A kind of preparation method of heavy-duty automobile rear axle housing

A technology for heavy-duty vehicles and rear axles, used in manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems affecting the market competitiveness of products, uneven welding grooves, low processing efficiency, etc., to reduce processing costs. , The effect of convenient welding construction and high processing efficiency
CN111037237BActive Publication Date: 2021-03-26重庆康桥工业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
重庆康桥工业有限公司
Publication Date
2021-03-26

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Abstract

A preparation method of a rear axle housing of a heavy-duty car comprises the following steps: 1) blanking a steel plate; 2) performing cold and hot press molding to obtain an upper half shell and a lower half shell; 3) milling the joint surface of the upper half shell and the lower half shell; 4) arranging an oil drain hole at the bottom of the lower half shell corresponding to a bulge; 5) closing the upper half shell and the lower half shell, and performing spot welding at intervals along the length direction of a joint seam; (6) positioning a rear axle housing blank, using a milling machinefor machining welding grooves along the joint seam between the upper half shell and the lower half shell, and the cross sections of the welding grooves are V-shaped; (7) carrying out straight joint seam welding along the welding grooves, and obtaining a rear axle housing crude product; (8) calibrating the two ends of the rear axle housing crude product to be round, and forming stepping holes in inner holes at the two ends the rear axle housing crude product respectively; (9) carrying out machining, and setting accessories; and (10) obtaining the rear axle housing of the heavy-duty car after polishing and cleaning. The preparation method is simple in process, high in production efficiency, capable of effectively reducing the machining cost of the product and guaranteeing the quality of theproduct.
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Description

technical field

[0001] The invention relates to the field of auto parts, in particular to a preparation method for a heavy-duty automobile rear axle housing. Background technique

[0002] The current general preparation process for the rear axle housing of heavy-duty vehicles is to blank the steel plate, then use cold and hot pressing to obtain the upper housing and lower housing, and use CNC edge cutting or metal cutting to process the upper housing and lower housing respectively. , clearing slag and deburring, and then milling the welding surface of the upper shell and the lower shell respectively to obtain the angle of the weld bead, the welding surfaces of the upper shell and the lower shell are closed, and welding is carried out at the joint to form the overall structure. Boring, milling, lengthening of both ends of the car, etc., to process the rear axle housing of heavy-duty vehicles.

[0003] For the heavy-duty automobile rear axle housing obtained by this preparati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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