Abstract
In order to solve the problem of thermal errors in the spindle system of high precision computer numerical control (CNC) machine tools, a novel active control method for spindle thermal deformation was proposed. Besides, a helical coil cooler was designed, the influence of silicone grease thickness on the contact thermal resistance between a spindle and a cooler was analyzed, and a thermal resistance model was established. Based on the simplified spindle system, a thermal-fluid-solid finite element model was constructed, and the cooling parameters were simulated. The finite element model was verified by using a temperature control system. The results show that the finite element model can effectively predict the variation of thermal characteristics of the spindle system. The cooler has a high heat exchange efficiency, the thermal equilibration time is reduced by 68%, and the thermal error is reduced by 19%. This study provides a new idea for thermal error control of precision machine tool spindle.
| Translated title of the contribution | A New Thermal Error Control Method for Spindle System of High Precision Computer Numerical Control Machine Tools |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1165-1171 |
| Number of pages | 7 |
| Journal | Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University |
| Volume | 54 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2020 |
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