Embossing Tool Material Flow Control for Sheet Steel
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Solution Overview
Problem
Cutting processes in workpieces, particularly sheet steel, often result in material distortion due to high pressing forces and material flow, which limits further workability, especially in applications like welding.
Innovation Solution
A method and embossing tool that control material flow by braking the material during cutting and pulling, using a special geometry in the stamp and cutting die to direct material into reservoirs, reducing the required pressing force and minimizing distortion, and incorporating braking means to prevent unwanted deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressing force is applied during cutting to achieve effective material separation, then cutting effectiveness is improved, but material distortion increases
Solution Approach 1:
The process is segmented into two distinct stages: cutting and pulling. The cutting edge separates the material first, then the pulling action extracts the cut material through the notch. This segmentation allows each stage to be optimized independently, reducing overall material distortion while maintaining cutting effectiveness.
Solution Approach 2:
The material is pre-braked in the area surrounding the notch before the cutting and pulling actions occur. This preliminary braking prepares the material by creating a controlled deformation zone, which reduces unwanted material flow and distortion during the subsequent cutting and pulling operations.
2Ease of manufacture
If material flow is allowed during cutting to facilitate material removal, then cutting process is simplified, but material distortion increases
Solution Approach 1:
The material is pre-braked in the area surrounding the notch before cutting occurs. This preliminary action controls the material flow in advance, creating a deformation zone that facilitates material removal while simultaneously reducing unwanted material flow and distortion during the cutting process.
Solution Approach 2:
The material flow is controlled by changing the mechanical state of the material through braking. The braking force modifies the material's flow characteristics, allowing controlled material movement during cutting while preventing excessive distortion. This parameter change enables both easy material removal and maintained precision.
3Manufacturing precision
If material braking is applied to control material flow and reduce distortion, then material distortion is reduced, but process complexity increases
Solution Approach 1:
The braking function is merged with the existing punch and die structure. The braking action is achieved through the geometry and interaction of the punch, die, and workpiece, rather than through a separate braking device. This integration reduces overall process complexity while still achieving effective material flow control and distortion reduction.
Solution Approach 2:
The workpiece itself provides the braking function through its interaction with the punch and die during the embossing process. The material's own deformation characteristics and the geometry of the notch create the braking effect, eliminating the need for external braking mechanisms and simplifying the overall process.
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 method and tool effectively minimize material distortion, reduce the pressing force by about 20%, and maintain the flatness of workpieces, enabling easier production of flange breakouts suitable for use in cabinets.
Implementation Method 1
when a cutting edge penetrates a material such as sheet steel, material flows and/or material compression occurs
Implementation Method 2
when a cutting edge penetrates a material such as sheet steel, material flows and/or material compression occurs
Implementation Method 3
the material of the workpiece is braked at least in certain areas during cutting and pulling
Data Source
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AI summary
The invention relates to a method for embossing and cutting into workpieces (4), having the following method steps: - providing a flat workpiece (4), - inserting the flat workpiece (4) between a stamp (2) and a cutting die (5), said stamp (2) having a notch (3) which lies opposite a cutting edge (6), and - pressing the workpiece (4) between the stamp (2) and the cutting die (5), wherein the cutting edge (6) cuts into the workpiece (4), and the material from which the workpiece (4) is made is drawn. The aim of the invention is to provide a method and an embossing tool for embossing and cutting into workpieces, in particular workpieces made of steel sheets, such that a warping in the workpiece can be minimized using said method and embossing tool, said method and embossing tool being characterized in that the material of the workpiece (4) is slowed at least in some regions during the cutting and drawing process and the flow of the material is controlled. This is achieved by an embossing tool (1) for carrying out a method of the aforementioned type, comprising a stamp (2) in which a notch (3) for receiving a material of a workpiece (4) is formed and comprising a cutting die (5) which lies opposite the stamp (2) and which has a cutting edge (6) that can cut into the material of the workpiece (4) such that the material is forced into the notch (3) lying opposite the cutting edge (6), said stamp (2) and cutting die (5) being movable relative to each other, wherein slowing means (7) are provided which retain the material at least in some regions.