Grinding disc for a grinding device and grinding system

Abstract

A grinding disc for a grinding device, with a fastening interface formed for rotationally fixed fastening to a driven member of the grinding device such that the grinding disc, limited by a peripheral disc rim surface, can be driven into a grinding movement. The grinding disc has a fastening surface on a working side, to which fastening surface a grinding means provided with an abrasion layer can be or is detachably fastened via fastening means. The grinding disc has dust extraction openings arranged on the fastening surface and air intake openings arranged on the disc rim surface, which are connected respectively to dust outlet openings arranged on the device side of the grinding disc via an extraction channel system running in the grinding disc, with the result that, during grinding, the resulting grinding dust can be removed by means of a dust extraction device coupled to the grinding device.

1 . A griding disc for a grinding device
 a fastening interface formed on a device side of the grinding disc facing the grinding device, which fastening interface is formed for rotationally fixed fastening to a driven member of the grinding device such that the grinding disc, limited by a peripheral disc rim surface, can be driven into a grinding movement suitable for grinding machining of a workpiece,   wherein the grinding disc has a fastening surface on a working side axially opposite the device side, to which fastening surface a grinding means provided with an abrasion layer can be or is detachably fastened via fastening means,   wherein the grinding disc has dust extraction openings arranged on the fastening surface and air intake openings arranged on the disc rim surface, which openings are respectively connected via an extraction channel system running in the grinding disc to dust outlet openings arranged on the device side of the grinding disc, with the result that, during grinding, the resulting grinding dust can be removed by means of a dust extraction device coupled to the grinding device,   wherein the dust outlet openings are respectively connected via axial through-channels to first dust extraction openings arranged on the fastening surface, wherein a radial extraction channelextending radially outwards branches off respectively from the axial through-channels, which extraction channel opens into one of the peripheral air intake openings, and wherein an axial extraction channel branches off respectively from the radial extraction channelsand opens on the fastening surface via a second dust extraction opening.   
     
     
         2 . The grinding disc according to  claim 1 , wherein at least two of the axial through-channels, arranged adjacent to one another in peripheral direction of the grinding disc, are connected to one another via a connecting channel running in peripheral direction. 
     
     
         3 . The grinding disc according to  claim 2 , wherein an axial additional extraction channel branches off from the at least one connecting channel, which additional extraction channel opens out via a third dust extraction opening on the fastening surface. 
     
     
         4 . The grinding disc according to  claim 2 , wherein a curved additional extraction channel branches off from the at least one connecting channel, which extraction channel has a radial channel section connected to the connecting channel and an axial channel section abutting against the radial channel section, which axial channel section opens onto the fastening surface via a fourth dust extraction opening on the fastening surface. 
     
     
         5 . The grinding disc according to  claim 2, 4 , wherein the at least one connecting channel is formed curved in arc shape in peripheral direction of the grinding disc. 
     
     
         6 . The grinding disc according  claim 1 , wherein the air intake openings respectively open out by means of a channel-shaped section. 
     
     
         7 . The grinding disc according to  claim 6 , wherein the channel-shaped section is formed edge-less, in particular tangent-constant. 
     
     
         8 . The grinding disc according to  claim 7 , wherein the channel-shaped section is formed in a parabola shape in the cross-section. 
     
     
         9 . The grinding disc according to  claim 1 , wherein a base part equipped with the fastening surface and the dust extraction openings, and a cover part which is or can be detachably fastened to the base part via a fastening device, which cover part is equipped with the fastening interface for fastening to the driven member and the dust outlet openings. 
     
     
         10 . The grinding disc according to  claim 1 , that wherein the fastening surface of the grinding disc has an annular outer edge section in which exclusively the second dust extraction openings are arranged. 
     
     
         11 . A grinding system, with a grinding disc according to  claim 1 , and with a grinding means in the form of an abrading disc which is or can be fastened to the fastening surface of the grinding disc via fastening means and has intake through holes which are flush with the dust extraction openings arranged on the fastening surface of the grinding disc.