A general model to estimate hole location deviation in drilling: the contribution of three error sources
- 6 Downloads
Geometric accuracy is a critical performance factor for machining, especially when one of the basic requirements is high precision. In this paper, a general and systematic approach is shown to model hole geometric deviation from nominal due to the geometric errors of three important elements of the drilling process: the locators, the workpiece datum surface and the machine tool. The proposed approach was used for calculating the deviation from nominal of lots of drilled holes on a plate in order to evaluate the influence of the locator errors, of the form deviation of the part datum surfaces and of the volumetric error of the machine tool. Those parameters’ influence was evaluated through a design of experiments technique with a factorial plane implemented in a Matlab® file, allowing a saving of time, energy and material. It was found that the volumetric error of the machine tool influenced mainly the drilled hole location deviation from nominal.
KeywordsDrilling accuracy Geometric source error Error model Error separation
Unable to display preview. Download preview PDF.
This research has been partially funded by the Italian Ministry of University and Research (MIUR).
- 14.Rong Y, Zhu Y (1999) Computer-aided fixture design. Manufacturing engineering and materials processing. Marcel Dekker Inc., New York, NYGoogle Scholar
- 16.Villeneuve F, Legoff O, Bourdet P (2000) Three dimensional geometrical tolerancing in process planning. CIRP J Manuf Sys 30(5):20–39Google Scholar
- 19.Weill R, Darel I, Laloum M (1991) The influence of fixture positioning errors on the geometric accuracy of mechanical parts. In: Proceedings of the CIRP conference on production engineering and Manufacturing science, Tianjin, China, pp 215–225Google Scholar
- 21.Wang L, Duan F, Liang C (2011) A global optimal algorithm for camera calibration with one-dimensional objects. In: Jacko J (ed) Human-computer interaction. Design and development approaches, vol. 6761 of lecture notes in computer science. Springer, Berlin, HeidelbergGoogle Scholar
- 33.Armillotta A, Carrino L, Moroni G, Polini W, Semeraro Q (2003) An analytical approach to machining deviation due to fixturing. In: Bourdet P, Mathieu L (eds) Geometric product specification and verification: integration of functionality. Kluwer Academic Publishers, Dordrecht, pp 175–184CrossRefGoogle Scholar
- 40.Dornfeld D, Lee DE (2007) Precision Manufacturing. Springer, New York, NYGoogle Scholar