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Machining technology of shaft parts about what? Nov 10, 2016

Shaft, which is one of the commonly used parts in machines, is also very important parts, it is able to support transmission components, and the ability to transmit torque.
Technical requirements for shaft and handle, for us, is to understand the content of a larger machine, that its content is what?
Then please read the following content.
The technical requirements for shaft parts, generally have the following several aspects:
1. diameter precision, geometrical precision
On the shaft, bearing shaft and fit journal is important, its diameter accuracy up to IT5-IT9 levels, and shape, the control should be within the diameter tolerance, and it asked for a precision higher than the diameter.
Position accuracy
If the axis is normal accuracy, then the radial runout, if you want to meet the support shaft of shaft neck, generally regarded as 0.01-0.03mm. High-precision axis 0.001-0.005mm. If you have special requirements, it should be stated clearly.
2. surface roughness
Because the machine precision, speed and other factors, resulting in surface roughness of shaft parts requirements are different. Bearing shaft surface roughness for 0.16-0.63um, with the journal for 0.63-2.5um.
3. the spindle material, stock and heat treatment
Shaft in commonly used material is steel 45, and by normalizing, annealing, tempering and quenching treatment to gain some strength, hardness, wear resistance and toughness.
For high speed shafts, the choice of alloy structural steel, which after heat treatment, can increase the wear and fatigue resistance.
Spindle blanks is the choice of forgings and bar, so you can reduce the amount of machining, but also can improve the mechanical properties of the material.