Patent ID: 8042253

Claim:
A method for manufacturing a club head comprising steps of: (a) providing a sole base, a crown cover and a striking face plate; wherein the sole base having a top edge; a side edge; and a lower lip being formed on the top edge of the sole base; the crown cover having an outer edge; an inner edge; and an upper lip being formed on the outer edge of the crown cover and corresponding to the lower lip of the sole base; and the striking face plate having an inner surface; a striking section having an outer edge; an attaching wall being formed on and abutting the outer edge of the striking section and having a top mounting surface; a bottom mounting surface; and an outer surface; a first alignment groove being formed on the bottom mounting surface and corresponding to the side edge of the sole base; a second alignment groove being formed on the top mounting surface and corresponding to the inner edge of the crown cover; and a brim being formed around the outer surface of the attaching wall and abutting the bottom mounting surface and the top mounting surface and having an alignment notch being defined through the brim between the first alignment groove and the second alignment groove and communicating with the first alignment groove and the second alignment groove; (b) assembling a club head by mounting the sole base and the crown cover on the striking face plate to form the club head; wherein the side edge of the sole base being mounted in the first alignment groove of the striking face plate; the inner edge of the crown cover being mounted in the second alignment groove of the striking face plate; and the lower lip of the sole base and the upper lip of the crown cover being mounted in the alignment notch of the striking face plate; (c) fore-welding the club head by welding the sole base and the crown cover and the striking face plate using a spot welding apparatus; (d) post-welding the club head by welding the sole base and the crown cover and the striking face plate using a welding apparatus; and (e) grinding an outer surface of the club head using a grinding apparatus to make the outer surface of the club head smooth.