Router Jig Guide Rail for Precise 1911 Frame Finishing
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Solution Overview
Problem
Existing jigs for finishing 80% 2011/1911 pistol frames require expensive machinery, are inefficient for hard materials like steel, and lack precision in manual operations, necessitating a more accessible and accurate method.
Innovation Solution
A router jig system that uses a handheld router, end mill, and drill bits, with a guide bushing and alignment/support rail to align the router with jig side plates, enabling precise cutting and drilling without large machinery, suitable for both steel and aluminum frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If expensive machinery is used to complete the frame, then manufacturing precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces a router jig as an intermediary device that guides a handheld router to achieve precise frame finishing. The jig includes guide rails, alignment features, and support structures that mediate between the simple handheld router and the complex machining task, enabling accurate material removal without requiring expensive CNC machinery or lathes
Solution Approach 2:
The router jig replicates the functionality of expensive machining equipment through a simplified mechanical guide system. By copying the essential alignment and guidance functions of complex machinery into a portable jig with guide rails and support structures, the invention achieves similar precision outcomes using common tools
2Ease of operation
If manual scraping is used to finish the slide rails, then ease of operation is improved, but productivity and precision deteriorate
Solution Approach 1:
The router jig enables continuous material removal through the handheld router, replacing the discontinuous manual scraping process. The guide rails ensure the router moves continuously along the slide rails with consistent cutting action, significantly increasing productivity while maintaining ease of operation through the simple push-follow motion
3Ease of operation
If manual scraping is used to finish the frame, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The router jig acts as an intermediary that introduces precision guidance mechanisms (guide rails, alignment features) into the simple manual operation. The jig mediates between the operator's hand movements and the cutting tool, ensuring the router follows the exact path needed for precise slide rail finishing while maintaining ease of operation
Solution Approach 2:
The invention replaces the imprecise manual scraping mechanism with a router-based cutting system guided by mechanical guide rails. This substitution uses the router's rotating cutter bit instead of manual scrapers, achieving superior precision through controlled material removal while the guide rails provide the mechanical constraint needed for accuracy
4Manufacturing precision
If expensive and hard to acquire machinery is used, then manufacturing precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The router jig uses inexpensive, commonly available components including a handheld router, simple guide rails, and basic support structures. Rather than requiring expensive, hard-to-acquire machinery, the invention employs affordable tools that can be easily obtained by hobbyists and small workshops, making precise frame finishing accessible to everyone
Data Source
AI summary
An assembly of a router secured to a router base plate and an assembly of jig side plates between which is a work piece such as a frame piece of a pistol firearm. The former assembly is atop the later assembly. The router base plate has a boss inside of which a router guide bushing is rotatable. A guide rail attaches or fastens to the router base plate and aligns the router guide bushing to a locating edge of the one of the jig side plates to create a stable, supporting platform for the handheld router to stay mounted to the router base plate and that guides movement of the handheld router across the one of the jig side plates smoothly as the handheld router cuts rails of the work piece between the pair of jig side plates.