To provide a device for efficiently shrinkage-fitting a cutter tool to a tool holder in a short time without generating the noise.
This shrinkage fitting device is formed of a shrinkage fit heating coil unit 1 for electromagnetic induction heating of a tool holding part, which is formed of 3-4 kinds of electromagnetic induction heating coils 6 having a different diameter and to be provided with a space in the periphery of a tool holding part 11 and a control unit 20 having a high frequency generating unit for flowing the high frequency to the coils 6, an automatic frequency control circuit, a turning circuit for stopping the current when the current flowing to the coils 6 and size of the tool holding part do not much with each other, a timer and a temperature sensor, and a tool holding part 11 for tool holder appropriate for the heating coil unit 1 for electromagnetic induction heating and having a coefficient of thermal expansion at 16.0×10-6/°C or more and high strength characteristic at 750 N/mm2 or more.
| JPS5934401 | TURBINE ROTOR |
| JP2880212 | [Title of Invention] Electroplated Drum |
HASHIMOTO KAZUHIRO
KIKO MASAFUMI
YORITAKA GIJUTSU KENKYUSHO KK
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