Automated Machining Code Generation from Paper Drawings
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Solution Overview
Problem
Manual generation of machining codes from paper engineering drawings is time-consuming and prone to errors, as mechanists need to interpret dimensions and shapes, and colorful images are difficult to process directly in CNC systems.
Innovation Solution
A method and apparatus that process paper engineering drawings into binary images, extract dimension and shape features, and generate machining codes automatically, using image processing techniques such as converting RGB to binary, recognizing features, and shrinking line widths, thereby eliminating the need for manual interpretation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual generation of machining codes from paper engineering drawings is used, then flexibility in handling complex drawings is maintained, but time consumption increases and error probability increases
Solution Approach 1:
The patent replaces the manual mechanical interpretation process with an automated image processing system. The system captures the paper engineering drawing, converts it to binary image, extracts dimension and shape features automatically, and generates machining codes without human intervention, thereby improving both speed and accuracy
Solution Approach 2:
The system enables the drawing itself to provide the machining information automatically through feature extraction algorithms. The binary image processing and feature extraction mechanisms allow the drawing to self-generate machining codes without requiring external human interpretation
2Loss of information
If colorful images are processed directly in CNC systems, then color information is preserved, but processing difficulty increases
Solution Approach 1:
The patent transforms the image from RGB color space to binary image space by changing the parameter representation from three color channels to two grayscale levels (black and white). This simplification removes color information but preserves the essential dimension and shape features needed for machining code generation
Solution Approach 2:
The system extracts only the necessary information (dimension features and shape features) from the drawing by converting to binary image and applying feature extraction algorithms. This separates the essential machining information from the non-essential color information, simplifying subsequent processing
Data Source
AI summary
A method and apparatus for generating machining code of workpieces from a paper engineering drawing are provided. The method includes processing the paper engineering drawing to be a binary image; extracting dimension features and shape features of the workpieces from the binary image; and generating the machining codes of the workpieces based on the extracted dimension features and shape features of the workpieces. The machining codes indicate the dimension and shape of the workpieces. Machining codes of workpieces are generated from a paper engineering drawing directly without manual involvement.