAM programs. The programs (6) _________ a computer file that is interpreted to give the commands needed to operate a particular machine, and then loaded into the CNC machines for (7) __________. Since any particular (8) __________ might require the use of a number of different tools - drills, saws, etc. - modern machines often combine multiple tools into a single "cell". In other cases, a number of different machines are used with an external controller and human or robotic operators that move the component from machine to machine. In either case the complex algorithm of (9) __________ needed to produce any (10) __________ is highly automated and produces a part that closely matches the (11) __________ CAD design.

B.

Computer-aided manufacturing industries components CAM body design engineers programs manufacturing

(1) __________ (CAM) is the use of computer-based software tools that assist (2) __________ and machinists in (3) __________ or prototyping product (4) __________ (or parts). CAM is a programming tool that makes it possible to manufacture physical models using computer-aided design (CAD) (5) __________. CAM creates real life versions of components designed within a software package. CAM was first used in 1971. The first commercial use of (6) __________ was in large companies in the aerospace (7) __________, for example “ UNISURF”, and automotive, for example “ Renault” for car (8) __________ and tooling.