A tool, a cutting insert, a shim and use of the cutting insert

A technology for cutting blades and cutting tools, which is applied in the direction of cutting blades, accessories of toolholders, and tools used in lathes, etc., and can solve problems such as static instability of support points

Inactive Publication Date: 2006-04-19
SECO TOOLS AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of said protrusions is the same as the number of corners of the cutting insert, which means, for example, that

Method used

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  • A tool, a cutting insert, a shim and use of the cutting insert
  • A tool, a cutting insert, a shim and use of the cutting insert
  • A tool, a cutting insert, a shim and use of the cutting insert

Examples

Experimental program
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Embodiment Construction

[0016] The tool 10 shown in FIGS. 1A and 1B comprises a tool holder 11 for turning or milling, a spacer 12 and an indexable cutting insert 13 made of cemented carbide. The cutting insert 13 and the spacer comprise through holes so that they can be firmly fixed against the tool holder in a conventional manner by means of screws not shown here. Alternatively, conventional clamps can also be used.

[0017] The knife holder 11 may be a square knife handle, and has a recess for mounting a spacer. The recess comprises at least two raised shoulders against which the edge surface of the cutting insert can abut.

[0018] The spacer 12 has a substantially rhomboid basic shape with an imaginary major axis CL1 and an imaginary minor axis CL2. Here "rhomboid" means an oblique equilateral parallelogram. The axes or diagonals are perpendicular to each other. The major axis corresponds to the angle bisector of acute corners in a rhombus, while the minor axis corresponds to the angle bisec...

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PUM

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Abstract

The present invention relates to a tool (10), a cutting insert (13) and a shim (12) for cutting machining. The tool comprises a holder for turning or milling, a shim (12) and an indexable cutting insert (13). The shim has an upper side and the cutting insert has a lower side. The lower side comprises protrusions (29A,29B). The cutting insert and the shim are provided to abut against each other in three points. The upper side of the shim comprises recesses (21,22). The recesses (21,22) are provided spaced from the projections (29A,29B).

Description

technical field [0001] The invention relates to a cutting tool, a cutting insert, a shim and the application of the cutting insert in chip removal processing. Background technique [0002] It is difficult to manufacture direct pressed hard metal cutting inserts with completely flat undersides or support surfaces. This is due to the fact that the shape change during sintering is difficult to predict as it depends on many factors such as the manufacture of the die, pressing parameters, powder material, powder preparation, and furnace parameters. With a convex underside, the end of the cutting insert lifts from the support surface in the tool holder and thus creates vibration problems. However, if the lower surface is formed into a concave shape, when mounting with screws or clamps, high tension will be generated on the lower surface, which hard metals generally cannot bear. [0003] One known cutting insert is provided with protrusions at the corners of the support surface. ...

Claims

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Application Information

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IPC IPC(8): B23B27/00B23B29/04B23B29/22B23C5/00B23Q3/18B23BB23B27/16B23C5/22
CPCB23C2210/166B23B2205/16B23B27/1611B23B2200/163B23C5/2221B23B2200/161Y10T407/1932Y10T407/227Y10T407/23Y10T407/1906Y10T407/2272Y10T409/303752B23C5/2213
Inventor 克里斯特·艾德克林特
Owner SECO TOOLS AB
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