| dc.description |
The existing methods of estimating the actual loads on the teeth of
gears at speed are by no means satisfactory. Discrepancies between
the methods are illustrated by calculations made for typical conditions
to be used in the tests. A discussion on the possible factors that may
influence the dynamic load and on the practical value of an exact
knowledge is included.
A power circulating rig that is being built at the College for the
measurement of the dynamic loads is described together with the proposed
method of instrumentation. The main design features of this rig
are its accuracy under loading conditions, its slip free loading coupling
and its adjustable centre distance.
The proposed research programme includes tests on spur and helical
gears both with and without profile modification. Investigations will be
carried out on these gears at pitch circle velocities over the range
0- 20,000 ft. /min. and tangential tooth loads of 0 - 3,000 lb. /in. face. |
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