The design standards for CNC machining centers

A CNC machining center is a device used for processing metal sheet parts, molds, and enclosure components. It can perform various manufacturing processes such as drilling, milling, and boring, but its price is relatively high, and the production cost far exceeds that of traditional manual CNC lathes. Therefore, it is required that the machining center significantly reduces the processing time for individual products. Consequently, the design of the machining center is closely related to its processing efficiency and quality.

1. High static and dynamic performance. Vertical machining centers are expensive, and the cost of wear during production far exceeds that of traditional CNC lathes. This requires the CNC machine to greatly shorten the processing time.

2. Better static stiffness. For machining centers, the structural stiffness of components such as the bed, table, spindle box, and guide rails is closely related to the precision of the CNC machine. Therefore, these factors require the CNC machine to have high static stiffness.

3. Minimal thermal deformation. When a CNC machine performs cutting operations, it inevitably generates heat, which adversely affects the machine and causes varying degrees of thermal deformation in its parts, affecting the precision of the processed products. However, how to reduce and mitigate the impact of heat on the precision of processed products is a problem that needs to be considered.

4. Low friction between moving parts and elimination of transmission gaps. The movement of the cross slide table is measured in small increments, such as pulse units. When performing tool setting or other slow-speed operations, the table must respond accurately to commands from the CNC system, which are related to the friction of the moving parts.

5. Long service life and good precision retention. For vertical machining centers, the intake system is the guarantee for the service life of the CNC machine. Therefore, when selecting guide rails, spindle components, screws, etc., metal composite materials should be chosen to ensure that the machining center can maintain stable precision for a long time.

6. User-friendly design. To save time for clamping and tool changing, machining centers typically use multi-tool turrets and automatic tool changing devices to handle more issues with a single clamping. Therefore, during the clamping and tool changing process, manual control should be minimized to make the human-machine interaction interface clearer and neater.