Milling cutting element system

A cutting system comprising:

• a bit holder comprising a cutting tool holder portion extending away from a mounting portion, the bit holder having a leading edge, a lagging edge opposite the leading edge, an upper surface, a lower surface opposite the upper surface, and a pair of lateral surfaces together defining an outer surface of the bit holder;
• a milling platform having a circumferential outer surface and being rotatable about an axis, the milling platform including opposing lateral surfaces extending radially outward away from the axis to the circumferential outer surface, the milling platform formed to include a plurality of recessed mounting surfaces sequentially formed in the circumferential outer surface, each of the recessed mounting surfaces defined by a leading recess edge interconnected by a bottom mating surface with a lagging recessed edge, the bottom mating surface extending to the opposing lateral surfaces, wherein the leading recess edge, the lagging recessed edge, and the bottom mating surface are planar surfaces;
• the bit holder positioned in a corresponding recessed mounting surface to align the leading and lagging edges of the bit holder with respective leading and lagging recessed edges of the corresponding recessed mounting surface such that the pair of lateral surfaces of the bit holder are exposed to allow access to the pair of lateral surfaces of the bit holder, wherein a width between the pair of lateral surfaces of the bit holder is substantially equal to a width between the opposing lateral surfaces of the milling platform;
• and
• a fastener and a pin each engaged with corresponding openings in the bit holder and the bottom mating surface to maintain the bit holder in the corresponding recessed mounting surface.

A cutting system, comprising:

• a milling platform rotatable about an axis, the milling platform including a circumferential outer surface defined about the axis, opposing lateral surfaces extending radially outward away from the axis to the circumferential outer surface, and a mating surface, the mating surface being a recess in the circumferential outer surface extending to the opposing lateral surfaces and a predetermined distance toward the axis to define a leading recess edge and a lagging recess edge in the milling platform;
• a fastener base opening and a pin base opening formed in the milling platform within the recess, the fastener base opening being closer to the leading recess edge than the pin base opening;
• and
• a bit holder including a cutter bit, the bit holder having a radially inward facing surface positioned in the recess to engage the corresponding mating surface of the milling platform, the radially inward facing surface including a fastener bit holder opening in alignment with the corresponding fastener base opening of the milling platform to receive a fastener, and a pin bit holder opening in alignment with the corresponding pin base opening of the milling platform to receive a pin, wherein the fastener and the pin removably couple the bit holder to the milling platform such that the bit holder extends between the opposing lateral surfaces within the recess,
• wherein the milling platform is a first milling platform, the system further comprising a second milling platform,
• wherein each of the first and second milling platforms includes a plurality of positioning apertures formed therein extending laterally therethrough, the positioning apertures disposed between the outer surface and the central aperture,
• wherein the positioning apertures includes a plurality of first positioning apertures alternating with a plurality of second positioning apertures, wherein aperture centers of the first and second positioning apertures each are spaced from the axis in order to define a circular pattern about the axis.