Tool having a rotating processing unit

Abstract

A tool with a rotating processing unit with tool elements, preferably an abrading or polishing tool, and with a motor including a drive shaft for driving the processing unit is provided. The drive shaft is drivingly connected with a drive plate disposed at right angles to the drive shaft and provided with first connecting device releasably interacting with corresponding second connecting device which are connected with a base plate for the processing unit. The processing unit will thus be driven by the engagement of the first and second connecting device. The tool elements are fixed in the base plate. By this design it is possible for a user to replace the processing unit rapidly and in a simple way without needing to replace the individual tool elements.

1 . A tool with rotating processing unit with tool elements, preferably an abrading or polishing tool, and with a motor including a drive shaft for driving the processing unit, wherein the drive shaft is drivingly connected with a drive plate disposed at right angles to the drive shaft, wherein the drive plate is provided with first connecting means releasably interacting with corresponding second connecting means which are connected with a base plate for the processing unit such that the processing unit is driven by engagement of the first and second means, and that the tool elements are fixedly mounted in the base plate. 
     
     
         2 . The tool according to  claim 1 , wherein the first and second connecting means are chosen among hook and loop connections and bayonet connections. 
     
     
         3 . The tool according to  claim 1  wherein the drive plate and the processing unit are enclosed by a housing which is fixed in relation to the motor and which is provided with a connection for exhausting material removed by the use of the tool elements of the processing unit, as the drive plate and the processing unit are provided with openings for passage of the material. 
     
     
         4 . The tool according to  claim 1 , wherein the tool elements of the processing unit include means for abrading, trimming, polishing, or similar tasks. 
     
     
         5 . The tool according to  claim 1 , wherein the base plate of the processing unit is a circular disc rotating about a central axis and having a surface to which edge parts of a number of pieces of abrasive paper, which are slit inwardly against the surface, are fitted orientated largely perpendicularly out from the surface. 
     
     
         6 . The tool according to  claim 5 , wherein support brushes supporting the pieces of abrasive paper as the pieces of abrasive paper and the support brushes are secured in a common foot which is mounted in the base plate of the processing unit. 
     
     
         7 . The tool according to  claim 5  wherein the pieces of abrasive paper and the support brushes are mounted in foot pieces, that the base plate includes a bottom plate and a top plate provided with mounting apertures for the foot pieces, that the foot pieces are oversized at their bottoms compared with the mounting apertures such that the foot pieces are secured in the mounting apertures when joining the bottom plate and the top plate. 
     
     
         8 . The tool according to  claim 1 , wherein the processing unit includes a circular disc rotating about a central axis and having a surface upon which is mounted a disc-shaped piece of abrasive paper. 
     
     
         9 . The tool according  claim 1 , wherein the processing unit and the drive plate are aligned for rotation about a common central axis. 
     
     
         10 . The tool according to  claim 1 , wherein several processing units are adapted for mutual substitution for application to different processing operations. 
     
     
         11 . The tool according to  claim 1 , wherein the base plate of the processing unit is made by casting.