(1) Curve contour on the workpiece, straight line, arc, thread or spiral curve, especially non-circular curve and list curve given by mathematical expressions.
(2) The spatial curve or surface of the mathematical model has been given.
(3) Although the shape is simple, it has many sizes and difficult to detect.
(4) The inner cavity, box interior, etc., which are difficult to observe, control and detect when machining with ordinary machine tools.
(5) There are holes or planes with strict size requirements.
(6) A simple surface or shape that can be processed in a single pass.
(7) The general processing content of CNC milling can effectively improve productivity and reduce labor intensity.
The main processing objects suitable for CNC milling are the following categories: plane contour parts, variable bevel parts, space curved surface contour parts, holes and threads.