公开(公告)号：EP2682622B1

公开(公告)日：2019-07-31

申请号：EP12752929.5

申请日：2012-02-22

申请人： NTN Corporation

发明人： ITAGAKI Taku ,  KATO Seiya ,  DRIER Brian

IPC分类号： F16D3/202 ,  F16D3/205

公开(公告)号：EP2682622A1

公开(公告)日：2014-01-08

申请号：EP12752929.5

申请日：2012-02-22

申请人： NTN Corporation

发明人： ITAGAKI Taku ,  KATO Seiya ,  DRIER Brian

IPC分类号： F16D3/20 ,  F16D3/205

CPC分类号： F16D3/202 ,  F16D3/2055 ,  F16D2250/0053 ,  F16D2300/10

摘要： Proposed are a heat treatment method capable of molding, by mobile quenching of induction quenching, an outer joint member of a tripod type constant velocity universal joint excellent in a strength thereof without forming hardened layers in larger radially-inner portions, and the outer joint member and the tripod type constant velocity universal joint which are manufactured by the above-mentioned heat treatment method. Mobile quenching is performed in such a manner that a high-frequency induction heating coil (51) is moved in an axial direction relative to an outer joint member (21), and thus hardened layers (S) are formed on the roller guide surfaces (27) of the outer joint member (21). Magnetic field line cut-out bodies (A) for cutting out magnetic field lines generated through the high-frequency induction heating coil are arranged on the high-frequency induction heating coil (51), and each of the larger radially-inner portions (46) of the outer joint member (21) becomes an unquenched portion (50) by cutting out the magnetic field lines with the magnetic field line cut-out bodies (A).

摘要翻译： 本发明提供一种热处理方法，该热处理方法能够通过高频淬火的可动式淬火来模制在大径向内部不形成硬化层且强度优异的三球销型等速万向接头的外侧接头部件，并且外侧接头部件 以及通过上述热处理方法制造的三球销型等速万向接头。 以高频感应加热线圈（51）相对于外侧接头部件（21）沿轴向移动的方式进行移动淬火，在辊引导面上形成硬化层（S） 27）。 在高频感应加热线圈51上配置有用于切断通过高频感应加热线圈产生的磁力线的磁场线切口体（A），该高频感应加热线圈51的大径向内侧部分（46 ）通过利用磁场线切除体（A）切除磁力线而成为未切断部（50）。