geometric tolerance, ; GPS, GD&T, degree of freedom, datum feature


The application of the principles of the geometric product specification (GPS) has increasing importance in the machining industry. The tolerancing process should harmonize the relationship between tolerancing, machining process, measuring and design requirements. The aim of the article is to present the interpretation process and the suggested workflow of geometric tolerances. The dimensional and geometric tolerances are compared, and some critical problems of geometric tolerancing are demonstrated by case studies.

Author Biography

Mikó Balázs, University of Óbuda, Budapest, Hungary

January 2010 - Óbuda University, Bánki Donát Faculty of Mechanical and Safety Engineering, Department of Mechanical Engineering Technology position: associate professor, deputy director of the institute. September 2005 - Bánki Donát College of Mechanical Engineering, Muszaki Foiskola Budapest AGI Department of Mechanical Engineering Technology Position: Associate Professor, Deputy Director of the Institute 2003 Mar - 2005 Sep. Cascade Engineering Europe Ltd. position: CAM programmer (tool and equipment manufacturing, cost calculation) 2001 May - 2003 Mar. Z-Form Szerszámgyártó és Alkalmazástechnikai Kft. position: CAM programmer (tool production) 2000 Feb. - 2001 Apr. BME Department of Mechanical Engineering; position: research assistant (civil service conscript) 1999 Sep. - 2000 Jan. BME Department of Mechanical Engineering; position: research assistant


ISO 1101-2017 Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out.

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Standardization, certification and metrological assurance of the quality of mechanical engineering products