The industrial tool holder is a core functional component of CNC machine tools, primarily used for high-precision and high-efficiency clamping of cutting tools. It can precisely mate with the machine tool spindle, ensuring micron-level positioning and repeat accuracy, while its robust clamping mechanism guarantees machining safety. The tool holder transmits the spindle's rotational power to the tool without loss, and its internal channels can deliver coolant for efficient cooling and chip removal. When integrated with an automatic tool-changing system, it enables sub-second tool changes, significantly boosting productivity. Additionally, specialized tool holders (such as power holders and angle heads) can greatly expand the machining capabilities of the machine tool, serving as a critical link in achieving automated and integrated smart manufacturing.