Canting Drill Guide Assembly for Non-Marring Angled Hole Drilling
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Solution Overview
Problem
Existing drill depth stop tools fail to align drilling tools perpendicular to working surfaces and at various angles, often causing marring and splintering, and are limited in their ability to handle drilling tools with bits larger than their shanks, while also being cumbersome and requiring additional tools for adjustments.
Innovation Solution
A drill guide system with a canting base attachment and dowel jig attachment that allows for precise alignment and depth control of drilling tools with bits of various diameters, enabling drilling perpendicular to and at angles relative to flat or cylindrical surfaces without marring, and accommodating tools with bits larger than their shanks, without the need for additional tools or adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing drill depth stop tools are used, then drilling depth can be limited, but the drilling tools cannot be aligned perpendicular to working surfaces and at various angles
Solution Approach 1:
The drill guide assembly combines multiple functions into a single device: it provides depth stopping, perpendicular alignment, and angular alignment capabilities. The body with perpendicular surfaces and the canting base with adjustable angles allow the same device to align drilling tools both perpendicular to working surfaces and at various inclined angles, eliminating the need for separate alignment tools.
2Manufacturing precision
If existing drill depth stop tools are used, then drilling depth can be controlled, but they cause marring and splintering of work surfaces
Solution Approach 1:
The drill guide body acts as an intermediary between the drilling tool and the work surface. The bottom surface of the body contacts the work surface instead of the drilling tool's flute guard or collar, preventing marring and splintering. The depth stopping surfaces provide controlled depth limitation without the harmful contact that traditional depth stop tools cause.
3Manufacturing precision
If existing drill depth stop tools are used, then drilling depth can be limited, but they cannot accommodate drilling tools with bits larger than their shanks
Solution Approach 1:
The drill guide assembly is designed to accommodate various drilling tool configurations. The body and canting base structure support bits that are larger than their shanks, and the indexing system with multiple positions allows the same device to work with different bit sizes and types, including twist bits, spade bits, and Forstner bits.
4Manufacturing precision
If existing drill depth stop tools are used, then drilling depth can be controlled, but they are cumbersome and require additional tools for adjustments
Solution Approach 1:
The drill guide assembly merges the depth stopping mechanism, alignment surfaces, and angle adjustment capability into a single integrated device. The body contains both perpendicular alignment surfaces and angled stopping surfaces, while the canting base integrates the angle adjustment mechanism with the depth control feature, eliminating the need for separate alignment tools and simplifying adjustments.
5Manufacturing precision
If drill presses are used, then holes can be drilled to precise depths and alignments, but work pieces must be small enough to fit within them
Solution Approach 1:
The drill guide assembly extracts the alignment and depth control functions from the drill press and creates a portable, hand-held version. By removing the need for a fixed drill press structure and incorporating self-contained alignment surfaces and depth stopping mechanisms, the device can be used on work pieces of any size that can be manually positioned.
6Ease of operation
If self-centering dowel jigs are used, then dowel holes can be drilled on edges and faces, but work pieces must have uniformly thick edges and zero or two veneered faces
Solution Approach 1:
The dowel jig attachment uses a dynamic positioning system with sliding blocks and adjustable stops rather than a fixed self-centering mechanism. This allows the attachment to adapt to various work piece configurations including non-uniform thickness and different numbers of veneered faces, providing flexibility in positioning dowel holes on edges and faces.
Data Source
AI summary
This invention includes a drill guide (drill depth stop and alignment tool), canting base attachment, and self-aligning dowel jig attachment that allows users to drill holes to prescribed depths into flat work surfaces using various sizes of twist and auger bits while eliminating marring and reducing wood splintering. The canting base attachment allows users to drill holes to prescribed depths and at variable angles into flat surfaces and both large and small cylinders with no free ends using various kinds and sizes of drilling tools without marring. The dowel jig attachment allows users to drill dowel holes to prescribed depths in edges and faces of work pieces that are evenly spaced apart by numerous gauged distances and at infinitely adjustable distances from edges. This invention has drill press-like capabilities and can be used in fields and shops.