Machining Process Analysis of Gear Shaft - Arrangement of Heat Treatment Procedures
Release time:
2023.03.09
Article source:
network
During the entire process of shaft machining, sufficient heat treatment procedures should be arranged to ensure the mechanical properties and machining accuracy requirements of the gear shaft, and improve the machining performance of the workpiece.
Generally, after forging the shaft blank, normalizing treatment is arranged first to eliminate the forging internal stress, refine the grains, and improve the cutting performance during machining.
Arrange tempering treatment after rough machining. In the rough machining stage, after rough turning, drilling, and other processes, most of the machining allowance for the gear shaft is removed. During rough machining, both cutting force and heat generation are very large. Under the action of force and heat, the shaft generates great internal stress. Through quenching and tempering treatment, the internal stress can be eliminated, replacing aging treatment, and the required toughness can be obtained.
After semi machining, all surfaces except important surfaces have reached the design dimensions. Only finishing allowance is left for important surfaces. At this time, local quenching treatment is arranged at the teeth to meet the design hardness requirements and ensure the wear resistance of these surfaces. The subsequent finishing process can eliminate quenching deformation.
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