JP7034676B2 - How to make a golf club head - Google Patents

Description

The present invention relates to a method for manufacturing a golf club head.

The conventional method for manufacturing a golf club head includes, for example, a step of preparing two parts and a step of fixing the prepared two parts. Further, in order to make the boundary portion between the two parts inconspicuous, there is a step of polishing or painting in the vicinity of the boundary portion. However, the process of polishing and painting after fixing the two parts is complicated, which is one of the causes of lowering the production efficiency.

Japanese Unexamined Patent Publication No. 2014-004098 Japanese Unexamined Patent Publication No. 2005-296609 Special Table 2010-523217 Publication No. Special Table 2016-512159 Special Table 2010-530783 Gazette Japanese Unexamined Patent Publication No. 2006-181063

An object of the present invention is to provide a method for manufacturing a golf club head, which simplifies the manufacturing process and improves the production efficiency.

The method for manufacturing the golf club head includes a step of preparing a first metal head part having a step portion formed so as to surround the opening, and a fiber-reinforced resin head fixed to the first head part. The process of preparing two parts, masking from a position 0.5 mm or more and 10 mm or less away from the side wall of the step portion of the head first part to the opening , painting the head first part, and then masking. It is a requirement to have a step of removing the head, and then a step of fixing the second head part to the step portion of the first head part.

According to the disclosed technique, it is possible to provide a method for manufacturing a golf club head in which the manufacturing process is simplified and the production efficiency is improved.

It is a figure which illustrates the golf club head 1 which concerns on this embodiment. It is a figure (the 1) which illustrates the manufacturing process of the golf club head 1 which concerns on this embodiment. It is a figure (the 2) which illustrates the manufacturing process of the golf club head 1 which concerns on this embodiment. It is a figure (the 3) which illustrates the manufacturing process of the golf club head 1 which concerns on this embodiment. It is a figure (the 4) which illustrates the manufacturing process of the golf club head 1 which concerns on this embodiment. It is a figure (the 5) which illustrates the manufacturing process of the golf club head 1 which concerns on this embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, the same components may be designated by the same reference numerals and duplicate explanations may be omitted.

1A and 1B are views illustrating the golf club head 1 according to the present embodiment, FIG. 1A is a plan view, and FIG. 1B is a right side view.

The golf club head 1 shown in FIG. 1 is a wood-type golf club head, for example, a driver, but may be a utility or a fairway wood. Further, the golf club head 1 can be assembled by joining a plurality of parts. Hereinafter, the golf club head 1 will be described in detail.

The golf club head 1 is a hollow structure having a head first part 10 and a head second part 20 fixed to the head first part 10. The inner surface of the hollow structure may be referred to as an inner surface of the head, and the outer surface may be referred to as an outer surface of the head.

The head first part 10 has a face portion 11, a crown portion 12, a sole portion 13, a side portion 14, and a hosel portion 15.

The face portion 11 is a portion provided with a face surface to be a striking surface. The crown portion 12 is a portion forming the upper portion of the golf club head 1 together with the head second part 20. The detailed structure of the crown portion 12 and the head second part 20 will be described later. The sole portion 13 is a portion forming the bottom portion of the golf club head 1. The side portion 14 is a portion connecting the crown portion 12 and the sole portion 13. The hosel portion 15 is a portion connected to the shaft.

2 to 6 are views illustrating the manufacturing process of the golf club head 1 according to the present embodiment. In addition, in order to make the drawing easier to understand, it may be shown at a scale different from the actual one.

First, in the process shown in FIG. 2, the head first part 10 is prepared. 2 (a) is a perspective view of the head first part 10 as viewed from the upper surface side, FIG. 2 (b) is a right side view of the head first part 10, and FIG. 2 (c) is a portion A of FIG. 2 (b). A partially enlarged cross-sectional view of the vicinity, FIG. 2 (d) is a partially enlarged cross-sectional view of the vicinity of the portion B of FIG. 2 (b).

The head first part 10 can be manufactured by, for example, casting, forging, a 3D printer, or other molding method. As the material of the head first part 10, for example, a metal material, a non-metal material, a material having a lower specific density than the metal material, or the like can be used. Specific materials include, for example, titanium, titanium alloys, stainless steel, aluminum, aluminum alloys, magnesium, magnesium alloys, fiber reinforced resins and the like.

