Cutting or sawing machine

A cutting or sawing machine of the type which comprises a machine body including a power source, a tool assembly including two disc shaped, rotational cutter blades, one on each side of an elongated tool carrier having a rear end which is connected to the machine body and a front end in which the cutter blades are rotationally mounted, and a power transmission for rotation of the cutter blades, the edge portions of which form the working parts of the cutter blades, said edge portions having inner sides which face one another and outer sides which define planes which form the limits of the, in the axial directions, maximally projecting parts of the tool assembly as well as of at least a major part of the tool carrier, allowing the complete tool assembly and said at least major part of the tool carrier to be entered into a groove established in a working object after removal of material between the two parallel kerfs made by the two rotational cutter blades, characterized in that it is provided with at least one of a first type blade guard and a second type blade guard,

• wherein the first type blade guard is a blade guard which is mounted on the tool carrier, adjacent to the tool assembly and has a width, which is smaller than the distance between said second, outer sides of the edge portions of the cutter blades and hence also smaller than the width of said groove, allowing the first type blade guard to be entered into said groove, and
• wherein the second type blade guard is a blade guard which is pivotally mounted to the tool carrier and turnable about a turning center adjacent to the rear end of the tool carrier and has a width which is larger than said distance between said second, outer sides of the edge portions of the cutter blades, preventing the blade guard of said second blade guard type from entering said groove but allowing a tip portion of it to slide against the outer surface of the working object when the tool assembly has entered the working object to a certain depth, turning said second type blade guard rearwards in a hinge.

A machine comprising a machine body, at least one disc shaped, rotatable tool, at least one rotatable driving member having a center of rotation which is coaxial with the tool, an elongated tool carrier having the substantial shape of a flat bar having a front end and a rear end, two opposite broad sides and two opposite edge sides, said rear end being connected to the machine body, said at least one tool being rotatably mounted in said front end, and a power transmission for rotation of the tool via said driving member, the tool carrier comprises at least two elongated side walls, a first elongated side wall on one broad side of the tool carrier, a second elongated side wall on the opposite broad side, said first and second side walls being essentially parallel with each other, the front part of one of the side walls is provided with a bearing hole intended to carry one of a sliding contact bearing or a rolling contact bearing, and the two side walls connected to each other at a plurality of sites, and each side wall has a length adapted to essentially cover at least the gap between the machine body and the perimeter of its associated disc shaped tool, so that each broad side of the side walls and the associated disc shaped tool together cover the power transmission, and at least two blade guards wherein at least one of the at least two blade guards is coupled to at least one of the side walls.