公开(公告)号：US20070163323A1

公开(公告)日：2007-07-19

申请号：US11562816

申请日：2006-11-22

Applicant: Larry Alexander Polen ,  Jonathan Todd Harkey

Inventor： Larry Alexander Polen ,  Jonathan Todd Harkey

IPC: B21D11/02

CPC classification number: B21D11/02 ,  B21D25/04

Abstract: A stretch-forming machine of the type wherein a pair of opposed curving jaw assemblies grip opposite end edge portions of a metal sheet for initially stretching the metal sheet into a yield state and forming the metal sheet into a predetermined curved configuration. Each jaw assembly includes a jaw having an array of adjacent grippers or groups of grippers moveable relative to each other to define a part of the curve of the jaw and adapted to extend along one side edge of the metal sheet from adjacent a first corner to adjacent a second corner of the sheet, a moveable yoke connected to the jaw, a pivot connecting the yoke to a beam way, and at least one actuator connected to the yoke for pivoting the jaw about the pivot to urge the grippers at opposing ends of the gripper array away from the pivot while the grippers adjacent a centerline of the gripper array remain approximately stationary. The pivot and the actuator cooperate to stretch the outer corners of the metal sheet while substantially minimizing elongation along the centerline of the metal sheet.

Abstract translation: 一种这种类型的拉伸成型机，其中一对相对的弯曲爪组件夹紧金属片的相对端边缘部分，用于将金属片初始拉伸成屈服状态，并将金属片形成预定的弯曲构型。 每个钳口组件包括钳口，钳口具有相邻的夹持器或夹具组的阵列，其相对于彼此可移动以限定钳口的曲线的一部分并且适于沿金属片的一个侧边缘从邻近的第一角延伸到相邻 片材的第二角，连接到钳口的可动轭，将轭架连接到梁路的枢轴，以及连接到轭架的至少一个致动器，用于围绕枢轴枢转钳口以在夹持器的相对端处推动夹具 夹持器阵列远离枢轴，而与夹持器阵列的中心线相邻的夹持器保持大致静止。 枢轴和致动器配合以拉伸金属板的外角，同时基本上使沿着金属板的中心线的伸长最小化。

公开(公告)号：US07568371B2

公开(公告)日：2009-08-04

申请号：US11562816

申请日：2006-11-22

Applicant: Larry Alexander Polen ,  Jonathan Todd Harkey

Inventor： Larry Alexander Polen ,  Jonathan Todd Harkey

IPC: B21D11/02

CPC classification number: B21D11/02 ,  B21D25/04

Abstract: A stretch-forming machine of the type wherein a pair of opposed curving jaw assemblies grip opposite end edge portions of a metal sheet for initially stretching the metal sheet into a yield state and forming the metal sheet into a predetermined curved configuration. Each jaw assembly includes a jaw having an array of adjacent grippers or groups of grippers moveable relative to each other to define a part of the curve of the jaw and adapted to extend along one side edge of the metal sheet from adjacent a first corner to adjacent a second corner of the sheet, a moveable yoke connected to the jaw, a pivot connecting the yoke to a beam way, and at least one actuator connected to the yoke for pivoting the jaw about the pivot to urge the grippers at opposing ends of the gripper array away from the pivot while the grippers adjacent a centerline of the gripper array remain approximately stationary. The pivot and the actuator cooperate to stretch the outer corners of the metal sheet while substantially minimizing elongation along the centerline of the metal sheet.

Abstract translation: 一种这种类型的拉伸成型机，其中一对相对的弯曲爪组件夹紧金属片的相对端边缘部分，用于将金属片初始拉伸成屈服状态，并将金属片形成预定的弯曲构型。 每个钳口组件包括钳口，钳口具有相邻的夹持器或夹具组的阵列，其相对于彼此可移动以限定钳口的曲线的一部分并且适于沿金属片的一个侧边缘从邻近的第一角延伸到相邻 片材的第二角，连接到钳口的可动轭，将轭架连接到梁路的枢轴，以及连接到轭架的至少一个致动器，用于围绕枢轴枢转钳口以在夹持器的相对端处推动夹具 夹持器阵列远离枢轴，而与夹持器阵列的中心线相邻的夹持器保持大致静止。 枢轴和致动器配合以拉伸金属板的外角，同时基本上使沿着金属板的中心线的伸长最小化。