TW201714644A - Manufacturing method of golf club head with weight-balancing block - Google Patents

Abstract

A manufacturing method of golf club head with weight-balancing block is provided, designed to lessen the difficulty of carrying out the soldering step of conventional methods, the manufacturing method of this invention includes: preparing a crude soldering head, with a weight-balancing block received in its groove; a lid welded on the spot of the crude soldering head wherein a priming gap is formed on the periphery of the groove; fine forging the crude soldering head and the lid so that the priming gap is shrunk to a post-forge gap; and filling the post-forge gap with fusing flux.

Description

Method for manufacturing golf club head with weight

The present invention relates to a method of manufacturing a golf club head, and more particularly to a method of manufacturing a golf club head in which a weight is embedded in a head body.

In order to meet the different demanding needs of "low center of gravity", "deep center of gravity", "shocking" or "satisfaction", many golf club heads are equipped with weights different from the head body. To adjust the position or feel of the center of gravity of the overall golf club head; common weight setting parts include the toe, the sole, the heel, and the back of the golf club head body. ), the handle (Hosel) or the hitting panel (Face).

In the conventional manufacturing method, after the weight is placed in the weight groove of the head blank, the outer cover is welded and welded at the opening of the weight groove to close the weight. In the weight slot; the steps of precision forging and rear grinding are subsequently performed to obtain a golf club head with a weight. An embodiment similar to the conventional manufacturing method has been disclosed in the Patent Case of the "Integrated Forged Golf Club Head Manufacturing Method" of the Republic of China Announcement No. I462765.

In detail, when the outer cover is welded, in order to facilitate positioning of the outer cover, the outer cover is generally spot welded to the raw blank of the head, and then along the periphery of the outer cover and the blank of the head. The gap (about 1.0~1.3mm width) is welded to the outer cover of the head and formed into a weld bead. The bead is continuously ground to make the bead flat, and then the step of precision forging is performed; finally, the whole head is polished and polished to obtain a golf club head with a weight.

However, in the conventional manufacturing method, since the outer cover is spot-welded to the head blank, the gap between the outer periphery of the outer cover and the blank of the head is more than 1 mm, causing welding of the outer cover and the When the gap between the head blanks is reduced, the welding speed is required to be uniformly melted, and the wire feeding speed at the time of welding is fast, and the amount of solder to be consumed is large, and the amount of polishing is large, and the amount of polishing of the bead is increased, so that the welding is performed. The efficiency of the road is not good.

On the other hand, when the precision forging step is performed, the gap between the periphery of the outer cover and the blank of the head is filled with solder, so that the pressure of up to 500~700 tons is required for the precision forging and shaping, which not only shortens The service life of the forging die, when the forging is adjacent to or exceeds 700 tons, will cause problems such as forging specifications, weight error and cracking of the weight, resulting in poor product yield.

For the above reasons, it is necessary to improve the manufacturing method of the golf club head with the weight.

The invention provides a method for manufacturing a golf club head with a weight, which can reduce the welding amount and the welding speed.

The invention provides a method for manufacturing a golf club head with a weight, which can reduce the forging pressure.

The method for manufacturing a golf club head with a weight according to the present invention comprises the following steps: preparing a head blank, the head blank has a groove, and the groove receives a weight; The outer cover is spot-welded to the head blank, so that the outer cover forms an initial gap with the circumference of the groove; the head blank and the outer cover are precisely forged to obtain a head semi-finished product, and the initial gap is obtained The forging gap is formed by shrinking; and the molten solder fills the forging gap so that the weight is sealed in the groove to obtain a golf club head with a weight.

Wherein, after the forging gap is filled by the solder, the trace of the grinding and the polishing operation of the integral head are performed.

Wherein, the post-forging gap is about 0.1 to 0.8 mm; preferably 0.3 to 0.5 mm.

Wherein, when the molten solder fills the forging gap, the wire feeding speed of the solder is about 0.08 to 0.14 m/min.

Wherein, the forging pressure of the forged blank head and the outer cover is about 200~300 tons.

Wherein, the outer cover can be combined with the head blank by three-point welding.

Wherein, after the molten solder fills the forging gap, the penetration depth of the solder is about 1.2 to 4 mm.

The material of the outer cover may be the same as the material of the rough blank of the club head; or the material of the rough blank of the club head may be S25C carbon steel, and the outer cover is made of 304 stainless steel.

Accordingly, in the method for manufacturing a golf club head with a weight according to the present invention, the initial gap formed by the outer cover and the circumference of the groove can be reduced and then welded by performing a precision forging step after spot welding. The welding speed during welding is improved, and the welding amount is reduced, thereby improving the welding efficiency and reducing the welding cost. On the other hand, due to the fact that during the forging, the initial gap is not filled with solder, so that the forging pressure is greatly reduced, which helps to extend the service life of the forging die and improve the product yield.

1‧‧‧ head rough embryo

11‧‧‧ Groove

2‧‧‧ Cover

3‧‧‧ head semi-finished products

4‧‧‧ Golf club head with weight

G1‧‧‧ initial gap

G2‧‧‧ Afterging clearance

Fig. 1 is a schematic view showing the manufacturing method of the present invention in which the outer cover is spot-welded to the back of the head.

Fig. 2 is a schematic view showing the implementation of the method for manufacturing a forged blank head and an outer cover of the present invention to reduce the initial gap.

Fig. 3 is a schematic view showing the implementation of the method of the present invention for melting a solder to fill a post-forging gap.

