U形支架弯曲工艺优化及模具改进设计

摘要

In the U-shaped bracket bending process,there are pull marks,scratches and other defects on both sides of the U-shaped bracket flanging surface,and the life of bending die is short.In order to solve the issues of appearing surface defects such as drawing stamps and scratches in the bending process,a bearing needle structure has been introduced in the process of optimization design of bending process for U-shaped bracket.Such technology can be extended to bending dies of other specification U-shaped bracket,which can improve the appearance of the product quality and reduce production costs.Also,the design sizes of the bearing needle which were summarized and recommended in this paper can be referred for the peers in their further design project.%原U形支架弯曲模生产的U形支架两侧折边表面存在拉痕、划伤等缺陷,下模使用寿命短.通过优化U形支架弯曲工艺及改进弯曲模具结构,引入轴承滚针,成功地解决了缺陷问题,并推广至其他规格的U形支架弯曲模中应用,提高了产品外观质量,降低了生产成本.最后通过实践验证,总结归纳了轴承滚针结构弯曲下模结构尺寸并标准化.