Circular Blade Sheet Cutting with Coupled Clearance and Insertion Depth
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Solution Overview
Problem
Existing sheet metal cutting devices with two circular blades require independent manual setting of cutting clearance and immersion depth, leading to poor cutting results due to incorrect correlation between these parameters and high setup effort.
Innovation Solution
A device with a forced coupling between cutting clearance and immersion depth, where one parameter is automatically set when the other is adjusted, ensuring optimal correlation for specific sheet thicknesses, using a CNC controller and a rotatably mounted circular knife on a linearly movable eccentric element with a thread for precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If independent manual adjustment mechanisms are used for cutting clearance and plunge depth, then the device construction remains simple, but the cutting quality deteriorates due to incorrect parameter correlation
Solution Approach 1:
The patent combines two independent adjustment mechanisms (cutting clearance adjustment and plunge depth adjustment) into a single integrated adjustment mechanism. By linking the adjustment of cutting clearance with the adjustment of plunge depth through a mechanical coupling, the system ensures that both parameters are adjusted simultaneously and correctly, thereby improving cutting quality without requiring complex independent control systems for each parameter
Solution Approach 2:
The patent introduces a mechanical coupling as an intermediary element that connects the cutting clearance adjustment mechanism with the plunge depth adjustment mechanism. This intermediary ensures that when one parameter is adjusted, the other parameter is automatically adjusted in a correlated manner, maintaining the correct relationship between cutting clearance and plunge depth while simplifying the overall control system
2Ease of operation
If two separate adjustment mechanisms are used for cutting clearance and plunge depth, then the device construction remains simple, but the setup effort increases due to operating two independent mechanisms
Solution Approach 1:
The patent merges the operation of two separate adjustment mechanisms into a single unified adjustment operation. By mechanically coupling the cutting clearance adjustment with the plunge depth adjustment, the system allows the operator to adjust both parameters simultaneously through one control action, significantly reducing setup effort while maintaining a relatively simple device structure
3Manufacturing precision
If cutting clearance and plunge depth are adjusted independently, then the adjustment mechanism remains simple, but the correlation between parameters is lost leading to poor cutting results
Solution Approach 1:
The patent employs a mechanical coupling as an intermediary that enforces the correct correlation between cutting clearance and plunge depth. This coupling mechanism ensures that the parameters are adjusted in the proper relationship to each other, eliminating the possibility of incorrect parameter combinations while keeping the adjustment operation straightforward through a single unified control
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
Achieves high-quality cutting results with reduced setup effort by automatically setting the necessary correlation between cutting clearance and immersion depth for specific sheet thicknesses, eliminating inaccurate parameter settings.
Implementation Method 1
Both circular blades preferably roll passively about their respective axes of rotation during the cutting process
Implementation Method 2
a positive coupling exists between the cutting clearance and the plunge depth... The forced coupling according to the invention is designed such that each cutting air value, determined by a specific sheet thickness, is assigned the corresponding plunge depth
Implementation Method 3
The eccentric element is provided with a thread concentric to the eccentric axis for linear movement of the eccentric element
Data Source
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AI summary
The invention relates to a device for cutting sheet metal comprising a first circular blade (1) having a first blade edge (5) and a second circular blade (2) having a second blade edge (6), wherein the sheet metal to be cut is positioned between the first and the second circular blade (1, 2) during cutting. The first circular blade (1) is rotatably mounted about a first axis of rotation (3) and the second circular blade (2) is rotatably mounted about a second axis of rotation (4), which runs parallel to the first axis of rotation (3). A relative position of the first circular blade (1) can be adjusted relative to the second circular blade (2), which is defined by a cutting clearance with which the first blade edge is spaced apart from the second blade edge (6) axially in the direction of the first axis of rotation (3), and by an insertion depth with which the first blade edge (5) and the second blade edge (6) overlap one another radially in a direction perpendicular to the axes of rotation (3, 4). According to the invention, a positive coupling is provided between the cutting clearance and the insertion depth.