Press Brake Punch Reset Control for Continuous Angle Accuracy
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Solution Overview
Problem
Conventional bending machines require stopping operations to correct bending angle changes due to secular changes, leading to extended tact time and reduced productivity.
Innovation Solution
A bending system with a control device that continuously corrects bending angle changes by using position and load detection sensors to calculate and apply correction values during automatic operation, allowing continuous processing without stopping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If correction of bending angle is performed by stopping the punch movement to obtain approximate expression, then bending angle accuracy is improved, but machine operation is interrupted resulting in extended tact time and reduced productivity
Solution Approach 1:
The patent applies preliminary action by obtaining the approximate expression and calculating correction values in advance during idle periods or between production batches. The control device stores these correction values and applies them automatically during subsequent bending operations, allowing corrections to be prepared beforehand without interrupting the main production flow.
Solution Approach 2:
The patent replaces the mechanical stopping of punch movement with an automated control system that uses sensors and computational algorithms. The control device detects bending loads, calculates correction values based on the approximate expression, and automatically adjusts the punch position, eliminating the need for manual intervention and production stoppages.
2Manufacturing precision
If correction is made frequently to maintain bending angle accuracy, then quality is improved, but operation stopping frequency increases reducing productivity
Solution Approach 1:
The patent implements feedback by using load detection sensors to continuously monitor bending loads during operation. The control device compares actual loads with the approximate expression, automatically calculates correction values, and adjusts the punch position in real-time, creating a closed-loop control system that maintains accuracy without manual intervention.
Solution Approach 2:
The patent applies dynamics by making the correction process adaptive and flexible. The control device can adjust the frequency and timing of corrections based on detected changes in bending loads, material properties, or machine conditions, optimizing the balance between quality maintenance and production efficiency.
Data Source
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AI summary
A bending method is a method for bending a workpiece by a bending system including a bending machine equipped with tools including a punch and a die provided so as to be relatively movable, a manipulator configured to position the workpiece with respect to the tools, and a control device configured to control the bending machine and the manipulator to perform bending, the method including resetting, during an automatic operation of the bending of the workpiece by the bending machine, a pushing amount of the punch with respect to the die or an original position of the punch for each predetermined trigger condition.