- Tytuł:
- Tolerances for aluminium alloy-extruded profiles according to EN 755-9 and EN 12020-2 versus definitions of tolerances according to the ISO GPS system
- Autorzy:
-
Humienny, Zbigniew
Blaszczyk, Marcin - Powiązania:
- https://bibliotekanauki.pl/articles/1428683.pdf
- Data publikacji:
- 2021
- Wydawca:
- Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
- Tematy:
-
ISO GPS
geometrical tolerancing
aluminium extrusion
product verification - Opis:
- The inconsistencies between tolerances for aluminium profiles as specified in EN 755-9:2016 along with EN 12020-2:2016 and tolerance concepts defined in ISO 1101:2017 are demonstrated. It is shown that the standards defining requirements for extruded profiles have been developed without considering provisions in the ISO GPS system. A number of ambiguities in EN 755-9 and EN 12020-2 that were overcome in the ISO GPS system are shown. For example, broad application of plus/minus tolerancing for step dimensions does not provide unique verification of aluminium alloy-extruded profiles. It is pointed out that some terms univocally defined in the ISO GPS system are used incorrectly in both standards. It makes it difficult for a customer to verify on CMM whether or not extruded profiles satisfy the requirements specified in the order. Finally, significant changes regarding geometrical tolerancing in standards for the aluminium alloy-extruded profiles are proposed.
- Źródło:
-
Journal of Machine Engineering; 2021, 21, 1; 121-132
1895-7595
2391-8071 - Pojawia się w:
- Journal of Machine Engineering
- Dostawca treści:
- Biblioteka Nauki