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Cutting insert and cutting tool, and cut workpiece manufacturing method using same

A technology for cutting inserts and cutting tools, which is applied in the direction of milling cutting blades, manufacturing tools, metal processing equipment, etc., can solve the problems of increased cutting resistance, and achieve the goals of reducing cutting resistance, good finishing surface, and improving chip discharge Effect

Active Publication Date: 2012-07-04
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the cutting insert is mounted in a holder, a region near the upper end 58 of the main cutting edge 50 may have a region where the axial rake angle becomes a negative value, and the cutting resistance becomes lower in this region. big subject

Method used

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  • Cutting insert and cutting tool, and cut workpiece manufacturing method using same
  • Cutting insert and cutting tool, and cut workpiece manufacturing method using same
  • Cutting insert and cutting tool, and cut workpiece manufacturing method using same

Examples

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no. 1 approach

[0029] Below, refer to Figure 1 to Figure 4 A first embodiment of the cutting insert (hereinafter, sometimes referred to as "insert") according to the present invention will be described in detail.

[0030] like figure 1 As shown, the insert 1 has a substantially polygonal plate-shaped body portion. The shape of the main body portion is not particularly limited as long as it is a shape commonly used in inserts by those skilled in the art, such as a triangle, a quadrangle, a pentagon, a hexagon, and an octagon in plan view. In the present embodiment, since the main body portion has a substantially pentagonal shape, as will be described later, it is easy to form minor cutting edges in addition to the major cutting edges, and there is an advantage that it is easy to secure a large mounting seat surface.

[0031] The body portion is preferably composed of, for example, a cemented carbide base body, a cermet base body, or the like. It is preferable to form a PVD film or a CVD f...

no. 2 approach

[0052] Second, refer to Figure 5 to Figure 8 A second embodiment of the insert according to the present invention will be described in detail. It should be noted that in Figure 5 to Figure 8 , to the same as the above Figure 1 to Figure 4 The same structural parts are assigned the same symbols and the description is omitted.

[0053] like Figure 5 As shown, the insert 11 of the present embodiment has a substantially polygonal plate-shaped body portion. In the present embodiment, as in the first embodiment, the main body portion has a substantially pentagonal shape having five long sides.

[0054] The main body has: a part of the upper surface 12 that functions as a so-called rake (face); a part of the lower surface 13 that functions as a mounting surface (mounting seat surface) with respect to the tool holder; and is continuous with the upper surface 12 and the lower surface 13 And a part has the side surface 14 which functions as a so-called flank. A cutting edge 15...

no. 3 approach

[0090] Second, refer to Figure 12 and Figure 13 A third embodiment of the cutting tool according to the present invention will be described in detail. It should be noted that in Figure 12 and Figure 13 , in the same Figure 9 to Figure 11 The same components are assigned the same symbols, and descriptions are omitted. like Figure 12 and Figure 13 As shown, the cutting tool 90 according to the present embodiment is a cutting tool in which a plurality of inserts 11 are attached to a holder 91 .

[0091] Specifically, similar to the tool holder 81 according to the first embodiment, a plurality of insert grooves 92 are formed in the outer peripheral front end portion of the tool holder 91 at intervals in the circumferential direction. In addition, the insert 11 is attached to the attachment surface 93 of each insert pocket 92 .

[0092] The insert 11 is attached to the tool holder 91 so that the upper surface 12 thereof faces the front side in the rotational directio...

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PUM

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Abstract

A cutting insert is provided with an upper surface, a lower surface, side surfaces, and cutting edges located respectively at the intersection lines between the upper surface and the side surfaces, and comprises a main cutting edge, a flat cutting edge, and an auxiliary cutting edge that is located between the main cutting edge and the flat cutting edge. In a side view, the cutting edge inclines upward with respect to a reference plane perpendicular to the center axis of the cutting insert, starting from the flat cutting edge toward the main cutting edge, until a top section is reached, whereupon the cutting edge inclines downward with respect to the reference plane, and the outer peripheral cutting edge angle of the auxiliary cutting edge is larger than the outer peripheral cutting edge angle of the main cutting edge. Provided are a cutting tool equipped with the cutting insert, and a cut workpiece manufacturing method using the cutting tool.

Description

technical field [0001] The present invention relates to a cutting insert, a cutting tool, and a method for producing a machined product using the cutting tool. Background technique [0002] As a cutting insert used for a face mill, an end mill, or the like, for example, Japanese Patent Publication No. 2010-523353 discloses a double-sided cutting insert having a major cutting edge 50 and a minor cutting edge 52 . [0003] However, if the cutting insert is mounted on the tool holder, a region in which the axial rake angle becomes negative may occur in the region near the upper end 58 of the main cutting edge 50, and the cutting resistance may become negative in this region. big subject. [0004] Here, there is a need for a cutting insert capable of reducing cutting resistance more than ever. SUMMARY OF THE INVENTION [0005] One of the objects of the present invention is to provide a cutting insert and a cutting tool which have both high cutting edge strength and low cutti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/06B23C3/00B23C5/20
CPCB23C5/202B23C2200/366B23C2200/0444B23C2200/208B23C5/06B23C2200/203Y10T407/2272Y10T407/235Y10T409/303808Y10T407/1924Y10T407/23
Inventor 徐永波
Owner KYOCERA CORP
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