Multi-Row Key Clamp for Consistent Key Blank Gripping
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Solution Overview
Problem
Automated key cutting apparatuses face challenges in consistently gripping variously shaped key blanks for accurate cutting, as existing key clamps struggle to maintain a consistent grip across different key types and sizes.
Innovation Solution
A key clamp design featuring a first jaw with a first row of pyramid-shaped serrations along its lengthwise edge and a second row of serrations, along with a second jaw having a row of serrations between the first row of the first jaw, allowing for consistent engagement and holding of key blanks across different shapes and sizes, including those with curved shafts, through v-shaped recesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional key clamp with simple engagement surfaces is used, then the device complexity is low, but the manufacturing precision and consistency of gripping variously shaped key blanks deteriorates
Solution Approach 1:
The engagement surfaces are segmented into multiple rows of serrations (first row, second row, and third row) instead of a single continuous surface. This segmentation allows each row to engage with different portions of the key blank, providing consistent gripping across various key shapes and sizes while maintaining manageable structural complexity.
Solution Approach 2:
Different regions of the engagement surface have different local qualities through the multi-row serration design. The first row of serrations engages one portion of the key blank while the second and third rows engage other portions, creating localized engagement zones that collectively ensure consistent gripping across diverse key geometries.
2Adaptability or versatility
If the key clamp is designed to accommodate multiple key shapes and sizes, then the adaptability improves, but the ease of operation deteriorates due to difficulty in achieving consistent grip
Solution Approach 1:
The key clamp is designed with multi-row serrations that can universally engage with different types of key blanks including single-edged, double-edged, lever, dimple, and high-security keys. The multiple rows of serrations work together to provide consistent gripping across this diverse range of key types, making the clamp multi-functional without requiring operator adjustment.
Solution Approach 2:
The serrations are pre-configured in multiple rows at specific positions and orientations to automatically adapt to different key shapes. This preliminary arrangement of engagement features ensures that consistent gripping is achieved without requiring the operator to manually adjust or reconfigure the clamp for different key types.
3Manufacturing precision
If the serrations are positioned close to the lengthwise edge for better engagement, then the manufacturing precision improves, but the reliability of gripping different key types deteriorates
Solution Approach 1:
Instead of relying solely on the position of a single row of serrations, the design adds a dimension of multiple rows arranged in the widthwise direction. The first row is positioned close to the lengthwise edge with high precision, while the second and third rows are positioned at different widthwise locations, creating a three-dimensional engagement pattern that maintains both precision and reliability across different key types.
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
Enables consistent and accurate automated key cutting by securely grasping key blanks at their head or shaft, ensuring repeatable orientation and precise cutting across diverse key types, including single-edged, double-edged, lever, dimple, and high-security keys.
Implementation Method 1
The serrations may be substantially pyramid-shaped in the first row of serrations in the engagement surface of the first jaw, in the second row of serrations in the engagement surface of the first jaw, and/or in the row of serrations in the engagement surface of the second jaw
Data Source
AI summary
A key clamp for a key cutting apparatus is provided. The key clamp comprises a first jaw and a second jaw. The first jaw comprises an engagement surface having a widthwise dimension and a lengthwise dimension. The engagement surface comprises a first row of serrations, arranged along a lengthwise edge of the engagement surface, and a second row of serrations. The second jaw has an engagement surface comprising a row of serrations for location, in the widthwise dimension, between the first row of serrations in the first jaw and the second row of serrations in the first jaw.