Router Template Jig for Precise Multi-Joint Woodworking
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Solution Overview
Problem
Current woodworking methods for connecting workpieces using routers are expensive and space-consuming due to the need for individual structures to form various connections, such as dovetails, box joints, and mortise and tenon joints, which lack efficiency and precision.
Innovation Solution
A template holding jig and workpiece joining jig system that includes a template support, workpiece support, and template guide, allowing for precise alignment and adjustment of templates and workpieces, with features like adjustable side stops, miter fences, and router guide regions to facilitate accurate routing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual structures are used for each connection type (dovetails, box joints, mortise and tenon), then each connection can be formed accurately, but the workshop becomes expensive and space-consuming
Solution Approach 1:
The patent implements a universal jig system with a common base that can accommodate multiple connection types through interchangeable templates and adjustable components. The jig includes a standardized workpiece support, template support, and routing surface that work together with different templates to create various joints (dovetails, box joints, mortise and tenon), eliminating the need for separate dedicated structures for each connection type.
Solution Approach 2:
The jig system is divided into modular, interchangeable components including removable templates, adjustable side stops, and separable template supports. This segmentation allows users to swap between different templates for different connection types while keeping the main jig structure, reducing overall complexity and space requirements compared to having complete separate structures for each joint type.
2Adaptability or versatility
If multiple individual structures are maintained for different connection types, then each connection type has dedicated functionality, but the quantity of equipment increases
Solution Approach 1:
The universal jig serves multiple functions by supporting various templates for different connection types. The standardized interface between the jig base and templates allows the same physical structure to create dovetails, box joints, mortise and tenon connections, and other joint types, thereby reducing the total number of structures needed while maintaining full adaptability.
Solution Approach 2:
Different templates and accessories are designed to nest within or attach to the common jig structure. The templates can be stored when not in use, and the modular components can be stacked or arranged compactly, effectively reducing the space and quantity of equipment required while preserving all connection capabilities.
3Stability of the object's composition
If templates are fixed to the template support, then the template position is stable, but the template cannot be adjusted for different routing operations
Solution Approach 1:
The template support system incorporates dynamic adjustment mechanisms including slots, holes, and movable components that allow the template position to be changed. The template can be secured at multiple positions along guide slots or held by movable clamps, providing both stability when fixed and adjustability when repositioned, depending on the specific routing operation required.
Solution Approach 2:
The template support acts as an intermediary between the fixed jig base and the removable templates. It provides a standardized interface with adjustment features (slots, holes, clamps) that mediate between the need for stable template positioning during routing and the need to reposition or remove templates for different operations, allowing both stability and adaptability.
4Area of stationary object
If the template support extends beyond the workpiece support, then the template has sufficient support area, but the routing accuracy relative to the workpiece decreases
Solution Approach 1:
The template support is designed with non-uniform geometry where the support area is concentrated in the critical region adjacent to the workpiece support. The template support may have a reduced width or offset position away from the workpiece support, providing sufficient local support where needed for template stability while preventing excessive extension that would compromise routing accuracy. This localized optimization ensures the template is supported adequately without sacrificing precision.
Data Source
AI summary
A template holding jig for holding a template for use with a router for routing a workpiece is provided. The holding jig may also be part of a workpiece joining jig that includes a plurality of templates. The template holding jig includes a template support, a workpiece support and a template guide. The template support defines a template support plane. The workpiece support defines a workpiece support plane extending perpendicular to the template support plane. The template guide defines at least one abutment preventing motion of a template located on the template support parallel to a first axis being parallel to the workpiece support plane and parallel to the template support plane. The at least one abutment permits motion of the template parallel to a second axis being orthogonal to the workpiece support plane and perpendicular to the first axis and parallel to the template support plane.