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Cutting insert, cutting tool, and cutting method using the cutting tool

A technology for cutting inserts and cutting tools, used in milling cutting inserts, manufacturing tools, milling cutters, etc., can solve the problem of chips colliding with each other, and achieve the effect of reducing cutting resistance and excellent chip discharge.

Active Publication Date: 2011-07-06
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned cutting insert, many chips that are finely cut in the width direction are generated during cutting, and there is a possibility that the chips may collide with each other.

Method used

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  • Cutting insert, cutting tool, and cutting method using the cutting tool
  • Cutting insert, cutting tool, and cutting method using the cutting tool
  • Cutting insert, cutting tool, and cutting method using the cutting tool

Examples

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no. 1 approach

[0023] Figure 1 to Figure 3 It is a figure which shows one embodiment of this invention.

[0024] The insert 1 has an upper surface 2 , a side surface 3 , and a cutting edge 4 provided at the intersection of the upper surface 2 and the side surface 3 . The upper surface 2 constitutes a substantially polygonal shape, specifically, a substantially quadrangular shape. Furthermore, the insert 1 has a rake region 21 extending inwardly from the cutting edge 4 on the upper surface 2 .

[0025] In this embodiment, the cutting edge 4 has a first cutting edge 41 , a second cutting edge 42 , and a third cutting edge 43 connected to the first cutting edge 41 and the second cutting edge 42 .

[0026] Such as figure 2 As shown in (a), the first cutting edge 41 is located at a first intersection portion where the upper surface 2 and the first side surface 3 intersect. That is, it is located on one side of the upper surface 2 constituting a substantially quadrangular shape. Furthermore...

no. 2 approach

[0082] Such as Figure 5 and Figure 6 As shown, the insert 1' of the present embodiment differs from the insert 1 of the first embodiment in the number of grooves 5 that cut off the first cutting edge 41. Specifically, the insert 1 has two grooves 5 that cut off the first cutting edge 41, whereas the insert 1' has three grooves 5 that cut off the first cutting edge 41. That is, in the insert 1', the first cutting edge 41 is truncated into four small cutting edges 411.

[0083] In this embodiment, the distance between the corner groove portion 5a closest to the third cutting edge 43 among the three groove portions 5 and the third cutting edge 43 is smaller than that of the insert 1 of the first embodiment. That is, the corner groove portion 5 a of the present embodiment is provided closer to the third cutting edge 43 than the corner groove portion 5 a of the first embodiment described above.

[0084] In addition, in the first embodiment, the two groove portions 5 including ...

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Abstract

A cutting insert provided with an upper surface, side surfaces, and cutting edges provided at portions at which the upper surface and the side surfaces intersect with each other. Each side surface has grooves reaching the upper surface so as to divide the cutting edge into small cutting edges. Projections are provided on the upper surface at positions to which the grooves extend.

Description

technical field [0001] The present invention relates to cutting inserts and the like. Background technique [0002] Conventionally, rotary cutting tools such as end mills and end mills, especially throw away rotary cutting tools in which cutting inserts are attached to tool holders, have been frequently used from the viewpoint of economical efficiency. [0003] A large load is applied to a hobbing tool with a long cutting edge during cutting, and therefore, a cutting insert with reduced cutting resistance applied during cutting is proposed. [0004] For example, Patent Document 1 discloses a cutting insert having a cutting edge located at an intersection between an upper surface and a side surface, and a groove provided on the side surface so as to divide the cutting edge. With the above structure, the chips are finely cut in the width direction, and the cutting resistance applied during cutting is reduced. [0005] However, in the cutting insert described above, a large n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/20B23C5/06B23C5/10
CPCB23C2200/081B23C2200/205B23C2200/128B23C5/202B23C2200/206B23C5/06Y10T407/23Y10T409/303752Y10T409/303808Y10T407/235Y10T407/1924Y10T407/1962
Inventor 石田琢也
Owner KYOCERA CORP
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