Concurrent dimensioning for accuracy and cost

Sfantsikopoulos, MM; Diplaris, SC; Papazoglou, PN

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