Power matching based dissipation strategy onto spindle heat generations

•Power inequality of spindle heat generations-dissipations related to thermal errors.•Realization method of power matching based spindle heat dissipation strategy.•Advantages of power matching based spindle heat dissipation strategy. To overcome the imbalance between spindle heat generation and diss...

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Bibliographic Details
Published in:Applied thermal engineering 2017-02, Vol.113, p.499-507
Main Authors: Liu, Teng, Gao, Weiguo, Tian, Yanling, Zhang, Dawei, Zhang, Yifan, Chang, Wenfen
Format: Article
Language:English
Subjects:
Bearings
Conduction cooling
Conduction heating
Conveying
Coolants
Cooling
Dissipation
Dissipation strategy
Heat exchange
Heat generation
Heat sources
Matching
Modelling
Motorized spindle unit
Power matching
Real time
Strategy
Thermal error
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Summary:•Power inequality of spindle heat generations-dissipations related to thermal errors.•Realization method of power matching based spindle heat dissipation strategy.•Advantages of power matching based spindle heat dissipation strategy. To overcome the imbalance between spindle heat generation and dissipation caused by existed spindle cooling strategies, this paper develops a power matching based cooling strategy for motorized spindle unit. Firstly, heat generation, conduction and dissipation are considered for the modeling of spindle structural heat exchange. This modeling methodology conveys that an operating motorized spindle unit will have satisfactory thermal behaviors only if the supply dissipation powers from recirculation coolants are dynamically and respectively equal to their corresponding heat generation powers (mainly from spindle bearings and motor). Based on this principle, the power matching between spindle heat generations and dissipations is realized by the real-time power estimations of spindle heat sources and the modified constant supply cooling powers strategy. It can be ultimately verified by experiments that the power matching based dissipation strategy is more advantageous than existed spindle cooling strategies in dissipation of spindle heat generations and decrease of thermal errors.
ISSN:1359-4311
1873-5606
DOI:10.1016/j.applthermaleng.2016.11.057