Remake 3d Printers
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- Words: 837
- Pages: 7
2009
This Document is a property of “ACCESSINA” The company was established on 20th Feb 2009 and the founders of the company are Abhishek Jain(y05uc003) Pradeep Chabaria Shilpa Gautam(y05uc102)
3D Printers: An Emerging Technology
Table of Contents Abstract Acknowledgement Introduction Comparison Financial Plan Future Plans / Conclusion
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ABSTRACT
Originally developed at the Massachusetts Institute of Technology (MIT) in 1993, ThreeDimensional Printing technology (3DP™) forms the basis of ACCESSINA’s prototyping process. Once upon a time, the only way to make a three-dimensional object was by hand. One could carve wood or bone, shape clay, blow glass, and pound metal into shape, but now by taking symbolic representation of object a 3D printer can build a fullsize, physical model that can be held and manipulated, help the designer to better understand the strengths and limitations of His/her design. By definition 3D Printing is an extremely versatile and rapid process accommodating geometry of varying complexity in hundreds of different applications, and supporting many types of materials. ACCESSINA trying to pioneer the commercial use of 3DP technology, developing 3D printers that will lead manufacturers use to produce early concept models and product prototypes. This paper describes the core technology and other related things about 3D printing.
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Acknowledgement
3D PRINTING
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Introduction: ACCESSINA’s 3D printers use standard inkjet printing technology to create parts layerby-layer by depositing a liquid binder onto thin layers of powder. Instead of feeding paper under the print heads like a 2D printer, upon which it prints the cross-sectional data sent from the software. Our system requires powder to be distributed accurately and evenly across the build platform. 3D Printers accomplish this task by using a feed piston and platform, which rises incrementally for each layer. A roller mechanism spreads powder fed from the feed piston onto the build platform; intentionally spreading approximately 30 percent of extra powder per layer to ensure a full layer of densely packed powder on the build platform. The excess powder falls down an overflow chute, into a container for reuse in the next build.
Fig1: Spreading a layer of powder
Once the layer of powder is spread, the inkjet print heads print the cross-sectional area for the first, or bottom slice of the part onto the smooth layer of powder, binding the powder together. A piston then lowers the build platform 0.1016mm (0.004”), and a new layer of powder is spread on top. The print heads apply the data for the next cross section onto the new layer, which binds itself to the previous layer. Printer repeats this process for all of the layers of the part. The 3D printing process creates an exact physical model of the geometry represented by 3Ddata. Process time depends on the height of the part or parts being built. Typically, ACCESSINA.’s 3D printers will be able to build at a vertical rate of 25mm – 50mm (1” – 2”) per hour.
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Fig2: Printing Cross Section
When the 3D printing process completes, loose powder surrounds and supports the part in the build chamber. Users can remove the part from the build chamber after the materials have had time to set, and return unprinted, loose powder back to the feed platform for reuse. Users then use forced air to blow the excess powder off the printed part, a short process which takes less than 10 minutes. Inkjet technology does not require the use of solid or attached supports during the printing process, and all unused material is reusable. There are many companies producing 3D-Printers but why ACCESSINA’S printing model is better than others is illustrated below.
Comparison:
1) Fast printing: The Inkjet technology allows printing of multiple parts simultaneously, while only adding a negligible amount of time to the print time for one part. 2) Produces Colored Models: ACCESSINA applies the proven 2D color inkjet methodology to 3D printing and produces the only 3D printers with 24-bit, full-color capabilities. Our 3D printers use four colored binders’ cyan, magenta, yellow and clear, to print colors onto the shell of the part 3) Produces high resolution model: ACCESSINA’s printers produce high- resolution 3D printing. Our 3D printers control the print head movement while positioned extremely close to the powder, reducing inaccuracies related to fanning of the binder spray. 4) It is Affordable: ACCESSINA’s 3D printers produce very little waste. The unprinted powder surrounds and supports complex parts during printing. Users can reuse all unused support powder. Thus, printed-part volume becomes the basis for all partcreation costs. Other additive processes require the building of solid support structures to support complex geometries during the printing process. Users have to discard these support structures after use, and the wasted material contributes significantly to the cost of additive technologies.
