The abbreviation CNC stands for ''Computer(ized) Numerical(ly) Control(led)'', and refers specifically to the computer control of machine tools for the purpose of (repeatedly) manufacturing complex parts in metal as well as other materials, using a program written in a notation conforming to the EIA-274-D standard and commonly called ''G-code''. CNC was developed in the late 1940s and early 1950s by the MIT Servomechanisms Laboratory. CNC machines were relatively briefly preceded by the less advanced NC, or numerically controlled, machines. ==Tools with CNC variants== * Drills * Electrical discharge machinings * Lathes * Milling machines * CNC wood routers * Sheetmetal works ==Description== The introduction of CNC machines radically changed the manufacturing industry. Curves are as easy to cut as straight lines, complex 3-D structures are relatively easy to produce, and the number of machining steps that required human action have been dramatically reduced. With the increased automation of manufacturing processes with CNC machining, considerable improvements in consistency and quality have been achieved. CNC automation eliminated errors and provided CNC operators with time to perform additional tasks. CNC automation also allows for more flexibility in the way parts are held in the manufacturing process and the time required to change the machine to produce different components. In a production environment, a series of CNC machines may be combined into one station, commonly called a "cell", to progressively machine a part requiring several operations. CNC machines today are controlled directly from files created by Computer-aided design software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the manufactured component. In a sense, the CNC machines represent a special segment of industrial robot systems, as they are programmable to perform many kinds of machining operations (within their designed physical limits, like other robotic systems). ==External links== *[http://www.stoneworld.com/CDA/ArticleInformation/features/BNP__Features__Item/0,4046,65312,00.html ''Computers advance stoneworking technology''] – By Jill Critchley (Stone World; www.stoneworld.com), 10 Oct 2001 * [http://www.gefanuc-europe.com GE Fanuc Automation Europe S.A.] *[http://www.pmozarks.com/article/what_is_cnc.htm "What is CNC?"] – By Mike Lynch *[http://www.cncci.com/resources/articles/CNC%20basics%201.htm Fundamentals Of CNC] *[http://www.cnczone.com CNCzone.com - The Ultimate Machinist Community] *[http://www.franjometal.com/metal-spinning/cnc-metal-spinning.html Introduction to CNC Metal Spinning Techniques] *[http://www.franjometal.com/metal-spinning/flow-forming.html Flow Forming and Shear Forming w/ CNC] Embedded systems Tools Production and manufacturing
== Industry standard protocols == Does anybody know about the standards used for the files to control the CNC machines? ISO standard?? :The simple answer is that there is no ''Standard''. There are a couple of areas where there is an approximation of one. :*Since the mid 1980s, the Electronics Industries Association (EIA) has published RS-494. It is a multi-part specification and has been partly adopted by the IEEE. This is probably closest to an industry standard. :*ISO has only ''ISO/IEC 9506, Industrial automation systems - Manufacturing Message Specification'' which deals more with headers and encapsulation. :*ISO also has ''ISO 10303, Industrial automation systems and integration - Product data representation and exchange'', but this deals more with specs for the part being machined, while NC wants to look at the steps needed to machine it. :Sorry I can't get you a clear answer. The are a number of semiproprietary software solutions based around the RS-494 specification. --User:LouI 15:02, 15 Sep 2003 (UTC) ::The G-Codes are standardised in ISO 6983. ::The newer ISO 14649 offers a feature based alternative. ::ISO 14649 has been incorporated into STEP (ISO 10303) as the ARM for '''ISO ''10303-AP238'''''. ::Cheers. --User:Dinian 21:15, 17 Apr 2005 (GMT)
#Redirect CNC
See other meanings of words starting from letter:
Words begining with Cnc:
CNC
CNC
Cnc
CNCF
Cncs
Cncs_wikipedia
Cncs_wikipedia
Cncxbox
CNC_China
CNC_Software/Mastercam
CNC_Turning
CNC_wood_router
CNC_wood_router
CNC
