Canting Drill Guide and Dowel Jig for Precise Angled Hole Drilling
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Solution Overview
Problem
Conventional drilling assist systems fail to align drill bits perpendicular to work surfaces, limit hole depth, and prevent marring and splintering, especially when using drilling tools with bits larger than their shanks or drilling at various angles, and are often complex, costly, or require multiple collars for different bit sizes.
Innovation Solution
A drill guide system that allows for precise depth control and alignment perpendicular to flat surfaces, enabling drilling at various angles using multiple bit sizes, including twist, auger, and Forstner bits, without marring or splintering, and supports dowel holes on edges and faces with adjustable dowel jig attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional collars are used to control drilling depth, then depth limitation is achieved, but drill bit alignment perpendicular to work surfaces is not maintained and marring occurs
Solution Approach 1:
A drill guide bushing serves as an intermediary component between the drill bit and work surface. The bushing is positioned at the desired depth and guides the drill bit through it, ensuring perpendicular alignment and preventing the drill bit from contacting and marring the work surface. The bushing acts as a mediator that transfers the drilling function while protecting the workpiece.
Solution Approach 2:
The drill guide bushing is pre-positioned at the exact depth where the hole should terminate before drilling begins. This preliminary positioning establishes the depth limit and alignment reference in advance, allowing the drill bit to follow the predetermined path and depth without deviation or contact damage to the work surface.
2Adaptability or versatility
If multiple collars are used for different bit sizes, then compatibility with various bit diameters is improved, but device complexity increases
Solution Approach 1:
The drill guide bushing is designed with a universal application approach where a single bushing can accommodate multiple drill bit sizes through its internal geometry and positioning mechanism. The bushing serves multiple functions: depth control, alignment guidance, and compatibility with various bit diameters, eliminating the need for multiple size-specific collars.
Solution Approach 2:
The drill guide system incorporates adjustable or movable components that allow the bushing to adapt dynamically to different drill bit sizes. This dynamic adjustment capability enables the same bushing to maintain proper alignment and depth control regardless of the specific bit diameter being used.
3Manufacturing precision
If tight-fitting cylinders over drill bit flutes are used, then depth control is achieved, but alignment perpendicular to work surfaces and support for various bit-shank configurations is not provided
Solution Approach 1:
The drill guide system is segmented into separate functional components: the drill guide bushing for depth and alignment control, and the drill bit with various shank configurations. This segmentation allows the bushing to focus on its primary function of perpendicular alignment and depth control while being compatible with multiple bit types, rather than trying to integrate all functions into a single tight-fitting cylinder.
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 the field and in shops.