JP2598290B2 - Method for manufacturing wood golf club head - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a method for manufacturing a wood golf club head, and more particularly, to a sole plate attached to a sole portion of a wood golf club head, and a sole plate of the sole plate. The present invention relates to a method for bonding to a metal cylinder mounted on the back side.

[Conventional technology]

Conventionally, a wood golf club head made of a nonmetallic material such as fiber reinforced plastic has a core 10 inserted into the sole of the club head 1 as shown in FIG. The sole plate 3 is mounted via a plurality of anchor pins 2.

On the back side 3a of the sole plate 3, weight adjustment,
A metal-made concave cylinder 4 also having impact resistance of the sole plate 3 is mounted.

[Problems to be solved by the invention]

By the way, as a method for mounting the sole plate 3 and the cylinder 4 as described above, conventionally, as shown in FIG.
As shown in FIG. 3 (b), the back side of the sole plate 3
At a predetermined position of 3a, a counterbore processing 5 for fixing the cylinder 4 is performed, and a welding 7 is performed on the contact surface 6 of the counterbore processing section 5 with the cylinder 4 mounted thereon,
These two members were integrally processed.

However, in many cases, the name of the club head and the count are generally engraved on the surface side 3b of the sole plate 3, and the cylinder 4 is welded to the counterbored portion 5 or the cylinder 4 is firmly attached. When welding is performed with a large wall thickness for fixing, a crack is generated in the stamped portion due to thermal distortion due to welding, causing a problem in the strength of the sole plate 3. It takes a lot of trouble and time, which causes a problem in productivity.

[Means for solving the problem]

The present invention has been devised in view of such a conventional problem, and its object is to use a so-called friction welding method as a method of mounting the cylinder on the sole plate, so that the cylinder can be joined to the joint portion. A method for manufacturing a wood golf club head that can reduce the heat distortion, improve the adhesive strength of the joint, improve the weight adjustment accuracy, and further facilitate the processing, thereby improving the productivity. To provide.

[Action]

In order to achieve the above object, the present invention rotates at least one of the two members at a predetermined number of revolutions in a state where one end of the cylinder and a predetermined position on the back side of the sole plate are in contact with each other. By pressure bonding with the contact surface frictionally melted, and by melting and bonding the materials of both members,
Thermal distortion at the joint between the sole plate and the cylinder is reduced, and the bonding surface is widened, so the strength can be improved, and the accuracy of weight adjustment is also improved because other materials such as welding rods are not interposed. In addition, since the processing can be easily performed, the gist is to improve the productivity.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description, the same components as those of the above-described conventional example are denoted by the same reference numerals and described.

FIGS. 4 (a) and 4 (b) are views for explaining a method of joining the metal sole plate 3 and the metal concave cylinder 4 according to the present invention. In the embodiment, one of the sole plate 3 and the cylinder 4 (for example, the sole plate 3) is attached to a shaft of a rotary driving device (not shown), the other (for example, the cylinder 4) is fixed, and the joining surfaces of the two members are respectively connected. Face to face and make contact.

From such a state, the rotation drive device is set to a predetermined rotation speed,
For example, when the metal member is rotated at about 3000 rpm, frictional heat is generated at the contact surface between the two metal members, and when the metal member is further rotated, the two members start melting.

In this state, when the rotation of the rotary driving device is stopped and the two members are pressed against each other with a predetermined pressure, the molten metals are integrated as shown in FIG. The cylinder 3 and the cylinder 4 have an integral structure.

Such a joining method is generally called a friction welding method,
For example, it becomes possible to easily join the same metal such as aluminum and aluminum or to bond different metals such as aluminum and copper.

According to the present invention, when the metal members of the sole plate 3 and the cylinder 4 are joined as described above, the joint portion of the sole plate 3 is joined by a friction welding method without using a method such as welding. The joint can be easily and easily joined without performing counterboring work or interposing a material such as a welding rod, and the sole plate 3 has little thermal distortion and the like, and the joining strength can be increased.

〔The invention's effect〕

In the present invention, in a state where one end of the cylinder is brought into contact with a predetermined position on the back side of the sole plate as described above,
By rotating at least one of the two members at a predetermined number of revolutions and pressing the contact surfaces of the two members in a frictionally fused state, the materials of the two members are melt-bonded. It is effective.

(A) Since there is little thermal distortion at the joint between the two members, the strength can be increased and the durability can be improved without causing a crack or the like at the cut portion of the sole plate.

(B) Since the bonding surface between both members is widened, the strength is improved.

(C) Since the method is simpler than the conventional joining method, productivity can be improved.

(D) The weight accuracy can be improved without interposing a material such as a welding rod.

[Brief description of the drawings]

FIG. 1 is a sectional view of a conventional wood golf club head, FIG. 2 is a plan view of a conventional sole plate, and FIGS. 3 (a) and 3 (b) show a conventional sole plate and a cylinder. FIGS. 4 (a) and 4 (b) are explanatory diagrams of a joining method of a sole plate and a cylinder embodying the present invention. 1 ... club head, 3 ... sole plate, 3a ... back side of sole plate, 4 ... cylinder, 6 ... contact surface.

Claims (1)

(57) [Claims] 1. A method for manufacturing a wood golf club head, comprising: mounting a metal cylinder on a back side of a metal sole plate; and attaching the sole plate to a sole portion of a club head. By rotating at least one of the two members at a predetermined number of revolutions in a state in which the contact surface and the predetermined position on the back side of the sole plate are in contact with each other, by pressing the contact surfaces of the two members in a frictionally fused state, A method for manufacturing a wood golf club head, comprising: melting and adhering materials of members; and attaching the sole plate thus configured to a sole portion of the club head.