Differential mechanism shell casting process
A differential housing and casting process technology, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of inability to guarantee the shape and position accuracy of the four cross shaft holes, low machining accuracy, and wear of boring tools. Achieve the effect of solving shrinkage cavity and shrinkage defects, reducing the amount of machining and cutting, and avoiding the formation of hot spots
Active Publication Date: 2015-02-18
长春一汽四环金仑汽车零部件有限公司
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Abstract
The invention provides a differential mechanism shell casting process which has the benefits that the hot section formation can be avoided, the shrinkage porosity and shrinkage cavity defects are overcome, the quality of castings is ensured, the large surface hardness fluctuation of a planet wheel machining spherical surface in contact with cold iron caused by the use of the cold iron is avoided, and the influence on follow-up machining is small; the drilling procedures are eliminated, and a rough boring-fine boring process is directly adopted, so that the cutting quantity is greatly reduced, and the processing efficiency is improved. The differential mechanism shell casting process comprises the following steps: 1, making a sand core main body (1) by adopting a core making machine, wherein the sand core main body (1) adopts an integral structure with a cast hole sand column (2) for casting a cross-shaped shaft hole in a differential mechanism shell; 2, drying the sand core main body (1) in the step 1; 3, putting the sand core main body (1) dried in the step 2 in upper and lower molds of the differential mechanism shell and then casting the molds according to conventional casting processes; 4, finally, opening the molds to obtain the differential mechanism shell (4) with the cross-shaped shaft hole.
Application Domain
Foundry mouldsMoulding machines +2
Technology Topic
HardnessShrinkage porosity +4
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