Introduction to CNC Machine tools

CNC stands for

• Central Numerical Control

• Central Numerical Computer

• Computer Numerical control

• Computer Node Centre

What part of the lathe holds the work piece?

• Ways
• Tool Turret
• Chuck
• Spindle

What part of the lathe spins the work piece?

• Ways
• Tool Turret
• Chuck
• Spindle

Which axis moves the tool perpendicular to the work piece in a turning center?

• X-axis
• Y-axis
• Z-axis

Moving the tool toward the material in a turning center is called?

• Negative X-axis
• Positive X-axis
• Negative Z-axis
• Positive Z-axis

The development of first NC machine tool project was awarded to

• Harvard Lab
• USAF
• MIT
• No of these

What does CNC stands for?

• Computer network control
• Computer numerical control
• Computer nested control
• Computer numerical controller

Changing of tool in spindle is atumoted in CNC

• TRUE
• FALSE

The running cost of CNC is higher than coventional machine

• TRUE
• FALSE

Tacho generator is used to measure

• Velocity
• Position
• Time
• None of these