Machine tool unit with testing of bearing loads of the spindle during operation

The motor-driven machine tool unit with a rotating measuring element and sensor system addresses the challenge of monitoring spindle bearing loads and process forces, ensuring precise machining and timely maintenance through real-time data analysis.

WO2026125771A2 Publication Date: 2026-06-18FRANZ KESSLER GMBH
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
FRANZ KESSLER GMBH
Filing Date
2025-12-13
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing machine tool units face challenges in accurately measuring and monitoring spindle bearing loads and process forces during operation, leading to inaccurate machining and potential damage due to undetected bearing issues and vibrations.

⚗Method used

A motor-driven machine tool unit with a rotor unit and spindle shaft featuring a measuring element, such as a measuring ring, that rotates with the spindle shaft to detect displacements and deformations, combined with a sensor system to measure and analyze vibrations and forces, using algorithms to calculate axial and radial forces in real-time.

🎯Benefits of technology

Enables precise machining by providing real-time data for process optimization, predicting maintenance needs, and preventing spindle damage through continuous monitoring of spindle shaft conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a machine tool unit (1) comprising a stator unit (2) and a rotor unit (3) having a material measure (5) for detecting the rotational movement and / or displacement and / or deformation, and comprising a test device (12) for testing bearing loads, which is used to measure the working and process force of an action of force or to determine the displacement, deformation and movement during operation. For more precise machining, an axial sensor (6) and a sensor unit (7) are provided for determining the deformation and / or displacement on the basis of the position of the material measure (5) in the axial or radial direction and the phase relationship between the position of the rotor unit (3) or spindle shaft (4) or the phase relationship given by the force ratio of the acting forces, wherein the axial sensor (6) is arranged in such a way that it measures the deformation and / or displacement on the basis of the position of the material measure (6) in the axial direction.
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