Automatic speed changer shell body and welding method thereof

Abstract

The invention discloses an automatic speed changer shell body used in the field of automobile spare parts. The automatic speed changer shell body comprises an inner hub and an outer hub, a first ring welding face is arranged at the bottom of the inner hub, a second ring welding face is arranged on the top of the outer hub, a plurality of welding bosses with equal heights are evenly distributed along the first ring welding face, and the faces of the welding bosses are welded with the second ring welding face. The automatic speed changer shell body can effectively enable lubricating oil to flow into the interior of the automatic speed changer shell body, conducts lubricating for a clutch assembly, prolongs service life of the clutch assembly, and simultaneously reduces labor intensity of welding the automatic speed changer shell body, and welding quality of the automatic speed changer shell body is easy to control.

Description

technical field [0001] The invention relates to an automatic transmission casing used in the field of auto parts and a welding method. Background technique [0002] The automatic transmission housing is an important part of the automobile transmission. The bottom of the inner hub is provided with a first annular welding surface, and the top of the outer hub is provided with a second annular welding surface. By adopting a spot welding process, surrounding the first The annular welding surface and the second annular welding surface are welded to obtain the automatic transmission casing. Such a welding method is labor-intensive. However, it is very difficult to control the entire first annular welding surface and the flatness of the entire first annular welding surface at the same time, so the quality of the automatic transmission casing is difficult to guarantee. The projection welding process can be used to solve the above technical problems, but there is no report on the u...

AI Technical Summary

Problems solved by technology

Such a welding method is labor-intensive

And it is quite difficult to control the flatness of the entire first annular welding surface and the entire first annular welding surface at the same time, so the quality of the automatic transmission housing is difficult to guarantee

The projection welding process can be used to solve the above technical problems, but there is no report on the application of the projection welding process to the welding of the automatic transmission case.

On the other hand, there is also a defect in the current automatic transmission housing: the side of the automatic transmission housing is closed, so it is difficult for lubricating oil to penetrate into the interior of the automatic transmission from the automatic transmission housing to lubricate the clutch assembly and reduce the clutch load. The service life of the assembly and bring danger to the normal running of the car

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