Technical requirements for CNC precision cnc machining-processing of shaft parts
First: dimensional accuracy, the journal is the main surface of the shaft parts, it affects the rotation accuracy and working status of the shaft. The diameter accuracy of the journal is usually IT6 to 9 according to its use requirements, and the precision journal can reach IT5.
Second: the geometric accuracy, the geometric accuracy of the journal (roundness, cylindricality) should generally be limited to the diameter tolerance point. When the geometric accuracy is required to a high degree, the allowable tolerances can be separately specified on the part drawing.
Third: The machining position and accuracy mainly refer to the coaxiality of the mating journal of the assembly transmission part relative to the supporting journal of the assembly bearing, which is expressed by the radial circular runout of the mating journal to the supporting journal; The use requirements stipulate that the high-precision shaft is 0.001 to 0.005mm, and the general precision shaft is 0.01 to 0.03mm. In addition, there is the coaxiality of the inner cylindrical surface and the perpendicularity requirements of the axial positioning end face and the axial line.
Fourth: Surface roughness. Depending on the surface working part of the part, there may be different surface roughness values. For example, the surface roughness of the spindle bearing journal of an ordinary machine tool is Ra0.16 ～ 0.63um, which matches the surface roughness of the journal. The degree is Ra0.632.5um. As the machine's operating speed increases and precision increases, the surface roughness requirements of shaft parts will also become smaller and smaller.
Shanghai Jindong Metal Products Co., Ltd. specializes in manufacturing non-standard metal parts and components. It has accumulated many years of technical experience in manufacturing precision parts of stainless steel, titanium, aluminum and other metals ranging from ￠ 0.5- ￠ 20mm.
Our main products include: non-standard micro components, stainless steel components, medical equipment accessories, lighting accessories, fasteners, connectors, instrumentation accessories, shaft sleeves, fiber optic connectors, lc tail handle, sc tail handle, There are more than 200 varieties of high-standard, high-quality and clean products for civil and military use, such as precision mechanical parts, optical fiber communication accessories, screw nuts, electronic product accessories, copper and aluminum rivets, etc., for customers to choose. In addition, we can also manufacture products that satisfy our customers according to their different requirements.