Chuck Hull (Charles W. Hull; born May 12, 1939) is the co-founder, executive vice president and chief technology officer of 3D Systems. Events 1191 - Richard I of England marries Berengaria of Navarre. Year 1939 ( MCMXXXIX) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar. A chief technical officer or chief technology officer (abbreviated as CTO) is an executive position whose holder is focused on scientific and technical issues within 3D Systems, headquartered in Rock Hill South Carolina, is a maker of Rapid prototyping machines notable for developing Stereolithography and the He is the inventor of the solid imaging process known as stereolithography, the first commercial rapid prototyping technology, and the STL file format. Stereolithography is a common Rapid manufacturing and Rapid prototyping technology for producing parts with high accuracy and good surface finish Rapid (or throwaway Software prototyping also describes a practice in the Software development process or application development process and sometimes refers STL is a file format native to the Stereolithography CAD software created by 3D Systems. He is the inventor on more than 60 U.S. patents as well as other patents around the world in the fields of ion optics and rapid prototyping. An inventor is a person who creates or discovers a new method form device or other useful means United States patent law was established "to promote the Progress of Science and useful Arts by securing for limited Times to Authors and Inventors the exclusive Right to their respective Ion optics involves the focusing of plasmas and Ion streams usually in Mass spectrometry. Rapid (or throwaway Software prototyping also describes a practice in the Software development process or application development process and sometimes refers
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Beginnings of stereolithography
Hull coined the term “stereolithography” in his U.S. Patent 4,575,330, entitled “Apparatus for Production of Three-Dimensional Objects by Stereolithography” issued on March 11, 1986. Stereolithography is a common Rapid manufacturing and Rapid prototyping technology for producing parts with high accuracy and good surface finish United States patent law was established "to promote the Progress of Science and useful Arts by securing for limited Times to Authors and Inventors the exclusive Right to their respective He defined stereolithography as a method and apparatus for making solid objects by successively “printing” thin layers of the ultraviolet curable material one on top of the other. Stereolithography is a common Rapid manufacturing and Rapid prototyping technology for producing parts with high accuracy and good surface finish [1]
In Hull’s patent, a concentrated beam of ultraviolet light is focused onto the surface of a vat filled with liquid photopolymer. A photopolymer is a Thermosetting --> Polymer that cures or becomes solid when exposed to light often in the Ultraviolet spectrum The light beam, moving under computer control, draws each layer of the object onto the surface of the liquid. Wherever the beam strikes the surface, the photopolymer polymerizes/crosslinks and changes to a solid. An advanced CAD/CAM/CAE software mathematically slices the computer model of the object into a large number of thin layers. The process then builds the object layer by layer starting with the bottom layer, on an elevator that is lowered slightly after solidification of each layer. [2]
Commercial rapid prototyping
In 1986, commercial rapid prototyping was started by Hull when he founded 3D Systems in Valencia, CA. Rapid (or throwaway Software prototyping also describes a practice in the Software development process or application development process and sometimes refers 3D Systems, headquartered in Rock Hill South Carolina, is a maker of Rapid prototyping machines notable for developing Stereolithography and the Valencia is a Planned community located in Los Angeles County California in the northwestern corner of the Santa Clarita Valley, adjacent to Hull realized that his concept was not limited to liquids and therefore gave it the generic name “stereolithography” (3D printing), and filed broad patent claims covering any “material capable of solidification” or “material capable of altering its physical state. Stereolithography is a common Rapid manufacturing and Rapid prototyping technology for producing parts with high accuracy and good surface finish 3D printing is a category of Rapid prototyping technology A three dimensional object is created by layering and connecting successive cross sections of material ”
Hull built up a patent portfolio covering many fundamental aspects of today’s additive manufacturing technologies such as data preparation via triangulated models (STL file format) and slicing, and many exposure strategies such as alternating hatch directions. Additive Manufacturing is the process of making a Product by adding Layers in a relatively efficient way such that there is little waste or reduction of materials STL is a file format native to the Stereolithography CAD software created by 3D Systems. [3]
References
- ^ U. S. Patent 4,575,330 (“Apparatus for Production of Three-Dimensional Objects by Stereolithography”)
- ^ Stereolithography
- ^ Microsoft Word - LANE-2004-EOS-DMLS.doc
See also
3D Systems, headquartered in Rock Hill South Carolina, is a maker of Rapid prototyping machines notable for developing Stereolithography and the Stereolithography is a common Rapid manufacturing and Rapid prototyping technology for producing parts with high accuracy and good surface finish Rapid (or throwaway Software prototyping also describes a practice in the Software development process or application development process and sometimes refers STL is a file format native to the Stereolithography CAD software created by 3D Systems.Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic