The small machining center is composed of many components. Under the load, each construction and joint must produce deformation. These deformations directly or indirectly cause the relative displacement between the tool and the workpiece. This unique size represents the whole machine Stiffness.

Therefore, the overall machine stiffness of a small machining center cannot be evaluated by the stiffness of a component, but refers to the overall ability of the entire machine tool to resist deformation under the static load, and the structural stiffness and contact stiffness at home and abroad A lot of research has been carried out. In the design, it is necessary to consider not only improving the stiffness of each part, but also considering the matching of the stiffness of the joint and the stiffness of each part.

Different components and joints contribute differently to the rigidity of the small cnc machining center. The design should be reasonably distributed or optimized to ensure that the machining center can work normally for a long time.

The stiffness of a small machining center refers to the ability of the machining center system to resist deformation, the force load and the dynamic load acting on the small machining center. The generation of these two forces tests the quality of life-long service of the machining center.

Forces that do not change with time, such as the impact vibration force and the laser cutting force, are called dynamic loads. Correspondingly, the stiffness of small machining centers can be divided into static stiffness and dynamic stiffness, the latter is part of the anti-vibration, the commonly referred to stiffness generally refers to the static performance of small machining centers (static stiffness of machine tools)