公开(公告)号：US20040200254A1

公开(公告)日：2004-10-14

申请号：US10837927

申请日：2004-05-03

Applicant: General Motors Corporation

Inventor： Gary A. Kruger ,  John E. Carsley ,  Nelson T. Brinas

IPC: B21D011/00

CPC classification number: B21D26/055 ,  B21D5/00

Abstract: A bending apparatus for bending and transporting an aluminum metal sheet. The bending apparatus includes a central retaining portion that has gripping elements mounted on the central retaining portion for retaining an aluminum metal sheet. There is also included a bending mechanism that is mounted to the central retaining portion. The bending mechanism is capable of axial movement in relation to a central axis of the central retaining portion for imparting a curvature to an aluminum metal sheet. There is also included a method of stretch forming an aluminum metal sheet including the steps of heating an aluminum metal sheet in an oven, transferring the heat of an aluminum sheet to a hot forming tool, bending the heated aluminum sheet during the transfer step to conform the sheet to a shape of the hot forming tool, and then placing the bent metal sheet in the hot forming tool and forming an A-shaped part.

Abstract translation: 一种用于弯曲和输送铝金属片的弯曲装置。 弯曲装置包括中央保持部分，其具有安装在中心保持部分上用于保持铝金属片的夹紧元件。 还包括安装到中心保持部分的弯曲机构。 弯曲机构能够相对于中心保持部分的中心轴线轴向移动，以向铝金属片施加曲率。 还包括拉伸成形铝金属片的方法，包括以下步骤：在炉中加热铝金属片，将铝片的热量转移到热成形工具，在转印步骤期间弯曲加热的铝片以使其符合 将该片材变成热成形工具的形状，然后将弯曲的金属片放置在热成形工具中并形成A形部分。