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Simple CNC machine

Simple CNC machine. Students:. Mahmood Yunis. Shadi Tahseen Hanani. What is CNC.

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Simple CNC machine

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  1. Simple CNC machine Students: Mahmood Yunis Shadi Tahseen Hanani

  2. What is CNC • In general CNC (Computer Numeric Controls) an advanced manufacturing technique that integrates computers and metalworking tools. Using CNC, an operator can create complex 3-D designs on a computer in a language called G-code.

  3. Usage • CNC machines have a lot of types ,shapes and purposes. • No one can inclose all CNC purposes because its widely used in any manufacturing field. • Some of its common uses : Cutting, milling, drilling and plotting ,etc…

  4. Our machine • To avoid mechanic difficulty We choose plotting operation to simulate other processes such as cutting.

  5. Compatibility • Our machine understand G-code language which is commonly used in CNC’s World. • Advantages: • benefit by existent smart algorithms that generate G-code for any complex computer shapes .

  6. HW & SW • Hardware : • Pic 16F877 controller. • Stepper motors and electrical movablearm • Driver circuit for steppers H-bridges, MOS-FET and other components. • Serial communication interface.

  7. Cont.. • Controller side software: • We write PICC code to control the machine motion and pens. • we use XY-interpolation to generate best sequence of x-y steps. • The interpolation basically handle linear and circular motion.

  8. Software • Computer side software: • C# application with simple and easy to use interface. • The main important process is to open G-code file and send it serially to the machine. • Other processes: • edit G-code file ,serial synchronization. • View G-code file as image.

  9. PIC side Block diagram Start Polling serial Manual controlling Receive file Circular interpolation Linear interpolation Move pens

  10. PC side Block diagram Start Open G-code file Open Communication Edit file Scaling, rotation Send file

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