A vertical machining center is a multi-functional machine tool for machining workpieces, with its spindle axis set perpendicular to the worktable. It typically has two linear motion axes and a rotary table that rotates along a horizontal axis on the worktable, allowing it to machine helical parts. Vertical machining centers generally have a fixed column structure, a rectangular worktable, and no indexing or rotation function. They are suitable for machining disc, sleeve, and plate-shaped parts, and can also machine molds and small, complex shell-like parts.