Device for processing the borders of flat workpieces

Abstract

In the case of a device for trimming plate-like workpieces, such as glass panels, a grinding ring that is rotated around a shaft by a drive is used. The grinding surfaces that act by ablation on the edges of the side of the workpiece are designed to move in the axial direction, so that during trimming, they can follow the edges of the workpiece. The grinding surfaces are automatically positioned on the edges that are to be trimmed of the workpiece, even if the edges do not lie in the prescribed target position. The grinding ring is mounted to float on its carrier via a hydrostatic bearing or a gas bearing.

1 . Device for erosion-treating the edges on sides of flat workpieces with at least one grinding ring, which has grinding surfaces, wherein a carrier that can be driven in rotation around a shaft is provided for the grinding ring and wherein the grinding ring is coupled for rotation to the carrier, the grinding ring is arranged to move on the carrier in the direction of the shaft, wherein the grinding ring is mounted to float on the carrier and wherein the grinding ring is mounted to float on the carrier via a hydrostatic bearing or gas bearing. 
     
     
         2 . The device according to  claim 1 , wherein the coupling has at least one pin as a driving pin and/or guide, which is fastened to the carrier and engages in a hole or recess in the grinding ring. 
     
     
         3 . The device according to  claim 2 , wherein the pin is accommodated in the hole or recess with a slide guide. 
     
     
         4 . The device according to  claim 1 , wherein the grinding surfaces are elastically springy in the direction of the shaft. 
     
     
         5 . The device according to  claim 1 , wherein the grinding ring is loaded in an elastically springy manner in its starting position. 
     
     
         6 . The device according to  claim 1 , wherein the grinding ring comprises two grinding ring parts and wherein the grinding surfaces are provided on the grinding ring parts. 
     
     
         7 . The device according to  claim 1 , wherein the grinding surfaces are designed to be conical or concave. 
     
     
         8 . The device according to  claim 6 , wherein the grinding ring parts are to be loaded on one another by springs. 
     
     
         9 . The device according to  claim 7 , wherein the grinding ring parts are loaded by pneumatic or hydraulic springs. 
     
     
         10 . The device according to  claim 6 , wherein the grinding ring parts are arranged to move on the carrier for the grinding ring in the direction of the shaft. 
     
     
         11 . The device according to  claim 6 , wherein the grinding ring parts are to be loaded on one another on the carrier by springs in terms of a movement. 
     
     
         12 . The device according to  claim 1 , wherein at least one line for feeding a liquid or gaseous medium is provided in the carrier and wherein line branches branch off from the line, which branches flow between the inside surface of the grinding ring and the outside surface of the carrier. 
     
     
         13 . The device according to  claim 1 , wherein the grinding ring is coupled for rotation to the carrier. 
     
     
         14 . The device according to  claim 13 , wherein the coupling comprises at least one pin that engages in a hole or recess in the grinding ring or the grinding ring parts, which pin is fastened to the carrier for the grinding ring. 
     
     
         15 . The device according to  claim 14 , wherein the pin is accommodated in the grinding ring or the grinding ring parts with a slide guide. 
     
     
         16 . The device according to  claim 1 , wherein springs that elastically load the grinding ring or the grinding ring parts into its/their starting position are provided on the carrier. 
     
     
         17 . The device according to  claim 1 , wherein at least one annular space is provided, which space is bounded in places by a grinding ring part, and wherein the line for feeding the liquid or gaseous medium empties into the annular space. 
     
     
         18 . The device according to  claim 17 , wherein a sleeve-like element that encompasses the carrier and that bounds the annular space is provided on at least one grinding ring part and wherein at least one opening is provided in the sleeve-like element, which opening is in the area of the annular space, when the grinding ring part is in the grinding ring part's starting position. 
     
     
         19 . The device according to  claim 1 , wherein the grinding ring has a groove that has grinding surfaces and that is outward-facing. 
     
     
         20 . The device according to  claim 19 , wherein the groove is trapezoidal or V-shaped.