Production process of automotive middle-rear axle transmission meshing sleeve

Abstract

The invention discloses a production process of an automotive middle-rear axle transmission meshing sleeve. The production process comprises the following steps of step 1, feeding; step 2, blank forming; step 3, shot blasting; step 4, coating heating; step 5, heating and upsetting; step 6, warm forging extrusion and residual heat annealing; step 7, cold extrusion on a straight tooth spline arranged on the inner wall of a middle hole; step 8, shot blasting and turning according to design drawings; step 9, carburizing and quenching and step 10, sandblasting and oil coating packaging. According to the production process of the automotive middle-rear axle transmission meshing sleeve, the warm extrusion is combined with the cold extrusion to forge the end surface tooth shape and the straight tooth spline which is arranged on the inner wall of the middle hole, the milling machining on the end surface tooth shape and the straight tooth spline which is arranged on the inner wall of the middle hole does not need to be performed after forging, and accordingly the production processes are less, the cutting quantities are less, the tooth shape forging extrusion forming is high in accuracy and high in density, the impact resistance is good, the quality is good, and accordingly the technical requirements of the automotive middle-rear axle transmission meshing sleeve are fully met and meanwhile the production process conforms to the development trend of the current automotive manufacturing.

Description

Technical field [0001] The invention relates to the production technology of automobile parts and components, and belongs to the technical field of forging machining, in particular to a production process of a transmission engaging sleeve of a middle and rear sedan of an automobile. Background technique [0002] The middle and rear car transmission engagement sleeve of the automobile includes a hollow sleeve body with an inner circle and an outer circle. The end surface of the hollow sleeve body is provided with end-face convex teeth, the inner circular surface is provided with a straight tooth spline, and the outer circular surface has a shape suitable for assembly . The middle and rear car transmission meshing sleeve is a moving part that transmits the load and high torque of the middle and rear cars. It requires high manufacturing accuracy and tooth profile strength. Nowadays, there are two production methods in technology, one is the traditional direct drilling with rods. , ...

AI Technical Summary

Problems solved by technology

Using the above two methods to process and produce the middle and rear car transmission meshing sleeves of automobiles requires a lot of capital investment, and the production efficiency is low, the production cycle is long, waste of materials, and the cost is high. Since the former is directly cut by bar, the strength of the end tooth is the same as that of The strength of the parent body, the internal structure is loose, and the latter is cut after hot forging, and the internal structure is still loose

And the production cycle is long, so the production cost is high, and it cannot adapt to the development trend of today's automobile manufacturing industry

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