Method for making slider of linear bearing

Abstract

A method for manufacturing a slider for a linear bearing device includes mixing metal powders and bonding agent together, molding the metal powders and the bonding agent to form a prototype having one or more ball return passages formed in the prototype, heating the prototype to remove the bonding agent from the prototype, and sintering the prototype to form the slider. The metal powders include a number of greater and a number of smaller metal powders having different nominal diameters. The smaller metal powders include a spherical shape. The greater metal powders include an irregular shape.

1 . A method for manufacturing a slider for a linear bearing device, said method comprising: 
 mixing metal powders and bonding agent together,    molding said metal powders and said bonding agent to form a prototype having at least one ball return passage formed therein,    heating said prototype to remove said bonding agent from said prototype, and    sintering said prototype to form said slider.    
   
   
       2 . The method as claimed in  claim 1 , wherein said metal powders include a plurality of greater and a plurality of smaller metal powders having different nominal diameters.  
   
   
       3 . The method as claimed in  claim 2 , wherein said greater metal powders include a nominal diameter three (3) to six (6) times greater than that of said smaller metal powders.  
   
   
       4 . The method as claimed in  claim 2 , wherein said smaller metal powders occupy a weight of no more than 3% of said metal powders for forming said slider.  
   
   
       5 . The method as claimed in  claim 2 , wherein said smaller metal powders include a spherical shape.  
   
   
       6 . The method as claimed in  claim 2 , wherein said greater metal powders include an irregular shape.  
   
   
       7 . A slider for a linear bearing device comprising: 
 at least one loaded ball rolling face and at least one ball return passage formed therein, and    said slider being manufactured with mold injecting processes.    
   
   
       8 . The slider as claimed in  claim 7 , wherein said at least one ball return passage of said slider includes a square cross section.  
   
   
       9 . The slider as claimed in  claim 7 , wherein said slider includes at least one groove formed therein and communicating with and parallel to said at least one ball return passage.  
   
   
       10 . The slider as claimed in  claim 7 , wherein said slider includes at least one peripheral slot formed therein.  
   
   
       11 . The slider as claimed in  claim 7 , wherein said slider is made of a plurality of greater and a plurality of smaller metal powders having different nominal diameters.  
   
   
       12 . The slider as claimed in  claim 11 , wherein said greater metal powders include a nominal diameter three (3) to six (6) times greater than that of said smaller metal powders.  
   
   
       13 . The slider as claimed in  claim 11 , wherein said smaller metal powders occupy a weight of no more than 3% of said metal powders for forming said slider.  
   
   
       14 . The slider as claimed in  claim 11 , wherein said smaller metal powders include a spherical shape.  
   
   
       15 . The slider as claimed in  claim 11 , wherein said greater metal powders include an irregular shape.  
   
   
       16 . The slider as claimed in  claim 7  further comprising at least one threaded hole formed therein.  
   
   
       17 . The slider as claimed in  claim 7 , wherein said slider includes a density greater than 98% of a density of raw material for forming said slider.