1. The vertical machining center has a higher static and dynamic style. Vertical machining centers are more efficient than conventional machine tools, which requires measures to significantly reduce the machining time of individual parts. The compression time includes two aspects: on the one hand, the development of new tool materials, such as the exponential increase in cutting speed, greatly restores the official cutting time; On the other hand, the operation is modified with an automatic tool change system, which greatly reduces the auxiliary time. These measures have greatly improved production efficiency and achieved good economic benefits, but the design structure has also significantly increased the load of machine tools and machining centers, considering these, so its basic large parts usually adopt a closed box structure, reasonable arrangement of reinforcement plates and reinforcement parts to effectively contact En, Jingen. In addition, adjusting the quality of the parts may change the natural vibration frequency of the system, and increasing the damping can improve the damping characteristics of the machine tool, which is an effective measure to improve the dynamic behavior of the machine tool.

2. The vertical machining center has static rigidity. The structural stiffness of the machine bed, guide rail, table, tool holder and spindle box will affect its own geometric accuracy, and due to the deformation of these factors, CNC machine tools are required to have high static rigidity. The vibration in the cutting process not only directly affects the machining accuracy and surface quality of the part, but also reduces the tool life, affects the continuous operation of the machining center, and cannot be artificially adjusted during the machining process (such as changing the cutting amount or changing the tool geometry) to eliminate or reduce the vibration, therefore, the dynamic stiffness of the machining center must also be improved.

3. The thermal deformation of vertical machining center is small. In the process of internal and external heat such as cutting heat and friction heat in the machining center, the parts will produce different degrees of thermal deformation, which will affect the accuracy of the work. Because the spindle speed, feed speed and cutting amount of the machining center are greater than the traditional machine tools, and the process is automated, it is often continuous processing, and the temperature rise is controlled by the heat generated by liquid cooling, cold purchase and other methods; The machine structure is improved so that the thermal deformation of the part occurs in a non-error-sensitive direction.
4. The friction of the moving parts of the vertical machining center is small, and the gap of the transmission system is eliminated. The displacement of the machining center table is measured in the minimum unit of pulse equivalent, in the case of the knife, the speed of movement. This requires the table to accurately respond to the instructions issued by the numerical control device, which is related to the friction characteristics of the moving parts, the machining center adopts rolling guides, the static friction of the rolling guides is small, and under the action of lubricating oil, the friction decreases with the increase of speed, effectively avoiding the phenomenon of low-speed crawling, thereby improving the machining centering and positioning accuracy. The use of ball screws instead of sliding lead screws in feed systems is based on the same principle. In addition, pulse compensation devices are used for pitch compensation, clearance drive systems, and some machine tools without clearance transmission pairs.

5. The vertical machining center has high service life and good precision retention. A good lubrication system ensures the service life of the vertical machining center, and the guide, feed screw and spindle components are all equipped with new wear-resistant centers, which can maintain good accuracy during long-term use.