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 ( 30 a ) to the disc. The machining element has a free end ( 30 b ) 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.

1 . A tool for machining floor and road surfaces, comprising:
 at least one rotatably mounted disc driven during use,   which disc comprises at least one machining element being fixedly attached or attachable at one end to the disc,   wherein the machining element has a free end with a symmetrically blunt shape, designed to machine the floor and/or road surface in a milling or crushing-like manner, 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, and   wherein the free end of the machining element is made of poly crystalline or poly compact diamond (PCD) and/or of mono crystalline diamond (MCD).   
   
   
       2 . A tool according to  claim 1 , wherein the machining element protrudes out of the disc with its longitudinal axis perpendicular to the plane of the disc. 
   
   
       3 . A tool according to  claim 1 , wherein the machining element protrudes out of the disc with its longitudinal axis oblique in relation to the plane of the disc. 
   
   
       4 . A tool according to  claim 1 , wherein the disc comprises at least one machining element protruding out of the disc with its longitudinal axis perpendicular to the plane of the disc and at least one machining element protruding out of the disc with its longitudinal axis inclined in relation to the plane of the disc. 
   
   
       5 . A tool according to  claim 3 , wherein the machining element protrudes out of the disc with its longitudinal axis having an inclination angle (α) of up to 45° in relation to an axis (V) being perpendicular to the plane of the disc. 
   
   
       6 . A tool according to  claim 1 , wherein the free end of the machining element has a rounded shape. 
   
   
       7 . A tool according to  claim 1 , wherein the free end of the machining element has a spherical shape. 
   
   
       8 . A tool according to  claim 1 , wherein the free end of the machining element is chamfered. 
   
   
       9 . A tool according to  claim 1 , wherein the free end of the machining element has a frustoconical shape. 
   
   
       10 . A tool according to  claim 1 , comprising a supporting stud with a support surface in parallel with the plane of the disc for contacting the floor surface. 
   
   
       11 . A tool according to  claim 10 , wherein the supporting stud is a machining element in that its support surface comprises machining abrasives. 
   
   
       12 . A tool according to  claim 1 , comprising a cutting element. 
   
   
       13 . A tool according to  claim 12 , wherein the cutting element has a back-rake angle of between 5°-20°. 
   
   
       14 . A machine for machining floor and road surfaces, comprising at least one tool with at least one rotating disc, wherein the disc comprises at least one machining element in accordance with  claim 1 . 
   
   
       15 . A method for removing a surface layer on a floor or road surface, comprising milling or crushing the surface with a tool as claimed in  claim 1 .