How can the surface roughness of CNC processed aluminum alloy reach 0.8?
With a large diameter of the milling cutter plate, speed as high as possible, but the machine tool can not shock, coarse milling left 0.3-0.5mm margin for finishing, can be achieved depends on the milling cutter line speed is enough, blade sharp or not. To the diameter of the milling cutter disc is easy to achieve high line speed, light speed does not increase the milling cutter disc diameter effect is not good. This is generally able to achieve 0.8 roughness in addition, when finishing milling to add enough cutting fluid.
General CNC machining surface roughness is how much?
General ordinary machine tool processing is about 3.2, high-speed machine can reach 1.6 finish; Attention is to look at the tool and cutting parameters used in processing.
Is the smaller the surface roughness value, the finer it is?
1. About profilometer and roughness meter Profilometer and roughness meter are not the same product. The main function of profilometer is to measure the contour shape of the surface of parts.
For example, the groove of the groove in the car parts of the groove depth, groove width, chamfering (including chamfering position, chamfering size, Angle, etc.), the straightness of the cylindrical surface line and other parameters. In short, profilometer reflects the macro profile of parts.
2. The function of roughness meter is to measure the surface processing quality of grinding/finishing car processing process on the surface of parts. Generally speaking, it is not only the surface processing of parts (roughness of the old NATIONAL standard is called finish), that is, roughness reflects the microscopic condition of the surface of parts.