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Mechanical processing of shaft parts

by:Xavier      2020-06-30

we know shaft parts is one of the most commonly used parts of the machine, it is also one of important parts, because it concerns the support and transmission torque of driving part, then the shaft parts is how to realize the machining? Below by our to introduce for everybody:

the first thing to understand the technical requirement of shaft parts and processing requirements, what are the technical requirements for general axial parts? Let's look at in detail:

1, the diameter of accuracy and geometric accuracy

on the shaft, supporting shaft neck and cooperate with the journal is very important, its diameter precision for IT5 & ndash; IT9 level, and shape accuracy, should be controlled within the diameter tolerance, and it demands than the diameter of high precision.

2, position accuracy of

if the shaft is common precision, then its radial round beating, if you want to cooperate with journal of supporting shaft neck, generally regarded as 0. 01 - 0. 03mm。 And high-precision shaft of 0. 001 - 0. 005mm。 If you have special requirements, so should be marked clearly.

3, surface roughness,

because machines degree of precision, speed and other factors, causing the surface roughness of the shaft parts requirements are also different. The surface roughness of the supporting shaft neck is 0. 16 - 0. 63 um, journal of 0. 63 - 2. 5um。

4, the main shaft of the material, casting and heat treatment

axial parts, the commonly used material is 45 # steel, and by normalizing, annealing, hardening and hardening processing, such as to obtain a certain strength, hardness, wear resistance and toughness.

for shaft parts speed is high, can choose alloy structural steel, because it is after heat treatment, can improve the wear resistance and fatigue resistance. Main shaft blank is generally choose forgings and round steel, thus reducing cutting processing capacity, and can improve the mechanical properties of materials.

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