公开(公告)号：US4864509A

公开(公告)日：1989-09-05

申请号：US102484

申请日：1987-09-29

Applicant: Gordon R. Somerville ,  D. Bruce Thomas

Inventor： Gordon R. Somerville ,  D. Bruce Thomas

IPC: B21D5/02 ,  G05B19/401

CPC classification number: B21D5/02 ,  B21D5/004 ,  G05B19/401 ,  G05B2219/37403 ,  G05B2219/41318 ,  G05B2219/45143 ,  Y10S72/702

Abstract: A method and related system for operating a computer controlled press brake system to form a requested bend angle in a workpiece are described. According to the disclosed method, values corresponding to geometrical characteristics of the press brake and a first workpiece are stored, as is a value for the requested bend angle. A ram of the press is operated in a first direction, relative to the die, to a first selected position to bend the first workpiece and to hold the first workpiece to a restrained bend angle. The ram is thereafter operated in a second direction to release the first workpiece to an unrestrained bend angle. The difference between the restrained and unrestrained bend agles of the first workpiece is calculated. Using the values for geometrical characteristics and the requested bend angle, a correction factor is calculated. In accordance with the correction factor, the unrestrained and requested bend angles, the ram is set to travel to a corrected position. The ram is operated to the corrected position to bend a second workpiece, substantially identical to the first workpiece, to bend the second workpiece to the requested angle.

Abstract translation: 描述了一种用于操作计算机控制的压制系统以在工件中形成所请求的弯曲角度的方法和相关系统。 根据所公开的方法，存储对应于压制机和第一工件的几何特性的值，以及所请求的弯曲角度的值。 冲压机的冲头相对于模具沿第一方向操作到第一选定位置，以弯曲第一工件并将第一工件保持在约束的弯曲角度。 此后，压头在第二方向上操作以将第一工件释放到无限制的弯曲角度。 计算第一工件的受限制和无限制弯曲刀片之间的差异。 使用几何特征值和所请求的弯曲角度，计算校正因子。 根据校正因子，无限制和请求的弯曲角度，柱塞被设置为行进到校正位置。 压头操作到校正位置以弯曲与第一工件基本相同的第二工件，以将第二工件弯曲到所请求的角度。