Vertical Machining Center Mainly used for machining complex parts, such as plates, discs, molds, and small housings. Vertical Machining Center It can perform milling, boring, drilling, tapping, and thread cutting. It is more expensive and has much higher processing costs than traditional machine tools, requiring measures to significantly reduce the processing time per piece. Good design contributes to the machining efficiency and quality of the vertical machining center.

1. High static and dynamic stiffness

  Vertical Machining Center It is expensive and the processing cost is much higher than that of traditional machine tools. This requires measures to greatly reduce the processing time of a single piece. Compressing the processing time of a single piece involves two aspects: on the one hand, developing new cutting tool materials, such as doubling the cutting speed and greatly reducing the cutting time; on the other hand, using an automatic tool changer system can speed up operations such as tool changing, thus greatly reducing auxiliary time. These measures greatly improve productivity and achieve good economic benefits, but also significantly increase the load and running time of the machine tool. Tihao Machinery mainly produces rotating top needles, tool holders, screws, machine tool spindles, shaft machining, non-standard parts machining, and machine tool connecting rods. These factors should be considered when designing the structure of the machining center. Therefore, large bases usually adopt a closed box-type structure, reasonably arrange stiffening ribs, enhance the contact tolerances of various parts, and effectively improve the static tolerance of the machine tool. In addition, adjusting the quality of the components may change the natural frequency of the system. Increasing damping can improve the damping characteristics of the machine tool, which is an effective measure to improve the dynamic stiffness of the machine tool.

2. Static Stiffness

The structural stiffness of the machine tool, guide rails, worktable, tool holder, and spindle box will affect its own geometric accuracy and errors caused by deformation. These factors put higher demands on the static stiffness of CNC machine tools. Vibration during the cutting process not only directly affects the machining accuracy and surface quality of the parts, but also reduces the tool life and affects productivity. The machining center operates continuously, and it is impossible to eliminate or reduce vibration by manual adjustment (such as changing cutting parameters or changing tool geometry). Therefore, it is necessary to improve the dynamic stiffness of the machining center.

3. Less Thermal Deformation

The machining center is affected by internal and external heat sources (such as cutting heat and friction heat) during processing, and various parts will undergo different degrees of thermal deformation, affecting the machining accuracy of the workpiece. Because the spindle speed, feed rate, and cutting amount of the machining center are greater than those of traditional machine tools, the process is automatic and usually continuous, and the heat generated is controlled by effective liquid cooling and cold purchase. Improve the structure of the machine tool so that the thermal deformation of the components occurs in a non-error-sensitive direction. For example, the vertical column of a horizontal machining center adopts a symmetrical frame-type double-column structure. Thermal deformation will produce translational motion in the upward direction of the spindle axis, and this translational motion can be compensated by coordinate correction to reduce heat generation and separate the heat source from the main body as much as possible.