Patent · US Expired

Method and device for damping a chatter oscillation in a processing machine

US6886436B2 · kind B2 · utility

2Cited by

6References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gerhard Forster · Ulm, DE
Jens Hamann · Bad Mergentheim, DE
Dietmar Stoiber · Grünwald, DE

Key dates

Filing date	May 6, 2003
Grant date	May 3, 2005
Priority date	—
Expiry date	May 30, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T82/2595
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A device and a method are disclosed for attenuating a chatter oscillation in a processing machine, for example a cutting machine, such as a lathe. The machine includes at least one feed system with a primary section and a secondary section driven by a linear motor which can be powered via a converter. The device has a magnetic field control to control an in-phase component (d-component) of the magnetic field which produces the attractive force between of the primary section and the secondary section. An actual signal that is proportional to the chatter oscillation is generated and compared with a predetermined setpoint for a chatter oscillation. The comparison produces a control variable which is applied as a current setpoint to a field control that controls the current of the linear motor. This sufficiently attenuates chatter oscillations so that a reduction of the cutting depth is no longer required.

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