Kennedy Grimes
IDIS 303-909
Memo
To:
Raghuram Krishnan
From:
Kennedy Grimes
Section #:
909
Date:
3/7/18
Re:
Lab 6: GEAR TRAINS AND SPEED REDUCERS
Purpose:
The purpose of this lab was to further our knowledge of various speed reducers and gear
trains. Speed reducers adjust the speed between motors and the actual driven part. Gear trains
adjust the gear ratios for various types of gears, so that this adjustment may take place in a
fairly small setup.
Procedure:
We observed and recorded various measurements and characteristics of different gears.
We also recorded various RPM’s and velocity ratios at various speeds using the Job Master
Trainer. We then used the PT-93 catalog to calculate various measurements, including service
factor and drive ratio, for a selected worm gear speed reducer.
Results:
The results are in the packet attached.
Conclusions/Recommendations:
This lab furthered my understanding of how gear ratios have the ability to affect the
output. Each gear has advantages and disadvantages, of which the numbers reflected according,
which we were able to observe and understand more thoroughly. This also furthered my
understanding on how to calculate pitch diameter and teeth for various gears. Being hands-on
allowed us to see human error first hand and differentiate tangible benefits for a gear train or
speed reducer.
