Adjustable Corner Guide for Full-Edge Profiling and Angle Drilling
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Solution Overview
Problem
Existing tools, such as handheld routers and Dremel tools, are limited in their ability to mill various profiles at corner edges of work pieces and drill holes at desired angles due to the need for multiple bits and the interference of annular base plates with the work piece.
Innovation Solution
A corner guide apparatus with orthogonal planar surfaces and an adjustable tool holder assembly that allows for independent adjustment of the tool's position, orientation, and angle, enabling a single tool bit to perform different milling operations, including edge trimming, chamfering, rabbeting, and drilling, by aligning the tool bit with a V-shaped notch and using an arcuate track for angular adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional router with annular base plate is used to mill profiles at corner edges, then the tool can perform milling operations, but the annular base plate contacts another part of the work piece and prevents the tool bit from milling the entire edge
Solution Approach 1:
The invention extracts and removes the annular base plate from the routing system, replacing it with a corner guide assembly that has minimal interference with the work piece. The guide surfaces contact only the corner edge surfaces, allowing the tool bit to access the entire corner edge without base plate obstruction.
Solution Approach 2:
The routing system is segmented into separate functional components: the corner guide assembly with orthogonal guide surfaces for positioning, the tool holder for mounting the tool bit, and the tool bit itself. This segmentation allows each component to perform its specific function without interfering with others, particularly eliminating the base plate interference problem.
2Adaptability or versatility
If multiple different tool bits are used to mill different profiles (chamfer, trimmed edge, rabbet, rounded corner), then various profile types can be achieved, but the user must have access to several bits and switch between them
Solution Approach 1:
The tool holder assembly incorporates dynamic adjustment mechanisms including an arcuate track for angular orientation adjustment and longitudinal position adjustment, allowing a single tool bit to be repositioned and reoriented to perform multiple profiling operations (chamfering, trimming, rabbeting, rounding) that previously required different dedicated bits.
Solution Approach 2:
The corner guide assembly with adjustable tool holder creates a universal system where one tool bit can perform multiple profiling functions. The adjustable mechanism allows the same tool bit to mill different profiles by changing its position and orientation relative to the corner edge, eliminating the need for multiple specialized bits.
3Adaptability or versatility
If a rotary tool with accessory is used to resemble a conventional router, then the tool can mill profiles, but the system inherits all deficiencies associated with conventional routers including base plate interference
Solution Approach 1:
The invention extracts the problematic annular base plate from the system and replaces it with a corner guide assembly that uses orthogonal guide surfaces for positioning without interfering with the work piece. The guide surfaces contact only the corner edge surfaces, allowing complete access for the tool bit.
Solution Approach 2:
The corner guide assembly acts as an intermediary positioning system between the rotary tool and the work piece corner edge. It provides the necessary guidance and positioning functions previously performed by the base plate, but without the interference problem, by using orthogonal guide surfaces that contact only the corner surfaces.
Data Source
AI summary
An apparatus for guiding a rotary tool along a work piece corner edge formed by the intersection of two orthogonal planar surfaces, has a corner guide formed by two orthogonal planar components and defining a longitudinal axis from back to front. An adjustable tool holder assembly is affixed to the corner guide, includes a tool holder, and is configured to independently adjust a tool holder longitudinal position along the corner guide, a radial position of the tool holder relative to the corner guide, and an angular orientation of the tool holder rotating in a transverse plane orthogonal to the longitudinal axis.