Atechnologyforcoldforgingofhelicalgearwithcrowningusingelasticdeformationofdie；Developmentofnewdrivingsystemsunroof；Effectofthegear-shapercuttergrindingon8surfaceonitsgeometryandprofileerrors；Mathematicalmodelandundercuttinganalysisofmodifiedhelicalgearswithsmallernumberofteeth；Predictingtheheat-treatresponseofacarburizedhelicalgear
