Polygonal cutting bit

DETAILED DESCRIPTION What is claimed is: 1.
A cutting bit for cutting tools used for chip forming work, said bit comprising a polygonal cover face; cutting edges surrounding said cover face; and a plurality of chip forming elements arranged in rows, wherein each said row is spaced a distance from a respectively adjacent cutting edge, each said element has a base face which is joined to said cover face and a cross-section parallel to said base face which becomes smaller as the plane of the cross-section is moved away from said base face, and each said base face has three corners, one of said corners being oriented toward the internal region of said cover face while a line connecting the other two corners lies between the adjacent cutting edge and said one corner.
2.
Cutting bit as defined in claim 1 wherein said other corners of each said base face have the same distance from the adjacent cutting edge.
3.
Cutting bit as defined in claim 1 wherein said other corners of each said base face are disposed on a curved line.
4.
Cutting bit as defined in claim 1 wherein the base face of at least one said chip forming element is designed in the form of a triangle.
5.
Cutting bit as defined in claim 1 wherein the base face of at least one said chip forming element is defined by rounded concave lines which connect the corners of that base face.
6.
Cutting bit as defined in claim 1 wherein the corners of each said base face are rounded.
7.
Cutting bit as defined in claim 1 wherein said chip forming elements each have a planar surface at their end remote from said base surface.
8.
Cutting bit as defined in claim 7 where the planar surfaces of all said chip forming elements lie in a common plane.
9.
Cutting bit as defined in claim 8 wherein said cover face is designed in the form of a trough and the common plane defined by the ends of said chip forming elements is not higher than the plane defined by the cutting edges.
10.
Cutting bit as defined in claim 1 wherein said chip forming elements each have an end remote from its base surface which is rounded