Patent ID: 11951552
Assignee: KARL SCHUESSLER GMBH & CO. KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 25:
26. A method for operating an induction heating device for a shrink-clamping and/or unshrink-unclamping of tools into and/or out of tool holders according to claim 1, with an induction heating unit comprising at least one first inductor and at least one second inductor which is realized separately from the first inductor,
wherein by means of the first inductor and by means of the second inductor respectively at least one portion of the tool holder is/are expanded by inductive heating in a shrink-clamping and/or unshrink-unclamping process,
wherein in a heating operation for expanding a tool holder the first inductor and the second inductor are operated in different manners, and
wherein in the heating operation for an expansion of the tool holder one of the two inductors is overall supplied with a current longer than the other inductor.