US 12,145,232 B2
Anterior spindle device for use on a machine tool
Jens Ketelaer, Wiesbaden (DE); Gaston Schwenk, Simmern (DE); and Fabian Franzmann, Veitsrodt (DE)
Assigned to DMG MORI Ultrasonic Lasertec GmbH, Stipshausen (DE)
Appl. No. 17/622,655
Filed by DMG MORI Ultrasonic Lasertec GmbH, Stipshausen (DE)
PCT Filed Jul. 17, 2020, PCT No. PCT/EP2020/070305
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2021/018635, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 10 2019 211 287.0 (DE), filed on Jul. 30, 2019.
Prior Publication US 2022/0355429 A1, Nov. 10, 2022
Int. Cl. B23Q 3/12 (2006.01); B23B 37/00 (2006.01); B23Q 11/00 (2006.01)
CPC B23Q 3/12 (2013.01) [B23B 37/00 (2013.01); B23Q 11/001 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An anterior spindle device for use on a machine tool (100), comprising:
a clamping interface (12) for clamping said anterior spindle device on a work spindle (103) of said machine tool (100);
an anterior spindle unit (14) with a spindle (14a) for driving a drilling tool clamped on said spindle (14a); and
a drive (15) for exerting a force on said anterior spindle unit (14),
characterized by
an electromagnetic actuator (16) for exerting a counterbalancing force opposite to the force of said drive (15) on said anterior spindle unit (14).