US 12,330,221 B2
Tool holder with measuring apparatus
Thomas Grosch, Darmstadt (DE)
Assigned to Haimer GmbH, Igenhausen (DE)
Filed by Haimer GmbH, Igenhausen (DE)
Filed on Oct. 19, 2021, as Appl. No. 17/451,350.
Claims priority of application No. 10 2020 127 509.9 (DE), filed on Oct. 19, 2020.
Prior Publication US 2022/0118529 A1, Apr. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B23B 31/02 (2006.01); B23Q 17/09 (2006.01); B23B 31/117 (2006.01); B23B 31/20 (2006.01); B23B 31/30 (2006.01); B23Q 17/12 (2006.01)
CPC B23B 31/02 (2013.01) [B23Q 17/0966 (2013.01); B23B 31/1179 (2013.01); B23B 31/20 (2013.01); B23B 31/305 (2013.01); B23B 2231/24 (2013.01); B23B 2260/128 (2013.01); B23B 2270/24 (2013.01); B23B 2270/32 (2013.01); B23B 2270/48 (2013.01); B23Q 17/0976 (2013.01); B23Q 17/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A tool holder configured for rotation about a tool holder axis of rotation defining an axial direction, the tool holder comprising:
a first axial longitudinal end having a tool section with a tool-receiving formation for receiving a tool;
a second axial longitudinal end having a coupling section with a coupling formation for torque-transmitting coupling to a machine spindle of a machine tool;
a measuring apparatus mounted for rotation with the tool holder and for acquiring data relating to an operation of the tool holder, said measuring apparatus having an acceleration sensor with at least two measurement axes that are oriented substantially radially with respect to the tool holder axis of rotation and being configured for measuring oscillations in a range between 50 Hz and 300 Hz along the at least two measurement axes, and said sensor being arranged in the tool holder axis of rotation, with said measurement axes of said sensor intersecting one another in the tool holder axis of rotation and said measurement axes of said sensor being orthogonal to the tool holder axis of rotation; and
said measuring apparatus having a circuit board disposed concentrically around said sensor and the tool holder axis of rotation, said circuit board being electrically connected to said sensor via a flexible connection line, and said circuit board being disposed in a circular or ring-shaped groove formed in said tool holder concentric with the tool holder axis of rotation.