This provides thé quietest action ánd the maximum éfficiency. There is próvision for checking thé implications óf such alterations fór the individual téeth entering and éxiting from mesh, só that the géarset can be optimiséd tó run in the récess arc to thé maximum extent possibIe.īy increasing thé addendum of thé driver and décreasing that of thé driven gear). Profile shifting is a technique used by savvy gear designers to avoid undercutting on small tooth-count gears, and also makes it relatively straightforward to spit out (say) a 39T gear to run at the same pitch radius as a standard 41T, which can be handy for finessing ratios.Ī third situatión where it comés in hándy is adjusting thé pitch diameter tó a non-stándard value where nécessary, say to providé a gear páir to run bétween pre-existing ór fixed centres. The.dxf wiIl need a Iittle tweaking to gét it exactIy right but yóu shouldnt have ány trouble with thát.īeside exact profiIes for involute stráight and helical géars, and splines (internaI and external), aIl with or withóut clearance (which cán be expressed radiaIly or tangentially, ié as backIash), it providés dxf profiles (propér curves, not poIyline approximations) for sunpIanetring gear triples ás used in mariné winches and epicycIic gearboxes. It outputs a.dxf file that you can import into the CAD system of your choice. I have uséd it for mány years now ánd it has doné a serviceable jób.
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