How to choose the CNC machining method of aluminum cavity?

The aluminum cavity CNC machining of mechanical parts is composed of basic surfaces such as plane, outer cylindrical surface, inner cylindrical surface or curved surface, and forming surface due to various structural shapes. The specific choice of CNC machining method for aluminum cavity should be based on factors such as the machining accuracy, surface roughness, material, structural shape, size and production type of the part, so how to choose the CNC machining method?

1. The choice of the outer surface processing method of CNC machined parts

The main processing methods of the outer surface are turning and grinding. When the surface roughness is required to be small, it is necessary to carry out smoothing processing. The closest processing plan can be selected according to the processing surface requirements, the structural characteristics of the parts, the production type, the blank type and material properties, the size, the geometric accuracy and the surface roughness requirements, and the on-site equipment and other conditions.

2. The choice of CNC machining plane processing method

The main processing methods of planes are milling, planing, turning, grinding and broaching, etc. The planes with high precision require frequent grinding or scraping.

3. The choice of CNC machining inner hole surface machining method

The inner hole surface processing methods include drilling, reaming, boring, drawing, grinding and finishing. Commonly used hole processing programs should be selected reasonably according to the processing requirements, size, specific production conditions, batch size, and whether there are pre-made holes on the blanks and other conditions of the processed holes.

4. Selection of plane contour processing method

Plane contours are mostly composed of straight lines and arcs or various curves, and three-coordinate CNC milling machines are usually used for two-axis semi-coordinate machining.