The　floating　support　friction　disk　(FSFD)　is　one　of　the　key　components　of　the　clutch,　and　its　machining　accuracy　significantly　affects　its　mechanical　performance.　In　order　to　investigate　the　influence　of　gear　shaping　process　on　the　dimensional　accuracy　of　friction　disk,　this　paper　uses　the　finite　element　method　(FEM)　to　establish　the　simulation　model　and　simulate　the　quenching　and　gear　shaping　process.　The　temperature　field　and　stress　field　of　the　friction　disk　blank　during　the　quenching　process,　as　well　as　the　variation　of　stress　and　deformation　during　gear　shaping,　are　obtained.　The　results　show　that　the　first　principal　stress　and　Mises　stress　near　the　tooth　root,　with　the　value　of　244　MPa　and　1290　MPa　respectively,　are　larger　than　other　parts.　The　maximum　positive　deformation　(0.0233mm)　and　negative　deformation　(0.0476mm)　is　located　at　near　the　outer　edge　of　the　front　and　the　bottom　of　tooth　root,　respectively.　©　2020　ACM.