Patent ID: 6282502
Filing Date: 2001-08-28
Classification: F16H

Abstract:
A method of designing uniform motion, substantially vibration-free intermeshing spur gears useful in a rotary process having a predetermined process frequency and rotary speed, said rotary process being configured to conform with predetermined space constraints, said method comprising the steps of:(a) providing a predetermined speed ratio for said intermeshing gears;(b) selecting (n) sets of values, each set of said (n) sets of values representing a gear design, said values including at least number of teeth, diametral pitch (P.sub.d), profile angle(.phi.), face width (W) and addendum modification (h);(c) determining whether said gear designs defined by each of said (n) sets of value satisfies said space constraints and said speed ratio;(d) selecting said gear designs satisfying said space constraints and said speed ratio;(e) from said gear designs selected in step (d), computing said gear mesh frequency and up to at least (m) multiples, wherein (m) is an integer;(f) computing multiples of said process frequency up to about (k) multiples, wherein (k) is an integer;(g) comparing each of said (m) multiples of said gear mesh frequency to each of said (k) multiples of said process frequency, wherein nonmatching (m) and (k) multiples resulting from said comparison define selectable gear designs;(h) analyzing said selectable gear designs for at least a predetermined load bearing capability and conformance with predetermined contact ratios of said intermeshing gears; and(i) selecting said selectable gear designs remaining after step (h).