The basic parts of CNC milling machines usually refer to structural parts such as bed, column, beam, worktable, base, etc. which are large in size (commonly known as large parts), and constitute the basic frame of the machine tool. Other parts are attached to the base, and some need to move along the base. Since the base piece plays a supporting and guiding role, the basic requirement for the base piece is good rigidity.
Variable-frequency Drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. In CNC machine tools, the frequency converter is mainly used to control the action of the spindle.