ESTONIAN ACADEMY
PUBLISHERS
eesti teaduste
akadeemia kirjastus
cover
Estonian Journal of Engineering

Method for in situ runout measurement of large rolls; pp. 28–38

Full article in PDF format | doi: 10.3176/eng.2011.1.04

Authors
Panu Kiviluoma, Esa Porkka, Jukka Pirttiniemi, Petri Kuosmanen

Abstract
This work presents a method for in situ runout measurement of large cylindrical rotors, such as paper machine rolls. The method is based on an acceleration sensor attached to a sliding probe which is held against the rotating surface. Measured acceleration signal is averaged and double-integrated using a computer to get radial surface displacement, i.e., runout. Laboratory tests showed that, with this method, it is possible to measure runout with accuracy in the scale of a few micrometers. Measurements showed that, by using this method, it is possible to detect and measure phenomena like thermal bending or so-called polygon effect in running thermo rolls. These pheno­mena have not been reported to have been measured in situ before.
References

  1. Flack, R. D., Rooke, J. H., Bielk, J. R. and Gunter, E. J. Comparison of the unbalance responses of Jeffcott rotors with shaft bow and shaft runout. J. Mech. Design, Trans. ASME, 1982, 104, 318–328.
doi:10.1115/1.3256346

  2. Charles, J. A. Diagnostic tools for Yankee dryers. In Proc. 2000 TAPPI Engineering Con­ference. Atlanta, Georgia, USA, 2000, CD-ROM.

  3. Tian, G. Y., Zhao, Z. X., Baines, R. W. and Corcoran, P. Blind sensing. Manufact. Eng., 1997, 76, 179–182.
doi:10.1049/me:19970414

  4. Kuosmanen, P. Predictive 3D Grinding Method for Reducing Paper Quality Variations in Coating Machines. Helsinki University of Technology, Espoo, 2004.

  5. Juhanko, J. Dynamic Behaviour of a Paper Machine Roll. Thesis, Helsinki University of Technology, Espoo, 1999.

  6. Kiviluoma, P. Method and Device for in situ Runout Measurement of Calender Thermo Rolls. Helsinki University of Technology, Espoo, 2009.

  7. Möhle, H., Buschmann, G. and Müller, G. Vibrationen an Papierrollmaschinen. Papier, 1970, 24, 845–850.

  8. Järvinen, V., Miettinen, J., Keskinen, E., Cotsaftis, M. and Hirvonen, M. Wireless sensing system for modal testing of rolling cylinders. In Proc. SEM Annual Conference on Experimental and Applied Mechanics. Portland, Oregon, 2001, 1–4.

  9. Wirtz, W. Advanced thermo rolls for high speed modern calenders. In Proc. 7th International Conference on New Available Technologies. Stockholm, 2002, CD-ROM.

10. Zaoralek, M. Improved high temperature calender roll. In Annual Meeting, Technical Section, Canadian Pulp and Paper Association. Preprints, B, 1991, 107–110.

11. ISO Guide to the Expression of Uncertainty in Measurement. International Organization for Standardization, Geneva, 1993.
Back to Issue