US 12,420,372 B2
Cutting machine comprising a force transducer, use of such a cutting machine and process of calibrating the force transducer of such a cutting machine
Gunnar Keitzel, Hettlingen (CH); and Denis Kohler, Neftenbach (CH)
Assigned to Kistler Holding AG, Winterthur (CH)
Appl. No. 17/909,014
Filed by KISTLER HOLDING AG, Winterthur (CH)
PCT Filed Jan. 21, 2021, PCT No. PCT/EP2021/051358
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2021/185496, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 20164251 (EP), filed on Mar. 19, 2020.
Prior Publication US 2023/0090638 A1, Mar. 23, 2023
Int. Cl. B23Q 17/09 (2006.01); B23B 29/26 (2006.01)
CPC B23Q 17/0966 (2013.01) [B23B 29/26 (2013.01); B23Q 2717/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cutting machine for the chip-removing machining of a workpiece, which chip-removing machining takes place in a chronological sequence of manufacturing steps by using several required tools; wherein in each manufacturing step a required tool can exert a tool force onto the workpiece in a force main direction; the cutting machine comprising:
a tool holder configured for holding the required tools all at the same time, wherein the tool holder defines a plurality of recesses and at least one cavity;
a plurality of signal lines and a signal socket connected to the tool holder,
a tool slide configured for moving the tool holder so that one of the required tools can be aligned with a workpiece and the required tool and the workpiece can be moved with respect to each other for chip-removing machining in each manufacturing step;
wherein the tool holder includes a first fastening means and a second fastening means;
wherein the tool holder is fastened to the tool slide via the first fastening means and via the second fastening means;
wherein the tool holder fastened to the tool slide is spaced apart from the tool slide by a gap proximate the plurality of recesses;
wherein the tool holder includes at least two single-component force transducers;
wherein each of the at least two single-component force transducers is configured to measure a tool force exerted by one of the required tools during the chip-removing machining of a workpiece in the force main direction;
wherein each of the single-component force transducers is inserted into a respective one of the plurality of recesses;
wherein each of the single-component force transducers is electrically connected to the signal socket via a respective one of the plurality of signal lines;
wherein the plurality of signal lines is introduced into the cavity;
wherein the tool holder defines a plurality of first housing end faces and a plurality of second housing end faces; and
wherein the single-component force transducers inserted into the plurality of recesses are in planar contact to the tool slide via the second housing end faces proximate the recesses.