EOK2-021 Exam prep

What is the primary reason for applying roughing cuts in machining?

• To achieve a smooth surface finish

• To remove large amounts of material quickly

• To reduce tool wear

• To increase the cutting speed

Why are finishing cuts applied in machining?

• To increase the rate of material removal

• To achieve precise dimensions and a smooth surface finish

• To reduce the use of cutting fluids

• To extend the life of the cutting tool

Explain the meaning of the term "feed rate" in machining.

• The speed at which the cutting tool rotates

• The distance the tool moves per revolution of the workpiece

• The amount of material removed per minute

• The speed of the workpiece

What does the term "cutting speed" refer to in machining?

• The speed at which the workpiece rotates

• The optimal rate at which material should be removed

• The distance the tool moves per revolution of the workpiece

• The rate of material removal

Which factor can influence the rate of material removal when machining?

• The colour of the cutting tool

• The type of cutting fluid used

• The hardness of the workpiece material

• The temperature of the workshop

What is one reason for using cutting fluids in machining?

• To increase the weight of the workpiece

• To cool and lubricate the cutting tool

• To change the colour of the workpiece

• To increase the speed of the machine

What does the term "tolerance" mean in machining?

• The maximum speed of the cutting tool

• The allowable variation of a dimension

• The weight of the workpiece

• The temperature of the cutting fluid

Explain the meaning of the term "limits of size" in machining.

• The maximum weight of the workpiece

• The extreme maximum and minimum sizes allowed

• The speed limit of the cutting tool

• The maximum temperature of the cutting fluid

What is the function of the tailstock on a centre lathe?

• To hold the cutting tool

• To support the workpiece at the end opposite the headstock

• To increase the speed of the lathe

• To measure the length of the workpiece

Define what is meant by "physical standards" in machining.

• The written specifications for a part

• The actual physical objects used to calibrate equipment

• The maximum speed of the machine

• The temperature range for machining