Timber-Working Device Timing Link for Synchronized Drive Arms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In timber-working devices, variance in stem size or linearity leads to inefficiencies due to asynchronous closure of drive arms, resulting in uneven contact between feed wheels and the stem, affecting operations like debarking and feeding.
Innovation Solution
A timing link with an elongate member and apertures allows for adjustable connection between drive arms, enabling synchronized closure and accommodating stem variance through a looser fit and sliding mechanism, ensuring consistent contact and efficient feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid timing link with fixed apertures is used to synchronize drive arms, then synchronized closure is achieved, but contact consistency deteriorates due to stem size and linearity variance
Solution Approach 1:
The timing link incorporates elongate apertures that allow dynamic adjustment of pin position, enabling the linkage geometry to adapt to varying stem dimensions while maintaining synchronized drive arm closure. This dynamic capability resolves the contradiction by allowing the system to maintain both synchronization and contact consistency across different operating conditions.
Solution Approach 2:
The elongate apertures enable change in the effective length and geometry of the timing link by allowing the pin to slide to different positions. This parameter change allows the timing link to accommodate stems of varying sizes and linearity, maintaining reliable contact while preserving synchronized closure through adjustable linkage parameters.
2Ease of manufacture
If a fixed geometry timing link is used, then manufacturing simplicity is maintained, but adaptability to stem variance deteriorates
Solution Approach 1:
The timing link transitions from a fixed geometry component to a dynamically adjustable one through the incorporation of elongate apertures. This allows the same manufactured part to adapt to various stem conditions, resolving the contradiction between manufacturing simplicity and adaptability by maintaining a simple single-piece construction that gains versatility through the elongate aperture design.
3Manufacturing precision
If drive arms are constrained to close at the same rate, then centering accuracy is improved, but contact pressure distribution deteriorates due to stem size variations
Solution Approach 1:
The elongate apertures allow the timing link to adjust its effective geometry by changing the pin position, which modifies the linkage ratios between drive arms. This parameter change enables the system to maintain accurate centering while distributing contact pressure more evenly across stems of varying sizes, resolving the contradiction between centering precision and pressure distribution.
Data Source
AI summary
A timber-working device having a first pivoting drive arm and a second pivoting drive arm, and a timing link for connecting them. The timing link includes an elongate member having a first end and a second end. A first aperture is at the first end and a second aperture at the second end. At least one of the first aperture and the second aperture is elongate along the length of the member.