How to achieve 0.8 surface roughness of aluminum alloy for cnc machining?
Use a larger diameter milling cutter disc, rotating speed as high as possible, but the machine can not vibrate, rough milling to leave 0.3-0.5mm margin and then finish machining, can not be achieved depending on the milling cutter line speed enough, the blade sharp or not. To a larger diameter milling cutter disc is to easily reach high linear speed, light to increase the speed does not increase the diameter of the milling cutter disc effect is not good. Doing so is generally able to achieve 0.8 roughness in addition, the fine milling time to add sufficient cutting fluid.
What is the general CNC processing surface roughness?
General ordinary machine tools are processed out of about 3.2, high-speed machines can reach 1.6 finish; note that it depends on the tool and cutting parameters used in the processing.
The smaller the value of the surface roughness of the part, the finer it is?
1, about the contour meter and roughness meter Contour meter and roughness meter is not the same product, the main function of the contour meter is to measure the contour shape of the surface of the parts.
For example: the groove depth, groove width, chamfer (including chamfer position, chamfer size, angle, etc.) of the grooves in the automotive parts, the straightness of the cylindrical surface plain line and other parameters. In short, the contour meter reflects the macro profile of the part.
2, the function of the roughness meter is to measure the surface of the parts surface grinding / finishing process surface processing quality, in layman's terms, is the parts surface processing light or not (roughness of the old national standard called finish), that is, roughness reflects the microscopic situation of the parts processing surface.