Axial Adjustment Mechanism for Chipper Disc Shaft Positioning
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Solution Overview
Problem
Existing wood chipping apparatuses face challenges in adjusting the axial position of a rotating shaft and chipper disc combination without obstructing the end face of the shaft, which conflicts with the space required for engine and transmission attachment, and fail to effectively mitigate damage from unintentional chipping of metal or non-wood materials.
Innovation Solution
An axial adjustment mechanism that allows for the setting and adjustment of the shaft and chipper disc position without attaching to the shaft's end face, utilizing a combination of radial and axial bearing assemblies and a recoil mechanism to manage unwanted forces, enabling controlled axial movement and preventing damage from metal chipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an axial adjustment mechanism is attached to the shaft's end face, then the axial position of the shaft and chipper disc can be adjusted, but the space required for engine and transmission attachment is obstructed
Solution Approach 1:
The axial adjustment mechanism is relocated from the end face dimension to the side dimension of the shaft. The mechanism attaches to the shaft's cylindrical surface rather than its end face, allowing axial positioning adjustment while preserving the end face for engine and transmission attachment. This dimensional relocation resolves the spatial conflict between adjustment functionality and power transmission requirements.
2Strength
If a rigid connection is used between the shaft and chipper disc, then the structural strength is improved, but the damage from unintentional chipping of metal or non-wood materials increases
Solution Approach 1:
The connection between the shaft and chipper disc is changed from a rigid fixed connection to a dynamic recoil-capable connection. The chipper disc is allowed to recoil axially along the shaft when subjected to harmful forces such as metal chipping, while maintaining structural integrity during normal operation. This dynamic capability enables the system to absorb shock loads from unintentional metal or non-wood material chipping without causing catastrophic damage.
3Manufacturing precision
If the axial position of the shaft is fixed, then the manufacturing precision is improved, but the ability to adjust for different chipping conditions is reduced
Solution Approach 1:
An axial adjustment mechanism is implemented that allows the operator to pre-set the axial position of the shaft and chipper disc combination before operation. This preliminary adjustment capability enables optimization of chipping conditions for different material types and sizes, while the position remains fixed during normal operation to maintain manufacturing precision. The mechanism provides adaptability without compromising operational stability.
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
Enables precise axial positioning of the shaft and chipper disc without obstructing the shaft's end face, reducing damage from metal chipping and optimizing space usage, while effectively managing axial forces and vibrations.
Implementation Method 1
a first bearing assembly positioned alongside said shaft and configured to support said shaft
Implementation Method 2
a spring positioned within said second bearing assembly and configured to bias said second bearing assembly in an axial direction
Data Source
AI summary
An apparatus, system and method for adjusting and setting a fixed position of an axially displaceable shaft and rotary chipper disc combination, without requiring an attachment to or obstruction of an end face of either end of the axially displaceable shaft. A rotary chipper disc recoil mechanism is also provided for the purpose of detection of unwanted axial forces placed upon the rotating shaft caused by unintentional chipping of metal, and for limiting consequential damage caused by the unintentional chipping of metal and other non-wood materials.