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
CN1759966AInactive Publication Date: 2006-04-19SECO TOOLS AB
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SECO TOOLS AB
Publication Date
2006-04-19
Estimated Expiration
Not applicable · inactive patent

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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).
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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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