Concealed Hinge Boring Jig With Spring-Retracted Bit Guide
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Solution Overview
Problem
Existing concealed hinge boring jigs are cumbersome, prone to scratches on workpieces, and require multiple steps and reconfigurations for accurate pilot hole drilling, leading to inefficiency and limited accuracy.
Innovation Solution
A concealed hinge boring system featuring a base with a bit aperture and a removably attached bit guide assembly, which includes a boring drill bit with a stop collar and a spring to maintain non-contact with the workpiece, allowing for efficient and accurate drilling of concealed hinge pocket holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a center spur is used on the boring bit to locate and guide the bit, then the bit can be properly positioned, but the sharp center spur causes scratches on the workpiece surface
Solution Approach 1:
The patent removes the center spur from the boring bit entirely, extracting the harmful element that causes surface scratches while maintaining the bit's ability to be properly positioned through alternative means
Solution Approach 2:
The patent introduces a separate positioning mechanism or guide system that acts as an intermediary between the boring bit and the workpiece, allowing accurate positioning without the center spur contacting the surface
2Ease of manufacture
If static pilot hole locators are molded into the base, then the structure is simple, but the base cannot be used for all hinge types
Solution Approach 1:
The patent transforms the static, fixed pilot hole locators into a dynamic, adjustable system that can be repositioned or reconfigured to accommodate different hinge types and drilling requirements
Solution Approach 2:
The patent designs the base with adjustable pilot hole locators that can serve multiple functions and adapt to various hinge types, making a single base usable for all applications rather than requiring different bases for different hinge types
3Device complexity
If the same drill is used for both boring and pilot hole drilling, then tool inventory is reduced, but multiple reconfiguration steps are required
Solution Approach 1:
The patent prepares both the boring bit and pilot hole drill bit in advance, with the pilot hole drill bit ready in the drill before the boring operation begins, eliminating the need for reconfiguration during the workflow
Solution Approach 2:
The patent separates the boring and pilot hole drilling operations into distinct, sequential steps with dedicated bits, allowing each operation to be optimized independently while maintaining a simple overall process
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 improves upon existing technologies by providing a safer, more efficient, and accurate method for drilling concealed hinge pocket holes, reducing the risk of scratches and streamlining the process with fewer steps and improved alignment capabilities.
Implementation Method 1
a spring around the throat of the boring bit between a top spring surface of the guide cylinder and a bottom spring surface of the stop collar. The spring is configured to urge the boring bit into a non-contact position with the workpiece
Data Source
AI summary
In one or more arrangements, a jig for cutting a pocket on a workpiece is presented, which has a base and a guide assembly. In one or more arrangements, the system includes a base having a bit aperture configured to allow a boring bit therethrough and a bit guide removably attached to the base. In one or more arrangements, the bit guide has a boring drill bit slidably located within a guide cylinder, a stop collar coupled to the boring bit, and a spring around the throat of the boring bit between a top spring surface of the guide cylinder and a bottom spring surface of the stop collar. In one or more arrangements, the spring is configured to urge the boring bit into a non-contact position with the workpiece.