Air Gun Power Spring Dampening via Nested Guide Tube
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Solution Overview
Problem
Spring-powered air guns suffer from inaccuracy and vibration due to the radial expansion and contraction of the power spring during firing, which results in oscillation and reduced power delivery.
Innovation Solution
A dampening system comprising a rear guide tube and a sleeve that radially supports the power spring, reducing its free length to limit oscillation and vibration by encapsulating a portion of the spring between the guide tube and the sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power spring is allowed to expand radially during firing, then the air gun can deliver full power, but vibration and oscillation increase reducing accuracy
Solution Approach 1:
A dampening system comprising a rear guide tube and a sleeve is introduced as an intermediary between the power spring and the charging system components. The rear guide tube is disposed within the hollow core of the power spring, while the sleeve surrounds the rear guide tube, creating an annular gap that radially constrains the power spring during expansion, thereby reducing vibration and oscillation while maintaining power delivery
2Manufacturing precision
If the power spring is constrained radially to reduce vibration, then accuracy improves, but the spring length free to oscillate increases
Solution Approach 1:
The dampening system segments the power spring into constrained and free portions. The rear guide tube and sleeve structure radially constrains a specific portion of the power spring (where the annular gap is defined), while allowing the remaining length to remain free. This segmentation enables localized vibration reduction without compromising the overall functional length of the power spring
3Object-affected harmful factors
If the power spring is fully constrained to eliminate oscillation, then vibration is minimized, but the complexity of the charging system increases
Solution Approach 1:
The dampening system employs a nested structure where the rear guide tube is disposed within the hollow core of the power spring, and the sleeve surrounds the rear guide tube. This nested arrangement consolidates multiple damping functions into a compact integrated assembly that fits within the existing charging system geometry, minimizing additional complexity while effectively reducing oscillation
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
The dampening system effectively reduces the amplitude of oscillations and enhances the accuracy and power delivery of the air gun by stiffening the power spring and minimizing vibration.
Implementation Method 1
A dampening system comprising a rear guide tube and a sleeve that radially supports the power spring, reducing its free length to limit oscillation and vibration
Data Source
AI summary
A vibration dampening system for an air gun charging system includes a rear guide tube and a forward guide tube that are received within opposite ends of an air gun power spring, and a sleeve that fits concentrically over the power spring. The rear guide tube and the sleeve cooperate to reduce the free length of the power spring allowed to vibrate, which reduces vibration and improves firing performance.