Punching tool

A technology for drilling tools and drill bits, which can be used in drilling accessories, manufacturing tools, stone processing tools, etc. It can solve problems such as hole blockage, reduce load, reduce the risk of drill loosening, and reduce production costs.

Inactive Publication Date: 2008-01-30
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, multiple suction actions are no longer sufficient to quickly and sufficiently extract the cuttings, and the holes may become clogged

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0030] FIG. 1 shows a drilling tool designed according to the invention, generally designated by the symbol 1, which has been inserted into a tool holder R of a drilling machine M, such as a percussion drilling machine. The drilling tool 1 has a sleeve-shaped shaft 2 with a through hole 3 . The sleeve-shaped rod 2 is connected at one end to a connection part 4, which has a plug-in end 5 for connection in a tool receptacle R of a drilling machine M, for example by soldering. The through hole 3 communicates with a hole 6 in the connection part 4 which opens into a hole 7 at the periphery of the connection part 4 . In the axial extension of the tool mount R, a torsion-transmitting joint C is provided on the drill M, which is equipped with an annular cavity S, which communicates with the outlet hole 7 of the hole 6 in the connection part 4 . The annulus S opens into a connection N, to which the suction hose H is connected. At the end of the sleeve-like rod 2 opposite the connect...

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PUM

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Abstract

The invention relates to a drill tool for making a drill hole in a rock, a concrete, a wall material, etc, is provided with a hollow shaft (12) and a penetrated hole extending in the shaft direction communicates with opening parts (14) in both end regions in this shaft. In the shaft (12), the back end part is formed as a mounting end part for connecting with a drilling device and a drill head (15) supporting a cutter (16) and made of a hard material is supported on the front end part. The drill head is hooked on at least one slit extending approximately in the radial direction. The region of the drill head (15) embedded in the shaft (12) is strongly bonded with the shaft material under face contact over majority of the outer periphery.

Description

technical field [0001] The present invention relates to a drilling tool for making boreholes in rock, concrete or brick masonry. Background technique [0002] In addition to known drilling tools for making boreholes in rock, concrete, brickwork, etc., wherein the cuttings are cut by means of at least one helically extending drill The flutes are output from the drilled hole, and some so-called suction drills have also been proposed in the past. They consist of a drilling tool equipped with an axial bore, which is connected via an adapter and a connecting part to a vacuum-generating device, in particular a vacuum cleaner or the like. Suction drills should lead to increased drilling efficiency and better hole cleaning by sucking out drill cuttings produced during operation. A suction drill of this type is described, for example, in DE-A-2756140. This known suction drill has a rod formed with an axial suction hole, one end of which is housed in an adapter which is surrounded ...

Claims

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Application Information

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IPC IPC(8): B28D1/14E21B10/46B23B27/14B23B51/00E21B10/38E21B21/16
CPCE21B10/38E21B21/16B23B27/146B23B2251/68
Inventor 卡雷纳·韦尔纳邦格斯-艾姆布罗修斯·汉斯-维尔纳
Owner HILTI AG
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