Triangulation Part Inspection System for Complex Geometric Dimensions
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Solution Overview
Problem
Existing automatic inspection methods for parts lack versatility and accuracy in measuring geometric dimensions and thread parameters, particularly for complex shapes and threaded components.
Innovation Solution
A non-contact method and system utilizing triangulation that scans parts with multiple planes of radiation, measuring unobstructed planar portions to obtain geometric dimensions, and rotating the part to generate control signals for sequential or parallel scanning, with a system comprising a part support, radiation sources, receivers, and a controller for linear and rotary movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional manual gauging devices are used, then operation simplicity is maintained, but measurement precision and inspection accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical gauging devices with an automated optical inspection system that uses planes of radiation and sensors to measure geometric dimensions. The system automatically scans parts with multiple planes of radiation and processes the data to determine dimensional accuracy, eliminating the need for manual measurement while achieving superior precision.
Solution Approach 2:
The inspection system is designed to measure multiple geometric parameters (dimensions, shapes, thread parameters) using a single integrated platform. The system can inspect various part types and features by rotating the part and using multiple planes of radiation, providing universal measurement capability that replaces multiple specialized tools.
2Measurement precision
If existing automatic inspection methods are used, then productivity is improved, but measurement precision and versatility for complex shapes deteriorate
Solution Approach 1:
The inspection process is divided into multiple scanning operations using different planes of radiation. Each plane captures specific geometric information, and the results are integrated to provide complete measurement data. This segmented approach allows comprehensive inspection of complex features while maintaining high measurement precision.
Solution Approach 2:
The system uses multiple planes of radiation at different orientations to capture three-dimensional geometric information. By scanning from multiple angular dimensions and rotating the part, the system achieves complete coverage of complex shapes and thread parameters, enabling precise measurement of features that single-plane systems cannot capture.
3Adaptability or versatility
If multiple planes of radiation are used for scanning, then measurement precision and versatility improve, but device complexity and inspection time increase
Solution Approach 1:
The system performs continuous scanning with multiple planes of radiation as the part rotates, capturing measurement data without interruption. The simultaneous operation of multiple radiation planes and the continuous rotation enable comprehensive inspection in a single continuous motion, minimizing inspection time while maintaining versatility.
Solution Approach 2:
The system performs a preliminary scan to identify the part geometry and features, then uses this information to optimize subsequent scanning operations. This preliminary assessment allows the system to focus measurement resources on critical features, reducing total inspection time while maintaining comprehensive coverage of complex shapes.
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
Enhances the accuracy and versatility of part inspection by providing detailed geometric and thread parameter measurements, capable of handling complex shapes and threaded components with improved precision and efficiency.
Implementation Method 1
A non-contact method and system utilizing triangulation that scans parts with multiple planes of radiation
Implementation Method 2
the part occludes the at least one plane of radiation to create unobstructed planar portions of the at least one plane of radiation
Implementation Method 3
scanning the supported part with a beam of electromagnetic energy to obtain a reflected beam of electromagnetic energy
Data Source
AI summary
A method and system for inspecting parts utilizing triangulation are provided. The system includes a part support subsystem including a fixture for supporting a part to be inspected and a head apparatus. The head apparatus includes at least one radiation source for directing a plane of radiation at the part so that the part occludes the plane of radiation to create unobstructed planar portions of the plane of radiation wherein each of the unobstructed planar portions of the plane of radiation contains an amount of radiation which is representative of a respective geometric dimension of the part. The head apparatus also includes at least one receiver module for measuring the amount of radiation present in each of the unobstructed planar portions and a triangulation-based sensor to illuminate the part with a beam of electromagnetic energy to obtain a reflected beam of electromagnetic energy and to sense at least one portion of the reflected beam of electromagnetic energy. The system further includes a movable stage subsystem coupled to the head apparatus for translating the head apparatus relative to the part so that the plane of radiation and the beam of electromagnetic energy linearly scan the part supported by the fixture and a controller for generating control signals to control linear movement of the stage subsystem during the linear scan.