Dynamic bearing manufacturing method

Abstract

A dynamic bearing manufacturing method including steps as follow. A plate is provided and a plurality of grooves is formed on a surface of the plate. The plate formed with grooves is rolled into a hollow cylinder. The grooves are located on the inner surface of the hollow cylinder, and thus to reduce cost of manufacturing process.

1 . A dynamic bearing manufacturing method, comprising steps of: 
 providing a plate;    forming a plurality of grooves on a surface of the plate; and    rolling the plate into a hollow cylinder, wherein the grooves are located on the inner surface of the hollow cylinder.    
   
   
       2 . The method as claimed in  claim 1 , wherein the plate comprises copper, metal or plastic.  
   
   
       3 . The method as claimed in  claim 1 , wherein the plate comprises two ends engaged to each other.  
   
   
       4 . The method as claimed in  claim 1 , wherein each of the grooves has a shape of fish bone, herringbone, boomerang, slanted line or straight line.  
   
   
       5 . The method as claimed in  claim 1 , wherein the grooves are formed by a tool slitting the surface of the plate, or the grooves are pressed by a punch machine, or the grooves are formed by injection molding.  
   
   
       6 . The method as claimed in  claim 1 , wherein the hollow cylinder is disposed within a sleeve after the step of rolling the plate.  
   
   
       7 . The method as claimed in  claim 6 , wherein the sleeve comprises an axial hole, and the hollow cylinder is disposed within the axial hole of the sleeve.  
   
   
       8 . The method as claimed in  claim 6 , wherein the sleeve is formed by a plurality of separable parts.  
   
   
       9 . The method as claimed in  claim 8 , wherein the separable parts for enclosing the dynamic bearing are assembled into the sleeve.  
   
   
       10 . A dynamic bearing manufacturing method, comprising steps of: 
 providing a plate having two corresponding ends capable of connecting to each other;    forming a plurality of grooves on a surface of the plate; and    connecting the two corresponding ends to each other to form the dynamic bearing.    
   
   
       11 . The method as claimed in  claim 10 , wherein the dynamic bearing comprises an inner hole, and the grooves are formed on a wall of the inner hole.  
   
   
       12 . The method as claimed in  claim 10 , wherein the plate comprises copper, metal or plastic.  
   
   
       13 . The method as claimed in  claim 10 , wherein each of the grooves has a shape of fish bone, herringbone, boomerang, slanted line or straight line.  
   
   
       14 . The method as claimed in  claim 10 , wherein the grooves are formed by a tool slitting the surface of the plate, or the grooves are pressed by a punch machine, or the grooves are formed by injection molding.  
   
   
       15 . The method as claimed in  claim 10 , wherein the dynamic bearing is disposed within a sleeve after the step of connecting the two corresponding ends to each other to form the dynamic bearing.  
   
   
       16 . The method as claimed in  claim 15 , wherein the sleeve comprises an axial hole, and the dynamic bearing is directly disposed within the axial hole of the sleeve.  
   
   
       17 . The method as claimed in  claim 15 , wherein the sleeve is formed by a plurality of separable parts.  
   
   
       18 . The method as claimed in  claim 17 , wherein the separable parts for enclosing the dynamic bearing are assembled into the sleeve.