Polycrystalline diamond compact with gradient outer ring inclined plane

According to the polycrystalline diamond compact with the gradually-changed outer ring inclined plane, the original equal-width chamfer form surrounding a circle is changed into the gradually-changed outer ring inclined plane, according to the actual working condition of the compact, the middle of the compact is wide, the wide part of the middle is located in the feeding direction of a drill bit or a tool after installation, the borne cutting amount is large, larger resistance can be resisted, and the service life of the compact is prolonged. The width of the inclined plane is gradually reduced, the cracking probability of the part is reduced, the cutting amount borne by the areas on the two sides is smaller when the area is closer to the installation part, and therefore the width of the inclined plane is gradually reduced to be zero, the working amount of chamfering inclined plane machining is placed at the useful position through the structural form, and invalid chamfering machining is avoided. 一种渐变外环斜面的聚晶金