Vehicle Mask Cutting System with Digital Contour Selection
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Solution Overview
Problem
Current methods for manufacturing protective masks for vehicle body repair are inefficient, as they require manual cutting and shaping of paper masks, which are not accurately adapted to the vehicle parts, and constructing three-dimensional geometric databases for non-planar vehicle surfaces is challenging.
Innovation Solution
A system and method for cutting protective masks using a machine with a data processing unit, a two-dimensional geometric database, and a touch screen interface to select and modify mask contours based on vehicle representations from multiple angles, facilitating quick and accurate mask selection and cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual cutting and shaping of paper masks is used, then flexibility in mask creation is maintained, but manufacturing precision and time efficiency deteriorate
Solution Approach 1:
The patent uses digital copies of vehicle part surfaces stored in a database. The contour extraction unit creates digital contour copies from these stored surface representations, eliminating the need for manual physical measurement and copying while maintaining high precision. The cutting unit then physically cuts the mask material based on these accurate digital contour copies.
Solution Approach 2:
The patent replaces manual mechanical cutting and shaping operations with an automated system consisting of a cutting unit guided by digital contour data. The data processing unit processes digital surface models and generates precise cutting paths, substituting human manual operations with automated computational and mechanical systems that achieve higher precision and efficiency.
2Adaptability or versatility
If three-dimensional geometric databases are constructed for non-planar vehicle surfaces, then mask adaptability improves, but device complexity and construction difficulty worsen
Solution Approach 1:
The patent performs preliminary digitization and storage of vehicle part surface geometries in a database before the actual masking operation. By pre-construction of the three-dimensional geometric database containing surface representations, the system eliminates the need for complex real-time measurements during mask fabrication, simplifying the operational process while maintaining adaptability to non-planar surfaces.
3Productivity
If automated mask cutting is implemented, then productivity improves, but ease of operation deteriorates due to system complexity
Solution Approach 1:
The system is designed to automatically retrieve the appropriate surface representation from the database based on the part identifier, automatically extract contours, and guide the cutting unit without requiring manual intervention for these complex operations. The operator only needs to input the part identifier, and the system handles the complex data processing and cutting execution autonomously, maintaining ease of operation while achieving high productivity.
Data Source
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AI summary
The invention relates to a method for controlling a machine for cutting masks for protecting a part of a vehicle, which comprises the following operations: - displaying on a display unit the makes, models and versions of vehicles for each of which the contours of masks for protecting several bodywork components are recorded in a database; - detecting a data item regarding choice of a vehicle and displaying on the display unit several distinct representations of the corresponding vehicle, each representation comprising regions corresponding to protection masks recorded in the database; - detecting a data item regarding choice of mask and modifying the aspect of at least one region of the representations displayed as a function of this data item regarding choice of mask; - detecting a data item regarding validation of choice of mask and recording the masks selected last in a list of masks to be cut out, and for each mask of the list of masks to be cut out, addressing data for controlling cutting of the mask considered to a mask cutting machine.