Optical Key Duplication System for Accurate Bitting Pattern Detection
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Solution Overview
Problem
Current key duplication systems rely on user selection, leading to human error in choosing key blanks and determining bitting patterns, resulting in inaccuracies and inefficiencies in producing duplicate keys that can open locks.
Innovation Solution
A system and method utilizing a clamping mechanism, optical path components, and a processor to accurately analyze and machine duplicate keys by scanning the master key along its major axis with a light beam, providing precise information for machining a duplicate key, including a moveable stage and beam directing components to ensure accurate bitting pattern measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user selection is used for key blank selection and bitting pattern determination, then the system is simpler to operate, but human error occurs leading to reduced accuracy
Solution Approach 1:
The patent replaces manual visual inspection and selection with an automated optical scanning system. A light beam scans the master key blade to detect bitting patterns, and a processor automatically determines the key blank type and bitting configuration, eliminating human error in measurement and selection.
Solution Approach 2:
The system performs self-analysis by automatically scanning the master key, identifying its characteristics, and selecting the appropriate key blank without requiring user expertise. The automated system serves itself by making all determination decisions based on optical detection data.
2Reliability
If automated optical scanning is implemented, then measurement precision and reliability improve, but device complexity increases
Solution Approach 1:
The optical scanning system is divided into distinct functional modules: a light source module that generates the scanning beam, a scanning mechanism that moves the beam along the key, a detection module that captures reflected light, and a processing module that analyzes the data. This segmentation makes the complex system more manageable and maintainable.
3Productivity
If automated analysis is used, then productivity increases, but initial system cost and complexity increase
Solution Approach 1:
The system performs preliminary analysis of the master key by scanning and storing its bitting pattern data before the actual duplication process begins. This preliminary action allows the system to quickly retrieve and replicate the key characteristics without requiring manual measurement during the duplication operation, thereby increasing overall productivity.
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
The system ensures highly reliable and accurate selection of key blanks and determination of bitting patterns, reducing human error and improving the reliability of key duplication processes.
Implementation Method 1
optical path components that direct a light beam along the minor key axis whereby the light beam impinges upon the key blade such that a portion of the light beam traverses the key blade
Data Source
AI summary
A system for duplicating a master key includes a mechanism for receiving and positioning a master key. The master key defines a major key axis and an intermediate key axis along which a key blade variably extends, and a minor key axis along a key thickness. Optical path components direct a light beam along the minor key axis. The light beam impinges upon the key blade. A portion of the light beam traverses the key blade. A detector receives the portion of the light beam that traverses the key blade. An apparatus imparts relative motion along the major key axis between the light beam and the master key. The light beam scans along the major key axis of the master key. A processor receives a signal from the detector as the beam scans along the major key axis and generates information usable for defining the machining of a duplicate key.