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Zhu Fumin
College of Automobile &
Mechanical Engineering,
Changsha University of Science
and Technology,
Changsha 410076, China
Li Wanli
College of Mechanical Engineering,
Tongji University,
Shanghai 200092, China
Maropoulos P G
School of
Engineering,
Durham University,
Durham, DH1 3LE, UK |
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TOLERANCE ANALYSIS OF A PLANETARY GEAR
REDUCER UNDER CAD CIRCUMSTANCE
Abstract: Tolerance analysis of a planetary reducer is conducted. By focusing the serially-arranged parts in the central line and setting an appropriate dimension as a “gap”, worst-case tolerance analysis method and statistical (RSS) tolerance analysis are used, and then a tolerance-analyzing tool CE/TOL is introduced. The acceptable value range of the “gap” is from 1.5 mm to 3.5 mm. While worst-case analysis rejects the design, RSS accepts it by a more realistic result with the law of probability accounted. With the help of CE/TOL and CAD software Pro/E, all components’ dimensions and tolerances are assigned and modified, and more detailed and more comprehensible results are gives out.
Key words:
Tolerance Worst-case analysis Statistical tolerance analysis Pro/E CE/TOL |