US 11,951,552 B2
Process-controlled energy supply of an induction coil for a heating of heat-shrink chucks
Alexander Zoller, Pleidelsheim (DE); Christian Pfau, Ingersheim (DE); and Klaus Schuessler, Bodelshausen (DE)
Assigned to E. ZOLLER GMBH & CO. KG EINSTELL-UND MESSGERÄTE, Pleidelsheim (DE); and KARL SCHUESSLER GMBH & CO. KG, Bodelshausen (DE)
Filed by E. Zeller GmbH & Co. KG E. Zoller GmbH & Co. KG Einstell-und Messgeraete, Pleidelsheim (DE); and Karl SCHUESSLER GmbH & Co. KG, Bodelshausen (DE)
Filed on Feb. 11, 2021, as Appl. No. 17/173,854.
Claims priority of application No. 10 2020 103 871.2 (DE), filed on Feb. 14, 2020.
Prior Publication US 2021/0252606 A1, Aug. 19, 2021
Int. Cl. B23B 31/117 (2006.01); H05B 6/06 (2006.01); H05B 6/14 (2006.01); H05B 6/44 (2006.01)
CPC B23B 31/1179 (2013.01) [H05B 6/06 (2013.01); H05B 6/14 (2013.01); H05B 6/44 (2013.01); B23B 2240/28 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An induction heating device for a shrink-clamping and/or unshrink-unclamping of tools into and/or out of tool holders, with an induction heating unit comprising:
at least one first inductor; and
at least one second inductor,
wherein the first inductor and the second inductor are configured to respectively expand at least a portion of the tool holder by inductive heating in a shrink-clamping and/or unshrink-unclamping process, and
with an electric supply unit, wherein the inductors are configured to output respectively different energies to different subregions of a tool holder, which are in a heating operation respectively encompassed by the inductors, as one of the inductors has more windings than the other inductor and/or as the electric supply unit is at least configured to operate the first inductor and the second inductor in different manners, and
wherein a total winding height of the two inductors in an axial direction of the induction heating unit is smaller than a maximum standardized clamp-in length of the tool holders.