| The choice of mechanical parts surface roughness |
| Data: 2012/11/28 Hit: 5831 |
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Surface roughness is reflected parts surface micro geometry error is an important technical indicators, is inspection parts surface quality of main basis; It choose the reasonable or not, is directly related to the quality of the products, service life and cost of production. Mechanical parts surface roughness and the method of selection of three kinds, namely method, test method and analogy method. In the mechanical parts design work, the application of the most common is the analogy method, this method is simple, rapid and effective. Application of analogy method need to have plenty of references, the existing various mechanical design manual provides more comprehensive information and literature. The most commonly used is to adapt and tolerance grade of surface roughness. Normally, the mechanical parts size tolerance requirement is smaller, the mechanical parts' surface roughness value is smaller, but also between them and does not exist fixed function relation. Such as some machines, instrument on the handle, the handwheel and health equipment, food machinery of some mechanical parts of the modified surface, their surface request processing is very smooth surface roughness requirement is high, but its size tolerance requirement is very low. Be in usually, have size tolerance requirements of the parts, the tolerance grade and surface roughness values are between the corresponding relationship.
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