Profile corrections on gears are a commonly used method to reduce transmission error, contact shock, and
scoring risk. Thereare differenttypes ofprofile corrections. Itis aknown fact, thatthe typeofprofilecorrection
used will have a strong influence on the resulting transmission error. The degree of this influence may be
determined by calculating tooth loading during mesh. The current method for this calculation is very
complicated and time consuming; however, a new approach has been developed which could reduce the
calculation time.
This approach uses an algorithm which includes the conventional method for calculating tooth stiffness in
regards to bending and shearing deformation, flattening dueto Hertzian pressure, and tilting ofthetooth in the
gear body. The new method was tested by comparing its results with FEM and LVR.
This paper illustrates and discusses the results of this study. Furthermore the maximum local power losses
arecompared with thescoring safetycalculated following theflash temperaturecriteriaofAGMA925 and DIN
3990.

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