Abstract: A ceramic cutting insert for high speed machining of materials is provided having an integral chip control surface thereon.

Abstract: A ceramic cutting insert for high speed machining of materials is provided having an integral chip control surface thereon.

Abstract: An indexable cutting insert is shown capable of cutting operations over a wide range of parameters such as depth of cut or feed rate. The insert has different geometries at certain locations on the cutting surface such that under differing parameters a desirable cutting surface will be in contact with the workpiece.

Abstract: An indexable cutting insert is shown capable of cutting operations over a wide range of parameters such as depth of cut or feed rate. The insert has different geometries at certain locations on the cutting surface such that under differing parameters a desirable cutting surface will be in contact with the workpiece.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having peripheral end wall regions, sides and first and second walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and is adaptable for engagement by a toolholder assembly. A land region extends rearwardly from the end wall region and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: A cutting insert having a generally polygonal insert body having a top face, a bottom face and a plurality of side walls extending therebetween. The juncture of each side wall with the top face defines a peripheral cutting edge. A chip breaking groove is formed in the top face and extends alongside the cutting edges. The chip breaking groove includes a descending wall which inclines downwardly from the cutting edges and a back wall which inclines upwardly from the rearward edge of the outside wall. The back wall includes a nose portion adjacent the cutting corner of the insert. The nose portion includes a tip and a pair of side edges which are disposed at an angle relative to the adjacent cutting edges of the insert body such that the width of the chip groove increases as it extends away from the cutting corner.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having peripheral end wall regions, sides and first and second walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and is adaptable for engagement by a toolholder assembly. A land region extends rearwardly from the end wall region and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: An improved on-edge cutting insert with chip control features and a method for manufacturing the same. An insert body having peripheral end wall regions, sides and first and second walls has cutting edges and is adapted for mounting in a pocket of a toolholder assembly. A land region extends rearwardly from the end wall region and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after my selective removal thereof represents no more than approximately one-third of the total eidth of the end wall region.

Abstract: An improved cutting insert for threading applications has chip control features and includes an insert body having end wall regions, sides and top and bottom walls adapted for mounting in a pocket in a holder. The insert body has cutting edges and a notch in the top and bottom sides. The end wall regions each comprise two end walls converging toward one another as they extend from the insert's sides, forming at the juncture with the respective top and bottom walls, a cutting edge. The chip control geometry including a recess defining, when viewed in plan, a generally "V" shaped depression having the bottom of the "V" proximate the tip of the cutting edge. The extending arms of the "V" are distal the cutting edge tip and are crowned by a pair of backramps.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having wall regions, sides and top and bottom walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and a diagonal notch in the top and bottom sides. A land region extends rearwardly from the end wall region toward the respective top or bottom wall and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: An improved cutting insert with chip control features having an insert body having wall regions, sides and top and bottom walls adapted for mounting in a pocket in a holder. The insert body has cutting edges and a diagonal notch or the like in the top and bottom sides. A land region extends rearwardly from the end wall region toward the respective top or bottom wall and defines a surface region of a predetermined width. An ascending wall or back ramp initiates in a portion of the land and terminates at the respective top or bottom wall. A chipbreaker depression initiates in a forward portion of the land proximate the cutting edge and extends into and bisects the back ramp.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having wall regions, sides and top and bottom walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and a diagonal notch in the top and bottom sides. A land region extends rearwardly from the end wall region toward the respective top or bottom wall and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.