Climb milling: It means that the cutting speed direction of the tool is the same as the moving direction of the workpiece.

Up milling: It means that the cutting speed of the tool is opposite to the moving direction of the workpiece.

Second, the discrimination method

When milling the outer contour of the workpiece, feeding clockwise along the outer contour of the workpiece and programming is clockwise milling, while programming and feeding counterclockwise along the outer contour of the workpiece is reverse milling; when milling the inner contour of the workpiece, the inner contour of the workpiece is milled Feeding and programming in the counterclockwise direction is down milling, and programming and feeding in the clockwise direction along the inner contour of the workpiece is up milling.