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CAD Standards
CAD standards are a set of guidelines for the appearance of computer-aided design (CAD) drawings to improve productivity and interchange of CAD documents between different offices and CAD programs, especially in architecture and engineering. Architecture standards CAD layer standards Most common: *'' BS 1192'', which relies heavily on the Code of Procedure for the Construction Industry *''AIA Cad Layer Guidelines'', 2nd edition (1997), has great usage in the USA; *'' ISO 13567-1/3'', International standard, common in Northern Europe; *AEC (UK)', an adaptation of BS-1192 based on Uniclass. *''A/E/C CAD Standard, Tri-service (USACE/Air Force/NAVFAC) CAD standard created/maintained by the CAD/BIM Technology Center for Facilities, Infrastructure, and Environment... July 2009. * (1996), Swiss standard for engineers and architec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer-aided Design
Computer-aided design (CAD) is the use of computers (or ) to aid in the creation, modification, analysis, or optimization of a design. This software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing. Designs made through CAD software help protect products and inventions when used in patent applications. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. The terms computer-aided drafting (CAD) and computer-aided design and drafting (CADD) are also used. Its use in designing electronic systems is known as ''electronic design automation'' (''EDA''). In mechanical design it is known as ''mechanical design automation'' (''MDA''), which includes the process of creating a technical drawing with the use of computer software. CAD software for mechanical design uses either vector-based graphics to depict t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
:Category:CAD File Formats
{{Commons category, CAD file formats Other formats possibly not yet written: * STEP - international standard for product data exchange (ISO_10303) * G - BRL-CAD standard solid modeling open format including support for primitives, attributes, and arbitrary data storage See also: *Computer-aided design *CAD data exchange * Comparison of CAD, CAM and CAE file viewers *Electronic design automation Electronic design automation (EDA), also referred to as electronic computer-aided design (ECAD), is a category of software tools for designing Electronics, electronic systems such as integrated circuits and printed circuit boards. The tools wo ... Computer-aided design Computer file formats Vector graphics file formats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAD File Formats
Computer-aided design (CAD) is the use of computers (or ) to aid in the creation, modification, analysis, or optimization of a design. This software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing. Designs made through CAD software help protect products and inventions when used in patent applications. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. The terms computer-aided drafting (CAD) and computer-aided design and drafting (CADD) are also used. Its use in designing electronic systems is known as ''electronic design automation'' (''EDA''). In mechanical design it is known as ''mechanical design automation'' (''MDA''), which includes the process of creating a technical drawing with the use of computer software. CAD software for mechanical design uses either Vector graphics, vector-based graph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical Lettering
Technical lettering is the process of forming letters, numerals, and other characters in technical drawing. It is used to describe, or provide detailed specifications for, an object. With the goals of legibility and uniformity, styles are standardized and lettering ability has little relationship to normal writing ability. Engineering drawings use a Gothic sans-serif script, formed by a series of short strokes. Lower case letters are rare in most drawings of machines. Methods of forming letters ''Freehand lettering'' is done without the assistance of tools. To regulate lettering height, commonly 3 mm (-in), guidelines are drawn. ''Mechanical lettering'' is done using tools such as lettering guides, templates, or using a small mechanical pantograph referred to by the Keuffel and Esser trademark "Leroy" Modern drawings are lettered with computer-aided design software. Freehand lettering The letters to be drawn, though freehanded, should be stable and graceful. In some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Military Standard
A United States defense standard, often called a military standard, "MIL-STD", "MIL-SPEC", or (informally) "MilSpecs", is used to help achieve standardization objectives by the United States Department of Defense. Standardization is beneficial in achieving interoperability, ensuring products meet certain requirements, commonality, reliability, total cost of ownership, compatibility with logistics systems, and similar defense-related objectives. Defense standards are also used by other non-defense government organizations, technical organizations, and industry. This article discusses definitions, history, and usage of defense standards. Related documents, such as defense handbooks and defense specifications, are also addressed. Definition of document types Although the official definitions differentiate between several types of documents, all of these documents go by the general rubric of "military standard", including defense specifications, handbooks, and standards. Str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IGES
