Rim and spoke integral steel wheel manufacturing method

Abstract

The invention discloses a rim and spoke integral steel wheel manufacturing method. The method comprises the following steps that a steel pipe of a corresponding material is selected according to the size of a blank, or a plate is coiled and then welded into the steel pipe or a whole block of steel is forged into the steel pipe; the steel pipe is heated in a heating furnace to an initial forging temperature, a roll-in head penetrates into the open end of a rim expected, the roll-in head is used for gradual inward rolling-in according to the size of the rim until the right end of a workpiece, during the process, a groove bottom of the rim and a rim body are formed through rolling-in, and during a subsequent rolling-in process, when a temperature of the workpiece is lower than a final forgingtemperature, the workpiece is re-heated to the initial forging temperature; the roll-in head is used for internally rolling-in on the outer circular surface of the workpiece to form a lock ring groove, when the roll-in head reaches the right end of the workpiece, a right end material of the workpiece is gradually inwards bent, closed and folded to form a spoke of a wheel by means of profiling andthe roll-in head at the right end of the workpiece, a central hole of the spoke is formed through closing in the center of the spoke, and finish rolling, shaping, and machining on a central hole, a bolt hole, an air hole and a valve core hole are conducted.

Description

technical field [0001] The invention relates to a processing method of an automobile wheel, in particular to a manufacturing method of a rim and spoke integrated steel wheel. Background technique [0002] The wheel is a rigid wheel that fixes the inner edge of the tire, supports the tire and bears the load together with the tire. The structure of steel wheels usually consists of an annular rim and webs welded in annular holes. Among them, the rim is a component that installs and supports the tire on the periphery of the wheel, and forms a wheel with the spokes. The spokes are the parts that transmit power on the wheel and connect the rim and the hub. The center of the rim has a center hole that is larger than the rotation axis of the wheel. There are connecting holes for bolts all around, so that the wheel is connected with the hub. According to the structure of the spokes, the wheels are divided into the spoke type and the spoke type. At present, the mainstream family car...

AI Technical Summary

Problems solved by technology

"In the manufacturing process, we can see that they are all made of steel plate spinning. The first step is to make a blank. First, a circular steel plate blank is placed, including inner holes and screw through holes; Perform spinning, shaping, punching center holes, bolt holes, ventilation holes, valve holes, and cutting related processing surfaces to become finished products; Figure 8 In the first picture, it can be seen that the blank has an inner hole in the middle and a circular ring around it. figure 1 , figure 2 As shown, the size of the through hole is the center hole of the rim, and the diameter of the blank is slightly smaller than the extended length of the entire wheel, considering the extruded ductility of the blank during spinning, but the material utilization rate of this processing method is extremely low , when the round steel blank is lowered, the remaining material after dropping the blank is as follows Figure 4 The hatched part shown in the figure is completely waste, accounting for about 30% of the total area. If the stamping method is used, the width of the overlapping side needs to be considered, and the side length of the square is greater than the outer diameter of the blank. Figure 5 As shown, the waste of its materials will be even greater, reaching about 40%

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