Axial parts, one of the most common parts in the machine, are also important parts that support the drive components and transmit torque. So, do you know what the machining technology of shaft parts is about? Let's share it with you!

 

      The technical requirements and processing of shaft parts, for us, is to understand a large-scale machining content, then what is its content? Then please see the following.

 

      The technical requirements of shaft parts generally have the following aspects:

 

      1. Diameter accuracy, geometric accuracy

 

      On the shaft, it is important to support the journal and the mating journal. The diameter accuracy is IT5-IT9, and the shape accuracy should be controlled within the diameter tolerance, and its requirements are higher than the diameter accuracy. If the shaft is of ordinary precision, then its radial circular runout is generally considered to be 0.01-0.03 mm if it is to be matched with the journal to support the journal. The high precision shaft is 0.001-0.005mm. If there are special requirements, it should be clearly stated.

 

      2. Surface roughness

 

Because of the precision of the machine, the speed of operation and other factors, the requirements for the surface roughness of the shaft parts are also different. The surface roughness of the bearing journal is 0.16-0.63 um, and the matching journal is 0.63-2.5 um.

 

      3. Spindle material, blank and heat treatment

 

In the shaft parts, the commonly used material is 45 steel, and through normalizing, annealing, quenching and quenching and quenching, etc., to obtain a certain strength, hardness, wear resistance and toughness. For shaft parts with high speed, alloy structural steel can be used because it will improve wear resistance and fatigue resistance after heat treatment.

 

      The blanks of the main shaft are generally made of forgings and round steels, which can reduce the amount of machining and improve the mechanical properties of the material.