Manufacturing method additionally provided with spinning working procedure for light-weight wheel rim

Abstract

The invention relates to the field of manufacturing of an automobile wheel rim and particularly provides a manufacturing method of a light-weight wheel rim. The manufacturing method additionally provided with a spinning working procedure for the light-weight wheel rim comprises the following steps of: firstly, blanking a steel coil to form an equal-thickness strip-shaped blank; then, carrying out edge rolling and butt welding on the equal-thickness strip-shaped blank to form an equal-thickness annular blank; scraping and cleaning the equal-thickness annular blank; taking a region on the equal-thickness annular blank, which is molded into a near deep groove side bead seat, as a first thinning region; taking a region on the equal-thickness annular blank, which is molded into a bead seat inner side platform, as a second thinning region; taking a region on the equal-thickness annular blank, which is molded into a far deep groove side bead seat, as a third thinning region; respectively spinning and thinning the first thinning region, the second thinning region and the third thinning region to obtain an unequal-thickness annular blank; and finally, flaring the unequal-thickness annular blank, and carrying out rolling, expansion and inflating door opening to finish the manufacturing of the unequal-thickness light-weight wheel rim. The method disclosed by the invention realizes the light weight of wheel rim products and reduces the weight by more than 10%; and meanwhile, the strength of the wheel rim products is optimized, the production time and energy consumption are reduced and the production cost is saved.

Description

technical field [0001] The invention relates to the field of manufacturing automobile rims, in particular to a method for manufacturing lightweight rims. Background technique [0002] Automobile rim is one of the two main components of automobile steel wheel. The existing automobile rim structure such as figure 1 As shown, each area is the rim near the deep groove side 1, the bead seat near the deep groove side 2, the round peak near the deep groove side 3, the deep groove 4, the inner platform of the bead seat 5, and the round peak near the deep groove side 6. The far-deep groove side bead seat 7 and the far-deep groove side rim 8. [0003] At present, steel rims are designed as equal-thickness rims. In equal-thickness rims, figure 1 Each area shown is of equal thickness, and the blanks used for forming equal-thickness rims are all equal-thickness blanks that are directly blanked from steel coils. , Three-pass rolling, punching door hole, expansion finishing and other fo...

AI Technical Summary

Problems solved by technology

The existing unequal-thickness rim manufacturing process is the blank used and the process of using the blank to produce the unequal-thickness rim. , butt welding, flaring, rolling, and expansion to complete the manufacture of lightweight rims with unequal thicknesses; among them, the rolling process of rim blanks with unequal thicknesses is extremely difficult to ensure dimensional accuracy, and the investment in rolling equipment is relatively large. For high-strength steel The requirements for materials and equipment will be higher. At present, most steel mills do not have the ability to roll unequal thick plates, so the practicability is poor and the production cost is high.

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