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Over toleranties on passingen in den machinebouw
Author(s) -
Sittig J.
Publication year - 1946
Publication title -
statistica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 39
eISSN - 1467-9574
pISSN - 0039-0402
DOI - 10.1111/j.1467-9574.1946.tb00042.x
Subject(s) - standard deviation , range (aeronautics) , measure (data warehouse) , simple (philosophy) , mathematics , normal distribution , systematic error , statistics , computer science , engineering , data mining , philosophy , epistemology , aerospace engineering
Summary Tolerance problems in mechanical engineering ought to be treated with statistical methods. It is shown that the use of range (instead of standard deviation) for measuring variability in tolerances and fits leads to systematic errors. The suggestion is made to measure variability in mechanical engineering by T = 4,65 s̀, being the 98%‐range in the case of normal distribution. A simple statistical approach to selective assembling is mentioned.