Effect of Stiffness of Rolling Joints on the Dynamic Characteristic of Ball Screw Feed Systems in a Milling Machine

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td align="left">Modal orders</td><td align="center">1</td><td align="center">2</td><td align="center">3</td><td align="center">4</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">Measured results (Hz)</td><td align="center">279.0</td><td align="center">360.3</td><td align="center">396.4</td><td align="center">429.7</td></tr><tr><td align="left">Throretical results (Hz)</td><td align="center">281.9</td><td align="center">363.1</td><td align="center">388.6</td><td align="center">417.5</td></tr><tr><td align="left">Relative error (%)</td><td align="center">−1.03</td><td align="center">−0.77</td><td align="center">2.07</td><td align="center">2.92</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Comparison of theoretical natural frequencies and experimental natural frequencies.

Shock and Vibration

tab5

Table 5

Table 5: Effect of Stiffness of Rolling Joints on the Dynamic Characteristic of Ball Screw Feed Systems in a Milling Machine 