Wood Coring Drill Bit With 3D Slots for Precise Shaft Alignment

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Solution Overview

Problem

The misalignment of piping shafts during multi-level building construction leads to structural integrity issues and inaccuracy with traditional power tools, which can violate building codes, especially in areas with rigorous seismic and fire rating codes.

Innovation Solution

A wood coring drill bit with a cylindrical barrel and radially positioned, three-dimensionally curved slots, featuring cutting teeth and gullets, designed for precise hole creation that aligns with code requirements, including a hub for motor connection and materials like medium-carbon steel for durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional power tools (chainsaws, reciprocating saws) are used to excavate wood, then the ability to cut through wood assemblies is achieved, but misalignment of piping shafts and structural integrity damage occur

Engineering Contradiction:
Improveability to cut through woodVSAvoidalignment accuracy of piping shafts
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces traditional reciprocating or chainsaw mechanical cutting systems with a rotary coring drill bit system. The coring bit rotates to bore through wood assemblies, providing precise circular holes that eliminate misalignment issues while maintaining the ability to cut through wood effectively.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention changes the cutting mechanism from linear/reciprocating motion to rotational motion, and from broad cutting paths to precise circular paths with controlled diameter. This parameter change enables accurate alignment of piping shafts across multiple levels while still achieving effective wood cutting.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If traditional power tools are used for excavating wood, then cutting capability is achieved, but structural integrity of the building is compromised

Engineering Contradiction:
Improvecutting capabilityVSAvoidstructural integrity
Core Design Contradiction:
ProductivityVSStrength

Solution Approach 1:

The patent replaces aggressive reciprocating saw or chainsaw mechanisms with a controlled coring drill system that removes only the necessary cylindrical portion of wood. This substitution maintains cutting capability while significantly reducing structural damage by avoiding unnecessary removal of wood material and preventing splintering.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The coring drill bit applies cutting action only to the specific localized area where the hole is needed, rather than making broad cuts. This localized approach maintains structural integrity by leaving the surrounding wood assembly intact and undamaged.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If multiple cuts are made in wood assemblies to correct misalignment, then piping shaft alignment can be improved, but structural integrity decreases

Engineering Contradiction:
Improvepiping shaft alignmentVSAvoidstructural integrity
Core Design Contradiction:
Manufacturing precisionVSStrength

Solution Approach 1:

The coring drill bit system performs preliminary precise positioning and cutting in a single operation, eliminating the need for subsequent corrective cuts. By establishing accurate alignment from the first cut, the system prevents the need for additional cuts that would further compromise structural integrity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11344956B2Wood coring drill bit
Publication Date: 2022.05.31 KV ENTERPRISES LTD
  • US11344956B2 patent drawing
  • US11344956B2 patent drawing
  • US11344956B2 patent drawing

AI summary

Wood core drilling bits for use in wood frame construction of structures in the residential and/or commercial market and sets of the same have a cylindrical barrel defining an axis of rotation and a first end that is open and a second end defined by a hub having a bore therethrough. The open end defines a plurality of cutting teeth and the cylindrical barrel defines a plurality of slots radially therethrough. The plurality of slots are positioned as points of a three-dimensional curve turning about the axis of rotation while moving parallel to the axis of rotation.