Fletching Jig With Dual Shaft Supports and Stationary Vane Nest

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Solution Overview

Problem

Prior art fletching tools face inaccuracies in aligning and placing vanes on arrow shafts due to variable nock configurations and inconsistent movement of vane clamps or nests during the fletching process, leading to inconsistent alignment and angle placement.

Innovation Solution

A fletching jig with a dual arrow shaft support assembly and a vane nest system that uses springs for consistent alignment, where the arrow shaft is fixed and the vane nests remain stationary, allowing precise control over vane placement and angular offset through adjustable notches and positioning members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the nock is used for dual purpose of alignment and rotation, then the fletching process can be simplified, but the vane placement accuracy deteriorates due to variable nock configurations

Engineering Contradiction:

Improvefletching process complexityVSAvoidvane placement accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The device separates the alignment function (handled by the shaft support assembly with V-blocks) from the rotation function (handled by the independently rotatable vane nest). This segmentation allows each component to be optimized for its specific function, eliminating the accuracy problems caused by using the nock for both purposes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The vane nest acts as an intermediary between the shaft and the vanes. It provides a stable, repeatable reference frame for vane placement that is independent of the nock's variable configurations, thereby improving placement accuracy without complicating the overall process

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the vane clamp or vane nest is moved each time an additional vane is placed, then the fletching process can accommodate multiple vanes, but the alignment and angle consistency deteriorates

Engineering Contradiction:

Improvemulti-vane placement capabilityVSAvoidalignment and angle consistency

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The vane nest is pre-positioned on the shaft before any vanes are attached. This preliminary positioning establishes a fixed reference frame that remains stationary throughout the entire fletching process, ensuring consistent alignment and angles for all vanes regardless of how many are being placed

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of moving the vane nest to accommodate each vane (as in prior art), the invention inverts the approach by keeping the vane nest stationary and having the vanes be positioned relative to it. This reversal of the traditional movement paradigm maintains consistency while enabling multi-vane placement

Inventive Principle:

Principle #13The other way round (Inversion)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures consistent and accurate vane placement on arrow shafts, improving alignment and reducing inconsistencies in the fletching process, allowing for precise control during the gluing process and enhancing arrow performance.

Implementation Method 1

A fletching jig with a dual arrow shaft support assembly and a vane nest system that uses springs for consistent alignment

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS9823038B2Fletching jig

Publication Date: 2017.11.21 GOAT TUFF PROD LLC

AI summary

A fletching jig, which includes two support assemblies for an arrow shaft and a vane nest, wherein an arrow shaft disposed on the two support assemblies is aligned with a vane removeably disposed in the vane nest.