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Indexable tangential cutting insert and rotary cutting tool

A technology of rotating cutting tools and cutting blades, which is applied in the direction of milling cutting blades, tools for lathes, milling cutters, etc., and can solve problems such as the diameter limitation of rotating cutting tools

Active Publication Date: 2011-06-15
ISCAR LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rotary cutting tools with indexable tangential cutting inserts, such as milling tools, may be limited in diameter due to the requirement to allow sufficient clearance between the cutting insert and the workpiece being machined by the rotating cutting tool

Method used

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  • Indexable tangential cutting insert and rotary cutting tool
  • Indexable tangential cutting insert and rotary cutting tool
  • Indexable tangential cutting insert and rotary cutting tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] figure 1 A top perspective view of a cutting insert 100 according to the invention is shown. The cutting insert 100 includes an insert body 102 having a top surface 110, a bottom surface 112, and peripheral sides extending between the top and bottom surfaces. The perimeter sides include a pair of secondary sides 114A, 114B connected to a pair of major sides 116A, 116B.

[0055] The cutting insert 100 is provided with an insert through hole 180 extending along a central axis A about which the cutting insert is 180° rotationally symmetrical. But the cutting insert is not reversible, because the top and bottom surfaces have different structures, so the insert cannot be turned upside down.

[0056] The cutting insert 100 also has a longitudinal axis L which: is perpendicular to the central axis A, passes through the pair of secondary sides 114A, 114B at a vertical position midway between the topmost and bottommost portions of the insert, and forms a plane with the central...

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PUM

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Abstract

An indexable tangential cutting insert (100) has a convex top surface (110), a bottom surface (112) provided with a cylindrical insert protrusion (136), and a peripheral side surface including a pair of opposing major side surfaces (116A, 116B ) and a pair of opposing minor side surfaces (114A, 114B). A sloped, major cutting edge (122) is formed at the intersection of each major side surface (116) with the top surface (110), the rake surface being formed in the major side surface (122). The bottom surface (112) is provided with an insert protrusion abutment surface (134) for seating the cutting insert (100). An insert recess (154) is formed in the cylindrical insert protrusion (136), and this recess (154) communicates with the insert's through bore (180). The cutting insert (100) is seated in an insert pocket (206) with the insert protrusion abutment surface (134) in abutment with the pocket base. A protrusion (284) rising from the pocket base and having a threaded bore (280) formed therein enters the recess (154) and is aligned with the insert's through bore (180).

Description

technical field [0001] The present invention relates to indexable tangential cutting inserts useful in small diameter rotary cutting tools. Background technique [0002] Rotary cutting tools, such as milling tools, having indexable tangential cutting inserts, such as milling tools, may be limited in diameter due to the requirement to allow sufficient clearance between the cutting insert and the workpiece machined by the rotating cutting tool. Thus, small diameter rotary cutting tools may have non-indexable rotating cutting inserts or they may be of the solid carbide tool type (ie a single piece solid carbide tool such as a solid carbide end mill). [0003] The object of the present invention is to provide an indexable and rotatable tangential cutting blade and a rotary cutting tool. [0004] This object is achieved with the subject-matter according to the respective claims. In particular, an indexable tangential cutting insert having a generally convex upper surface is pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/20
CPCB23C2200/123B23C2210/168B23C2200/083B23C2200/361B23C2200/367B23C5/207Y10T407/1924Y10T407/23Y10T407/1936B23C5/202B23C2200/284B23C5/205
Inventor A·萨特兰O·阿塔尔
Owner ISCAR LTD