APPARATUS FOR HARDENING CYLINDRICAL BLOCK, AND METHOD FOR MANUFACTURING CYLINDRICAL BLOCK

PROBLEM TO BE SOLVED: To develop an apparatus for hardening a cylindrical block, wherein the hardening apparatus for cylindrical block performing the high frequency induction-hardening is improved and an induction-heating coil can be moved in the rotating direction. SOLUTION: In the hardening appara...

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Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To develop an apparatus for hardening a cylindrical block, wherein the hardening apparatus for cylindrical block performing the high frequency induction-hardening is improved and an induction-heating coil can be moved in the rotating direction. SOLUTION: In the hardening apparatus 1 for cylindrical block, a transformer 6, a fixed side coil 7 and a movable side coil 8, are fitted to an ascending/descending table 5 and further, an induction-heating coil 10 is fitted to the movable side coil 8. On the ascending/descending table 5, a motor (coil-operating means) 11 for rotating the induction-heating coil 8, is arranged. A coil main body part 42 in the movable side coil 8 is integrated in the axial direction to the fixed side coil 7, but has a degree of freedom in the rotating direction. In the case of rotating the motor (coil-operating means) 11, the movable side coil 8 is wholly rotated and the induction-heating coil 10 is rotated. COPYRIGHT: (C)2008,JPO&INPIT