| 摘要 |
<p>The device for hardening a surface of a cylindrical section of a workpiece, comprises an undercut notched in axial direction of the workpiece in the workpiece part in transition region between a cylindrical section and a limiting workpiece part, an inductor (2) that has a heat conductor branch passing in circumference direction of the surface to be hardened for inductive heating of the section, an adjusting device (35, 36) for the engagement of the heat conductor branch of the inductor in the under cut, and an energy supply (3), which furnishes the inductor in operation with electric energy. The device for hardening a surface of a cylindrical section of a workpiece, comprises an undercut notched in axial direction of the workpiece in the workpiece part in transition region between a cylindrical section and a limiting workpiece part, an inductor (2) that has a heat conductor branch passing in circumference direction of the surface to be hardened for inductive heating of the section, an adjusting device (35, 36) for the engagement of the heat conductor branch of the inductor in the under cut, and an energy supply (3), which furnishes the inductor in operation with electric energy. The inductor is connected to the energy supply and has two working elements (6, 7) that are coupled with the adjusting device that displaces the working element for inserting the heat conductor branch into the undercut relative to the surface to be hardened and to energy supply part (5). A transmission unit is provided that transfers the electrical energy required for the inductive heating of the surface to be hardened contact less by the energy supply part on the working element of the inductor. The parting plane is directed between the working element and the energy supply part parallel to longitudinal axis of the workpiece. The undercut is present in an edge of the surface of the workpiece to be hardened and the second working element is associated to the second undercut that is present at the first edge opposite to the edge of the surface of the workpiece to be hardened. The transmission unit transfers the electrical energy on both working elements or transfers the electrical energy inductive on the respective working element. The transmission unit is formed according to a type of transformer, whose one side is associated to the energy supply part and other side is associated to the working element.</p> |
