Manufacturing method of carburizing heat treatment spacer for spiral umbrella driving bevel gear of rear axle

1. The utility model belongs to the field of heat treatment production technology for rear axle parts of passenger cars, trucks, suvs, and mpv automobiles, and specifically relates to a rear axle parachute active spiral bevel gear spacer that can be turned and used.

Background technique:

2. At present, the heat treatment continuous furnace system has been widely used in the field of heat treatment of spiral bevel gears, which greatly improves the quality and efficiency of heat treatment of spiral bevel gears, but the matching spacer is used to place the driving bevel gears. The problem of low life span cannot be solved for a long time. This is because the driving bevel gear spacer will be quenched in the heat treatment furnace along with the driving bevel gear. During quenching, the spacer will generate greater thermal stress and structural stress, which will cause it to deform. If no measures are taken, the deformation will be Continue to accumulate, and ultimately affect the continued use of the spacer. There is no need to worry about the spacer used to place the passive bevel gear, because for passive bevel gears, it is often press-quenched. The spacer of the passive bevel gear is not quenched with it but cooled in the air. The process is equivalent to a positive Fire, thermal stress and tissue stress will not cause obvious deformation of the passive bevel gear diaphragm.

3. There are currently two remedial measures for the large deformation of the active bevel gear spacer after heat treatment with the active bevel gear: the first one is to replace a batch of spacers when the life of a batch of spacers is about to expire; the second, By selecting spacers made of special materials that are less affected by thermal stress, its service life is increased. Both of the above measures have shortcomings: the first is to replace the spacers in batches regularly, which is expensive, and the replacement cycle is not easy to determine; the second is to use special materials to make the spacers, which also has a cost. High question.

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