Floor Panel Groove Machining With Inclined Disc Cutters
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Solution Overview
Problem
Existing methods for machining grooves in the underside of floor panels are inefficient and lack precision, particularly when cutting multiple parallel grooves with inclined inner walls, which affects the adhesive capacity and ventilation of the underfloor space.
Innovation Solution
A method using a device with rotary machining units and axially separated profile disc milling cutters, where the spindle axis is inclined relative to the panel plane, combined with lamellar retaining and pressing transport assemblies, ensures precise and efficient cutting of parallel grooves with inclined inner walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional CNC router with a horizontal bit is used to machine grooves in the underside of a floor panel, then the machining process can be performed, but the bit may collide with the feed mechanism and cause damage, and machining accuracy deteriorates when the groove depth exceeds the bit length
Solution Approach 1:
The patent inverts the conventional machining approach by using a vertical bit instead of a horizontal bit, and machining from the top surface instead of the underside. This inversion eliminates the collision risk between the bit and feed mechanism while enabling accurate machining of deep grooves that exceed the bit length.
Solution Approach 2:
The patent changes the machining dimension from horizontal (conventional) to vertical. By orienting the bit vertically and machining downward from the top surface, the system achieves both collision-free operation and the capability to machine groove depths greater than the bit length through controlled vertical feed.
2Ease of manufacture
If a horizontal bit is used for machining grooves, then the setup is conventional, but the bit length is limited and collision with feed mechanism may occur
Solution Approach 1:
The patent inverts the conventional horizontal bit arrangement to a vertical bit configuration. This simple inversion removes the limitation on groove depth relative to bit length and eliminates collision risks, while maintaining ease of manufacture through straightforward adapter design.
3Length of stationary object
If the groove depth exceeds the bit length, then deeper grooves can be targeted, but machining accuracy deteriorates in conventional horizontal machining
Solution Approach 1:
The patent transitions from horizontal to vertical machining dimension, enabling the bit to reach deeper groove depths while maintaining precision through controlled vertical feed motion. The vertical orientation allows the full bit length to be utilized effectively for deep groove machining without the accuracy losses experienced in horizontal machining.
Data Source
Figure 1~2a
Figure 2b~3
Figure 4~5
AI summary
According to the method, a floor panel (2) is inserted between a lamellar retaining transport assembly (7) and a lamellar pressing transport assembly (8, 9); the floor panel (2) clamped between the moved lamellar retaining transport assembly (7) and the lamellar pressing transport assembly (8, 9) is subjected to a feed motion through linear movement; a cutting head (10, 11) is put into a rotary motion around axes of rotation (X1, X2) and parallel grooves (17, 21, 22) are machined in the underside (12) of the floor panel (2), using the feed motion imparted to it by the lamellar retaining transport assembly (7) and the lamellar pressing transport assembly (8, 9). The machining of the parallel grooves (17, 21, 22) in the underside (12) of the floor panel (2) is performed with the cutting head (10, 11) comprising a set of axially separated profile disc cutters having stepwise-changing diameters, the machining of the parallel grooves (17, 21, 22) being performed when the axis of rotation (X1, X2) of the spindle (23, 24) of the cutting head (10, 11) is inclined at an angle (+α, -α) relative to the plane of the underside (12) of the machined floor panel (2).