Concurrent dimensioning for accuracy and cost

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dc.contributor.author Sfantsikopoulos, MM en
dc.contributor.author Diplaris, SC en
dc.contributor.author Papazoglou, PN en
dc.date.accessioned 2014-03-01T01:10:53Z
dc.date.available 2014-03-01T01:10:53Z
dc.date.issued 1995 en
dc.identifier.issn 0268-3768 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/11476
dc.subject Dimensioning en
dc.subject Machine accuracy en
dc.subject Manufacturability en
dc.subject Manufacturing cost en
dc.subject Tolerance optimisation en
dc.subject Tolerancing en
dc.subject.classification Automation & Control Systems en
dc.subject.classification Engineering, Manufacturing en
dc.title Concurrent dimensioning for accuracy and cost en
heal.type journalArticle en
heal.identifier.primary 10.1007/BF01186877 en
heal.identifier.secondary http://dx.doi.org/10.1007/BF01186877 en
heal.language English en
heal.publicationDate 1995 en
heal.abstract The Cartesian coordinate system used for the geometrical, dimensional and accuracy description of a part is critical for programming CNC machining and achieving the required tolerances. Datum surfaces, fixture design, workpiece positioning and orientation in the machine tool workspace are directly influenced by the system which is adopted. On the other hand, constraints imposed by the available machining axes accuracy capabilities (i.e. accuracy of the available machine tools for the particular job) and the always present minimum machining cost requirement cannot be readily incorporated into the relevant considerations. In mechanical design, dimensional chains are frequent and observation of the specified tolerances - in conjunction with the geometrical ones - guarantees the part functionality. Definition of the workpiece zero point and the Cartesian coordinate system for CNC machining and/or measurement (CMM) and tolerance transfer to this system of the functional tolerances under the constraints mentioned is, as the industrial practice has shown, a difficult, tedious, experience demanding and time consuming task. In the paper an approach which has been developed for a systematic handling of this important engineering problem is presented. It is shown that the proposed algorithm and its CAD implementation constitute efficient tools for the analysis of the possible part dimensioning solutions. The designation of that zero workpiece point (ZWP) and Cartesian coordinate system which provide for minimum machining accuracy cost and for acceptable tolerances lying well within the machine tool accuracy capabilities is thus achieved. The complete methodology is further demonstrated and discussed in a 2 1/2 D case study and appropriate conclusions are drawn. © 1995 Springer-Verlag London Limited. en
heal.publisher Springer-Verlag en
heal.journalName The International Journal of Advanced Manufacturing Technology en
dc.identifier.doi 10.1007/BF01186877 en
dc.identifier.isi ISI:A1995RQ55300004 en
dc.identifier.volume 10 en
dc.identifier.issue 4 en
dc.identifier.spage 263 en
dc.identifier.epage 268 en

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