1 / 21

Laser cutting system

Laser cutting system. Background. Laser cutting has been used in industry since the 1970's. The first common application was for sign-making, mainly cutting acrylic. It is now a significant process in every manufacturing economy. Introduction.

ajacobs
Télécharger la présentation

Laser cutting system

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Laser cutting system

  2. Background • Laser cutting has been used in industry since the 1970's. • The first common application was for sign-making, mainly cutting acrylic. • It is now a significant process in every manufacturing economy.

  3. Introduction • Laser cutting is a technology that uses a laser to cut precise patterns in most all types of materials such as metal, ceramic ,paper and so on.

  4. Introduction • There are two types of lasers used for cutting: • the gaseous CO2 laser • the solid-state Nd:YAG laser.

  5. Applications • Wood • Paper • Leather • Glass • Ceramic • Metal

  6. Benefits • The flexibility and precision cutting of simple or complex parts; • A non contact cut which means no marks or contamination of the material; • A high quality cut with no extra finishing required; • The ability to cut almost any material.

  7. Drawbacks • Material limitations (including crystalline and reflective materials) • Producing a piercing hole that can make the pattern design more difficult. • Reflected laser light can present a safety hazard • The cost of laser cutting machine is much higher than other cutting processes

  8. Components of System • Control Unit (CNC program) • Power supply (120 or 240 v) • Work piece positioning table • may be fixed or move in up to 2 directions • May contain fastening devices • scrap removal system • Optics Unit (focusing unit) • mirrors, focusing lens, • Fasteners • Gas/debris removal system

  9. Optical Unit • Mirrors direct the beam from the source down to the lens • the lens then focuses the beam into the desired geometry • finally the assist gas is added to remove the molten metal

  10. Capabilities • Materials • Steel, Titanium, Paper, Wood, Leather, Wax, Plastic, Fabric • Easily cuts .5 inch stainless steel • Limitations • Reflective materials, highly conductive • Many applications

  11. Examples Use • Hobby shop • Small production runs • Used for prototyping and hobbies • Generally use a Moving Optics configuration • Connected to fume hood for ventilation • May be home made

  12. Production Machine • Medium to large production runs • Used for producing production components • Can be one of all 3 configurations • Connected to fume hood for ventilation • Contain production line facilitators http://www.youtube.com/watch?v=80-ZIWDNfIE

  13. Processes and Practices • Laser Cutting Results • Majority of applications are in 2D • Extreme precision can be achieved • Capable of providing high tolerances and providing high quality surface finishes • Results on the Material • May affect hardness • Possible change in grain size • Narrow heat-affected zone

  14. Laser Applications • Laser Welding • More accurate, reliable and fast than traditional welding methods • Laser Marking • Similarly accurate, reliable and fast in comparison to traditional marking methods

  15. Current Uses of Laser Cutting Systems • Primarily 2D Systems • Either melts, burns, or vaporizes away material • Used to cut flat-sheet metal and piping/structural materials

  16. 3D Laser Cutting Applications • The future of laser cutting

  17. About 3D Laser Cutters • 6-axis rotary head to allow beveled and mitered cuts • Capable of cutting round, square, channel, angle and other structural shapes • Up to ¾” cut thickness • Industries Served • Automotive, industrial, electrical, constructions and aerospace

  18. Economics of Laser Cutters • High Initial Costs, some machines $300,000 + • Protective glass, gas nozzles, dust and particle filters need replacement • High use of cutting gasses 500-2000 L of O2 or N2 (.36 $/L)

  19. Efficient use of Laser Cutters is very material and application dependent • Initial startup costs are high, but the larger cost is the gas used to expel the material out of the cut • Creates very precise cuts with little to no finishing work required

  20. Safety Hazards • Contact with hot workpiece • Hand/eye contact with beam • Inhalation of fumes • Smoke, Fumes, dust particles have environmental risks

  21. 5 Words • Laser cutting - Laserski razrez • Crystal Line materiales - Kristalni materiali • Fasteners - Vijaki • Initial Costs - Začetni stroški • Vaporize away material- uparjevanje materiala stran

More Related