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Dynamic model of CNC carving and milling machine tool
by：Transon
2020-07-24
The whole CNC carving and milling machine tool exists two separate vibration system:
( 1) Give priority to with CNC carving and milling machine table, including rolling guide and ball screw workbench system; ( 2) Including the vertical board, cross slide board system, beams and columns.
because of the influence of damping on the system's inherent frequency is small, so there was no mechanical model considering damping, the main research of rolling guide and ball screw stiffness effect on natural frequencies. Therefore, can be set up as shown in figure 1, 2, CNC carving and milling machine workbench system and skateboard mechanics model of the system.
figure 1 CNC carving and milling machine table space mechanics model figure
in figure 1, Kx, Ky, Kz said table corresponding to the direction of the three equivalent stiffness. Figure 2, the M1 for board, vertical M2 for cross slide, M3 said beam column section, K1 and K2 said M1 and M2 respectively, the equivalent stiffness between M2 and M3.
figure 2 CNC carving and milling machine tool slide system mechanics model diagram ( A single direction)
( 1) Give priority to with CNC carving and milling machine table, including rolling guide and ball screw workbench system; ( 2) Including the vertical board, cross slide board system, beams and columns.
because of the influence of damping on the system's inherent frequency is small, so there was no mechanical model considering damping, the main research of rolling guide and ball screw stiffness effect on natural frequencies. Therefore, can be set up as shown in figure 1, 2, CNC carving and milling machine workbench system and skateboard mechanics model of the system.
figure 1 CNC carving and milling machine table space mechanics model figure
in figure 1, Kx, Ky, Kz said table corresponding to the direction of the three equivalent stiffness. Figure 2, the M1 for board, vertical M2 for cross slide, M3 said beam column section, K1 and K2 said M1 and M2 respectively, the equivalent stiffness between M2 and M3.
figure 2 CNC carving and milling machine tool slide system mechanics model diagram ( A single direction)
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