| 摘要 |
A double-sided, nonagon cutting insert includes a top surface, a bottom surface identical to the top surface, nine side surfaces that are identical to each other, a cutting edge formed at an intersection between each of the nine side surfaces and the top and bottom surfaces for a total of eighteen cutting edges, and nine corner radiuses identical to each other, each corner radius extending between the top and bottom surfaces and each of the nine side surfaces. Each cutting edge has a non-symmetric profile with respect to a central, longitudinal axis. The non-symmetrical profile of the cutting edge has the technical advantage of providing a variable cutting force, particularly during fine finishing cutting operations. |
| 主权项 |
1. A double-sided, nonagon cutting insert, comprising:
a top surface; a bottom surface identical to the top surface; nine side surfaces that are identical to each other; a cutting edge formed at an intersection between each of the nine side surfaces and the top and bottom surfaces for a total of eighteen cutting edges; and nine corner radiuses identical to each other, each corner radius extending between the top and bottom surfaces and each of the nine side surfaces, wherein each cutting edge has a non-symmetric profile with respect to a central, longitudinal axis of the cutting insert, and wherein each cutting edge has a length, CL, that extends from one of the corner radiuses to an adjacent corner radius, and wherein the cutting edge starts at a point, B, and tapers downward to a point, C, for a distance equal to 0.10 to 0.20 times the length, CL, of the cutting edge, and wherein the cutting edge tapers downward from the point, C, to a point, D, for a distance equal to 0.45 to 0.60 times the length, CL, of the cutting edge to a maximum drop of the cutting edge. |
