Processing technique of split type speed differentiator shell

Abstract

The invention relates to a processing technique of a split type differential case, which belongs to the technical field of mechanical working. The inner cavities of a left differential case 1 and a right differential case 2 are fine-processed according to the technical requirement, and the inner cavities comprise spherical surfaces, half axle gear holes, half axle via holes, joint surfaces of the differential cases, and assembling rabbets of the left differential case and the right differential case; a surplus length of 0.4-0.5 is reserved on each excircle, a surplus length of 0.3 is reserved on the corresponding end surfaces, the left differential case 1 and the right differential case 2 are assembled, ten holes are drilled and bored, then a numerical control lathe is utilized for finish turning to each excircle and end surface of the differential case, the roughness value Ra of the excircle surface of the assembling bearing is smaller than 1.6, the roughness value Ra of the excircle surface and the end surface of the rabbet on the flange surface is smaller than 3.2, and the jump of the flange surface relative to the two axle necks is smaller than 0.06. The processing technique has the advantages that the split type differential case is processed through turning rather than grinding, the production benefit is high, the working accuracy can achieve the design requirement, the quality is obviously improved than the separated processing, the noise of the rear axle is favorable to be reduced, therefore, the requirements of the users can be met.

Description

technical field [0001] The invention belongs to the field of mechanical processing technology, and relates to a processing technology of a split differential case. Background technique [0002] At present, the finishing of the outer circle surface of each section of the domestic split differential housing assembly bearing is generally done by ordinary grinding machine or CNC grinding machine. The disadvantages are mainly low production efficiency, and it is difficult to ensure the design of the assembly driven gear end face and seam runout. It is required that the runout of the flange end face and the outer circle of the spigot reach 0.04~0.06 for the two journals, and the rework assembly rate must be high. In order to ensure the runout of the flange surface of the split differential case is lower than 0.06 and meet the requirements for assembling passive gears, the reduced The axle gears are noisy and can be mass-produced. Only better and faster processing techniques for th...

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Problems solved by technology

[0002] At present, the finishing of the outer circle surface of each section of the domestic split differential housing assembly bearing is generally done by ordinary grinding machine or CNC grinding machine. The disadvantages are mainly low production efficiency, and it is difficult to ensure the design of the assembly driven gear end face and seam runout. It is required that the runout of the flange end face and the outer circle of the spigot reach 0.04~0.06 for the two journals, and the rework assembly rate must be high. In order to ensure the runout of the flange surface of the split differential case is lower than 0.06 and meet the requirements for assembling passive gears, the reduced Bridge gear noise, and can be mass-produced, only to seek better and faster processing technology for the outer circle and end face of each section of the split differential case

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