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Multi-blade solid carbide drill

A solid carbide, drilling tool technology, used in drilling accessories, drilling/drilling equipment, tools for lathes, etc. Possibility, exclusion of sudden breakage, effect of shortening chip length

Inactive Publication Date: 2011-04-20
GUEHRING OHG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, however, it has been found that even solid carbide tools in the usual constructions are often unable to achieve the required durability, especially when it is necessary to use alternating layers of aluminum, fiber-reinforced or carbon fiber-reinforced plastic and titanium The required durability cannot be achieved in the case of processing relatively deep holes in the composite material of the layer

Method used

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  • Multi-blade solid carbide drill
  • Multi-blade solid carbide drill
  • Multi-blade solid carbide drill

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Embodiment Construction

[0027] The tool shown in the figures consists of solid carbide, preferably fine-grained carbide. Cemented carbide species of this type have been known for a long time, so a detailed description of the material can be omitted. It is decisive that the cemented carbide should have high toughness in the sintered state and should offer the possibility of forming stable and precise cutting edges due to the fine grain size.

[0028] Said tool is used in particular for cutting high-strength multilayer structural materials, and more particularly for drilling holes in solid bodies of such materials, which usually have layers comprising alternating layers of carbon fiber reinforced plastic, aluminum A composite structure of layers and titanium layers, wherein the sequence of the layers can vary depending on the purpose of application. When machining holes, especially deep holes whose depth is a multiple of the nominal diameter of the borehole to be produced, these layers require on the ...

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Abstract

The invention relates to a multi-blade solid carbide drill for cutting high-strength sandwich materials. The tool comprises a shaft section and an adjoining cutting part, into which a number of chip flutes that corresponds to the number of main blades is incorporated. In order to reinforce the curvature of the resulting chip, the chip flute of the drill comprises a chip flute rib in the region of the chip formation zone, said rib protruding from the chip flute surface and having a substantially wave-shaped cross-section (28), and said rib dividing the chip flute into two sections, a first chip flute section (30) forming the cutting rake and a second chip flute (32) forming the chip flute runout.

Description

technical field [0001] The invention relates to a preferably multi-edged solid carbide (VHM) drilling tool according to the preamble of claim 1 for cutting high-strength multilayer structural materials, in particular for cutting A hole is drilled in a solid body made of this material. Background technique [0002] In order to produce high-precision holes in multilayer structural materials composed of composite materials in which layers of material mainly composed of CFK and / or aluminum are arranged alternately with layers of titanium or layers containing titanium, it is necessary Particularly durable and stable knives, which must additionally be characterized in that the cutting edge is permanently capable of cutting composite materials with a good surface quality, while delamination of the composite layer should be prevented for the entire life of the tool. [0003] For this purpose, special knives have hitherto been developed, for example a knife as described in German Ut...

Claims

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Application Information

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IPC IPC(8): B23B51/02B24B19/04
CPCB23B2228/36B23B51/02B23P15/32B23B2251/406B24B19/04B23B2250/12Y10T408/78Y10T408/9097
Inventor I・冯普特卡默A・黑尔比希K・特劳纳
Owner GUEHRING OHG
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