Removal structure for central shaft of sanding belt

Abstract

A removal structure for a central shaft of a sanding belt is fixed on a grinding machine, and the grinding machine contains: a driver, a driving shaft mounted on a top of the driver, a fitting sleeve extending outwardly from a central position of the driving shaft, a conical groove defined in the fitting sleeve, and at least one L-shaped notch formed on a peripheral wall of the fitting sleeve. A connection column is fitted with the driving shaft and includes a central shaft formed in a cone shape so as to correspond to the conical groove of the fitting sleeve, and the central shaft has at least one locking post corresponding to the at least one L-shaped notch.

What is claimed is: 
     
         1 . A removal structure for a central shaft of a sanding belt being fixed on a grinding machine, and a grinding machine comprising: a driver, a driving shaft mounted on a top of the driver, a fitting sleeve extending outwardly from a central position of the driving shaft, a conical groove defined in the fitting sleeve, and at least one L-shaped notch formed on a peripheral wall of the fitting sleeve;
 wherein a connection column is fitted with the driving shaft and includes a central shaft formed in a cone shape so as to correspond to the conical groove of the fitting sleeve, and the central shaft has at least one locking post corresponding to the at least one L-shaped notch.   
     
     
         2 . The removal structure for the central shaft of the sanding belt as claimed in  claim 1 , wherein the at least one L-shaped notch is formed on the peripheral wall of the fitting sleeve in an array arrangement. 
     
     
         3 . The removal structure for the central shaft of the sanding belt as claimed in  claim 1 , wherein a number of the at least one locking post is equal to that of the at least one L-shaped notch. 
     
     
         4 . The removal structure for the central shaft of the sanding belt as claimed in  claim 1 , wherein a diameter of a lower section of each of the at least one L-shaped notch is less than each of the at least one locking post.