Lock Coding via Segmented Blank Separation
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Solution Overview
Problem
The existing methods for coding keys and lock stamps in trapped key interlocking systems are costly and limited in the number of possible codings, as they require separate machining of the key and lock components, which complicates manufacturing and increases production time.
Innovation Solution
A method that involves separating a blank into two parts using a perpendicular or parallel cut to create coding disks, which are then affixed to the key and lock stamp, allowing for unique coding in a single production step and enabling the pre-fabrication of lock components with coding disks applied only when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate machining is used for key and lock stamp coding, then coding precision can be achieved, but manufacturing cost increases and production time extends
Solution Approach 1:
The patent combines the coding creation for both key and lock stamp into a single machining operation. A coding generator tool with multiple coding elements simultaneously machines the key blank and lock stamp blank in one pass, creating matching coded surfaces on both components. This merging of operations eliminates the need for separate machining steps while maintaining coding precision through the coordinated multi-element tool design.
Solution Approach 2:
The coding generator tool is segmented into multiple independent coding elements (first coding element and second coding element) that can be positioned at different locations and orientations. Each element independently machines a specific portion of the key and lock stamp blanks, allowing complex coded surfaces to be created through the coordinated action of multiple tool elements in a single operation.
2Adaptability or versatility
If separate machining is used for key and lock stamp coding, then unique coding can be created, but the number of possible codings is limited
Solution Approach 1:
The coding generator tool is designed with movable and adjustable coding elements that can be positioned at various locations, orientations, and depths. The tool allows dynamic configuration of coding patterns during manufacturing, enabling the creation of numerous unique coding combinations. The adjustable nature of the coding elements provides versatility in generating different coded surfaces without increasing manufacturing complexity.
3Productivity
If coding is created in one production step, then productivity increases, but manufacturing precision may be compromised
Solution Approach 1:
The coding generator tool is designed to automatically maintain precision through self-contained features. The tool includes reference surfaces and positioning mechanisms that ensure consistent, accurate coding without requiring external measurement or adjustment steps. The coordinated motion of multiple coding elements is inherently synchronized through the tool's internal geometry, allowing high-precision coding to be achieved automatically in a single production step.
Data Source
AI summary
A method for coding a key and a female lock part for a lock in a lock system, whereby a blank is separated into two parts by a separating cut that is guided perpendicular to the longitudinal axis and in the direction of the longitudinal axis of the blank. The cut forms a coding contour. The two parts are then post-processed to form the key and the female lock part or serve as coding disks that are affixed to a key and a female lock part.