Financial Plan: Use of the money invested by the investor (“10 million dollars”):
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The plan shows the percentage distribution of money into various sectors for the better understanding. Consider 10 million dollars as 100% and division will be made on basis of this. 1) Infrastructure:
7
This Document is a property of “ACCESSINA” The company was established on 20th Feb 2009 and the founders of the company are Abhishek Jain(y05uc003) Pradeep Chabaria Shilpa Gautam(y05uc102)
3D Printers: An Emerging Technology
Table of Contents Abstract Acknowledgement Introduction Comparison Financial Plan Future Plans / Conclusion
2
3
4
5
6
7
8
ABSTRACT
Originally developed at the Massachusetts Institute of Technology (MIT) in 1993, ThreeDimensional Printing technology (3DP™) forms the basis of ACCESSINA’s prototyping process. Once upon a time, the only way to make a three-dimensional object was by hand. One could carve wood or bone, shape clay, blow glass, and pound metal into shape, but now by taking symbolic representation of object a 3D printer can build a fullsize, physical model that can be held and manipulated, help the designer to better understand the strengths and limitations of His/her design. By definition 3D Printing is an extremely versatile and rapid process accommodating geometry of varying complexity in hundreds of different applications, and supporting many types of materials. ACCESSINA trying to pioneer the commercial use of 3DP technology, developing 3D printers that will lead manufacturers use to produce early concept models and product prototypes. This paper describes the core technology and other related things about 3D printing.
3
Acknowledgement
3D PRINTING
4
Introduction: ACCESSINA’s 3D printers use standard inkjet printing technology to create parts layerby-layer by depositing a liquid binder onto thin layers of powder. Instead of feeding paper under the print heads like a 2D printer, upon which it prints the cross-sectional data sent from the software. Our system requires powder to be distributed accurately and evenly across the build platform. 3D Printers accomplish this task by using a feed piston and platform, which rises incrementally for each layer. A roller mechanism spreads powder fed from the feed piston onto the build platform; intentionally spreading approximately 30 percent of extra powder per layer to ensure a full layer of densely packed powder on the build platform. The excess powder falls down an overflow chute, into a container for reuse in the next build.
Fig1: Spreading a layer of powder
Once the layer of powder is spread, the inkjet print heads print the cross-sectional area for the first, or bottom slice of the part onto the smooth layer of powder, binding the powder together. A piston then lowers the build platform 0.1016mm (0.004”), and a new layer of powder is spread on top. The print heads apply the data for the next cross section onto the new layer, which binds itself to the previous layer. Printer repeats this process for all of the layers of the part. The 3D printing process creates an exact physical model of the geometry represented by 3Ddata. Process time depends on the height of the part or parts being built. Typically, ACCESSINA.’s 3D printers will be able to build at a vertical rate of 25mm – 50mm (1” – 2”) per hour.
5
Fig2: Printing Cross Section
When the 3D printing process completes, loose powder surrounds and supports the part in the build chamber. Users can remove the part from the build chamber after the materials have had time to set, and return unprinted, loose powder back to the feed platform for reuse. Users then use forced air to blow the excess powder off the printed part, a short process which takes less than 10 minutes. Inkjet technology does not require the use of solid or attached supports during the printing process, and all unused material is reusable. There are many companies producing 3D-Printers but why ACCESSINA’S printing model is better than others is illustrated below.
Comparison:
1) Fast printing: The Inkjet technology allows printing of multiple parts simultaneously, while only adding a negligible amount of time to the print time for one part. 2) Produces Colored Models: ACCESSINA applies the proven 2D color inkjet methodology to 3D printing and produces the only 3D printers with 24-bit, full-color capabilities. Our 3D printers use four colored binders’ cyan, magenta, yellow and clear, to print colors onto the shell of the part 3) Produces high resolution model: ACCESSINA’s printers produce high- resolution 3D printing. Our 3D printers control the print head movement while positioned extremely close to the powder, reducing inaccuracies related to fanning of the binder spray. 4) It is Affordable: ACCESSINA’s 3D printers produce very little waste. The unprinted powder surrounds and supports complex parts during printing. Users can reuse all unused support powder. Thus, printed-part volume becomes the basis for all partcreation costs. Other additive processes require the building of solid support structures to support complex geometries during the printing process. Users have to discard these support structures after use, and the wasted material contributes significantly to the cost of additive technologies.
Financial Plan: Use of the money invested by the investor (“10 million dollars”):
6
The plan shows the percentage distribution of money into various sectors for the better understanding. Consider 10 million dollars as 100% and division will be made on basis of this. 1) Infrastructure:
7
