An Analysis on Preload Increment and Displacement of a Rotating High Speed Spindle.

In this report, the effect of temperature rise of spindle bearing on the function of spindle is studied in order to solve the problem of heat generation and thermal displacement when using motor integrated spindles. In the case of constant pressure preload, axial displacement, due to rotation is analyzed. In the case of fixed position preload, preload increment was analyzed. Both cases are analyzed experimentally and theoritically.