Cnc technology yani punye

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Cnc technology yani punye

  1. 1. CNCTECHNOLOGY 1
  2. 2. INTRODUCTION TO CNC 2
  3. 3. DEFINITION C N CComputer Numerical Control 3
  4. 4. CNC TECHNOLOGY• The CNC stands for Computer Numerical Control• Instructions are stored as a program in micro-computer attached to the machine.• Refers to a computer controller that controls the movement of every axis of the machine• Using G and M codes instructions• Drives the spindle or machine tool into a raw material to fabricate or to remove the unwanted material from work piece more accurately without human intervention.• The computer will also handle much of the controllogic of the machine, making it more adaptable than earlier hard- wired controllers. 4
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  7. 7. HISTORYThe birth of NC is generally credited to John T. Parsons, amachinist and salesman at his fathers machining company,Parsons Corp.1949US Air Force asks MIT to develop a "numerically controlled"machine that are programmable milling machine.1947Using punched cards he was able to control the position of amachine in an attempt to machine helicopter blade.1952Prototype NC machine demonstrated (punched tape input) 7
  8. 8. HISTORY1959Machining centers and turning centers that could performmultiple machining processes was developed.1980-CNC machines (computer used to link directly to controller)1990-DNC: external computer “drip feeds” control programmer tomachine tool controllerModern NC machine has a computer on board, ComputerNumerical Control (CNC). They can run unattended at over20,000 rpm (spindler speed) with a feed rate of over 600 ipmand an accuracy of .0001.. 8
  9. 9. NC• A control system which primarily processes numeric input.• Limited programming capability at the machine tool.• Limited logic beyond direct input.• These types of systems are referred to as “hardwire controls” and were popular from the 1950’s to 1970’s. 9
  10. 10. NC 10
  11. 11. CNC• A numerical control system in which the data handling, control sequences, and response to input is determined by an on-board computer system at the machine tool. 11
  12. 12. CNC 12
  13. 13. CNC APPLICATIONSTo manufacture complex curved geometries in 2Dor 3D was extremely expensive by mechanicalmeans (which usually would require complex jigs tocontrol the cutter motions)Machining components with repeatable accuracyUnmanned machining operations 13
  14. 14. CNC APPLICATIONSMachining• 2.5D / 3D• Turning : Lathes, Turning Centre• Milling : Machining Centres 14
  15. 15. CNC APPLICATIONSForming• 2D• 3D• Plasma & Laser Cutting• Blanking, Nibbling & Punching• Rapid Prototyping 15
  16. 16. TYPES OFCNC MACHINES 16
  17. 17. CNC Turning 17
  18. 18. CNC Turning with Slant Bed 18
  19. 19. CNC Milling 19
  20. 20. CNC Machining Center Horizontal Axis 20
  21. 21. CNC Coordinate Measuring 21
  22. 22. CNC EDM Wire Cut 22
  23. 23. CNC Laser Cutting 23
  24. 24. CNC Plasma Cutting 24
  25. 25. CNC Press 25
  26. 26. CNC Rapid Prototyping 26
  27. 27. INDUSTRIES MOST AFFECTED & SAMPLE PRODUCTS OF CNC MANUFACTURING 27
  28. 28. AUTOMOTIVE INDUSTRY Engine Block 28
  29. 29. AUTOMOTIVE INDUSTRY Different Products 29
  30. 30. AEROSPACE INDUSTRY Aircraft Turbine 30
  31. 31. MOLD MAKING Body Parts 31
  32. 32. ELECTRONIC INDUSTRY Telecomunication 32
  33. 33. RAPID PROTOTYPING PRODUCTS 33

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