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1. (WO2001089758) SHRINKING DEVICE FOR A TOOLHOLDER

Pub. No.:    WO/2001/089758    International Application No.:    PCT/EP2000/004645
Publication Date: 29.11.2001 International Filing Date: 22.05.2000
IPC: B23B 31/02
B23P 11/02
B23Q 11/14
H05B 6/10
H05B 6/14
H05B 6/38
Applicants: FRANZ HAIMER GMBH
HAIMER, Franz
HAIMER, Josef
KÜGLE, Wolfgang
Inventors: HAIMER, Franz
HAIMER, Josef
KÜGLE, Wolfgang
Title: SHRINKING DEVICE FOR A TOOLHOLDER
Abstract:
The invention relates to a shrinking device (1) for shrinking a rotary tool (5) into a central receiving opening of a toolholder (3) which holds said rotary tool (5) in a press fit. The device comprises an induction heating device (15, 18) for thermally expanding the toolholder (3) in the area of the receiving opening. A cooling device (51, 53) with at least one cooling collar (53) which can be placed on the toolholder (3), in physical contact with the same, and through which a liquid coolant can flow, is provided for cooling the receiving opening area of the toolholder. This liquid cooling considerably reduces the overall time span needed for the shrinking process.