Automated Key Duplication System with Optical Measurement
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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 comprising a clamping mechanism, mechanical measurement device with a probe, and a processor that analyzes the master key's geometry to identify the optimal key blank and bitting pattern, using a combination of mechanical measurement and image capture systems to ensure accurate duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If user selection is used for key blank selection and bitting pattern determination, then device complexity is reduced, but manufacturing precision deteriorates due to human error
Solution Approach 1:
The patent replaces manual visual inspection and selection with an automated optical measurement system that uses a camera to capture key images and a processor to analyze keyway geometry and bitting patterns. This substitution of mechanical/manual operations with automated optical-mechanical systems resolves the contradiction by eliminating human error while maintaining system functionality.
Solution Approach 2:
The system enables self-service by allowing the key duplication machine to automatically select the appropriate key blank and determine the bitting pattern without user intervention. The processor analyzes the captured key images, identifies key characteristics, and automatically configures the duplication parameters, making the system self-sufficient in the selection process.
2Manufacturing precision
If automated key blank selection and bitting pattern determination are implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single automated system: the camera captures key images, the processor performs both keyway geometry analysis and bitting pattern recognition, and the system automatically selects key blanks and configures duplication parameters. This multi-functionality consolidates what would otherwise require separate devices and operations, managing complexity while achieving high precision.
Solution Approach 2:
The system performs preliminary analysis of the master key before duplication begins. The camera captures images and the processor analyzes key characteristics in advance, identifying the key blank type and bitting pattern beforehand. This preliminary action allows the system to pre-configure duplication parameters, ensuring precision while streamlining the actual duplication process.
3Ease of operation
If manual key analysis is used, then ease of operation is maintained, but reliability deteriorates due to human error in bitting pattern determination
Solution Approach 1:
The patent replaces manual key analysis with an automated optical measurement system. The camera captures high-resolution images of the key, and the processor automatically analyzes the bitting pattern by detecting the positions and depths of key cuts. This substitution maintains ease of operation (the system still requires simple key placement) while dramatically improving reliability by eliminating human error in pattern determination.
Solution Approach 2:
The system incorporates feedback through the optical measurement process. The camera captures the actual key geometry, the processor analyzes the bitting pattern based on this feedback, and the system adjusts duplication parameters accordingly. This closed-loop feedback mechanism ensures accurate bitting pattern determination while keeping the operation simple for the user.
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 provides reliable and accurate selection of key blanks and determination of bitting patterns, significantly reducing human error and improving the reliability of key duplication processes.
Implementation Method 1
a mechanical measurement device including a probe that deflects along the intermediate key axis during a measurement process
Data Source
AI summary
A system for duplicating a master key includes a clamping 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. The key blade has an upper surface and a minor key axis along a key thickness. A mechanical measurement device includes a probe that deflects along the intermediate key axis during a measurement process. A movement mechanism imparts relative motion along the major key axis between the mechanical measurement device and the master key. The mechanical probe follows the upper surface of the key blade. The mechanical measurement device generates a signal indicative of the deflection of the probe. A processor receives the signal and generates information usable for defining the machining of a duplicate key.