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

<table class="table-group" id="tab6"><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">Flexible connection (Hz)</td><td align="center">44.4</td><td align="center">49.4</td><td align="center">85.5</td><td align="center">98.2</td></tr><tr><td align="left">Rigid connection (Hz)</td><td align="center">66.8</td><td align="center">69.8</td><td align="center">160.0</td><td align="center">178.8</td></tr><tr><td align="left">Absolute error (Hz)</td><td align="center">22.4</td><td align="center">20.1</td><td align="center">74.5</td><td align="center">80.6</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Comparison of natural frequencies under the two modeling methods of joints.

Shock and Vibration

tab6

Table 6

Table 6: Effect of Stiffness of Rolling Joints on the Dynamic Characteristic of Ball Screw Feed Systems in a Milling Machine 