For X-axis correction, slightly loosen the four bolts, but it is necessary to determine that there is still some friction resistance on the four bolts. At this time, use the head rotation bolt to adjust the left and right angles. During the process, a dial indicator must be placed on the spindle end face to measure the correct position of the workbench.

For Y-axis correction, slightly loosen the 3 bolts, but ensure that the 3 bolts are not too loose to facilitate fine adjustment. At this time, use the arm to rotate the bolt and place a dial indicator on the spindle end face to measure the correct position of the workbench.

Milling refers to the use of rotating multi edge cutters to cut workpiece, which is an efficient processing method. When working, the tool rotates (as the main motion), the workpiece moves (as the feed motion), and the workpiece can also be fixed, but at this time, the rotating tool must also move (completing both the main motion and the feed motion). Milling machines include horizontal or vertical milling machines, as well as large gantry milling machines. These machines can be ordinary or CNC machines. Machining using a rotating milling cutter as a cutting tool. Milling is generally performed on a milling or boring machine, suitable for machining flat surfaces, grooves, various shaped surfaces (such as splines, gears, and threads), and special shaped surfaces of molds.