018 Short Question Paper Revision

What are the two main types of conventional milling machines?

• Vertical milling machine

• Horizontal milling machine

• 3-axis CNC milling machine

• 5-axis CNC milling machine

How would you reduce vibration on a horizontal milling machine?

• Decrease the feed rate

• Decrease the cutting speed

• Place the over arm support as close as possible to the cutter

• Place the workpiece as close as possible to the cutter

The cutting tool on a horizontal milling machine is held on a...

• Arbor

• Collet

• Tool post

• Chuck

What is the purpose of locking slides when machining?

• To reduce vibration

• To improve surface finish

• To slow down feed rate

• To increase cutting speed

What is the purpose of parallel strips?

• To accurately support the workpiece in a vice

• To accurately support the vice in the machine worktable

• To accurately support the cutting tool in a collet

• To accurately support the workpiece without need for a vice

What does the apron of a centre lathe do?

• Enables tools to be stored safely

• Enables the cutting speed to increase

• Enables tool post to be adjusted

• Enables feed to be engaged

When turning, vibration can be reduced by:

• Reducing the feed rate

• Reducing the cutting speed

• Reducing tool deflection

• Reducing coolant used

What is the function of the revolving centre of a lathe machine?

• To set up the cutting tool

• Supporting the workpiece

• To measure the cutting tool

• To measure the workpiece

What is a 4 Jaw Chuck used for holding?

• Circular workpieces

• Large workpieces

• Heavy workpieces

• Various shapes of workpieces

Why would you set the lathe tool a small amount below the centre of the workpiece?

• To increase rake angle

• To decrease rake angle