Numerical Control (NC) and CNC Quiz

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Questions and Answers

What is the definition of Numerical Control (NC)?

  • A system where actions are controlled by physical switches
  • A system where actions are controlled by the direct insertion of numerical data (correct)
  • A system where actions are controlled by voice commands
  • A system where actions are controlled by manual input

In CNC, where are the instructions stored?

  • In a mainframe computer at the facility
  • In a separate storage unit at the facility
  • In a cloud-based storage system
  • In a micro-computer attached to the machine (correct)

What type of codes control how CNC machines operate?

  • Alphanumeric codes
  • Binary codes
  • Hexadecimal codes
  • G and M codes (correct)

What is Direct Numerical Control (DNC)?

<p>A set of NC machines connected to a main computer system (A)</p> Signup and view all the answers

What is one of the advantages of CNC?

<p>Increased productivity (D)</p> Signup and view all the answers

What are the three basic components of an operational NC system?

<p>Programme of instruction, machine control unit, machine tool (D)</p> Signup and view all the answers

What is the difference between NC and CNC?

<p>CNC instructions are stored as a program in a micro-computer attached to the machine, while NC doesn't involve a micro-computer (C)</p> Signup and view all the answers

What does Direct Numerical Control (DNC) involve?

<p>Establishing a direct interface between the DNC computer memory and the machine tools (C)</p> Signup and view all the answers

What controls how CNC machines operate?

<p>G and M codes, which are number values and coordinates assigned to particular operations (D)</p> Signup and view all the answers

How does CNC contribute to increased productivity?

<p>By handling much of the control logic of the machine through a micro-computer program (A)</p> Signup and view all the answers

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Study Notes

Numerical Control (NC)

  • Numerical Control (NC) refers to the automation of machine tools through the use of numerical data.

CNC Machines

  • In CNC, instructions are stored in the computer's memory.
  • CNC machines operate based on coded instructions that control their movements.

Types of Codes

  • CNC machines operate using G-codes and M-codes, which control their movements and actions.

Direct Numerical Control (DNC)

  • Direct Numerical Control (DNC) involves direct connection of multiple CNC machines to a central computer, allowing for simultaneous control.

Advantages of CNC

  • One of the advantages of CNC is increased productivity due to the ability to automate repetitive tasks.

Basic Components of NC System

  • The three basic components of an operational NC system are a machine tool, a control system, and a data input device.

NC vs CNC

  • The key difference between NC and CNC is that NC systems use a fixed, punched tape to store instructions, while CNC systems use a computer to store and execute instructions.

Direct Numerical Control (DNC)

  • Direct Numerical Control (DNC) involves direct connection of CNC machines to a central computer, allowing for simultaneous control and monitoring.

Control of CNC Machines

  • CNC machines operate based on coded instructions that control their movements and actions.

Contribution to Productivity

  • CNC contributes to increased productivity by automating repetitive tasks, reducing human error, and improving accuracy.

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