Heating apparatus of a workpiece of distorted shape, and a quenching apparatus for simultaneous operation of multiple cams and a quenching method for the same
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United States of America Patent
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Feb 4, 2003
Grant Date -
N/A
app pub date -
Nov 9, 2000
filing date -
Nov 10, 1999
priority date (Note) -
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Abstract
Rotation of a plate cam arranged at almost the center position of a semi-open coil is performed by a motor, and induction heating of the periphery of the plate cam is performed by the semi-open coil during the rotation. The process results in uniform heating of the periphery of a workpiece of distorted shape. A detector of an angle of rotation to detect an angle of rotation of the plate cam and an electric power control part to control the electric power to be supplied to the semi-open coil according to the detection results of the detector of an angle of rotation, are provided so that the most outer end at the farthest position from the center of the plate cam is not excessively heated. A process is also provided.
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