Mini CNC - Arduino nano
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CNC (Computer Numerical Control) machines use a computer to convert a design into numerical coordinates that control motors to precisely cut and shape materials. The document traces the history of CNC from prototypes in 1949 to widespread commercial use today. It describes how CNC machines increase production speed and quality while lowering costs by manufacturing complex parts identically. The mini CNC machine discussed uses an Arduino microcontroller to control servo motors via motor drivers, allowing it to drill drawings onto wood according to programmed computer designs.
Mini CNC - Arduino nano
- 1. MINI CNC MACHINE S U B M I T T E D BY : S R I N U
- 2. MEANING OF ‘CNC’ • CNC means Computer Numerical Control. This means a computer converts the design into numbers which the computer uses to control the cutting and shaping of the material.
- 3. HISTORY OF CNC • 1949:US Air Force asks MIT to develop a "numerically controlled" machine. • 1952:Prototype NC machine demonstrated (punched tape input). • 1980:CNC machines (computer used to link directly to controller) • 1990:DNC: external computer “drip feeds” control programmer to machine tool controller
- 4. WHY USE CNC MACHINES? • Increase production throughput • Improve the quality and accuracy of manufactured parts • Stabilize manufacturing costs • Manufacture complex or otherwise impossible jobs -2D and 3D contours
- 5. CNC MACHINE - INPUT, PROCESS, OUTPUTA Computer: The computer is used to draw the design. However, the design is only a picture and the CNC machine cannot use this to manufacture the product. The computer software must also convert the drawing into numbers (coordinates) that the CNC machine can use when it starts to cut and shape the material. An Interface: A computer cannot be directly connected to a CNC machine. The computer is connected to an interface. This converts the signals from computer to a form that the CNC machine understands. The signals are in the form of digital signals when they are sent to the CNC machine. CNC (Computer Numerical Control) Machine: The signals from the interface control the motors on the CNC machine. The signals determine the way the vice moves. The vice moves in three directions X, Y and Z. (Horizontally, vertically and depth). The signals control the speed of the cutting tool.
- 6. PARTS OF MINI CNC • Arduino microcontroller • Motor drivers • Power supply • Servo motors • Dvd motor frames
- 7. ARDUINO NANO
- 8. OTHER PARTS Servo motor Motor Driver x 2 Dvd Writers x 2
- 10. ADVANTAGES CNC machines can be used continuously 24 hours a day, 365 days a year and only need to be switched off for occasional maintenance. CNC machines are programmed with a design which can then be manufactured hundreds or even thousands of times. Each manufactured product will be exactly the same. Less skilled/trained people can operate CNC’s unlike manual lathes / milling machines etc... Which need skilled engineers? CNC machines can be updated by improving the software used to drive the machines
- 11. DISADVANTAGES CNC machines are more expensive than manually operated machines, although costs are slowly coming down. The CNC machine operator only needs basic training and skills, enough to supervise several machines. In years gone by, engineers needed years of training to operate centre lathes, milling machines and other manually operated machines. This means many of the old skills are been lost.
- 12. CONCLUSION • Cnc mean computer numerical control machine it’s a form of programmable automation drill drawings on wood use g coding consist of 3 motors and their drivers and pic with its basic circuit and body made of wood hold on motors and drill and the wood we want to draw on it • We tried to make cheap fast safety cnc machine that drill on wood piece according to any drawing we draw to it.