Magnetic Press Brake Tooling for Stable Narrow Die Engagement
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Solution Overview
Problem
Existing press brake systems face instability issues with narrower dies, which tend to tip or dislocate due to misalignment with set screws, leading to suboptimal engagement and potential damage during sheet metal fabrication.
Innovation Solution
Incorporation of magnetic elements within the dies and die holders for secure magnetic coupling, allowing for adjustable and reversible engagement, along with a lever-based actuator for disengagement, ensuring stable positioning and easy removal of dies without relying solely on set screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If set screws are used to secure dies in the die holder, then the dies can be held in place, but narrower dies become misaligned and dislocated because the set screws are at fixed intervals
Solution Approach 1:
The patent replaces the mechanical set screw system with a magnetic coupling system. Magnets embedded in the die holder create a magnetic field that holds the die in place without requiring physical contact points, eliminating the alignment issues that occur with fixed-interval set screws and enabling secure mounting of dies of varying widths.
Solution Approach 2:
The patent changes the securing mechanism from discrete mechanical contact points (set screws) to a continuous magnetic field. This parameter change allows the holding force to be distributed across the entire die width, accommodating dies of different sizes without requiring repositioning of mounting points.
2Reliability
If set screws tighten directly against the die surface, then the die is secured, but the die position must be carefully maintained until tightening, and narrower dies may still become loose
Solution Approach 1:
The magnetic coupling system eliminates the need for careful manual positioning and tightening operations. The magnetic field automatically secures the die upon insertion, providing immediate and secure engagement without requiring the operator to maintain precise positioning during assembly.
Solution Approach 2:
The magnetic coupling system is self-aligning and self-securing. When a die is inserted into the holder, the magnetic field automatically draws it into the correct position and secures it, eliminating the need for manual positioning and tightening operations.
3Adaptability or versatility
If multiple forming tools are interchanged to accommodate different workpiece configurations, then versatility is improved, but the time required for assembly and disassembly increases
Solution Approach 1:
The magnetic coupling system enables rapid tool interchange by eliminating time-consuming mechanical tightening operations. Tools can be quickly attached and detached by simply bringing them into proximity with the magnetic field, significantly reducing setup time while maintaining configuration flexibility.
Solution Approach 2:
The magnetic coupling system provides dynamic, reversible attachment. Tools can be quickly attached and detached multiple times without wear or degradation, enabling frequent reconfiguration of forming tools to accommodate different workpiece requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The magnetic coupling mechanism enhances the stability of dies within the press brake system, preventing tipping and dislocation, and facilitates efficient assembly and disassembly, improving the overall operational reliability and versatility of the system.
Implementation Method 1
one or more magnetic elements disposed in the tool body for selective engagement within the press brake apparatus by magnetic coupling with the tool body
Implementation Method 2
An actuator can be configured to selectively disengage the magnetic coupling, e.g., by urging the coupling end of the punch or die from the holder
Data Source
AI summary
A punch or die component for a press brake apparatus includes a tool body having a coupling end adapted for coupling with a holder, and a working end adapted for operation on a workpiece. One or more magnetic elements can be adapted for selective engagement of the punch or die component within a press apparatus by magnetic coupling with the tool body, where the working end is configured for forming the workpiece by operation of the press apparatus. The magnetic coupling can be defined between the tool body and holder disposed adjacent the coupling end, or between the tool body and an adjacent punch or die component disposed along a side surface of the tool body, or both.