Coupling Device Tolerance Mapping for Collision-Free Panel Machining
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Solution Overview
Problem
Current methods for positioning coupling devices on working centers require excessive manual adjustments and iterations to achieve precise placement, leading to increased time and risk of collisions with machining tools, especially when higher precision is needed.
Innovation Solution
A method involving the discretization of support and encumbrance planes into matrices to calculate and display optimal positioning tolerances for coupling devices, reducing the number of manual adjustments required by determining the minimum deviations between desired and actual positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the positioning tolerance of coupling devices is reduced (higher precision required), then the risk of collision with machining tools is minimized, but the time required for positioning operation increases significantly
Solution Approach 1:
The system pre-calculates and stores optimal positioning coordinates for coupling devices based on the machining program and panel configuration. Before the actual positioning operation, the control unit has already determined the precise positions that avoid collisions, allowing the operator to directly input these pre-computed coordinates rather than performing iterative trial-and-error positioning.
Solution Approach 2:
The positioning system incorporates digital displays that show the actual position of coupling devices in real-time, along with deviation indicators that compare current position against target positions. This feedback mechanism allows operators to quickly assess positioning accuracy and make minimal adjustments, significantly reducing the time needed to achieve precise collision-free positioning.
2Manufacturing precision
If manual positioning of coupling devices is performed iteratively to achieve precise placement, then positioning accuracy improves, but the number of adjustments and time required increases
Solution Approach 1:
The control unit automatically generates optimal positioning coordinates by processing the machining program and panel data before the operator begins positioning. This preliminary calculation eliminates the need for multiple iterative adjustments, as the first positioning attempt using pre-calculated coordinates achieves the required precision immediately.
Solution Approach 2:
The system replaces manual trial-and-error positioning with an automated computational approach. The control unit uses algorithms to calculate precise positions based on digital models of the panel, machining tools, and coupling device dimensions, substituting mechanical iteration with mathematical computation to achieve both high precision and fast reconfiguration.
3Reliability
If coupling devices are positioned with uniform minimum tolerance across all locations, then collision risk is minimized, but positioning time increases due to excessive precision requirements in areas where it is not needed
Solution Approach 1:
The system determines different positioning tolerances for different locations based on local requirements. Areas with pass-through machining operations receive tighter tolerance specifications, while areas with only surface machining receive more relaxed tolerances. This localized quality approach ensures collision avoidance where needed while reducing positioning time in areas where high precision is not critical.
Solution Approach 2:
The control unit dynamically adjusts positioning tolerance parameters based on the specific machining operations and panel geometry. By changing the tolerance parameter locally for each coupling device position rather than applying a uniform tolerance, the system optimizes the balance between collision risk and positioning time for each specific location.
Data Source
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AI summary
The present invention relates to a method of positioning (300) coupling devices (12) on a support plane (1) that develops along a first direction (X) and a second direction (Y), perpendicular to said first direction (X), of a working center (4) for machining on a workpiece, such as a panel (P), wherein said working center (4) comprises at least one machining tool (2), such as a cutter, a blade, a drill or the like, and wherein each coupling device (12) comprises a resting portion (1212, 1222). The present invention also relates to a working center (4) for machining pieces or panels (P) made of wood, plastic, fiberglass and the like.