Here, as an example, it is assumed that a titanium alloy is used as the material of the head first part 10 and the head first part 10 shown in FIG. 2 is manufactured by casting. In the process of manufacturing the head first part 10, a step of polishing the surface of the head first part 10, a step of machining a score line on the face surface of the face portion 11, a step of machining a hosel hole, and the like are performed.

In the head first part 10 shown in FIG. 2 produced through these steps, the crown portion 12 has an opening 121 and a stepped portion 122 formed so as to surround the opening 121. The step portion 122 is located one step below the outer surface of the head, and can position, hold, and fix the outer edge portion of the second head part 20.

Next, in the process shown in FIG. 3, the head second part 20 is prepared. FIG. 3A is a perspective view of the head second part 20 as viewed from the upper surface side, and FIG. 3B is a right side view of the head second part 20. Note that, in FIGS. 3A and 3B, for convenience, the head first part 10 viewed from the same direction as the head second part 20 is shown together with the head second part 20.

The head second part 20 can be manufactured by, for example, casting, forging, a 3D printer, or other molding method. As the material of the head second part 20, for example, a metal material, a non-metal material, a material having a lower specific density than the metal material, or the like can be used. Specific materials include, for example, titanium, titanium alloys, stainless steel, aluminum, aluminum alloys, magnesium, magnesium alloys, fiber reinforced resins and the like.

Here, as an example, it is assumed that the fiber reinforced resin is used as the material of the head second part 20 and the head second part 20 shown in FIG. 3 is manufactured by a mold. If necessary, the second head part 20 may be painted or the like. Further, if necessary, processing such as polishing and machining of the entire surface of the second head part 20 may be performed.

The second head part 20 is a crown part. The head second part 20 is attached to the step portion 122 of the crown portion 12 of the head first part 10, and closes the opening 121.

Next, the crown portion 12 and the side portion 14 of the head first part 10 produced in the process shown in FIG. 2 are painted. The first part 10 of the head can be painted, for example, by the procedure shown below.

First, as shown in FIG. 4, the masking tape 200 is arranged from the position separated from the side wall 122s of the stepped portion 122 of the crown portion 12 to the opening 121 to mask. That is, a part of the step portion 122 and the opening 121 are masked. 4 (a) is a plan view of the head first part 10, and FIG. 4 (b) is a partially enlarged cross-sectional view taken along the line AA of FIG. 4 (a). Note that FIGS. 5 (a), 5 (b), 6 (a), and 6 (b), which will be described later, also show a cross section corresponding to FIG. 4 (b).

In FIG. 4B, the distance L (position separated from the side wall 122s of the step portion 122) from the side wall 122s of the step portion 122 to the side wall 200s of the masking tape 200 facing the side wall 122s of the step portion 122 is, for example, the head. It is 0.5 mm or more and 10 mm or less along the outer surface. Further, the width W of the masked portion of the step portion 122 is, for example, 0.5 mm or more and 10 mm or less along the outer surface of the head.

Next, in addition to the masking tape 200, the face portion 11 and the sole portion 13 are also masked (not shown), and then the crown portion 12 and the side portion 14 are painted and painted as shown in FIG. 5 (a). The part 300 is formed. After forming the painted portion 300, as shown in FIG. 5B, the masking tape 200 and the masking tape (not shown) of the face portion 11 and the sole portion 13 are removed. As a result, the painted portion 300 is formed on the crown portion 12 and the side portion 14, and the painted portion 300 extends inward from the side wall 122s of the stepped portion 122 of the crown portion 12.

It may be painted on the masking tape 200. The paint on the masking tape 200 is removed together with the masking tape 200.

Next, in the process shown in FIG. 6, the head second part 20 is fixed to the step portion 122 of the head first part 10. Specifically, first, as shown in FIG. 6A, the adhesive 400 is applied to the region of the stepped portion 122 of the crown portion 12 where the painted portion 300 is not formed. If the adhesive 400 protrudes from the outer surface of the crown portion 12, it is wiped off or the like. As the adhesive 400, for example, an epoxy-based adhesive, a urethane-based adhesive, a silicon-based adhesive, or the like can be used. Further, double-sided tape or the like may be used as the adhesive 400.

