Method for manufacturing golf club head

Abstract

A method for manufacturing a golf club head includes producing a main body wax pattern and an accessory wax pattern. An engaging portion of the main body wax pattern is engaged with an engaging portion of the accessory wax pattern, with a gap being defined between the first engaging portion and the second engaging portion. Then, a low-viscosity volatile solvent is filled into the gap for forming a club head wax pattern by means of bonding of dissolved wax materials of the main body wax pattern and the accessory wax pattern. The club head wax pattern is impregnated in slurry to form a ceramic shell, which is then heated the ceramic shell to release wax in the ceramic shell. Finally, a casting procedure is carried out to form a club head casting in the ceramic shell.

1 . A method for manufacturing a golf club head, comprising: 
 producing a main body wax pattern having a first engaging portion and an accessory wax pattern having a second engaging portion;    engaging the first engaging portion of the main body wax pattern with the second engaging portion of the accessory wax pattern, with a gap being defined between the first engaging portion and the second engaging portion;    filling a low-viscosity volatile solvent into the gap for forming a club head wax pattern by means of bonding of dissolved wax materials of the main body wax pattern and the accessory wax pattern; and    impregnating the club head wax pattern in slurry to form a ceramic shell and then heating the ceramic shell to release wax in the ceramic shell; and    proceeding with a casting procedure to form a club head casting in the ceramic shell.    
   
   
       2 . The method for manufacturing a golf club head as claimed in  claim 1 , wherein the low-viscosity volatile solvent is a volatile organic solvent having a viscosity smaller than 5 cps.  
   
   
       3 . The method for manufacturing a golf club head as claimed in  claim 2 , wherein the low-viscosity volatile solvent is selected from the group comprising aryl solvent, aliphatic solvent, and cyclane solvent.  
   
   
       4 . The method for manufacturing a golf club head as claimed in claim  2 , wherein the low-viscosity volatile solvent is selected from the group comprising toluene, xylene, acetone, petroleum leve, pentane, hexane, propyl bromide, and banana oil and combinations thereof.  
   
   
       5 . The method for manufacturing a golf club head as claimed in  claim 1 , wherein the accessory wax pattern is a striking plate wax pattern.  
   
   
       6 . The method for manufacturing a golf club head as claimed in  claim 5 , wherein the main body wax pattern includes a back cavity extending from a front side of the main body wax pattern through a rear side of the main body wax pattern.  
   
   
       7 . The method for manufacturing a golf club head as claimed in  claim 6 , wherein the back cavity has an undercut.  
   
   
       8 . The method for manufacturing a golf club head as claimed in  claim 6 , wherein the back cavity includes a front side that forms the first engaging portion, the striking plate wax pattern including a rear side having a perimeter edge that forms the second engaging portion.  
   
   
       9 . The method for manufacturing a golf club head as claimed in  claim 1 , wherein the accessory wax pattern is a wax pattern for sealing.  
   
   
       10 . The method for manufacturing a golf club head as claimed in  claim 9 , wherein a bottom wall delimiting the back cavity includes a through-hole, a portion of a perimeter wall delimiting the through-hole forming the first engaging portion, the wax pattern for sealing including a perimeter that forms the second engaging portion.  
   
   
       11 . The method for manufacturing a golf club head as claimed in  claim 10 , wherein the wax pattern for sealing seals a lower end of the through-hole, the club head casting including a compartment with an upwardly facing opening.  
   
   
       12 . The method for manufacturing a golf club head as claimed in  claim 10 , wherein the wax pattern for sealing seals an upper end of the through-hole, the club head casting including a compartment with a downwardly facing opening.