The abbreviation CNC stands for ''Computer(ized) Numerical(ly) Control(led)'', and refers specifically to the computer control of machine tools for the purpose of (repeatedly) manufacturing complex parts in metal as well as other materials, using a program written in a notation conforming to the EIA-274-D standard and commonly called ''G-code''. CNC was developed in the late 1940s and early 1950s by the MIT Servomechanisms Laboratory. CNC machines were relatively briefly preceded by the less advanced NC, or numerically controlled, machines. ==Tools with CNC variants== * Drills * Electrical discharge machinings * Lathes * Milling machines * CNC wood routers * Sheetmetal works ==Description== The introduction of CNC machines radically changed the manufacturing industry. Curves are as easy to cut as straight lines, complex 3-D structures are relatively easy to produce, and the number of machining steps that required human action have been dramatically reduced. With the increased automation of manufacturing processes with CNC machining, considerable improvements in consistency and quality have been achieved. CNC automation eliminated errors and provided CNC operators with time to perform additional tasks. CNC automation also allows for more flexibility in the way parts are held in the manufacturing process and the time required to change the machine to produce different components. In a production environment, a series of CNC machines may be combined into one station, commonly called a "cell", to progressively machine a part requiring several operations. CNC machines today are controlled directly from files created by Computer-aided design software packages, so that a part or assembly can go directly from design to manufacturing without the need of producing a drafted paper drawing of the manufactured component. In a sense, the CNC machines represent a special segment of industrial robot systems, as they are programmable to perform many kinds of machining operations (within their designed physical limits, like other robotic systems). ==External links== *[http://www.stoneworld.com/CDA/ArticleInformation/features/BNP__Features__Item/0,4046,65312,00.html ''Computers advance stoneworking technology''] – By Jill Critchley (Stone World; www.stoneworld.com), 10 Oct 2001 * [http://www.gefanuc-europe.com GE Fanuc Automation Europe S.A.] *[http://www.pmozarks.com/article/what_is_cnc.htm "What is CNC?"] – By Mike Lynch *[http://www.cncci.com/resources/articles/CNC%20basics%201.htm Fundamentals Of CNC] *[http://www.cnczone.com CNCzone.com - The Ultimate Machinist Community] *[http://www.franjometal.com/metal-spinning/cnc-metal-spinning.html Introduction to CNC Metal Spinning Techniques] *[http://www.franjometal.com/metal-spinning/flow-forming.html Flow Forming and Shear Forming w/ CNC] Embedded systems Tools Production and manufacturing
CNC
== Industry standard protocols == Does anybody know about the standards used for the files to control the CNC machines? ISO standard?? :The simple answer is that there is no ''Standard''. There are a couple of areas where there is an approximation of one. :*Since the mid 1980s, the Electronics Industries Association (EIA) has published RS-494. It is a multi-part specification and has been partly adopted by the IEEE. This is probably closest to an industry standard. :*ISO has only ''ISO/IEC 9506, Industrial automation systems - Manufacturing Message Specification'' which deals more with headers and encapsulation. :*ISO also has ''ISO 10303, Industrial automation systems and integration - Product data representation and exchange'', but this deals more with specs for the part being machined, while NC wants to look at the steps needed to machine it. :Sorry I can't get you a clear answer. The are a number of semiproprietary software solutions based around the RS-494 specification. --User:LouI 15:02, 15 Sep 2003 (UTC) ::The G-Codes are standardised in ISO 6983. ::The newer ISO 14649 offers a feature based alternative. ::ISO 14649 has been incorporated into STEP (ISO 10303) as the ARM for '''ISO ''10303-AP238'''''. ::Cheers. --User:Dinian 21:15, 17 Apr 2005 (GMT)
Cnc
#Redirect CNC
See other meanings of words starting from letter:
C
CA | CB | CD | CE | CF | CG | CH | CI | CJ | CK | CL | CM | CN | CO | CP | CR | CS | CT | CU | CW | CX | CY | CZ |Words begining with Cnc:
CNC
CNC
Cnc
CNCF
Cncs
Cncs_wikipedia
Cncs_wikipedia
Cncxbox
CNC_China
CNC_Software/Mastercam
CNC_Turning
CNC_wood_router
CNC_wood_router
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