In the field of mechanical parts processing industry, surface roughness is a very important index. So do you know how to choose the surface roughness when machining mechanical parts? Next, let me share with you!
Surface roughness is an important technical index reflecting the error of the microscopic geometry of the surface of the part, is the main basis for the inspection of the surface quality of the part; it is reasonable to choose or not, directly related to the quality of the product, service life and production costs. Mechanical parts surface roughness selection method has three kinds, namely, calculation method, test method and analogy method. In the mechanical parts design work, the most common application is the analog method, this method is simple, fast and effective.
Application of the analog method requires sufficient reference materials, the existing mechanical design manuals provide more comprehensive information and literature. The most commonly used is the surface roughness that corresponds to the tolerance level.
In general, the smaller the size tolerance requirements of mechanical parts, the smaller the surface roughness value of mechanical parts, but there is no fixed functional relationship between them. For example, some machines, instruments on the handle, hand wheel and health equipment, food machinery on the surface of some mechanical parts of the finishing, their surface requirements are processed very smooth that is, the surface roughness requirements are very high, but the size tolerance requirements are very low. Mechanical parts processing in general, there are dimensional tolerance requirements of the parts, the tolerance level and surface roughness values between or have a certain correspondence.
