Invention Grant
- Patent Title: Bend correction apparatus and method
- Patent Title (中): 弯曲矫正装置及方法
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Application No.: US893714Application Date: 1992-06-05
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Publication No.: US5275031APublication Date: 1994-01-04
- Inventor: James A. Whiteside , Billy W. Morgan
- Applicant: James A. Whiteside , Billy W. Morgan
- Applicant Address: AR Russellville
- Assignee: Stark Manufacturing, Inc.
- Current Assignee: Stark Manufacturing, Inc.
- Current Assignee Address: AR Russellville
- Main IPC: B21D7/024
- IPC: B21D7/024 ; B21D7/14 ; B21D7/04
Abstract:
A bend correction apparatus for bending a workpiece subject to springback, the apparatus having a pressure die for holding a workpiece, a radius die for providing a radius form about which the workpiece is bent, and a clamping die for engaging and bending the workpiece relative to the pressure die and about a portion of the radius die. A microprocessor moves the clamping die between a bend angle position in which the workpiece is bent about the radius die to a predetermined angle relative to the clamping die and a relieved position in which the clamping die is not bending the workpiece. A sensor, movable conjointly with the radius die, engages the workpiece in a springback position upon rotation of the radius die toward the workpiece and sends a signal to the microprocessor upon contact with the workpiece. The microprocessor then determines a rebend angle to achieve the desired degree of bend in the workpiece and moves the clamping die means and radius die to the rebend angle to bend the workpiece to that angle and storing the rebend angle for bending subsequent workpieces.
Public/Granted literature
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