Bow Axle Assembly Snap-On Spacer Tuning
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Solution Overview
Problem
The existing methods for tuning compound bows are laborious, time-intensive, and require disassembly, involving the iterative process of adding and removing spacers on the axle assembly to adjust the lateral position of rotatable members, which is inefficient and necessitates specialized equipment.
Innovation Solution
The introduction of snap-on spacers that can be axially adjusted on the axle shaft without disassembling the bow, using a tool to facilitate insertion and removal, and a configuration that limits the drawing of bow limbs together to prevent thrust loading and maintain a predetermined spacing, allowing for precise tuning without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional spacer adjustment methods are used, then the rotatable member position can be adjusted, but the bow must be disassembled and specialized equipment is required
Solution Approach 1:
The spacer assembly is segmented into a body portion and separate retention arms that can be independently positioned. The retention arms can be inserted through openings in the axle assembly and engaged with the axle shaft, allowing the spacer to be adjusted without disassembling the entire bow. This segmentation enables easy adjustment while maintaining bow integrity.
Solution Approach 2:
The retention arms act as intermediaries between the spacer body and the axle shaft. These arms can be engaged with the axle shaft through openings in the axle assembly, providing a mechanism to adjust the spacer position without requiring disassembly of the bow or specialized equipment. The retention arms serve as a mediating structure that enables adjustment while maintaining the overall assembly integrity.
2Manufacturing precision
If iterative spacer adjustment is performed, then tuning precision is improved, but time consumption increases
Solution Approach 1:
The spacer assembly is designed to be dynamically adjustable through the retention arms that can be inserted and removed from the axle shaft through openings in the axle assembly. This dynamic adjustment capability allows for precise tuning without requiring repeated disassembly and reassembly operations, significantly reducing the time needed for iterative adjustments while maintaining high tuning precision.
3Ease of operation
If spacers are added and removed on the axle, then the rotatable member position is adjusted, but thrust loading is applied to the bearing
Solution Approach 1:
The spacer assembly is divided into a body portion and retention arms that can be independently engaged with the axle shaft. This segmentation allows the retention arms to be inserted through openings in the axle assembly and engaged with the axle shaft without applying thrust loading to the bearing, as the adjustment mechanism is distributed across multiple contact points rather than concentrated at the bearing.
Solution Approach 2:
The retention arms serve as intermediaries that distribute the adjustment force across multiple contact points with the axle shaft, rather than concentrating thrust loading at the bearing. By engaging the retention arms with the axle shaft through openings in the axle assembly, the force is distributed along the retention arm structure, reducing the thrust load on the bearing while still enabling precise position adjustment.
Data Source
AI summary
An axle assembly for a bow. The assembly includes spacers that can be used to adjust the position of a rotatable member axially along an axle that supports the rotatable member. The spacers can each have a snap-on configuration and can be installed and removed from the axle using an installation tool. The rotatable member can be mounted on the axle by a bearing assembly, and the axle assembly can include features for preventing thrust load from being applied to the bearing assembly.