Valve seat finishing devices

Abstract

A valve seat finishing device for use with a spindle having a drive is provided. The valve seat finishing device includes a driver, a valve seat finishing tool, an annular finishing surface on the tool, and a non-dressable super abrasive on the annular finishing surface. The driver has a centering portion and a drive portion. The centering portion is received in a receiving portion of the drive and the drive portion is received in the drive so that rotation of the spindle causes the socket drive to concentrically rotate the driver. The valve seat finishing tool is threadably secured to the driver. The non-dressable super abrasive provides a lapped finish to the valve seat.

1 . A valve seat finishing device for use with a spindle having a socket drive, comprising:
 a ball driver having a centering surface and a drive pin, said centering surface being receivable in a receiving surface of the socket drive and said drive pin being receivable in a drive pin slot of the socket drive so that rotation of the spindle causes the socket drive to concentrically rotate said ball driver; and   a valve seat finishing tool threadably secured to said ball driver, said valve seat finishing tool being configured to provide a lapped finish to the valve seat.   
   
   
       2 . The valve seat finishing device of  claim 1 , wherein said valve seat finishing tool comprises a non-dressable super abrasive. 
   
   
       3 . The valve seat finishing device of  claim 1 , further comprising a pilot shaft secured in a first bore of said ball driver and a second bore of said valve seat finishing tool so that said pilot shaft is concentric to said ball driver and said valve seat finishing tool. 
   
   
       4 . The valve seat finishing device of  claim 3 , further comprising a compression spring disposed about said pilot shaft spring against a bottom face of said valve seat finishing tool. 
   
   
       5 . The valve seat finishing device of  claim 3 , wherein said ball driver comprises one or more threaded set screw openings so that said ball driver can be releasably secured to said pilot shaft by way of one or more set screws. 
   
   
       6 . The valve seat finishing device of  claim 1 , wherein said valve seat finishing tool comprises an annular finishing surface. 
   
   
       7 . The valve seat finishing device of  claim 6 , wherein said annular finishing surface has an angle that corresponds to a desired valve seat angle. 
   
   
       8 . The valve seat finishing device of  claim 6 , wherein said valve seat finishing tool comprises a plated super abrasive on said annular finishing surface. 
   
   
       9 . The valve seat finishing device of  claim 8 , wherein said plated super abrasive comprises a nickel plated diamond layer, a plated cubic-boron-nitride (CBN) layer, and any combinations thereof. 
   
   
       10 . The valve seat finishing device of  claim 8 , wherein said plated super abrasive comprises a grit above about 150. 
   
   
       11 . The valve seat finishing device of  claim 8 , wherein said plated super abrasive comprises a grit between about 180 to about 320. 
   
   
       12 . The valve seat finishing device of  claim 8 , wherein said plated super abrasive comprises a grit of about 240. 
   
   
       13 . The valve seat finishing device of  claim 1 , wherein said ball driver further comprises a retaining rim. 
   
   
       14 . A valve seat finishing device for use with a spindle having a tapered drive, comprising:
 a cone driver having a cone-shaped surface and a key, said cone-shaped surface being receivables in a receiving surface of the tapered drive and said key being receivable in a keyway of the tapered drive so that rotation of the spindle causes the tapered drive to concentrically rotate said cone driver; and   a valve seat finishing tool threadably secured to said cone driver, said valve seat finishing tool being configured to provide a lapped finish to the valve seat.   
   
   
       15 . The valve seat finishing device of  claim 14 , further comprising a pilot shaft secured in a first bore of said tapered driver and a second bore of said valve seat finishing tool so that said pilot shaft is concentric to said cone driver and said valve seat finishing tool. 
   
   
       16 . The valve seat finishing device of  claim 15 , further comprising a compression spring disposed about said pilot shaft spring against a bottom face of said valve seat finishing tool. 
   
   
       17 . The valve seat finishing device of  claim 15 , wherein said cone driver comprises one or more threaded set screw openings so that said cone driver can be releasably secured to said pilot shaft by way of one or more set screws. 
   
   
       18 . The valve seat finishing device of  claim 14 , wherein said valve seat finishing tool comprises an annular finishing surface having a plated super abrasive on said annular finishing surface. 
   
   
       19 . The valve seat finishing device of  claim 18 , wherein said plated super abrasive comprises a nickel plated diamond layer, a plated cubic-boron-nitride (CBN) layer, and any combinations thereof. 
   
   
       20 . The valve seat finishing device of  claim 14 , wherein said key is removably secured to said cone driver by one or more set screws. 
   
   
       21 . A method of finishing a valve seat, comprising:
 operating a machine to rotate a spindle so as to machine and/or grind the valve seat;   connecting a valve seat finishing tool to said spindle, said valve seat finishing tool having an annular finishing surface at a desired angle with a plated super abrasive thereon; and   operating said machine to rotate said spindle so as to finish the valve seat to a lapped finish to the valve seat.   
   
   
       22 . A valve seat finishing device for use with a spindle having a drive, comprising:
 a driver having a centering portion and a drive portion, said centering portion being receivable in a receiving portion of the drive and said drive portion being receivable in the drive so that rotation of the spindle causes the socket drive to concentrically rotate said driver;   a valve seat finishing tool threadably secured to said driver;   annular finishing surface being defined on said valve seat finishing tool; and   a non-dressable super abrasive on said annular finishing surface, said non-dressable super abrasive being configured to provide a lapped finish to the valve seat.   
   
   
       23 . The valve seat finishing device of  claim 22 , wherein said non-dressable super abrasive comprises a nickel plated diamond layer, a plated cubic-boron-nitride (CBN) layer, and any combinations thereof.