Method for forming a golf club head

Abstract

A method for forming a golf club head includes steps of preparing a cylindrical metal blank, heating the metal blank to become softened, shaping the metal blank by pressing and pushing the metal blank forward on a shaping die with a pushing unit to form a head section and an engagement section extending outwards from the head section, and stamping the head section of the metal blank when the metal blank still has residual heat to shape the head section into a golf club head having two opposite surfaces. A bending step can be executed before or after the stamping step to bend the engagement section. Therefore, the method simplifies the processing procedures greatly, achieves a quick shaping operation, decreases residual materials and processing costs, and increases an economic benefit.

What is claimed is: 
     
         1 . A method for forming a golf club head comprising:
 a preparing step for preparing a cylindrical metal blank, said cylindrical metal blank being made by cutting a cylindrical metal material into segments;   a heating step for heating said cylindrical metal blank with a heating device to soften said cylindrical metal blank;   a shaping step for shaping said heated cylindrical metal blank with a shaping device, said shaping device having a base, a shaping die situated on said base and providing a first end and a second end, and a pushing unit movably disposed relative to said shaping die, said cylindrical metal blank being pressed and pushed by said pushing unit and pushed forward from said first end of said shaping die toward said second end thereof to form a head section and a cylindrical engagement section extending outwards from said head section according to a shape of said shaping die, a width of said head section being larger than a width of said engagement section;   a bending step for bending said engagement section to make said engagement section incline to said head section; and   a stamping step for positioning said head section on a stamping seat and stamping said head section with a stamping press when said cylindrical metal blank still has residual heat, either said stamping seat or said stamping press being provided with a cave having a club-shaped contour to shape said head section into a golf club head with a club shape corresponding to said club-shaped contour of said cave at the time of stamping and forming a hitting surface and a back surface opposite to said hitting surface.   
     
     
         2 . The method according to  claim 1 , wherein said cave is recessed into said stamping seat so that said head section of said metal blank is placed in said cave, then pressed by said stamping press, and thence shaped into said club shape corresponding to said club-shaped contour of said cave. 
     
     
         3 . The method according to  claim 1 , wherein said cylindrical metal blank is heated by high frequency heating, medium frequency heating, or electric heating. 
     
     
         4 . The method according to  claim 1 , wherein said head section is processed and shaped by multi-stage stamping in said stamping step. 
     
     
         5 . The method according to  claim 1 , wherein said back surface of said golf club head is treated with cutting after said stamping step to form a finished shape. 
     
     
         6 . A method for forming a golf club head comprising:
 a preparing step for preparing a cylindrical metal blank, said cylindrical metal blank being made by cutting a cylindrical metal material into segments;   a heating step for heating said cylindrical metal blank with a heating device to soften said cylindrical metal blank;   a shaping step for shaping said heated cylindrical metal blank with a shaping device, said shaping device having a base, a shaping die situated on said base and providing a first end and a second end, and a pushing unit movably disposed relative to said shaping die, said cylindrical metal blank being pressed and pushed by said pushing unit and pushed forward from said first end of said shaping die toward said second end thereof to form a head section and a cylindrical engagement section extending outwards from said head section according to a shape of said shaping die, a width of said head section being larger than a width of said engagement section;   a stamping step for positioning said head section on a stamping seat and stamping said head section with a stamping press when said cylindrical metal blank still has residual heat, either said stamping seat or said stamping press being provided with a cave having a club-shaped contour to shape said head section into a golf club head with a club shape corresponding to said club-shaped contour of said cave at the time of stamping and forming a hitting surface and a back surface opposite to said hitting surface; and   a bending step for bending said engagement section to make said engagement section incline to said head section.   
     
     
         7 . The method according to  claim 6 , wherein said cave is recessed into said stamping seat so that said head section of said metal blank is placed in said cave, then pressed by said stamping press, and thence shaped into said club shape corresponding to said club-shaped contour of said cave. 
     
     
         8 . The method according to  claim 6 , wherein said cylindrical metal blank is heated by high frequency heating, medium frequency heating, or electric heating. 
     
     
         9 . The method according to  claim 6 , wherein said head section is processed and shaped by multi-stage stamping in said stamping step. 
     
     
         10 . The method according to  claim 6 , wherein said back surface of said golf club head is treated with cutting after said stamping step to form a finished shape.