Stave Machining Profile Using Non-Rectilinear Neutral Axis
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Solution Overview
Problem
Current methods for machining staves from strips of wood result in significant material losses, especially when the strips have curvatures, due to the inability to accurately adapt the machining profile to the varying shape and width of the wood.
Innovation Solution
A method for determining a machining profile for staves that closely follows the natural profile of the wood strip, using a non-rectilinear neutral axis to minimize material loss by optimizing the width change along the stave.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional rectilinear machining profiles are used on curved wood strips, then the machining process is simple and standardized, but material loss increases significantly
Solution Approach 1:
The patent applies dynamics by transitioning from fixed rectilinear machining profiles to dynamic curved profiles that adapt to the actual geometry of each wood strip. The neutral axis becomes a variable curve rather than a straight line, allowing the machining path to follow the natural contours of the wood and minimize material removal while maintaining structural integrity.
Solution Approach 2:
The patent changes the geometric parameters of the machining profile from constant rectilinear dimensions to variable curved dimensions. The neutral axis is defined by variable coordinates (x, y) that change along the length of the stave, transforming the machining parameters from fixed values to continuous functions that optimize material utilization.
2Quantity of substance
If curved staves with non-rectilinear neutral axes are manufactured, then material utilization improves by 5-10%, but the machining process becomes more complex
Solution Approach 1:
The patent applies preliminary action by first determining the optimal curved neutral axis profile before actual machining occurs. The profile calculation is performed in advance based on the desired stave geometry and wood strip characteristics, allowing the complex curved path to be pre-planned and then executed by the machining equipment without real-time complexity.
Solution Approach 2:
The patent substitutes complex mechanical profile-setting mechanisms with computational geometry methods. Instead of using complex mechanical devices to create curved profiles, the invention uses mathematical calculations to define the neutral axis, which can then be followed by automated machining equipment, replacing mechanical complexity with computational simplicity.
3Loss of substance
If the machining profile adapts closely to the wood strip profile, then material loss is minimized, but measurement and detection precision requirements increase
Solution Approach 1:
The patent applies self-service by using the wood strip's own profile characteristics to define the machining path. The neutral axis is determined based on the natural geometry of the wood itself rather than imposing an external template, allowing the material to guide the machining process and minimize waste while reducing the need for high-precision external measurement systems.
Data Source
AI summary
The present invention relates to a method for determining a profile for machining a stave from a strip of wood. For this purpose, computer means obtain a first piece of data representative of a wood strip profile and determine a second piece of data representative of said machining profile according to said first piece of data, said machining profile being inscribed in said wood strip profile and having a width changing along said stave. Said machining profile has a neutral axis having a non-rectilinear shape over the width of said stave, so that said machining profile follows said wood strip profile, maximizes the stave width and minimizes the losses of material between said strip of wood and said stave.