JP2503834B2 - Golf club head manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a hollow golf club head which is so-called metal wood or the like.

[0002]

2. Description of the Related Art Conventionally, as a golf club head of this type (hereinafter referred to as a head), Japanese Patent Laid-Open No. 60-36074 discloses a face member, a top member, a side peripheral member, which is obtained by pressing a metal plate. A hollow golf club head is disclosed in which the sole members are each formed of a metal shell, and these metal shells are integrally connected. In addition, JP-A-63-1
In Japanese Patent No. 54186, a metal plate is pressed to form a face member, an upper half of an upper surface member and a side peripheral surface member, and a lower half of a sole member and a side peripheral surface member by a metal shell. A hollow golf club head is disclosed in which the shells are joined together.

[0003]

By the way, in the head, the angle of the face, that is, the loft angle must be set to a predetermined angle depending on the number of the head or the skill of the player. In the prior art, adjustment of the loft angle at the time of manufacture was performed by welding each member using a jig. However, in this welding work, the work of adjusting the loft angle of the face member using a jig to integrate the jigs has a problem that the workability is relatively low because the jigs are set and integrated one by one. It was

According to the present invention, the above problems are solved and a metal plate is pressed to form a face portion, an upper surface portion, a side peripheral surface portion, and a sole portion by a metal shell, and these are integrally joined to form a hollow. Another object of the present invention is to provide a golf club head manufacturing method for manufacturing the golf club head, wherein the loft angle of the face can be easily adjusted.

[0005]

According to the present invention, a metal plate is pressed to form a face portion, an upper surface portion, a side peripheral surface portion, and a sole portion by a metal shell, and these are integrally joined to form a hollow space. In the method of manufacturing a golf club head for manufacturing a golf club head, when the upper surface is set in a mold and press-worked, the front edge of the upper surface is adjusted to move back and forth so as to correspond to the loft angle of the face. It is a method of manufacturing a golf club head which is set and pressed.

[0006]

With the above construction, the loft angle can be easily adjusted by abutting and fixing the front edge of the upper surface portion and the upper end of the face portion when the respective portions are integrated.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. The head 1 is formed by integrally welding a face member 2 made of a metal shell, an upper surface member 3 serving as an upper surface portion, a side peripheral surface / sole member 4 at their edges, and titanium, titanium alloy, It is formed by pressing metal such as stainless steel or iron using a die. A face 5, which is a shot surface, is formed on the front surface of the face member 2, and a semi-cylindrical portion 6 is provided upright on one side of the upper surface member 3. The side peripheral surface / sole member 4 is formed with a sole portion 7 at a lower portion thereof, and a side peripheral surface portion 8 is formed so as to cover left and right side surfaces and a rear portion. A cylindrical portion 9 is formed. A shaft mounting pipe 11 (hereinafter referred to as a pipe) for mounting the shaft 10 is provided between the pair of semi-cylindrical portions 7 and 9. The pipe 11 has its upper end fixed to the semi-cylindrical parts 7 and 9 and its lower end fixed to the sole part 7, and the lower end of the shaft 10 is fixed to this pipe 11.

FIG. 4 shows a die for pressing the upper surface member 3, and a lower die 12 is used to engage both front and rear sides of a flat metal plate 13 formed in a predetermined shape in advance. Stoppers 14, 14A, 14B and 14C are arranged on all sides. The stopper 14 is fixed to the tip of a slide plate 15, and a long hole 16 is formed in the slide plate 15, and a screw 17 such as a bolt is inserted into the long hole 16 and the screw 17 is Female screw formed on the lower die 12 (not shown)
It can be screwed in and fixed.

Next, the operation of the above configuration will be described. The face member 2, the upper surface member 3, and the side peripheral surface / sole member 4 are manufactured by pressing with a mold, and then the pipe 11 is welded to the side peripheral surface / sole member 4. Next, the upper surface member 3 is welded to the side peripheral surface / sole member 4, and the semi-cylindrical portion 6 is welded to the pipe 11. After this, the face 5 is welded with a predetermined loft angle A. At this time the loft angle A
When increasing the value, the screw 17 is loosened in advance as shown by the one-dot chain line in FIG. 4, the slide plate 15 is moved together with the stoppers 14 and 14A, and the screw 17 is tightened again. After this, the upper die (not shown) is moved to press the metal plate 13. By this press working, the length L of the upper surface member 3 becomes slightly smaller than the initial setting. Therefore, at the time of manufacture, by welding the upper surface member 3 having a small length L to the side peripheral surface / sole member 4 and the face member 2 to the front edge 13A,
The loft angle A of the face 5 can be increased by retracting the front edge 3A of the upper surface member 3.

As described above, in the above embodiment, when the metal plate 13 is set on the lower die 12 by using the stoppers 14, 14A, 14B, 14C, the stopper 14 corresponding to the loft angle A of the face 5 is set. , 14A, 14B, 14C are fixed and pressed to weld the upper end of the face member 2 to the front edge 3A of the upper surface member 3 so that the loft angle A can be easily adjusted and integrated. . Therefore, unlike the conventional case, it is not necessary to use a jig for adjusting the loft angle A when welding the face member 2, and it can be easily manufactured.

The present invention is not limited to the above-described embodiment. For example, a metal plate is pressed to form the face portion, the upper half of the upper surface member and the side peripheral surface member, and the sole member and the side peripheral surface member. Various modifications are possible, such as a structure in which the lower halves are each formed of a metal shell, and these metal shells are integrally joined to manufacture.

[0012]

According to the present invention, a metal plate is pressed to form a face portion, an upper surface portion, a side peripheral surface portion, and a sole portion.
In a method for manufacturing a golf club head in which these are integrally joined to manufacture a hollow golf club head, when the upper surface part is set in a mold and pressed, the front edge of the upper surface part is By adjusting the advancing / retreating so as to correspond to the loft angle and performing the press working, the loft angle can be easily adjusted during manufacturing.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of the present invention.

FIG. 3 is a sectional view showing an embodiment of the present invention.

FIG. 4 is a plan view showing one embodiment of the present invention.

[Explanation of reference numerals] 2 face member 3 upper surface member 4 side peripheral surface / sole member 5 face A loft angle

Claims (1)

(57) [Claims] 1. A golf club for manufacturing a hollow golf club head by pressing a metal plate to form a face portion, an upper surface portion, a side peripheral surface portion, and a sole portion with a metal shell, and integrally connecting these. In the method of manufacturing a head, when the upper surface portion is set in a mold and press-worked, the front edge of the upper surface portion is advanced and retracted so as to correspond to the loft angle of the face, and the press-working is performed. A method for manufacturing a golf club head, comprising: