Curriculum
Industry 4.0 – Automation & Applications in Mechanical Engineering
Introduction - Industry 4.0 - Automation & Application
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Robotics in Mechanical Engineering
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Numerical Control of Machine Tools
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Numerical Control of Machine Tools
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CNC - Computer Numerical Control System
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Components of CNCs
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Point to Point CNC Machines
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Incremental & Absolute CNC Machines
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Open & Close Control Loop CNC Machines
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2 and 3 Axes CNC Machines
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Importance of Higher Axes Machining
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Programming Format
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A Simple Coding Exercise
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Applications of CNC Machines
Additive Manufacturing (3D Printing)
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Programming Format
Word address is the most common programming format used for CNC programming systems. This format contains a large number of different codes that transfers program information from the part print to machine servos, relays, micro switches etc. to manufacture the part. These codes are in a logical sequence called block of information. Each block should contain enough information to perform one machining operation.
Every program in any part to be machined must be put in a format that the MCU can understand. The format used on any CNC is built in by the machine tool builder and is based on the type of control unit on the machine. A variable-block format which uses letters is most commonly used. Numerical data follows this address to identify a specific function such as distance, feed rate, or speed value.
The most common codes used for programming CNC machine tools are G-Codes & M-Codes. G codes are for preparatory functions & M codes are for miscellaneous functions. Other codes such as F, S, D & T are used for machine functions such as feed, speed, cutter diameter offset, tool number etc.
