B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
143/28
B27B 9/02 (2006.01) B23D 59/00 (2006.01) B23Q 9/00 (2006.01) B27G 19/10 (2006.01)
Patent
CA 2034591
TITLE OF THE INVENTION METHOD AND APPARATUS FOR CUTTING A WORK PIECE HAVING A SURFACE COATING ABSTRACT OF THE DISCLOSURE Flat multi-layered work pieces, such as panels with a decora- tive or finish surface coating, are prescored and cut through by the same saw blade to avoid damage to the surface coating. For this purpose a circular saw is guided along a guide rail and its saw blade is adjustable to a prescoring depth and to at least one lateral prescoring position to make a first pre- scoring cut only through the cover layer in a sawing direc- tion in synchronism with the blade rotation direction. If necessary, the blade is adjusted to a second lateral prescor- ing position to make a second prescoring cut only through the cover layer in a cutting direction in synchronism with the blade rotation. Finally, the saw blade is adjusted to its full cutting depth and to a lateral position between the two prescoring positions and a full cut is made through the entire work piece in a sawing direction counter to the rota- tion direction of the saw blade. A circular saw for carrying out the foregoing method has a single saw blade, stop ele- ments, and adjustment mechanisms for adjusting the single saw blade into the various necessary positions. The prescor- ing avoids damage to the surface coating even if it is brittle. 2562/ar -1-
Kuhn Reiner
Weingart Michael
Gowling Lafleur Henderson Llp
Kuhn Reiner
Weingart Michael
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