CNC Machining - Intro

What does CNC stand for?

• Numerical Computerized Control

• Computer Numerical Control

• Controlled Numerical Computer

• Computerized Numerical Control

What are the basic components of an NC system?

• Mouse, CPU, Monitor

• Printer, Scanner, Router

• Computer, Keyboard, Monitor

• Program of instructions, Machine control unit, Processing equipment

What is the difference between NC and CNC machines?

• NC machines have more accuracy

• CNC machines have less flexibility

• NC machines have no memory storage

• CNC machines have higher maintenance

What is the main advantage of using CNC machines?

• Higher investment cost

• Simpler fixtures

• Greater accuracy and repeatability

• Higher scrap rates

What is the main disadvantage of using CNC machines?

• Lower maintenance effort

• Lower scrap rates

• Skilled programmers not required

• Part programming issues

Where is NC most appropriate?

• Low investment cost

• Simple part geometries

• Repeat orders

• Mass production

What are the applications of NC in the aerospace industry?

• Coordinate measuring machines, tape laying machines

• Milling, drilling, turning, boring

• Component insertion machines, drafting machines

• Mold & Die making, rapid prototyping

What are the types of CNC machine tools?

• All of the above

• Mills and Machining centers, Lathes and turning centers

• Drilling Machines, Boring Mills and Profilers

• Punch Presses and Shears, Flame/Plasma/Laser Cutting Machine

What is the purpose of using CNC machines?

• To increase parts inventory

• To increase nonproductive time

• To increase operator skill-level requirements

• To increase production

What are the sample products of CNC manufacturing?

• Engine Block, Aircraft Turbine

• CNC Mold Making, Rapid Prototyping Products

• None of the above

• All of the above