This paper deals with the design of helical gears that have minimum transmission error and, at the same
time, are less sensitive to manufacturing errors. The paper addresses two stages in design: 1) Design
generation stage where feasible designs are generated for a given specification and 2) Design of profile and
lead modifications that minimize transmission error and its sensitivity to manufacturing errors. The paper
presents a brief discussion on how one can effectively minimize transmission error in helical gears by
combining both lead and profile modifications.
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