公开(公告)号：US20200206824A1

公开(公告)日：2020-07-02

申请号：US16728850

申请日：2019-12-27

Applicant: TUNGALOY CORPORATION

Inventor： Yuusuke SUZUKI

IPC: B23B27/04

Abstract: The present invention provides a cutting insert that exhibits superior chip control during both grooving and cross feeding. The cutting insert includes an upper face, a front face that forms an intersecting ridgeline with the upper face, side faces that are connected to the front face and form intersecting ridgelines with the upper face, a front face cutting edge provided on the intersecting ridgeline between the upper face and the front face, and side cutting edges provided on the intersecting ridgelines between the upper face and the side faces. The upper face includes a first upper face portion and an undulating upper face portion on which peaks and troughs are formed continuously in a direction heading away from the front face cutting edge, the undulating upper face portion being provided on both lateral direction sides of the first upper face portion. The undulating upper face portion is configured such that the side cutting edges, when seen from the side, each have a continuous undulating shape from the front face cutting edge.

公开(公告)号：US20190283142A1

公开(公告)日：2019-09-19

申请号：US16353826

申请日：2019-03-14

Applicant: TUNGALOY CORPORATION

Inventor： Yuusuke SUZUKI ,  Katsura MOCHIZUKI

IPC: B23B27/14 ,  B23B27/16 ,  B23B51/04

Abstract: There is provided a cutting insert used for both drilling and turning. The cutting insert includes an insert main body having a front surface and a rear surface, the outline shapes of which are parallelogram shapes, peripheral side surfaces disposed on four sides of the insert main body, cutting edges provided on respective intersecting ridge lines between the front surface and the peripheral side surface and between the rear surface and the peripheral side surface of the insert main body, and a hole provided in the insert main body to incline with respect to the front surface and the rear surface, the hole being usable for attachment.