BUILDING MATERIAL CUTTING DEVICE AND BUILDING MATERIAL PROCESSING SYSTEM

PROBLEM TO BE SOLVED: To provide a building material cutting device and a building material processing system that suppress generation of work loss in cutting building materials at a construction site. SOLUTION: A building material cutting device 16 for cutting a tabular building material S includes: fixing units 42， 44， 46 mounted to a device body 40 for fixing plural sides of the building material S; holders 48， 50 mounted to the fixing units 42， 44， 46 for gripping the sides so that the building material S can be cut; a pair of sockets 62 which are arranged on the same axis by facing both surfaces of the building material S， in order to be movable along the axis and the surface of the building material S， and rotatable about the axis; a cutting blade 54 which is fixed to each socket 62， and capable of cutting the building material S by cutting in from both surfaces of the building material S while leaving a part of a cut end surface; and control means 64 for controlling operation of the holders 48， 50 and the sockets 62 on the basis of predetermined cutting data. SELECTED DRAWING: Figure 2