Drill bit of compound piece of wedge PDC

The utility model discloses a drill bit of compound piece of wedge PDC, including drill bit body, a plurality of wing, a plurality of compound piece body, the wing distributes uniformly on the drill bit body, and compound piece body lies in the wing, and compound piece body be the cylinder shape, and the both sides of compound piece body all are equipped with the inclined plane, the terminal surface formation linear interpolation blade of inclined plane and compound piece body, the cutting blade of compound piece body still includes arc cutting blade, and arc cutting blade lies in between twolinear interpolation blades. The utility model discloses a compound piece of PDC that sets up on the drill bit, when cutting the rock stratum, the linear interpolation blade that sets up easily cuts stereoplasm rock stratum or mud drum stratum, and the arc that sets up cutting blade has increased the width of compound piece cutting blade, the efficiency of cutting to the rock stratum is improved,compare traditional utiliz