Milling Coupling Parts on Decorative Panels
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Solution Overview
Problem
Existing methods for milling coupling parts on decorative panels, especially those with elastic sound-absorbing layers, struggle to achieve the desired accuracy, leading to incorrect installation due to compressive forces during the milling process.
Innovation Solution
A method involving multiple milling operations with controlled material removal and limited compressive forces, using a continuous milling machine to create coupling parts with precise tolerances by milling a tongue and groove configuration, where each operation removes at most 0.3 mm of material perpendicular to the sealing face, and utilizing pressure shoes with pressures not exceeding 0.8 bar to prevent panel displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If material is milled away in a single operation to form coupling parts, then productivity is improved, but manufacturing precision deteriorates due to compressive forces causing panel displacement
Solution Approach 1:
The milling process is divided into multiple sequential operations: a first milling operation removes the bulk of material to form the rough shape of the coupling part, followed by a second milling operation that removes at most 0.3 mm of material to achieve the final precise dimensions of the sealing face. This segmentation allows the panel to remain stable during each operation while achieving both high productivity and precision.
Solution Approach 2:
The first milling operation performs preliminary material removal to create a rough shape of the coupling part before the final precision milling. This preliminary action reduces the total material that needs to be removed in the second operation, thereby minimizing compressive forces and displacement during the critical precision-milling stage.
2Manufacturing precision
If compressive forces are applied during milling to maintain panel stability, then manufacturing precision improves, but the panel structure deteriorates due to displacement of delicate layers
Solution Approach 1:
The second milling operation is designed to remove only a small amount of material (at most 0.3 mm) to achieve the final precise dimensions. This partial action approach ensures that compressive forces remain below the threshold that would cause displacement of the delicate sound-absorbing layer, while still achieving the required manufacturing precision for the sealing face.
3Manufacturing precision
If multiple milling operations are performed to achieve precise tolerances, then manufacturing precision improves, but productivity deteriorates due to increased process time
Solution Approach 1:
The milling process is segmented into two distinct operations with clearly defined functions: the first operation removes the majority of material efficiently, while the second operation removes at most 0.3 mm to achieve final precision. This segmentation optimizes the balance between productivity and precision by minimizing the number of operations while ensuring the required tolerance is achieved.
Data Source
AI summary
A method includes the milling of coupling parts on a pair of opposite edges of a decorative panel. These coupling parts are configured for coupling said panels on their opposite edges. The coupling parts may comprise locking parts for locking the coupled panels. The opposite edges comprise sealing faces, which in the coupled state are in contact or abut closely to each other. In a first milling operation, material is milled away to form a rough shape of the coupling part. In a second milling operation, the sealing face acquires its final form and dimension, wherein in the second milling operation, everywhere perpendicular to the final first sealing face, at most 0.3 mm of material is milled away.