Method of making golf club head
View Patent ↗A golf club head includes two metal parts which are connected each other by welding their opposite surfaces. A method of making the golf club head constitutes: making the two metal parts, wherein at least one of them is provided with a small protrusion along the surface to be welded; and laser welding the opposite surfaces by applying a laser beam to at least the protrusion so that the molten material of the protrusion penetrates into a gap between the opposite surfaces to connect the two metal parts.
1. A method of making a golf club head, said golf club head comprising two metal parts which are connected each other by welding their opposite surfaces, the method comprising
making said two metal parts, wherein at least one of said two metal parts is provided with a small protrusion along said surface to be welded, and
laser welding said opposite surfaces by applying a laser beam to at least said protrusion so that the molten material of the protrusion penetrates into a gap between the opposite surfaces, wherein
the height of the protrusion is in a range of from 0.3 to 1.0 times a thickness (t) of one of the metal parts which is not larger than the thickness of the other.
2. The method of making a golf club head according to claim 1 wherein
said two metal parts are made of different materials.
3. The method of making a golf club head according to claim 1 wherein
said two metal parts are formed through different methods.
4. The method of making a golf club head according to claim 1 wherein
said two metal parts are formed through different methods which are casting and plastic forming.
5. A wood-type golf club head manufactured according to claim 1 .
6. An iron-type golf club head manufactured according to claim 1 .
7. A method of making a golf club head according to claim 1 , wherein
said gap between the opposite surfaces to be laser welded is in a range of from 0.1 to 0.5 mm.
8. A method of making a golf club head, said golf club head comprising two metal parts which are connected each other by welding their opposite surfaces, the method comprising
making said two metal parts, wherein at least one of said two metal parts is provided with a small protrusion along said surface to be welded, and
laser welding said opposite surfaces by applying a laser beam to at least said protrusion so that the molten material of the protrusion penetrates into a gap between the opposite surfaces, wherein
the height H of the protrusion is in a range of from 0.3 to 1.0 times a thickness (t) of one of the metal parts which is not larger than the thickness of the other, and
the maximum width W of the protrusion is a range of from 0.5 to 2.0 times said height H.
9. A wood-type golf club head manufactured according to claim 8 .
10. An iron-type golf club head manufactured according to claim 8 .
11. The method of making a golf club head according to claim 8 , wherein
said gap between the opposite surfaces to be laser welded is in a range of from 0.1 to 0.5 mm.
12. The method of making a golf club head according to claim 8 , wherein
said two metal parts are made of different materials.
13. The method of making a golf club head according to claim 8 , wherein
said two metal parts are formed through different methods.
14. The method of making a golf club head according to claim 8 , wherein
said two metal parts are formed through different methods which are casting and plastic forming.
15. A method of making a golf club head, said golf club head comprising two metal parts which are connected each other by welding their opposite surfaces, the method comprising
making said two metal parts, wherein at least one of said two metal parts is provided with a small protrusion along said surface to be welded, and
laser welding said opposite surfaces by applying a laser beam to at least said protrusion so that the molten material of the protrusion penetrates into a gap between the opposite surfaces, wherein
the protrusion has a surface 7 a substantially align with one of the opposite surfaces to be laser welded, and a surface 7 b inclined towards the surface 7 a , whereby the protrusion is tapered towards its end.
16. An iron-type golf club head manufactured according to claim 15 .
17. The method of making a golf club head according to claim 15 , wherein
said gap between the opposite surfaces to be laser welded is in a range of from 0.1 to 0.5 mm.
18. The method of making a golf club head according to claim 15 , wherein
said two metal parts are made of different materials.
19. The method of making a golf club head according to claim 15 , wherein
said two metal parts are formed through different methods.
20. The method of making a golf club head according to claim 15 , wherein
said two metal parts are formed through different methods which are casting and plastic forming.
21. A wood-type golf club head manufactured according to claim 15 .