Granulator blade

1. A granulator assembly, the granulator assembly having a frame, a rotor, input hopper, and an output bin, the rotor having a diameter and an axis of rotation, the granulator assembly further comprising:

a bed blade on the frame, the bed blade between the input hopper and the output bin;

a rotor blade mounted on the rotor, the rotor blade adapted to interface with the bed blade at a force angle of attack, the rotor blade further comprising a blade holder attached to a removable cutting blade, the removable cutting blade comprising a cutting edge, and a mounting surface, the mounting surface further comprising a first mounting side and a second mounting side the blade holder having an inside surface on the rotor and an outside surface; and

a V-shaped saddle on the blade holder, the V-shaped saddle comprising a first saddle side and a second saddle side, the second saddle side adapted to engage and bear against the first mounting side, the second saddle side further adapted to be approximately perpendicular to the force angle of attack.

2. The invention of claim 1 , further comprising a blade fastener in the blade holder, material removed from the blade to form a carrier hole, the carrier hole adapted to fixedly engage the blade fastener.

3. The invention of claim 1 , wherein blade holder further comprises an outside surface, an inside surface and a back edge, the back edge is spaced from the V-shaped saddle, the outside surface spaced from the inside surface, a plurality of mounting holes extending from the outside surface to the inside surface.

4. The invention of claim 3 , further comprising a blade hole formed by material removed from the blade holder, the blade hole extending from the back edge to the V-shaped saddle.

5. The invention of claim 4 , further-comprising a blade fastener in the blade holder, material removed from the blade to form a carrier hole, the carrier hole adapted to fixedly engage the blade fastener.

6. The invention of claim 1 , wherein the V-shaped saddle further comprises an inner edge, an inner edge disposed between the inside surface and the outside surface.

7. The invention of claim 6 , further comprising a blade axis in the rotor blade, the inner edge disposed on the blade axis, the cutting edge formed on an edge axis, the edge axis spaced from the blade axis.

8. The invention of claim 7 , wherein the edge axis is intermediate the blade axis and the inside.

9. The invention of claim 1 , wherein the force angle of attack is approximately perpendicular to one of the first saddle side or the second saddle side.

10. A granulator assembly, the granulator assembly having a frame, a rotor, an input hopper, and an output bin, the rotor having a diameter and an axis of rotation, the granulator assembly further comprising:

a two piece bed blade, the bed blade having a bed blade holder attached to the frame and a removable bed cutting blade;

a blade holder on the rotor, the blade holder comprising an inside surface, an outside surface, a front edge and a back edge, the front edge further comprising a V-shaped saddle having a first saddle side and a second saddle side disposed at a saddle angle to each other, the first saddle side and the second saddle side joined at an inner edge the inner edge generally parallel to the axis of rotation of the rotor, the first saddle side extending from the inner edge at an orientation generally aligned with the diameter of the rotor;

a removable cutting blade on the blade holder, the removable blade comprising a cutting edge, a mounting surface, a pair of blade sides, material removed to form a carrier hole, the carrier hole in the mounting surface, the cutting edge disposed to interface with the two piece bed blade.

11. The invention of claim 10 , wherein the cutting edge is disposed at an edge axis, the edge axis extending from the mounting surface to the cutting edge, the edge axis disposed in a position not equidistant from each of the pair of blade sides, the cutting edge disposed to direct a cutting force between bed blade and the removable cutting blade approximately perpendicular to first saddle side.

12. The invention of claim 11 , further comprising a blade hole formed in the blade holder, the blade hole extending from the back edge to the inner edge.

13. The invention of claim 11 wherein the cutting blade further comprises a blade axis in the rotary cutting blade, the blade axis extending from the back edge of the blade holder through the inner edge, the blade axis approximately equidistance between the inside surface and the outside surface, the blade axis spaced from the edge axis whereby the removable blade interfaces with the fixed bed blade with a cutting force oriented approximately tangential to the diameter of the rotor.

14. The invention of claim 13 , wherein the cutting force is directed at a force angle of attack approximately perpendicular to the first saddle side.

15. The invention of claim 13 wherein the blade holder further comprises a plurality of blade holes formed by material removed from the back edge to the V-shaped saddle and a plurality of mounting holes formed by material removed from the inside surface to the outside surface and further comprising a blade fastener in each blade hole threadably engaging the removable cutting blade and a threaded fastener in each mounting hole for attaching the blade holder to the rotor.

16. The invention of claim 15 , wherein the mounting hole further comprises a recess on the outside.

17. A granulator assembly, the granulator assembly having a frame, a rotor, an input hopper, and an output bin, the rotor between the input hopper and the output bin, a plastic piece in the input hopper, the rotor further having a diameter and an axis of rotation, the rotor axially attached to the granulator, the rotor rotating about the rotor axis, the granulator assembly further comprising:

a two piece rotor blade comprising a blade holder and a removable cutting blade, the blade holder attached to the rotor, the blade holder having a back edge, a front edge, an inside surface and an outside surface, a V-shaped saddle on the front edge, the V-shaped saddle comprising material removed from the front edge to form an indention in the front edge comprising a first saddle side and a second saddle side, the first saddle side joined to the second saddle side at an inner edge, the first saddle side disposed at a saddle angle with respect to the second saddle side, the first saddle side further radially aligned with the diameter of the rotor, material removed from the outside surface to form a mounting hole extending through to the inside surface, and material removed from the back edge to form a blade hole extending to the V-shaped saddle, the removable blade on the blade holder, the removable blade having a cutting blade axis, a mounting surface and a cutting edge, the mounting surface adapted to fit in the V-shaped saddle, the cutting edge offset from the cutting blade axis and spaced from the blade holder whereby the cutting edge engages the plastic piece with a cutting force directed approximately perpendicular to first saddle side; and

a bed blade, the bed blade comprising a blade holder on the frame and a removable blade attached to the blade holder, whereby the removable blade may be replaced without taking the blade holder off the frame.