Polishing device

Abstract

A polishing device is provided with an expandable or contractible polishing body. The polishing device is further provided with a polishing mechanism that includes: a pressing force applying mechanism that applies a pressing force to the polishing body; and a supporting body that supports the pressing force applying mechanism. Moreover, the pressing force applying mechanism is configured to include an advancing or retracting section capable of advancing or retracting, and a swinging section provided in a swingable manner to a tip of the advancing or retracting section, the tip facing the polishing body.

What is claimed is: 
     
         1 . A polishing device that polishes an object-to-be-polished by an expandable or contractible polishing body, the polishing device comprising:
 a pressing force applying mechanism configured to apply a pressing force to the polishing body; and   a supporting body configured to support the pressing force applying mechanism,   the pressing force applying mechanism including an advancing or retracting section configured to advance or retract, and a swinging section provided in a swingable manner to a tip of the advancing or retracting section, the tip facing the polishing body,   the polishing device further comprising a control section configured to control a propelling force applied to the advancing or retracting section.   
     
     
         2 . The polishing device according to  claim 1 , further comprising an eccentric rotation unit configured to eccentrically rotate the supporting body. 
     
     
         3 . The polishing device according to  claim 1 , further comprising a tension applying unit configured to apply a tension to the polishing body. 
     
     
         4 . The polishing device according to  claim 1 , wherein the advancing or retracting section advances or retracts, or the swinging section swings, according to a shape of the object-to-be-polished. 
     
     
         5 . The polishing device according to  claim 1 , further comprising a robot configured to hold the supporting body. 
     
     
         6 . The polishing device according to  claim 1 , wherein the advancing or retracting section is configured from an air cylinder having a rod. 
     
     
         7 . The polishing device according to  claim 1 , wherein the polishing body is an endless belt configured to turn, and the polishing device comprises a driving force applying unit configured to apply, to the endless belt, a driving force for turning. 
     
     
         8 . The polishing device according to  claim 1 , wherein the polishing body is a sheet body hooked to the supporting body. 
     
     
         9 . The polishing device according to  claim 1 , wherein the control section sets the propelling force applied to the advancing or retracting section at a polishing start point and a polishing end point for the object-to-be-polished larger than the propelling force applied to the advancing or retracting section at another region-to-be-polished. 
     
     
         10 . The polishing device according to  claim 7 , wherein the endless belt is a stacked body of an inner peripheral belt positioned on an inner peripheral side and an outer peripheral belt positioned on an outer peripheral side. 
     
     
         11 . The polishing device according to  claim 6 , wherein the air cylinder is provided in plurality, and the control section does not supply or discharge compressed air to or from an air cylinder outside a region-to-be-polished between a polishing start point and a polishing end point, among the air cylinders.