Steel wheel spoke stamping process for passenger car and processing mould

Abstract

The invention relates to a steel wheel spoke stamping process for a passenger car, comprising the following steps of: (1) cutting a panel veneer: placing the rectangular panel veneer on a material support, the left and right ends as well as the front end of which are positioned by a set rule; when a press descends, cutting the panel veneer at the same time by using a peripheral cutting edge at the lower part of the outer edge of an upper mold core and a trim blade to form a spoke panel veneer; (2) stretching the panel veneer: placing the trimmed spoke panel veneer on a blank pressing ring, and pressing down the spoke panel veneer through the upper mold core and the blank pressing ring, wherein in the descending process of the press, the middle part of the spoke panel veneer firstly contacts the lower mold core to prevent the middle part of the spoke panel veneer from descending, and the peripheral part of the spoke panel veneer without being blocked continuously stretches the spoke panel veneer along with the descending of the upper mold core and the blank pressing ring; (3) punching central holes of the spoke; and (4) resetting and discharging. The invention integrates the blanking and stretching processes, adopts the one-step positioning way to ensure the concentricity of the central hole of the spoke and the outer edge of the spoke to ensure the processing quality of the spoke and reduces one process compared with the prior art, thereby greatly improving the production efficiency.

Description

technical field [0001] The invention belongs to the field of manufacturing steel wheel spokes, and in particular relates to a stamping process and a processing mold for steel wheel spokes for passenger vehicles. Background technique [0002] The wheel spoke is the main support connecting the car hub and the tire, and it is also a key part of the safety of the wheel (determining whether the wheel is beautiful or not). [0003] At present, the main processes for producing steel wheel spokes include shear blanking, initial stretching, reverse stretching, edge trimming, bolt hole flanging, bolt hole extrusion, air hole punching, burr extrusion, stamping, Finishing and other processes. [0004] In the production of steel wheel spokes, the long sheets are generally cut into spoke sheets by a shearing and blanking process, and then the sheets are processed into spokes by performing multiple stampings on the sheets. After shearing and blanking, the spoke sheet is stretched and pun...

AI Technical Summary

Problems solved by technology

After shearing and blanking, carry out stretching punching center hole process to wheel spoke piece material, because there is certain positioning error between previous shearing process and next stretching punching center hole process (caused blanking size error and The accumulation of positioning accuracy errors in this process) will make the concentricity between the center hole of the spoke and the outer edge of the spoke poor, and will affect the accuracy of the subsequent processing of the spoke, which will easily cause the radial runout of the wheel

Images