US 11,915,864 B2
Magnetic retaining device
Dieter Bader, Berndorf (AT); Maximilian Prunbauer, Vienna (AT); and Gerald Firmberger, Vienna (AT)
Assigned to Berndorf Band GmbH, Berndorf (AT)
Appl. No. 16/961,604
Filed by Berndorf Band GmbH, Berndorf (AT)
PCT Filed Jan. 11, 2018, PCT No. PCT/AT2018/060009
§ 371(c)(1), (2) Date Jul. 10, 2020,
PCT Pub. No. WO2019/136500, PCT Pub. Date Jul. 18, 2019.
Prior Publication US 2020/0388422 A1, Dec. 10, 2020
Int. Cl. H01F 7/02 (2006.01); B23Q 1/52 (2006.01); B23Q 3/154 (2006.01)
CPC H01F 7/0252 (2013.01) [B23Q 1/52 (2013.01); B23Q 3/1546 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A machining device for machining workpieces, the machining device comprising at least one machining tool and at least one holding device for temporarily fixing a workpiece, wherein the holding device includes a holding surface, at least one first permanent magnet and at least one second permanent magnet, wherein the second permanent magnet is rotatably mounted relative to the first permanent magnet for rotation about a rotational axis, whereby a pole direction of the second permanent magnet is rotatable relative to a pole direction of the first permanent magnet, and wherein the rotational axis is transverse to the holding surface.