Limiting precision distortions in spindle unit of HSC machining centre

• Autorzy: Jędrzejewski J. , Kwaśny W. , Modrzycki W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents causes of excessive precision distortions, appearing in electrospindles of HSC machining centres. The influence of changing ambient temperature is shown, as well as the precision of its modelling. Phenomena, which appear in the electrospindle unit during large rotational speed changes, have been presented and the functioning of bearing loading sleeve has been shown, which has the task of compensating thermal expansions of a spindle. Conditions of proper functioning of the sleeve have been presented, which should assure minimal displacements of a spindle. Also, possibilities of increasing bearing life span have been pointed out.

Słowa kluczowe

EN

HSC; machine tool; precision; distortion

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2008
• Tom: Vol. 8, No. 1
• Strony: 44--53
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Jędrzejewski J.

• Wrocław University of Technology, Institute of Production Engineering and Automation, ul. Łukasiewicza 5, 50-371 Wrocław, Poland

autor

Kwaśny W.

• Wrocław University of Technology, Institute of Production Engineering and Automation, ul. Łukasiewicza 5, 50-371 Wrocław, Poland

autor

Modrzycki W.

• Wrocław University of Technology, Institute of Production Engineering and Automation, ul. Łukasiewicza 5, 50-371 Wrocław, Poland

Bibliografia

• [1] JĘDRZEJEWSKI J,. MODRZYCKI W., KOWAL Z., KWAŚNY W., WINIARSKI Z., Precise modelling of HSC machine tools thermal behaviour. Journal of Achievements in Materials and Manufacturing Engineering, Vol. 24,No 1, 2007, 245-252.
• [2] JĘDRZEJEWSKI J,. MODRZYCKI W., Compensation of thermal displacement oh high speed-precision machine tools. Journal of Machine Engineering, vol. 7, No 1, 2007, 108-114.
• [3] SENDA H., SATO R., MORIWAKI T., Estimation of thermal displacement of machine tool spindles for mass production (Part 1). Transaction of the Japan Society of Mechanical Engineers, Vol. 70, No 698,2004, 2961-2965.
• [4] SENDA H., SATO R., MORIWAKI T., Estimation of thermal displacement of machine tool spindles for mass production (Part 2). Transaction of the Japan Society of Mechanical Engineers, Vol. 71, No 709,2005, 281.3-2818.
• [5] WECK M., SPACHTHOLZ G., 3- and 4-Contact Point Spindle Beurinns - a new Approach for High Speed Spindle Systems, Annals of the CIRP, 2003, 52/1, 311 -316.
• [6] http://www.rotoprecision.ca. SNFA Super Precision Angular Contact Bearings.