Sand-belt finishing machine having a small size

Abstract

A sand-belt finishing machine includes a main frame, and two grinding devices. The main frame is substantially L-shaped and includes a longitudinal portion and a transverse portion. Each of the two grinding devices has a first end rested on the longitudinal portion of the main frame, and a second end formed with a free end. Thus, the grinding devices are located in the opened space formed by the longitudinal portion and the transverse portion of the main frame, and the second end of each of the grinding devices is formed with a free end, so that the operator can touch the grinding devices easily, thereby facilitating maintenance of the grinding devices.

1 . A sand-belt finishing machine, comprising a main frame, and two grinding devices, wherein: 
 the main frame is substantially L-shaped and includes a longitudinal portion and a transverse portion; and    each of the two grinding devices has a first end rested on and fixed to a first side of the longitudinal portion of the main frame, and a second end formed with a free end.    
   
   
       2 . The sand-belt finishing machine in accordance with  claim 1 , wherein the longitudinal portion and the transverse portion of the main frame form a substantially L-shaped opened space.  
   
   
       3 . The sand-belt finishing machine in accordance with  claim 2 , wherein the two grinding devices are located in the opened space formed by the longitudinal portion and the transverse portion of the main frame and supported by the longitudinal portion of the main frame.  
   
   
       4 . The sand-belt finishing machine in accordance with  claim 1 , wherein the longitudinal portion of the main frame is combined with the transverse portion of the main frame.  
   
   
       5 . The sand-belt finishing machine in accordance with  claim 1 , further comprising a driving device mounted on and protruded outward from a second side of the longitudinal portion of the main frame for driving the two grinding devices.  
   
   
       6 . The sand-belt finishing machine in accordance with  claim 1 , further comprising a lift device mounted on the transverse portion of the main frame, and including a lift platform that is movable relative to the two grinding devices and the transverse portion of the main frame.