摘要:
A cutting insert for chip forming machining comprises an upper rake face, a lower face, and an edge clearance face interconnecting said upper and lower faces. The edge clearance face includes a step located intermediate the upper and lower faces. The step defines a fracture zone so that in the event of insert breakage, the location of the breakage can be controlled. The portion of the insert located below the step defines, in effect, an integral shim.
摘要:
A cutting insert includes a first mounting surface, a second mounting surface located on an opposite side of the insert from the first mounting surface, and a first side surface disposed between the first mounting surface and the second mounting surface. The insert further includes a first groove extending substantially diagonally across the first side surface and dividing the first side surface into discrete, separated, triangular first and second first side support surfaces. The first and second first side support surfaces are each bounded along first and second edges thereof by rake surfaces forming non-zero angles with the first and second side support surfaces and along third edges thereof by the groove.
摘要:
A circular cutting insert includes a top surface having a top edge portion, a side surface having a clearance surface and a clearance edge portion. A cutting edge is formed between the clearance edge portion and the top edge portion. The clearance edge portion and the top edge portion form a wedge angle. The wedge angle varies as a function of circumferential position about a central axis of the insert relative to a point on the cutting edge.
摘要:
A toolholder for holding a plurality of types of removable cutting inserts is provided. The toolholder includes a toolholder body having an insert-receiving recess. The recess includes an insert abutment surface for abutting a corresponding insert supporting surface of an insert. The insert abutment surface includes a first portion that abuts a first insert supporting surface of a first type of cutting insert and a second portion abuts a second insert supporting surface of a second type of cutting insert.
摘要:
A cutting insert includes a first mounting surface, a second mounting surface located on an opposite side of the insert from the first mounting surface, and a first side surface disposed between the first mounting surface and the second mounting surface. The insert further includes a first groove extending substantially diagonally across the first side surface and dividing the first side surface into discrete, separated, triangular first and second first side support surfaces. The first and second first side support surfaces are each bounded along first and second edges thereof by rake surfaces forming non-zero angles with the first and second side support surfaces and along third edges thereof by the groove.
摘要:
The present invention relates to an indexable cutting insert for an end mill for machining of contours in a workpiece and to a milling tool. The cutting insert is asymmetrical in respect of a line through a hole in the cutting insert. The cutting insert includes two cutting edge portions. Each cutting edge portion comprises of a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a chip surface. The curved cutting edges have different lengths. The cutting insert includes recesses in a bottom side of the cutting insert. The recesses are arranged on both sides of and at different distances from the hole of the cutting insert.
摘要:
The present invention relates to an indexable cutting insert for an end mill for machining of contours in a workpiece and to a milling tool. The cutting insert is asymmetrical in respect of a line through a hole in the cutting insert. The cutting insert comprises two cutting edge portions. Each cutting edge portion comprises a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a rake face. The curved cutting edges have different lengths. The cutting insert has a bottom side and a first and a second opposite corner. The second corner is defined in plane view by a radius that is greater than, preferably at least twice as great as a radius of the first corner.