Key Duplication Machine Optical Blank Selection
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Solution Overview
Problem
Existing key duplication machines rely heavily on manual selection of key blanks, leading to inaccuracies and high scrap rates due to operator error, and are not user-friendly, especially when dealing with complex keys like automotive keys with transponder chips.
Innovation Solution
A key duplication machine equipped with an optical imaging device and logic system that captures and analyzes the master key's image to determine the correct key blank, validate the selection, and accurately cut the key pattern, incorporating a clamping assembly and cutting member for precise duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual selection of key blank is used, then operator can choose key blank, but accuracy of key blank selection deteriorates due to operator error and difficulty in distinguishing similar key blanks
Solution Approach 1:
The patent replaces the manual mechanical selection process with an optical imaging system and automated logic. The optical imaging device captures images of the master key and key blank, while the logic automatically compares features and determines compatibility, eliminating reliance on operator skill and visual inspection of subtle differences between key blanks.
Solution Approach 2:
The patent uses optical copying to capture images of the master key and key blank, creating digital representations that can be analyzed by the logic system. This allows for precise measurement and comparison of key features without requiring manual visual inspection, thereby improving selection accuracy.
2Productivity
If manual key blank selection process is used, then operator has flexibility in choosing key blank, but productivity deteriorates due to time-consuming identification process and high scrap rate requiring rework
Solution Approach 1:
The patent performs preliminary analysis of the master key using optical imaging and logic determination before the cutting process begins. The system pre-identifies the correct key blank by comparing key features, ensuring that the selected blank is compatible with the master key. This preliminary verification prevents errors and rework, improving overall productivity.
3Manufacturing precision
If mechanical stylus and cutting wheel system is used, then key pattern can be transferred, but manufacturing precision deteriorates due to manual operation errors and lack of validation
Solution Approach 1:
The patent incorporates feedback by using the optical imaging device to capture images of both the master key and the key blank, then using the logic to compare their features and determine compatibility. This feedback mechanism ensures that the correct key blank is selected before cutting, and can validate that the duplication process is using the appropriate blank, thereby improving manufacturing precision.
Solution Approach 2:
The patent replaces manual mechanical operations with automated optical and logical systems. The optical imaging device and logic system automatically determine key blank compatibility and guide the cutting process, reducing reliance on operator skill and minimizing errors in key pattern duplication.
4Measurement precision
If simple optical imaging is used, then device complexity is reduced, but measurement precision deteriorates due to inability to accurately capture key pattern details
Solution Approach 1:
The patent employs a multi-functional system where the optical imaging device serves multiple purposes: capturing the master key pattern, imaging the key blank for comparison, and providing visual feedback for validation. The logic system similarly performs multiple functions including feature extraction, compatibility determination, and process control. This multi-functionality justifies the increased device complexity by delivering superior measurement precision across multiple operational stages.
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 significantly reduces operator error, ensures accurate key duplication, and simplifies the process by automating the selection and cutting of key blanks, including those with transponder chips, thereby improving efficiency and user-friendliness.
Implementation Method 1
an optical imaging device...capable of capturing an optical image of at least a portion of the master key
Data Source
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AI summary
A key duplication machine (10) comprising: a key blank identification system comprising: an outer shell (228) having an opening (230) to receive a key (22, 24) including a microchip embedded therein; a read/write device (226) positioned on the key duplication machine to interface with said key located in the opening wherein said read/write device is configured to transmit data to said key and configured to receive data from said key located at said opening; and an optical imaging device (50) is mounted within the machine and positioned such that it captures an optical image of said key at said opening.