Disc sander for deburring and/or rounding of metal work pieces

Abstract

Disclosed herein are example devices and related methods for deburring and/or rounding of metal work pieces, including, for example, punched and laser-cut pieces, in, for example, a through-feed process. An example device disclosed herein includes a conveyor belt for continuously conveying the work pieces and at least one disc sander rotating around its vertical axis. The example includes a sanding surface that is attachable on its underside facing the work piece. Creating such a device, which also efficiently machines small work pieces, is achieved by holding the sanding surface in a resilient manner in a primarily orthogonal direction relative to the work piece.

1 . A disc sander comprising:
 an underside; and   a sanding surface coupled to the underside and extending across substantially the entire undersidederside, wherein the sanding surface is held resilient in a primarily orthogonal direction relative to the work piece.   
     
     
         2 . The disc sander according to  claim 1  further comprising a a spring element disposed between the underside of the disc sander and the sanding surface. 
     
     
         3 . The disc sander according to  claim 2 , wherein the spring element comprises a dimensionally stable, elastic layer of at least one of a synthetic material or a natural material, wherein the spring extends across substantially the entire underside of the disc sander and rests planarly on the underside of the disc sander. 
     
     
         4 . The disc sander according to  claim 3  further comprising a circulating chamfer formed at the lower edge of the disc sander. 
     
     
         5 . The disc sander according to  claim 3  further comprising a rigid intermediate plate disposed between the spring element and the sanding surface, wherein the rigid intermediate plate comprises a dimensionally stable, elastic layer of at least one of a synthetic material or a natural material. 
     
     
         6 . The disc sander according to  claim 5 , further comprising a circulating chamfer formed on the lower edge of the intermediate plate. 
     
     
         7 . The disc sander according to  claim 3 , wherein 
       the elastic layer comprises at least one of a foam rubber, a sponge rubber, EPDM or other a dimensionally stable and resilient material. 
     
     
         8 . The disc sander according to  claim 2 , wherein the spring element comprises a rigid intermediate plate extending substantially across the entire underside of the disc sander and at least one disc spring, the disc spring ( 234 ) being disposed between the underside of the disc sander and the intermediate plate. 
     
     
         9 . The disc sander according to  claim 8 , further comprising a chamfer formed at the lower edge of the intermediate plate. 
     
     
         10 . The disc sander according to  claim 5 , wherein the intermediate plate comprises one or more of iron, construction steel, stainless steel, aluminum, another metal or a warp resistant synthetic material. 
     
     
         11 . The disc sander according to  claim 1 , wherein the disc sander is held by at least one axially acting helix coiled spring. 
     
     
         12 . The disc sander according to  claim 11 , further comprising a circulating chamfer formed at the lower edge of the disc sander. 
     
     
         13 . The disc sander according to  claim 4 , wherein the chamfer is disposed at an angle relative to the vertical axis of the disc sander of between about 10° and about 45° 
     
     
         14 . The disc sander of  claim 13 , wherein the angle is about 22.5°.