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DFM Analysis For Stereolithography
In design for additive manufacturing (DFAM), there are both broad themes (which apply to many additive manufacturing processes) and optimizations specific to a particular AM process. Described here is DFM analysis for stereolithography, in which design for manufacturability (DFM) considerations are applied in designing a part (or assembly) to be manufactured by the stereolithography (SLA) process. In SLA, parts are built from a photo curable liquid resin that cures when exposed to a laser beam that scans across the surface of the resin ( photopolymerization). Resins containing acrylate, epoxy, and urethane are typically used. Complex parts and assemblies can be directly made in one go, to a greater extent than in earlier forms of manufacturing such as casting, forming, metal fabrication, and machining. Realization of such a seamless process requires the designer to take in considerations of manufacturability of the part (or assembly) by the process. In any product design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLA Setup
SLA may refer to: Geography * Martín Miguel de Güemes International Airport, Salta, Argentina, IATA code Science and engineering * Sealed lead-acid battery * Second-language acquisition * Short long arms suspension, in vehicles * Soluble liver antigen or O-phosphoseryl-tRNA(Sec) selenium transferase, an enzyme * Spacecraft Lunar Module Adapter, part of Apollo/Saturn S-IVB * Specific leaf area, ratio of leaf area to dry mass on a plant * Stereo lithographic apparatus, a 3D printing technology Organizations * Science Leadership Academy, Philadelphia, Pennsylvania, US * School Library Association * Sindhi Language Authority, Pakistan * Sindhudesh Liberation Army, a separatist organisation in Pakistan * Singapore Land Authority * South Lebanon Army, Lebanese Civil War militia * Special Libraries Association, for librarians * Sri Lanka Army * State Liquor Authority, New York, US * Sudan Liberation Movement/Army, a rebel group in Darfur * Symbionese Liberation Army, 1970s U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casting
Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a ''casting'', which is ejected or broken out of the mold to complete the process. Casting materials are usually metals or various ''time setting'' materials that cure after mixing two or more components together; examples are epoxy, concrete, plaster and clay. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods. Heavy equipment like machine tool beds, ships' propellers, etc. can be cast easily in the required size, rather than fabricating by joining several small pieces. Casting is a 7,000-year-old process. The oldest surviving casting is a copper frog from 3200 BC. History Throughout history, metal casting has been used to make tools, weapons, and religious objects. Metal casting history and de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthony Michell
Anthony George Maldon Michell FRS (21 June 1870 – 17 February 1959) was an Australian mechanical engineer of the early 20th century. Early life Michell was born in London while his parents were on a visit to England from Australia to which they had emigrated 17 years earlier. The family returned to Maldon, Victoria, in 1872, where young Anthony attended one of the state primary schools newly established in that area. He later returned to England and attended the Perse Grammar School while his elder brother, John Henry, attended Trinity College, Cambridge. On leaving school, A.G.M. Michell matriculated and spent one year as a non-collegiate student at Cambridge. In 1889, he returned to Australia and studied civil engineering at the University of Melbourne, graduating in 1895. For the next two years he obtained practical experience in structural engineering with the firm Johns and Waygood. He then returned to University, and completed a Master of Civil Engineering degree in 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feature Recognition
The term "feature" implies different meanings in different engineering disciplines. This has resulted in many ambiguous definitions for feature. A feature, in computer-aided design (CAD), usually refers to a region of a part with some interesting geometric or topological properties.Pratt M.J. and Wilson P.R., 1985, Requirements for support of form features in a solid modeling system, ''CAM-I'', R-85-ASPP-01 These are more precisely called form features. Form features contain both shape information and parametric information of a region of interest. They are now ubiquitous in most current CAD software, where they are used as the primary means of creating 3D geometric models. Examples of form features are extruded boss, loft, etc. Form feature is not the only type of feature that is discussed in CAD literature. Sometimes a part's functional or manufacturing features of the subject of attention.Regli W.C., 1995, Geometric algorithms for recognition of features from solid models, PhD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Prototyping
Rapid prototyping is a group of techniques used to quickly fabricate a scale model of a physical part or assembly using three-dimensional computer aided design (CAD) data. Construction of the part or assembly is usually done using 3D printing or "additive layer manufacturing" technology. The first methods for rapid prototyping became available in the mid 1987 and were used to produce models and prototype parts. Today, they are used for a wide range of applications and are used to manufacture production-quality parts in relatively small numbers if desired without the typical unfavorable short-run economics. This economy has encouraged online service bureaus. Historical surveys of RP technology start with discussions of simulacra production techniques used by 19th-century sculptors. Some modern sculptors use the progeny technology to produce exhibitions and various objects. The ability to reproduce designs from a dataset has given rise to issues of rights, as it is now possibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orientation In SLA
Orientation may refer to: Positioning in physical space * Map orientation, the relationship between directions on a map and compass directions * Orientation (housing), the position of a building with respect to the sun, a concept in building design * Orientation of churches, the architectural feature of facing ("orienting"), churches towards the east (Latin: oriens) * Coin orientation, a description of the orientation of opposite faces of a coin with respect to one another * Page orientation, the way in which a rectangular page is oriented for normal viewing * In Animal navigation, turning the body to a desired heading, e.g. in the correct direction of migration * Orientation (sign language), the orientation of the hands when signing Arts and media * ''Orientation'' (EP), a 2001 album by Sonata Arctica * ''Orientation'' (film), a 1996 short film produced by the Church of Scientology * "Orientation" (''Lost''), a 2005 episode of American television series ''Lost'' * "Ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