Figure 4: Schematic diagram of the manufacturing method of the present invention after polishing the head.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The method for manufacturing a golf club head with weights according to the present invention can be used to manufacture various types of golf club heads. The drawings of the present invention are exemplified by the manufacture of iron heads, but are not limited thereto. The manufacturing method of the present invention generally comprises the following steps: Referring to FIG. 1, a head blank 1 is prepared, the head blank 1 having a groove 11 in which a weight is accommodated (Fig. Not shown). The present invention does not limit the form, number and arrangement position of the groove 11 and the weight, which can be adjusted according to design requirements by those skilled in the art.

A cover 2 is welded to the head blank 1 to form an initial gap G1 between the outer cover 2 and the periphery of the groove 11. The initial gap G1 has a width of about 1.0 to 1.3 mm. The material of the outer cover 2 may be the same as or similar to the material of the head blank 1 to have better weldability; for example, when the material of the head blank 1 is S25C carbon steel, The outer cover 2 of the same material can be easily welded to the head blank 1 , and if the outer cover 2 of 304 stainless steel is used, the wear resistance can be better, and the outer cover 2 is not easy to be used. Deformed by collision. Moreover, the outer cover 2 can be selectively joined to the head blank 1 by three-point welding to improve the stability of the spot welding.

Referring to FIG. 2, the head blank 1 and the outer cover 2 are precisely forged to obtain a head semi-finished product 3, and the initial gap G1 is reduced to form a forging gap G2. Wherein, due to the precise forging of the head blank 1 and the outer cover 2, the initial gap G1 is not filled with solder, so that the forging pressure only needs about 200~300 tons, the expected shaping effect can be achieved, and the The gap G2 after forging is reduced to 0.1 to 0.8 mm (preferably about 0.3 to 0.5 mm).

Referring to Figures 3 and 4, the molten solder fills the forging gap G2 so that the weight is sealed in the groove 11 to obtain a golf club head 4 having a weight. Wherein, when the molten solder fills the forging gap G2, a welding method such as YAG laser welding or plasma welding may be employed, the wire feeding speed of the solder is about 0.08 to 0.14 m/min, and the penetration depth of the solder is about 1.2. ~4mm.

Moreover, in order to improve the appearance of the golf club head 4 having the weights as a whole, after the forging gap G2 is filled by the solder, a grinding step can be successively performed, and the traces of the grinding and the integral rod are collectively performed. The polishing operation of the head causes the appearance of the golf club head 4 with the weight to be invisible. Accordingly, compared with the conventional manufacturing method, a grinding step is performed after welding, and a grinding step is further performed after the precision forging, and the manufacturing method of the golf club head with the weight of the present invention is performed at the end. A single grinding step can help simplify the process and avoid repeated grinding steps, which can improve process efficiency.

In summary, the method for manufacturing a golf club head with a weight according to the present invention can reduce the initial gap formed by the outer cover and the circumference of the groove by performing a precision forging step after spot welding. Welding improves the welding speed during welding and reduces the amount of welding, which can improve the welding efficiency and reduce the solder consumption to reduce the welding cost. Moreover, the amount of welding is reduced, the amount of grinding can be relatively reduced, and the grinding efficiency is also improved.

In the method for manufacturing a golf club head with weights according to the present invention, in the forging, the initial gap is not filled with solder, so that the forging pressure is greatly reduced, which helps to extend the service life of the forging die and improve the product. rate.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧ head rough embryo

11‧‧‧ Groove

2‧‧‧ Cover

3‧‧‧ head semi-finished products

G1‧‧‧ initial gap

G2‧‧‧ Afterging clearance

Claims (10)

A method for manufacturing a golf club head with a weight, comprising the steps of: preparing a head blank, the head blank having a groove, the groove receiving a weight; and a cover Spot welding is combined with the head blank to form an initial gap between the outer cover and the periphery of the groove; the head blank and the outer cover are precisely forged to obtain a head semi-finished product, and the initial gap is reduced Forming a forging gap; and melting the molten filler to fill the forging gap, so that the weight is sealed in the groove to obtain a golf club head with a weight. The method for manufacturing a golf club head having a weight according to claim 1, wherein the forging gap is filled by the solder, and the trace of the grinding and the polishing operation of the integral head are performed. The method for manufacturing a golf club head having a weight according to claim 1, wherein the forging gap is 0.1 to 0.8 mm. The method for manufacturing a golf club head having a weight according to claim 3, wherein the forging gap is 0.3 to 0.5 mm. The method for manufacturing a golf club head having a weight according to claim 1, wherein the molten wire has a wire feeding speed of 0.08 to 0.14 m/min when the molten solder fills the forging gap. The method for manufacturing a golf club head with a weight according to claim 1, wherein the forging pressure of the forged blank and the outer cover is 200 to 300 tons. The method of manufacturing a golf club head with a weight according to claim 1, wherein the outer cover is joined to the head blank by three-point welding. The manufacturer of a golf club head with a weight as described in claim 1 The method wherein the molten solder fills the post-forging gap, the penetration depth of the solder is 1.2 to 4 mm. The method for manufacturing a golf club head having a weight according to claim 1, wherein the material of the outer cover is the same as the material of the coarse embryo of the head. The method for manufacturing a golf club head with a weight according to claim 1, wherein the head blank is made of S25C carbon steel, and the outer cover is made of 304 stainless steel.