Shaft parts, which are one of the common parts in machines, are also very important parts, which can play a supporting role for transmission parts and can transmit torque. So do you know what the mechanical processing technology of shaft parts is about? Let me share with you next!
The technical requirements and processing of shaft parts is an important thing for us to know about large machining, so what exactly is it about? Then please see the following content.
Shaft parts technical requirements, generally have the following aspects, for.
1. Diameter accuracy, geometric shape accuracy
On the shaft, the support journal and fit journal is very important, its diameter accuracy is IT5-IT9 level, and shape accuracy, should be controlled within the diameter tolerance, and its requirements are higher than the diameter accuracy. If the shaft is ordinary accuracy, then its radial circular runout, if it is to fit journal to support journal, is generally regarded as 0.01-0.03mm. while the high accuracy shaft is 0.001-0.005mm. if there is special requirement, then it should be specified clearly.
2. Surface roughness
Because of the machine precision, running speed and other factors, the surface roughness requirements of shaft parts are also different. The surface roughness of the bearing journal is 0.16-0.63um, and that of the mating journal is 0.63-2.5um.
3. Spindle materials, blanks and heat treatment
The commonly used material for shaft parts is 45 steel, which is normalized, annealed, tempered and quenched to obtain certain strength, hardness, wear resistance and toughness. For high speed shaft parts, alloy structural steel can be used, because it will improve wear resistance and fatigue resistance after heat treatment.
The blank of the spindle is generally chosen from forgings and round steel, which can reduce the amount of cutting and machining, and can improve the mechanical properties of the material.
The above is the technical requirements for machining of shaft parts, I hope it can help you!