In manufacturing and mechanical engineering, flatness is an important geometric condition for workpieces and tools. In the manufacture of precision parts and assemblies, especially where parts will be required to be connected across a surface area in an air-tight or liquid-tight manner, flatness is a critical quality of the manufactured surfaces. Such surfaces are usually machined or ground to achieve the required degree of flatness. High-definition metrology, such as digital holographic interferometry, of such a surface to confirm and ensure that the required degree of flatness has been achieved is a key step in such manufacturing processes. Flatness may be defined in terms of least squares fit to a plane ("statistical flatness"), worst-case or overall flatness (the distance between the t

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  • Ebenheit ist die Angabe über die Formtoleranz, in der sich eine erzeugte ebene Fläche (z. B. durch Fräsen oder Schleifen) befinden muss. Die Toleranzgrenzen ergeben sich durch zwei gedachte Flächen, parallel zur ideal erzeugten Fläche. Wenn die real erzeugte Fläche durch die eine der parallelen Flächen durchsticht, ist die Toleranz überschritten. Das Sinnbild hierfür in der Technik ist ein Parallelogramm. (de)
  • In manufacturing and mechanical engineering, flatness is an important geometric condition for workpieces and tools. In the manufacture of precision parts and assemblies, especially where parts will be required to be connected across a surface area in an air-tight or liquid-tight manner, flatness is a critical quality of the manufactured surfaces. Such surfaces are usually machined or ground to achieve the required degree of flatness. High-definition metrology, such as digital holographic interferometry, of such a surface to confirm and ensure that the required degree of flatness has been achieved is a key step in such manufacturing processes. Flatness may be defined in terms of least squares fit to a plane ("statistical flatness"), worst-case or overall flatness (the distance between the two closest parallel planes within). Two parts that are flat to about 1 helium light band (HLB) can be "wrung" together, which means they will cling to each other when placed in contact. This phenomenon is commonly used with gauge blocks. Geometric dimensioning and tolerancing has provided geometrically defined, quantitative ways of defining flatness operationally. (en)
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  • Ebenheit ist die Angabe über die Formtoleranz, in der sich eine erzeugte ebene Fläche (z. B. durch Fräsen oder Schleifen) befinden muss. Die Toleranzgrenzen ergeben sich durch zwei gedachte Flächen, parallel zur ideal erzeugten Fläche. Wenn die real erzeugte Fläche durch die eine der parallelen Flächen durchsticht, ist die Toleranz überschritten. Das Sinnbild hierfür in der Technik ist ein Parallelogramm. (de)
  • In manufacturing and mechanical engineering, flatness is an important geometric condition for workpieces and tools. In the manufacture of precision parts and assemblies, especially where parts will be required to be connected across a surface area in an air-tight or liquid-tight manner, flatness is a critical quality of the manufactured surfaces. Such surfaces are usually machined or ground to achieve the required degree of flatness. High-definition metrology, such as digital holographic interferometry, of such a surface to confirm and ensure that the required degree of flatness has been achieved is a key step in such manufacturing processes. Flatness may be defined in terms of least squares fit to a plane ("statistical flatness"), worst-case or overall flatness (the distance between the t (en)
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  • Ebenheit (Technik) (de)
  • Flatness (manufacturing) (en)
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