Next, as shown in FIG. 6B, the head second part 20 is brought into contact with the painted portion 300 formed on the side wall 122s of the step portion 122, for example, so that the side wall 20s of the head second part 20 comes into contact with the painted portion 300. It is arranged on the painted portion 300 and the adhesive 400 provided on the step portion 122, and the opening 121 is closed.

Then, by curing the adhesive 400, the head second part 20 is fixed to the step portion 122 of the head first part 10 by the adhesive 400, and the golf club head 1 shown in FIG. 6C is completed.

In the conventional method for manufacturing a golf club head, after the second part of the head is fixed to the first part of the head, the boundary portion between the first part of the head and the second part of the head is polished, and the polished portion is painted. Since this polishing and painting are performed in order to make the boundary portion between the head first part and the head second part inconspicuous, it is necessary to perform this polishing and painting after fixing the two parts. At this time, since the outer edge portion of the head second part is also painted across the boundary portion, there is a problem that the visible area of the head second part is reduced and the design is deteriorated.

On the other hand, in the method of manufacturing the golf club head 1 according to the present embodiment, the surface of the head first part 10 is polished before the head second part 20 is fixed to the head first part 10, and the head first part 20 is polished. After painting the part 10, the head second part 20 is fixed. Specifically, after polishing the surface of the head first part 10, the painted portion 300 is formed so as to extend inward from the outer surface of the crown portion 12 to the inside of the side wall 122s of the step portion 122 of the crown portion 12, and the step portion 122 is formed. The head second part 20 is arranged so as to cover the painted portion 300 provided in the head, and is fixed to the head first part 10.

As a result, the appearance at the boundary portion between the head first part 10 and the head second part 20 can be improved. Therefore, after the head second part 20 is fixed to the head first part 10, it is necessary to polish and paint the boundary portion again. There is no. That is, it is possible to omit the polishing step and the painting step of the boundary portion after the head first part 10 and the head second part 20 are fixed, and it is possible to simplify the manufacturing process and improve the production efficiency.

Further, in the method for manufacturing the golf club head 1 according to the present embodiment, as in the conventional case, in order to make the boundary portion inconspicuous, the outer edge portion of the head second part straddles the boundary portion and is the same as the head first part. Will not be painted. Therefore, the visible area of the head second part 20 does not decrease, the external exposure range of the head second part 20 can be increased, and the design of the golf club head 1 can be improved.

Although the preferred embodiment has been described in detail above, it is not limited to the above-described embodiment, and various modifications and substitutions are made to the above-mentioned embodiment without departing from the scope of the claims. Can be added.

For example, in the above embodiment, the head second part 20 is fixed so as to close the opening 121 of the crown portion 12 of the head first part 10, but the portion having the opening is not limited to the crown portion 12 and the face. It may be a portion 11 or a sole portion 13.

1 Golf club head 10 Head 1st part 11 Face part 12 Crown part 13 Sole part 14 Side part 15 Hosel part 20 Head 2nd part 20s, 122s, 200s Side wall 121 Opening 122 Step part 200 Masking tape 300 Painted part 400 Adhesive

Claims (5)

The process of preparing the first metal head part having a step portion formed so as to surround the opening, and
The process of preparing the second part of the head made of fiber reinforced resin to be fixed to the first part of the head, and
A step of masking from a position separated from the side wall of the step portion of the head first part by 0.5 mm or more and 10 mm or less from the opening to the opening, painting the head first part, and then removing the masking.
After that, a method for manufacturing a golf club head, comprising a step of fixing the second head part to the step portion of the first head part. The method for manufacturing a golf club head according to claim 1, wherein the step of preparing the first head part further includes a step of polishing the surface of the first head part. The method for manufacturing a golf club head according to claim 1 or 2 , wherein the width of the masked portion of the step portion is 0.5 mm or more and 10 mm or less. In the step of fixing the head first part to the step portion, any one of claims 1 to 3 is applied in which the head second part is fixed to the step portion of the head first part using double-sided tape. The method for manufacturing a golf club head according to the description. The item according to any one of claims 1 to 4, which does not include a polishing step and a painting step of the boundary portion between the head first part and the head second part after the head second part is fixed to the head first part. The method for manufacturing a golf club head according to the description.

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