Machining Path Defect Inspection Using Normal and Tangent Vectors
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Solution Overview
Problem
Machining path defects in machining program codes generated by CAD and CAM software are difficult to detect, often leading to unnoticed issues until final product surface inspection, necessitating a method to inspect for defects before the cutting process.
Innovation Solution
A method that generates a contour mold with surface nodes, calculates normal and tangent vectors, and determines error information based on their relation, identifying defects by comparing angles to a predetermined value, with the option to correct defective block nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual inspection methods are used to detect machining path defects, then the inspection process is simple and quick, but the detection capability is insufficient and defects cannot be reliably identified
Solution Approach 1:
The patent replaces manual visual inspection with an automated computational method that uses vector mathematics to detect machining path defects. The system automatically generates normal vectors and tangent vectors, calculates their relationships, and identifies defects through computational analysis, eliminating the need for human visual inspection while significantly improving detection capability.
Solution Approach 2:
The patent introduces normal vectors and tangent vectors as intermediary mathematical constructs to detect machining path defects. These vectors serve as mediators between the machining path data and the defect detection process, enabling automated identification of abnormalities through vector relationship analysis without requiring direct visual inspection.
2Reliability
If machining path inspection is performed after the cutting process, then no additional inspection equipment is needed, but defects are discovered too late causing product quality issues
Solution Approach 1:
The patent performs machining path inspection before the cutting process by analyzing the machining program code and generating a contour mold with vector calculations. This preliminary inspection identifies potential defects in advance, allowing corrections to be made before actual machining occurs, thereby ensuring product quality and preventing waste of time and materials.
3Measurement precision
If automated vector-based inspection method is implemented, then defect detection accuracy is improved, but the computational complexity and processing time increase
Solution Approach 1:
The patent divides the machining path into discrete segments represented by blocks in the machining program code. Each block is analyzed independently by generating normal vectors and tangent vectors for individual surface nodes, allowing the inspection process to be broken down into manageable computational units that can be processed efficiently.
Solution Approach 2:
The patent transforms the machining path data into vector parameters (normal vectors and tangent vectors) to enable automated defect detection. By changing the representation from raw coordinate data to vector relationships, the system achieves accurate defect identification while maintaining computational efficiency through mathematical operations.
Data Source
AI summary
A method for inspecting defects of a machining path is provided. The method includes the following steps. Firstly, a contour mold with a plurality of surface nodes is generated according to a machining program code. Next, a normal vector of each surface node of the contour mold is calculated. Then, a tangent vector of a block of the machining program code corresponding to the normal vector is calculated. Afterwards, an error information is obtained according to a relation between the normal vector and the tangent vector. When the error information is greater than a predetermined value, a defect information is shown on the contour mold.