Numerical control has been used in industry for more than 50 years. Simply pu
t Numerical control is a method of automatic operating a manufacturing machine based on code of letters, neumbers and characteristics. A complete set of coded instruction for executing an operation is called a program. The program is translated into corresponding electrical signals for input to motors that run the machine. Numerical control machine can be program manually.
Traditionally, numerical control systems have been composed of the following components.
Tape Punch- Converts written instructions into a corresponding whole pattern. The hole is punched into a tape, which pass through this device. Much older units used a type writer device called flexowriter. Later devices included a microcomputer coupled with a tape punch unit.
Tape Reader- Read the whole pattern on the tape and converts the pattern to a corresponding electrical signal code.
Controller- Receives the electrical signals from the tape reader and subsequently causes the NC machine to respond.
NC Machine- Responded the programmed signals from the controller. Accordingly, the machine executes the required motions to manufacturing a part (Spindle rotation on/off or spindle movement along programmed axis direction etc.)
Advantages of NC system over manual methods of production
NC system offers some of the following advantages over manual methods of production
t Numerical control is a method of automatic operating a manufacturing machine based on code of letters, neumbers and characteristics. A complete set of coded instruction for executing an operation is called a program. The program is translated into corresponding electrical signals for input to motors that run the machine. Numerical control machine can be program manually.Traditionally, numerical control systems have been composed of the following components.
Tape Punch- Converts written instructions into a corresponding whole pattern. The hole is punched into a tape, which pass through this device. Much older units used a type writer device called flexowriter. Later devices included a microcomputer coupled with a tape punch unit.
Tape Reader- Read the whole pattern on the tape and converts the pattern to a corresponding electrical signal code.
Controller- Receives the electrical signals from the tape reader and subsequently causes the NC machine to respond.
NC Machine- Responded the programmed signals from the controller. Accordingly, the machine executes the required motions to manufacturing a part (Spindle rotation on/off or spindle movement along programmed axis direction etc.)
Advantages of NC system over manual methods of production
NC system offers some of the following advantages over manual methods of production
- Better control of tool motion under optimum cutting conditions
- Improved part quality and repeatability
- Reduced time to manufacture parts
- Reuced scrap
- Better production planning and placement of machining operations in the hands of engineers
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