Method of forming locking groove in groove flank

A method of forming a locking groove of a joint groove in a panel, that is part of a tongue-and-groove joint for connecting neighboring panels;

• the method comprising the steps of:
• providing the panel having a first face and a second face;
• forming the locking groove being provided in the part of the joint groove surrounded on both sides by groove flanks;
• the groove flanks having different lengths relative to a bottom of the joint groove so that one of the groove flanks is a short groove flank and another is a long groove flank;
• the locking groove being formed by a rotating milling tool having a drive, a milling head and a support that transmits rotation from the drive to the milling head as well as a holder for the milling head;
• the milling head having a free radius at least on an end closer to the holder such that the free radius being located entirely between the long groove flank and the short groove flank that extended by a projection P in the direction parallel to the long groove flank so that at least a significant portion of the free radius being surrounded on both sides by the groove flanks during formation of the locking groove.

A method of forming a locking groove in a groove flank of a joint groove provided in a panel, that is part of a tongue-and-groove joint for connecting neighboring panels;

• the method comprising the steps of:
• providing the panel having a first face and a second face;
• forming the locking groove being provided in the part of the joint groove that is a surrounded on both sides by groove flanks;
• the groove flanks having different lengths relative to a bottom of the groove so that one of the groove flanks being a short groove flank and another being a long groove flank;
• the locking groove being formed by a rotating milling tool having a drive, a milling head, and a support transmitting rotation from the drive to the milling head as well as a holder for the milling head;
• the milling head having a free radius at least on an end closer to the holder such that the free radius being located entirely between the long groove flank and the short groove flank extended by a projection P in the direction parallel to the long groove flank during formation of the locking groove.

A method for using of a rotating milling tool for machining a locking groove in one of two groove flanks of a joint groove in a panel;

• the method comprising the steps of:
• providing the rotating milling tool having a drive, a milling head, and a support that transmits rotation from the drive to the milling head as well as a holder;
• providing the panel having a first face and a second face, with the locking groove being formed in the part of the joint groove surrounded on both sides by the groove flanks;
• an end of the milling head closer to the support having a free radius such that at least a significant portion of the free radius of the milling head being located in the part of the joint groove surrounded on both sides by the groove flanks during formation of the locking groove.