The machine tool body includes the main moving parts, feed moving parts, executive parts, base, column, tool rest, workbench and other basic parts of the machine tool. CNC machine tool is a kind of high-precision, high-efficiency and highly automated machine tool, which requires that the mechanical structure of the machine tool should have high precision and stiffness, good accuracy retention, and high motion accuracy of main motion and feed motion parts. The feed transmission system of machine tools generally adopts precision ball screws, precision rolling guide rail pairs and sliding guide rail pairs with good friction characteristics to ensure the sensitivity and accuracy of the feed system. It can be said that the machine tool body structure with high precision and high stiffness is the foundation to ensure the efficient, high precision and highly automated machining of CNC machine tools.
