What is the mechanical processing technology of shaft parts? , Nanjing Precision Engineering Co., ltd

by:NJPE     2020-01-09

Shaft parts, which are one of the commonly used parts in machines, are also very important parts.  They can support the transmission parts and transmit torque. For us, the technical requirements and treatment of shaft parts are about large-scale precision machining.  What is its specific content? Then please look at the following content. The technical requirements for shaft parts generally include the following aspects: 1. Diameter accuracy and geometric shape accuracy are very important for supporting Journal and mating journal on the shaft.  Its diameter accuracy is IT5- IT9 grade, and the shape accuracy should be controlled within the diameter tolerance, and its requirements are higher than the diameter accuracy. Mutual position accuracy if the shaft is of ordinary accuracy, then its radial circle beats.  If it is to match the shaft neck with the supporting shaft neck, it is generally regarded as 0. 01-0. 03mm. The high precision shaft is 0. 001-0. 005mm. If there are special requirements, it should be clearly stated. 2. Surface roughness due to factors such as machine precision and running speed, the requirements for surface roughness of shaft parts are also different. The surface roughness of the supporting shaft neck is 0. 16-0. 63um, with the journal is 0. 63-2. 5um. 3. Among the materials, blanks and heat-treated shaft parts of the main shaft, 45 steel is commonly used, and through normalizing, annealing, quenching and tempering, quenching and quenching, etc, so as to obtain certain strength, hardness, wear resistance and toughness. For shaft parts with high rotating speed, alloy structural steel can be selected because it will improve wear resistance and fatigue resistance after heat treatment. The blank of the main shaft is generally made of forgings and round steel, which can reduce the cutting amount and improve the mechanical properties of the material.
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