Internal Auger Hole Saw for Continuous Deep Hole Cutting
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Solution Overview
Problem
Existing hole saws face challenges in cutting deep or fractional holes without having to stop and remove trapped material, particularly when dealing with thick materials or when cutting through obstructions like joists, and they are limited by their depth and require tedious manual removal of cut material.
Innovation Solution
A hole saw with an internal auger that includes discharge slots and a base plate designed to eject cut material, allowing continuous cutting without stopping, and features like thrust lugs for stability and removable internal augers for flexibility and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a hole saw is used to cut deep holes through thick materials, then the depth of the hole can be increased, but the cut material becomes trapped inside the cylindrical body and must be manually removed
Solution Approach 1:
The patent extracts the cut material from the cylindrical body by providing discharge slots that allow the material to be ejected automatically during the cutting process, eliminating the need for manual removal after deep hole cutting
2Length of stationary object
If a hole saw is used to cut holes in thick materials like rim board between floors, then the hole depth requirement is met, but the process requires stopping to remove trapped material multiple times
Solution Approach 1:
The discharge slots enable continuous cutting action by allowing cut material to be ejected during the cutting process itself, eliminating interruptions and maintaining continuous productive action throughout the hole drilling operation
3Adaptability or versatility
If a hole saw is used to cut fractional holes where the hole overlaps the edge of material, then the cutting flexibility is improved, but there is no material for a pilot bit to drill into when less than 50% of a complete circular hole is needed
Solution Approach 1:
The internal auger extracts and removes material directly without requiring a pilot bit, enabling fractional hole cutting where the hole overlaps the edge of material or less than 50% of a complete circular hole is needed
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 continuous cutting through thick materials and fractional holes without manual removal of cut material, improving efficiency and reducing tediousness, and accommodating various power tool connections.
Implementation Method 1
The internal auger further comprises a blade to cut material and apertures and/or cutouts to accommodate various pins, screws, drill bits, and any other parts of a mandrel connecting the hole saw to the power tool
Data Source
AI summary
A hole saw for quickly cutting holes through workpieces without stopping to eject cut material. The device includes a cylindrical body with cutting teeth on a first end side engageable with a workpiece and a base plate on a second end side engageable with a power tool. The cylindrical body has one or more discharge slots and a removable internal auger secures to the base plate. The one or more blades of the internal auger and ejection of cut material from any of the discharge slots on the cylindrical body and/or the base plate enable cutting deep holes that are not limited by the depth of the cylindrical body. The removable internal auger allows for maintenance and sharpening for an extended use.