Tool for machining stone or concrete floors

Abstract

The invention relates to a machine and at least one tool (10) for machining floor and road surfaces. The tool comprises at least one rotatably mounted disc (20) driven during use, which disc (20) comprises at least one machining element (30) being attached at one end (30a) to the disc. The machining element has a free end (30b) with a symmetrically blunt shape, so that the disc can be driven in different directions with the same machining element in a plane essentially in parallel with the plane of the disc.

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates to a tool for machining stone or concrete floors, comprising at least one rotatably mounted disc driven during use, which disc carries at least one machining element.DESCRIPTION OF RELATED ART[0002]Today, tools for machining stone or concrete floors, i.e. primarily grinding and polishing but also cutting, milling or crushing floor surfaces and / or cleaning these surfaces by removing coatings on them with the object of producing plane, clean and / or smooth floor surfaces commonly use a machining appliance which carries one or more rotatably mounted discs that in turn carries one or more machining elements. This machining element or cutter / bit contacts the floor surface while performing a movement in a plane in parallel to the rotating disc, so that a machining of the floor surface is produced.[0003]An exemplary tool for such machining of floor surfaces is disclosed in SE-C2-525 802.[0004]A disadvantage of known tools f...

AI Technical Summary

Benefits of technology

[0005]An object of the invention is therefore to provide an improved machining tool, which eliminates or at least reduces the disadvantages for prior art machining tools.

[0016]Providing the machining element in a tool for machining floors and road surfaces with a free machining end having a symmetrically blunt shape, i.e. with no sharp edge / -s in any direction, means that the machining element machines the floor and / or road surface similar to a mill or a crusher, and that the machining of the floor / road surface is performed independently of the direction of rotation of the tool. Furthermore, a blunt shape is less sensible for strikes against projections, irregularities, edges etc in the floor / road surface. This strike / shock resistance of the tool is further enhanced by making the tool end in poly crystalline or poly compact diamond. Moreover, if such an inventive machining element is combined with cutting elements on the same tool, the inventive machining element enhances the engagement for the cutting element in the floor / road surface by milling / scratching the floor / road surface “opening” it up for the cutting edge on the cutting element, which increases the removal rate.

Problems solved by technology

A disadvantage of known tools for machining of floor surfaces is that one and the same tool can not be used for carrier discs rotating in different directions when driven, whereby left hand and right hand versions of the tools have to be manufactured.

These left hand and right hand tool versions also have a disadvantage in that a left hand tool may not be mounted instead of a right hand tool or vice versa, whereby the risk of mistakes when mounting the tools increases.

Moreover, another disadvantage is that prior art tools commonly only have one machining element and one supporting stud that restricts the cutting depth and which stud does not have any machining function, whereby the removal rate of these tools are relatively low.

Furthermore, still another disadvantage is that prior art machining tools have a low resistance against shocks / strikes.

Furthermore, a blunt shape is less sensible for strikes against projections, irregularities, edges etc in the floor / road surface.

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