Automatic Thermal Expansion Compensation of the Precise Grinding Machine AMB Spindle

De Guang Li; Shu Qin Liu; Bin Bian

doi:10.4028/www.scientific.net/AMM.130-134.3221

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Automatic Thermal Expansion Compensation of the...

Automatic Thermal Expansion Compensation of the Precise Grinding Machine AMB Spindle

Abstract:

Thermal expansion of the magnetic bearings in the process of precise grinding will lead to the posture drift of the grinding head, which can seriously affect the precision of the grinding. In this paper, the module of the relationship between temperature rise and the spindle posture is established, and the relationship between the controller’s five reference inputs and the spindle posture is ascertained. The controller’s five reference inputs are corrected according to the sample value of the temperatures in the system, so the inline adjustment of the grinding head posture and the automatic thermal expansion compensation of the system can be realized. Experiment proved that this algorithm could successfully compensate the thermal expansion of the AMB spindle.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

3221-3224

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.3221

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Online since:

October 2011

Authors:

De Guang Li, Shu Qin Liu, Bin Bian

Keywords:

AMB Spindle, High-Precision Grinding, Inline Compensation, Thermal Expansion

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