Abstract
The spindle error contributes to 25 percent of the error sources of the work piece in- accuracies. The 70 percent of the spindle errors are due to thermal errors that occurs in the spindle. The heat generation in high-speed built-in motorized spindle is of important concern in high speed machining. It is necessary to predict the heat generation in spindle body virtually so as to judge machine capability. The thermal prediction will also help in taking precautions to avoid inaccurate parts being produced as well to avoid the chances of bearing seizure leading to catastrophic failure of spindle. In this paper the thermal behavior of high-speed motorized spindle is investigated through three dimensional analysis and experimentation validation is given for the same.
Highlights
The metal cutting machine device showcase has put the machine-tool developers to make more adaptable machines at focused cost
There are a few uncontrollable and unpredictable components that are hard to account for during design stage. These will cause error in spindle position by deforming it and parts produced will be defective. One of such uncontrollable component is the thermal errors in high speed spindle
The spindle used for the analysis is 4.7kW, 40000 rpm, oil cooled high-speed motorized spindle
Summary
The spindle error contributes to 25 percent of the error sources of the work piece in- accuracies. The 70 percent of the spindle errors are due to thermal errors that occurs in the spindle. The heat generation in high-speed built-in motorized spindle is of important concern in high speed machining. It is necessary to predict the heat generation in spindle body virtually so as to judge machine capability. The thermal prediction will help in taking precautions to avoid inaccurate parts being produced as well to avoid the chances of bearing seizure leading to catastrophic failure of spindle. In this paper the thermal behavior of high-speed motorized spindle is investigated through three dimensional analysis and experimentation validation is given for the same. CNC machine tool, high- speed motorized spindle, thermal error, finite element simulation
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