Apparatus for inductive heating of a tool holder

Details Apparatus for inductive heating of a tool holder Apparatus for inductive heating of a tool holder

2005-03-15

2005-03-15

Hoang, Tu (Department: 3742)

Electric heating

Inductive heating

Specific heating application

C219S635000, C219S639000, C219S652000, C219S672000

Reexamination Certificate

active

06867396

ABSTRACT:
An apparatus for inductively heating a sleeve section, having a central holding opening for a shank of a rotary tool, of a tool holder that holds the shank in the holding opening in a press fit and releases it upon heating. The apparatus includes an induction coil arrangement with at least one induction coil, a generator that feeds the induction coil arrangement with electric current of periodically varying amplitude, and a yoke arrangement of magnetizable material, which concentrates the magnetic flux of the induction coil onto the sleeve section in a fashion distributed all around. The induction coil is axially offset from the tool holder axis of rotation, in particular substantially radially next to the axis of rotation, and does not wrap around the section. Furthermore, the induction coil includes a coil core, of magnetizable material, that is connected in a magnetically conducting fashion to the yoke arrangement.

REFERENCES:
patent: 4604510 (1986-08-01), Laughlin et al.
patent: 4761527 (1988-08-01), Mohr

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