The Initial Graphics Exchange Specification (IGES) is a vendor-neutral List of file formats, file format that allows the CAD data exchange, digital exchange of information among computer-aided design (CAD) systems. It is an ASCII-based textual format. The official title of IGES is ''Digital Representation for Communication of Product Definition Data'', first published in March, 1980 by the U.S. National Bureau of Standards as NBSIR 80-1978. Many documents (like early versions of the Defense Standards MIL-PRF-28000 and MIL-STD-1840) referred to it as American Society of Mechanical Engineers, ASME Y14.26M, the designation of the ANSI committee that approved IGES Version 1.0. Using IGES, a CAD user can exchange product data models in the form of circuit diagrams, wire frame model, wireframe, freeform surface modelling, freeform surface, Boundary representation, boundary (B-rep) or solid modeling (CSG) Representation (arts), representations. Applications supported by IGES include tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 128
ISO 128 is an international standard (ISO), about the general principles of presentation in technical drawings, specifically the graphical representation of objects on technical drawings.ISO 128-1:2003 Abstract Accessed 1 March 2009. Overview Since 2003 the ISO 128 standard contains fifteen parts, which were initiated between 1996 and 2003. It starts with a summary of the general rules for the execution and structure of technical drawings. Further it describes basic conventions for lines, views, cuts and[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uniclass
''Uniclass 2015'' is a unified classification system for all sectors of the UK construction industry. It contains consistent tables classifying items of all scales, from entire systems such as a railway to individual product items such as anchor plates, flue liners or LED lamps. Originally released in 1997, Uniclass allowed project information to be structured to a recognised standard. The original version was later heavily revised, to make it more suitable for use with modern construction industry practice, and to make it compatible with Building information modeling (BIM) processes. History Uniclass was created in 1997 by the Construction Project Information Committee (CPIC), a UK industry organisation with representatives from key institutions including the Royal Institute of British Architects and the Royal Institution of Chartered Surveyors. A voluntary standard classification system for the construction industry, it was intended to help organise information throughout desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Based Definition
Model-based definition (MBD), sometimes called digital product definition (DPD), is the practice of using 3D models (such as solid models, 3D PMI and associated metadata) within 3D CAD software to define (provide specifications for) individual components and product assemblies. The types of information included are geometric dimensioning and tolerancing (GD&T), component level materials, assembly level bills of materials, engineering configurations, design intent, etc. By contrast, other methodologies have historically required accompanying use of 2D engineering drawings to provide such details. Use of the 3D digital data set Modern 3D CAD applications allow for the insertion of engineering information such as dimensions, GD&T, notes and other product details within the 3D digital data set for components and assemblies. MBD uses such capabilities to establish the 3D digital data set as the source of these specifications and design authority for the product. The 3D digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 10303
ISO 10303 (Automation systems and integration — Product data representation and exchange)ISO 10303-1:1994 Industrial automation systems and integration -- Product data representation and exchange -- Part 1: Overview and fundamental principles is a family of ISO standards for computer-interpretable representation (description) and exchange of product manufacturing information (PMI). It aims to provide interoperability between various computer-aided design (CAD) software, assist with automation in computer-aided manufacturing (CAM), and allows long-term archival of 3D, CAD and PDM data. It is known informally as "STEP", which stands for "''Standard for the Exchange of Product model data''". Due to a large scope ISO 10303 is subdivided into approximately 700 underlying standards total. The standard includes Parts 11-18 and Part 21 that describe EXPRESS data schema definition language and STEP-file (also STEP-XML) used for textual representation of PMI data codified by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAD Data Exchange
CAD data exchange is a method of Engineering drawing, drawing data exchange used to translate between different computer-aided design (Computer-aided design, CAD) authoring systems or between CAD and other downstream CAx systems. Many companies use different CAD systems and exchange CAD data file format with suppliers, customers, and subcontractors. Such formats are often proprietary. Transfer of data is necessary so that, for example, one organization can be developing a CAD model, while another performs analysis work on the same model; at the same time a third organization is responsible for manufacturing the product.Xu, X. (2009). ''Integrating advanced computer-aided design, manufacturing, and numerical control: Principles and implementations''. Hershey, PA: Information Science Reference. Since the 1980s, a Computer-aided technologies, range of different CAD technologies have emerged. They differ in their application aims, user interfaces, performance levels, and in data s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
