Three things have happened in
the last few weeks, that lead me to
believe the worst is over - not
that great times are ahead, but that
things will get better.
On gear drives running with pitch line velocities below 0.5 m/s so called slow speed wear is often observed. To solve
some problems, extensive laboratory test work was started 10 years ago. A total of circ. 300,000 h running time on FZG back-to-back test rigs have been run in this speed range.
When designing gears, the engineer is often faced with the problem of selecting the number of teeth in each gear, so that
the gear train will provide a given speed ratio
The proper design or selection of gear cutting tools requires thorough and detailed attention from the tool designer. In addition to experience, intuition and practical knowledge, a
good understanding of profile calculations is very important.
One of the current research
activities here at California State University at Fullerton is systematization of existing knowledge of design of planetary gear trains.