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Suitability of integrated sensors for the determination of chatter characteristics in a cylindrical grinding machine

  • Berend Denkena
  • Tobias Ortmaier
  • Benjamin Bergmann
  • Per SchreiberEmail author
  • Markus Ahrens
  • Jens Damm
ORIGINAL ARTICLE
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Abstract

Wheel-sided chatter vibration is a limiting factor in terms of productivity and surface finish regarding the application of conventional grinding wheels. Due to the formation of waviness on the grinding wheel during the process, many expensive trueing cycles are necessary. Therefore, a system for chatter detection and elimination for external cylindrical grinding machines was presented in previous work. It was demonstrated that an electromagnetic actuator reduces the generation of the grinding wheel waviness. The control of this actuator requires precise knowledge about frequency, amplitude, and phase of the chatter vibration. This information is extracted from two eddy-current sensors, which measure the workpiece displacement. However, a direct measurement of the workpiece displacement restricts the working area and is inflexible. Hence, this paper explores the qualification of sensors integrated into the grinding machine for extracting the aforementioned information with high accuracy of phase. For this purpose, two acceleration sensors mounted on the workpiece spindle and the tailstock, an acoustic emission (AE) sensor applied to the grinding wheel, and the motor current of the directly driven headstock spindle are considered. To determine the suitability of these sensors, the frequency response function (FRF) for each sensor is calculated under three conditions: no contact between the workpiece and the grinding wheel, the grinding wheel tensed to the workpiece without a grinding process, and during the process. The method for the in-process measurement of the sensor FRFs and the influence of the contact conditions on these FRFs is shown in this paper.

Keywords

Monitoring Plunge grinding Grinding chatter 

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Notes

Funding information

The authors would like to thank the German Research Foundation (DFG) for their support and funding of the associated project within the Project DE447/89.

References

  1. 1.
    Wegener K, Hoffmeister H-W, Karpuschewski B, Kuster F, Hahmann W-C, Rabiey M (2011) Conditioning and monitoring of grinding wheels. CIRP Ann Manuf Technol 60(2):757–777CrossRefGoogle Scholar
  2. 2.
    Altintas Y, Weck M (2004) Chatter stability of metal cutting and grinding. CIRP Ann Manuf Technol 53(/2):619–642CrossRefGoogle Scholar
  3. 3.
    Aurich J, Linke B, Hauschild M, Carrella M, Kirsch B (2013) Sustainability of abrasive processes. CIRP Ann Manuf Technol 62(/2):653–672CrossRefGoogle Scholar
  4. 4.
    Badger J, Murphy S, O’Donnell G (2011) The effect of wheel eccentricity and run-out on grinding forces, waviness, wheel wear and chatter. Int J Mach Tools Manuf 51(10–11):766–774CrossRefGoogle Scholar
  5. 5.
    Tönshoff HK, Kemmerling M, Tellbüscher E (1985) Quick actuators: new possibilities and applications. CIRP Ann Manuf Technol 34(/1):515–518CrossRefGoogle Scholar
  6. 6.
    Hoshi T, Matsumoto S, Mitsui S (1986) Suppression of wheel regenerative grinding vibration by alternating wheel speed. Ann CIRP 35(12):231–234CrossRefGoogle Scholar
  7. 7.
    Spur G, Rogel E (1984) Optimierung des dynamischen Schleifprozesses durch Periodische Drehzahlvariation. Zeitschrift für wirtschaftliche Fertigung 79(/7):337–343Google Scholar
  8. 8.
    Cuntze, E.O. (1966) Entstehung und Minderung von Ratterschwingungen beim Schleifen, Dr.-Ing. Dissertation, TH BraunschweigGoogle Scholar
  9. 9.
    Gosebruch H (1987) Active damping of dynamic interactions in grinding machines. In: Inman, D. J. (ed.) Vibration control and active vibration suppression: presented at the 1987 ASME Design Technology Conferences-11th Biennial Conference on Mechanical Vibration and Noise, Boston, Mass., Sep 27-30, 4:147–152Google Scholar
  10. 10.
    Michels, F (1999) Stabilisierung des Schleifprozesses mit aktiven Systemen, Dr.-Ing. Dissertation, RWTH AachenGoogle Scholar
  11. 11.
    Ahrens M, Fischer R, Dagen M, Denkena B, Ortmaier T (2014) Active chatter damping in plunge grinding using magnetic actuators, Proceedings of the ASME 2014 International Manufacturing Science and Engineering Conference, MSEC2014, June 9-13, Detroit, Michigan, USAGoogle Scholar
  12. 12.
    Ahrens M, Fischer R, Dagen M, Denkena B, Ortmaier T (2013) Abrasion monitoring and automatic chatter detection in cylindrical plunge grinding. Procedia CIRP 8:374–378CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Berend Denkena
    • 1
  • Tobias Ortmaier
    • 2
  • Benjamin Bergmann
    • 1
  • Per Schreiber
    • 1
    Email author
  • Markus Ahrens
    • 2
  • Jens Damm
    • 1
  1. 1.Institute of Production Engineering and Machine ToolsLeibniz Universitaet HannoverGarbsenGermany
  2. 2.Institute of Mechatronic SystemsLeibniz Universitaet HannoverHannoverGermany

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