Methods and arrangements relating to edge machining of building panels
AssigneeVälinge Innovation AB
InventorsDarko Pervan, Peter Wingardh
Life of this patent
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Abstract
A tool configuration for producing an improved locking system of a floor panel and a method incorporating such tool configuration. The tool configuration is a non-rotating tool configuration profiling certain surfaces of the joint edge of the floor panel, resulting in that the tolerances can be kept on a low level.
Claims36
A method for producing a mechanical locking system in a floor panel comprising a top surface layer formed of one or more layers on a front side of the floor panel that is configured to be a visible surface when the floor panel is locked to another floor panel on a subfloor, a core having a core surface in contact with the top surface layer, and a mechanical locking system comprising components on a first edge and a second edge of the floor panel for horizontal locking of the floor panel with other similar floor panels at a vertical plane, the components comprising a tongue on one of the first edge or the second edge, a tongue groove on the other of the first edge or the second edge, and a first pair of locking surfaces in the first edge of the floor panel, the first pair of locking surfaces comprises a locking surface on a top part of the first edge at the vertical plane and above the tongue, and a locking surface on a locking groove in the first edge, and the components further comprising a second pair of locking surfaces in the second edge of the floor panel, the second pair of locking surfaces comprises a locking surface on a top part of the second edge at the vertical plane and above the tongue groove, and a locking surface on a locking element of a locking strip on the second edge, the first and second pair of locking surfaces configured to horizontally lock the first and second edges of the floor panel with adjacent edges of similar floor panels to prevent a displacement of the edges outwardly away from each other and inwardly against each other, the method comprising:
- displacing the floor panel in a feeding direction relative to non-rotating chip-removing surfaces located along the feeding direction to remove the core of the floor panel from at least the core surface and extending continuously to the locking strip and form in the first or the second edge of the floor panel via the non-rotating chip-removing surfaces at least a part of the first or second pair of locking surfaces.
A method for producing a mechanical locking system in a floor panel having a top surface layer on a front side of the floor panel that is configured to be a visible surface when the floor panel is locked to another floor panel on a subfloor, the floor panel comprising a mechanical locking system on a first and a second edge of the floor panel for horizontal and vertical locking of the floor panel with other similar floor panels, the method comprising:
- displacing the floor panel in a feeding direction relative to a carving tool so that the carving tool removes a portion of the floor panel extending from a top-most surface of the top surface layer of the floor panel such that at least initial removal of the top-most surface layer is performed by the carving tool, and forms on the first or second edge of the floor panel via the carving tool a tongue or a groove for vertically locking the floor panel with another similar floor panel.
A tool for producing a mechanical locking system in a floor panel comprising a top surface layer, a core and a mechanical locking system comprising components on a first edge and a second edge of the floor panel for horizontal locking of the floor panel with other similar floor panels at a vertical plane, the components comprising a tongue and a tongue groove and a first pair of locking surfaces in the first edge of the floor panel, the first pair of locking surfaces comprises a locking surface on a top part of the first edge at the vertical plane and above the tongue, and a locking surface on a locking element in the first edge, and the components comprising a second pair of locking surfaces in the second edge of the floor panel, the second pair of locking surfaces comprises a locking surface on a top part of the second edge at the vertical plane and above the tongue groove, and a locking surface on a locking groove on the second edge, the first and second pair of locking surfaces configured to horizontally lock the first and second edges of the floor panel with adjacent edges of similar floor panels to prevent a displacement of the edges outwardly away from each other and inwardly against each other, the tool comprising:
- a plurality of non-rotating chip-removing teeth, each chip-removing tooth having a single chip-removing tip only and including an attachment device to be individually detachably attached to a fixture of the tool via the attachment device such that detachment of a chip-removing tooth from the fixture does not manipulate the fixture, the chip-removing tip has a clearance angle between 2 to 8 degrees, a cutting angle of between 55 to 65 degrees, and a rake angle between 20 to 30 degrees, the plurality of non-rotating chip-removing teeth for forming in the first or the second edge at least a part of the first or second pair of locking surfaces.
A carving tool for producing a mechanical locking system in a floor panel comprising a mechanical locking system on a first and a second edge of the floor panel for horizontal and vertical locking of the floor panel with other similar floor panels,
- the carving tool comprising a plurality of teeth each of which includes a single non-rotating chip-removing tip only and is individually detachably attached to a fixture with a screw penetrating the tooth, the non-rotating chip-removing tip has a clearance angle between 2 to 8 degrees, a cutting angle of between 55 to 65 degrees, and a rake angle between 20 to 30 degrees, the carving tool configured to form on the first or the second edge of the floor panel a tongue or a groove.
A method for producing a mechanical locking system in a floor panel comprising a top surface layer on a front side of the floor panel that is configured to be a visible surface when the floor panel is locked to another floor panel on a subfloor, a core and a mechanical locking system comprising components on a first edge and a second edge of the floor panel for horizontal locking of the floor panel with other similar floor panels at a vertical plane, the components comprising a tongue on one of the first edge or the second edge, a tongue groove on the other of the first edge or the second edge, and a first pair of locking surfaces in the first edge of the floor panel, the first pair of locking surfaces comprises a locking surface on a top part of the first edge at the vertical plane and above the tongue so as to be closer to the top surface layer than to an oppositely facing surface of the floor panel, and the components further comprising a second pair of locking surfaces in the second edge of the floor panel, the second pair of locking surfaces comprises a locking surface on a top part of the second edge at the vertical plane and above the tongue groove so as to be closer to the top surface layer than to the oppositely facing surface of the floor panel, each of the locking surfaces at the top parts of the first and second edges configured to contact a corresponding locking surface at the top part of a first or a second edge of a similar floor panel at the vertical plane, the first and second pair of locking surfaces configured to horizontally lock the first and second edges of the floor panel with adjacent edges of similar floor panels to prevent a displacement of the edges outwardly away from each other and inwardly against each other, the method comprising:
- displacing the floor panel in a feeding direction relative to non-rotating chip-removing surfaces located along the feeding direction to form in the first or the second edge of the floor panel via the non-rotating chip-removing surfaces the locking surface on the top part of the first edge at the vertical plane and above the tongue, or the locking surface on the top part of the second edge at the vertical plane and above the tongue groove.
Dependencies are inferred from the claim text.