Adjustable Multi-Ring Hole-Saw Assembly for Core Retrieval
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Solution Overview
Problem
Existing hole-saw technologies lack the ability to provide an adjustable mount for multiple hole-saw diameters simultaneously without a pilot drill, require cutting all the way through the workpiece, and cannot retrieve the core of the sawed workpiece, limiting their functionality and efficiency.
Innovation Solution
The development of extendable multi-ringed hole-saw assemblies with adjustable platters that allow for simultaneous mounting of multiple saw components, optional elimination of a guide drill, and the capability to retrieve the core of the workpiece before completing the cut, enabling the creation of various circular forms and transverse cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hole-saw is used to cut large holes, then the cutting function is achieved, but a pilot drill is required and the cutter must extend beyond the cut through the workpiece
Solution Approach 1:
The patent employs nesting by placing a pilot hole-saw inside a larger hole-saw cutter. The internal hole-saw blade acts as an aligning pilot drill that is of slightly less diameter to the outer blade, allowing the larger cutter to be guided without requiring a separate pilot drill operation. This nested configuration resolves the contradiction by eliminating the need for cutter extension beyond the workpiece while maintaining ease of operation.
Solution Approach 2:
The patent merges the functions of the pilot drill and the cutting blade into a single integrated hole-saw assembly. The internal hole-saw blade and outer blade are combined in one device, allowing simultaneous alignment and cutting functions. This merging eliminates the need for separate pilot drilling and cutting operations, thereby removing the requirement for cutter extension while maintaining operational simplicity.
2Adaptability or versatility
If multiple hole-saw diameters are accommodated using separate tools, then each diameter can be precisely cut, but multiple tools and operations are required
Solution Approach 1:
The patent applies universality by designing a single hole-saw assembly that can accommodate multiple hole-saw diameters through adjustable mounting mechanisms. The base plate with multiple mounting positions and adjustable platters allow different sized cutters to be mounted on the same device, enabling one tool to perform the function of multiple specialized tools. This resolves the contradiction by providing multiple diameter capability while reducing the number of tools required.
Solution Approach 2:
The patent employs dynamics through adjustable platters and locking mechanisms that allow the mounting configuration to be changed between operations. The adjustable platters can be positioned at different radii from the center, and the locking mechanism secures the selected configuration. This dynamic adjustability enables the same device to adapt to different hole-saw diameter requirements, providing versatility without requiring multiple fixed-tools.
3Productivity
If a hole-saw cuts all the way through the workpiece, then the cut is complete, but the core cannot be retrieved and material is wasted
Solution Approach 1:
The patent applies partial action by allowing the hole-saw to cut only to the required depth rather than forcing a complete through-cut. The adjustable cutting depth mechanism enables the operator to stop the cutting operation at the precise point where the desired hole depth is achieved, preventing unnecessary removal of material. This resolves the contradiction by maintaining cutting completion efficiency for the required depth while avoiding excessive material loss that would occur with full through-cuts.
Solution Approach 2:
The patent employs preliminary action through the use of an internal pilot hole-saw that first creates a guide hole before the outer blade begins cutting. This preliminary pilot hole allows the main cutter to be precisely positioned and guided, enabling accurate depth control and preventing the cutter from extending beyond the required depth. This preliminary guiding action ensures complete cuts at the correct depth while preventing material waste from over-cutting.
Data Source
AI summary
Hole-saws are provided herein, and more specifically to hole-saw assemblies and processes having adjustable platters for multiple simultaneous saw components, optional elimination of a guide drill, and the ability to retrieve cores of a sawed work piece before sawing completely through the workpiece. One hole-saw device, may have a motive force; a base plate rotatable by the motive force; cutters; and locking mechanisms to mount the base plate to the cutters.