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Cutting inserts, bodies and cutting tools

A technology of cutting blade and main body, which is applied in the field of cutting tools and cutting blades of rotary tools, and can solve problems such as fatigue damage

Active Publication Date: 2018-12-04
TUNGALOY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to rapid changes in the temperature of the tool tip due to heating or cooling, the active corner cutting edge repeatedly expands and contracts, so it is also prone to fatigue damage

Method used

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  • Cutting inserts, bodies and cutting tools
  • Cutting inserts, bodies and cutting tools
  • Cutting inserts, bodies and cutting tools

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Hereinafter, a cutting insert and a cutting tool according to an embodiment of the present invention will be described with reference to the drawings.

[0030] based on Figure 1 to Figure 6 The cutting insert 1 according to the embodiment will be described. The cutting insert 1 has two opposing end surfaces 11, 21, peripheral side surfaces (hereinafter referred to as side surfaces) 31 extending between these end surfaces, and a plurality of cutting edges 11E, 21E extending at intersecting ridges between the end surfaces and the side surfaces. . Such as image 3 As shown, the shape of the first end surface 11 of the two end surfaces of the cutting insert 1 is a shape having eight corners and eight edge portions connecting adjacent corners to each other, and is a shape that can be approximated to an octagon. . The second end surface 21 of the two end surfaces has the same shape as the first end surface 11 . The first end surface 11 and the second end surface 21 are ...

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PUM

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Abstract

The present invention provides a cutting insert, the cutting insert has a first end face (11), a second end face (21), a side face (31), at least one cutting edge (11E), the second end face (21) and the first The end faces (11) face each other, the side face (31) connects the first end face and the second end face, and the at least one cutting edge (11E) extends at a crossing ridge between the first end face and the side face. The cutting edge includes a corner cutting edge (41) extending at a corner (11C) of the first end face and a main cutting edge (41a) connected to the corner cutting edge. In the first end face, the rake face formed along the cutting edge inclines toward the second end face side as it moves away from the cutting edge. When the cutting insert is viewed from the side, the main cutting edge has an inclined portion inclined in a direction in which the corner cutting edge approaches the second end surface. The portion along the rake face of the inclined portion is formed such that, in the direction along the intersecting ridgeline between the first end face and the side surface, the angle of inclination toward the second end face becomes larger as the position approaches the corner.

Description

technical field [0001] The present invention relates to cutting inserts used in cutting tools, in particular cutting inserts used in rotary tools. Furthermore, the present invention relates to a detachably attached body of the cutting insert and a cutting tool including these components. Background technique [0002] Conventionally, as a cutting insert for a rotary cutter, for example, there is a cutting insert disclosed in Patent Document 1. The cutting insert of Patent Document 1 includes two opposing end surfaces, a peripheral side surface extending between these end surfaces, and a plurality of cutting edges extending at intersecting ridges between each of the two end surfaces and the peripheral side surface. Each cutting edge has a corner cutting edge extending at a corner of the associated end face, a main cutting edge extending from the corner cutting edge to an adjacent corner, and a corner cutting edge extending from the side opposite to the main cutting edge of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/20B23C5/06
CPCB23C2200/286B23C2200/205B23C2200/208B23C2200/366B23C2210/168B23C5/06B23C2200/085B23C2200/125B23C5/202B23C5/20B23C5/109
Inventor 松村崇弘吉田悟
Owner TUNGALOY CORP