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Main Title: Monitoring of slowly progressing deterioration of computer numerical control machine axes
Author(s): Uhlmann, Eckart
Geisert, C.
Hohwieler, E.
Type: Article
Language Code: en
Abstract: The feed axes of computer numerical control (CNC) grinding machine tools are among the most mechanically stressed components of machine tools owing to the high process forces and rough manufacturing environment which they encounter. The resulting wear and tear depends strongly on the product range and the manner of machine operation. To counteract a functional deficiency of these central machine units, the current usual approach is preventive maintenance. The manual inspection of feed axes is complex and time consuming. A complicating matter is that the deterioration normally progresses very slowly and depends on the position of the stress along the axis. Existing approaches to automated estimation of the ‘health status’ of feed axes do not take this factor into account. This paper presents a procedure that addresses this gap. During simple test routines, the drive current, axis position, and feed rate are recorded. With the help of additional machine data, characteristic values are computed directly at the computer of the human—machine interface (HMI). The results are then transferred to and stored on a database server at the machine manufacturer. This approach enables the service technician to trace the progression of the axes’ ‘health status’ over a long time. This approach makes it possible to detect trends in the characteristic values at an early point in time. This leads to a better planning of necessary maintenance actions adapted to the remaining lifetime of the wearing component.
Issue Date: 2008
Date Available: 8-Jan-2019
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): condition monitoring
wear and tear
feed axes
Journal Title: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Publisher: SAGE Publications
Publisher Place: Washington, DC
Volume: 222
Issue: 10
Publisher DOI: 10.1243/09544054JEM1040
Page Start: 1213
Page End: 1219
EISSN: 2041-2975
ISSN: 0954-4054
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:FG Flugmechanik, Flugregelung und Aeroelastizität » Publications

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