Patent · US Active

Method and device for determining centers of a hollow shaft rotatably clamped as a workpiece in a machine tool

US12332052B2 · kind B2 · utility

0Cited by

4References

18Claims

0Family size

Assignee

NSH TECHNOLOGY GMBH · DE

Inventors

Reinhard Robotta · Erlau, DE
Moritz Halle · Chemnitz, DE
Klaus Kräher · Chemnitz, DE
Hans J. Naumann · Albany, US

Key dates

Filing date	Apr 8, 2021
Grant date	Jun 17, 2025
Priority date	—
Expiry date	Jan 13, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01B7/28
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A machine tool and a method for aligning a workpiece with an axis of rotation of the machine tool that accommodates the workpiece defined by a hollow shaft including an annular workpiece contour extending a length of the workpiece. The workpiece is clamped to a chuck and supported by clamping supports that engage the outer surface of the workpiece. A moveable tool carrier supports at least one sensor and is operable to position the sensor in proximity to the annular workpiece contour along its length. The sensor measures a distance between the sensor and the workpiece contour over a plurality of defined angles of the annular workpiece contour and at a plurality of locations along the length to obtain measurement data that is used to determine an approximated longitudinal central axis of the workpiece that is aligned with the axis of rotation of the machine tool.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.