JP2014097209A - Method for manufacturing integrally forged golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an integrally forged golf club head in which noise is not generated when a golf ball is hit by holding a weight in the golf club head solidly, and which shows an excellent appearance with improved quality.SOLUTION: A material rod is forged to form a blank of a golf club head body, and a weight is mounted on a mounting recess of the blank of the golf club head body. The mounting recess is covered with an outer cover, and the blank of the golf club head body and the outer cover are welded and forged to form a golf club head.

Description

    The present invention relates to a method for manufacturing a golf club head, and more particularly to a method for manufacturing a golf club head forged integrally with an iron golf club.

Background technology

    In order to improve the hitting performance of the iron golf club, the head of the iron golf club has a main body and a weight attached to the main body. The weight and body are made of different materials. The weight has a larger or smaller specific gravity than the main body so that the iron golf club head has a better weight distribution. For example, in order to improve the forgiveness of an iron golf club head, a weight having a larger specific gravity than the main body is attached to the lower portion of the back portion of the main body of the golf club head.

  Conventionally, many methods have been employed to attach weights to the body of an iron golf club head. One conventional method is to screw the weight to the back of the body. As another conventional method, there is a method in which the weight is bonded to the back of the main body with an adhesive such as an epoxy adhesive. Another conventional method is to weld the weight to the back of the main body.

  However, since the weight on the back of the main body is exposed to the outside of the main body, it is difficult to securely attach the weight to the main body by screwing or bonding the weight to the main body. Further, according to welding, the weight can be securely attached to the main body by screwing or bonding, but since the weight and the main body are made of different materials, it is difficult to completely weld the two.

  Therefore, the connection between the weight and the main body is still unstable. When the golf club head is used for a certain period, when the golf club head hits the golf ball, the weight may be easily detached from the main body or noise may be generated.

  Further, when the weight is attached to the main body by screwing, bonding, or welding, the weight is exposed to the outside of the golf club head main body, so that the golf club head has an appearance that lacks unity. As a result, the quality of the golf club head cannot be improved.

  In order to overcome these disadvantages, the present invention provides a method of manufacturing an integrally forged golf club head that reduces or eliminates the above problems.

    The main object of the present invention is to provide a method of manufacturing a golf club head that is integrally forged.

  In order to achieve the above object, a golf club head manufacturing method according to the present invention forges a material rod to form a blank (semi-finished product) of a golf club head body, and at least one weight is attached to the golf club head body. The at least one mounting recess of the blank is mounted and covered with at least one outer cover made of the same material as the blank of the golf club head body, the golf club head body blank and the at least one outside The cover is welded and forged to form a golf club head.

  In this way, at least one weight is held securely in the golf club head and will not be removed from the golf club head and will not generate noise when the golf club head strikes a golf ball. Absent. Furthermore, since the at least one weight is not exposed, the golf club head has a good appearance and quality.

  Other objects, advantages, and novel features of the present invention will become more apparent from the following detailed description and the accompanying drawings.

The flowchart which shows the manufacturing method of the golf club head forged integrally according to this invention. The perspective view of the golf club head of the process in the manufacturing method of FIG. 1 which shows that a raw material rod is provided. The perspective view of the golf club head in the process of the manufacturing method of FIG. FIG. 2 is a perspective view of a golf club head in a process according to the manufacturing method of FIG. 1, showing that at least one weight is mounted in at least one mounting recess of a blank of the golf club head body. FIG. 2 is a perspective view of a golf club head during the process according to the manufacturing method of FIG. 1 showing that at least one outer cover is mounted and welded to a golf club head body blank to form a golf club head blank. FIG. 2 is a perspective view of the golf club head in the process of the manufacturing method of FIG. 1, showing that the golf club head blank is forged to form the golf club head.

    As shown in FIG. 1, the integrally forged golf club head manufacturing method according to the present invention includes the following steps.

  As further shown in FIG. 2A, a material rod 1 is prepared. The material rod 1 has a predetermined radius and length based on a predetermined size of the golf club head. The material rod 1 is made of a metal such as carbon steel or stainless steel.

  As further shown in FIG. 2B, the blank 1 of the golf club head body is formed by forging the material rod 1. That is, the blank 2 of the golf club head body having a predetermined shape is formed by pressing the material rod 1 with a mold. The golf club head body blank 2 has a back portion and at least one mounting recess 2A, 2B. At least one mounting recess 2A, 2B is formed on the back of the blank 2 of the golf club head body. The position, size, and shape of each of the at least one mounting recess 2A, 2B are arranged or formed according to the properties of the golf club head, the material of the weight of the golf club head, and the like.

  As further shown in FIG. 2C, at least one weight 3A, 3B is pre-formed and mounted in at least one mounting recess 2A, 2B of the blank 2 of the golf club head body. The weights 3A and 3B are mounted in the corresponding mounting recesses 2A and 2B of the blank 2 of the golf club head body. Each weight 3A, 3B is made of a material selected according to the nature of the golf club head and the position of each weight 3A, 3B.

  The golf club head according to the present invention may have a number of weights 3A and 3B attached to the back of the blank 2 of the golf club head body. The weights 3A and 3B may be made of a single material or different materials. Optionally, one weight 3A may be made of one and the same material, and the other weights 3A and 3B may be made of different materials.

  Each of the weights 3A and 3B may be made of an alloy material having a specific gravity larger or smaller than that of the blank 2 of the golf club head body. Optionally, each weight is a blend of one alloy material with a specific gravity greater than the specific gravity of the golf club head body blank 2 material and another alloy material with a specific gravity less than the specific gravity of the golf club head body blank 2 material. It may be made of a mixed alloy material.

  In the embodiment, the golf club head body blank 2 is made of carbon steel having a specific gravity of about 7.863 g / cc, stainless steel having a specific gravity of about 7.85 g / cc, or the like. The alloy material having a large specific gravity may be tungsten steel having a specific gravity of about 10 to 18 g / cc, a copper alloy having a specific gravity of about 8.0 to 8.9 g / cc, or the like. The alloy material having a small specific gravity may be a titanium alloy having a specific gravity of about 4.2 to 4.8 g / cc, an aluminum alloy having a specific gravity of about 2.5 to 2.8 g / cc, or the like.

  For example, when at least one weight 3A, 3B is attached to the center of the back portion of the blank 2 of the golf club head body, the at least one weight 3A, 3B is preferably made of an alloy material having a small specific gravity. When at least one weight 3A, 3B is attached to the lower portion of the back of the blank 2 of the golf club head body, it is preferable that the at least one weight 3A, 3B is made of an alloy material having a large specific gravity.

  As further shown in FIG. 2D, at least one outer cover 4A, 4B is mounted on the back of the blank 2 of the golf club head body. Each outer cover 4A, 4B covers the corresponding mounting recess 2A, 2B in which the corresponding weight 3A, 3B is mounted. The outer covers 4A and 4B are made of the same material as the blank 2 of the golf club head body. Preferably, each outer cover 4A, 4B has an area larger than the area of the opening of the corresponding mounting recess 2A, 2B, so that the outer cover 4A, 4B completely covers the corresponding mounting recess 2A, 2B.

  The at least one outer cover 4A, 4B is welded to the blank 2 of the golf club head body to form a golf club head blank 5. The at least one outer cover 4A, 4B is welded onto the back of the blank 2 of the golf club head body by welding means such as laser welding to form the golf club head blank 5.

  As further shown in FIG. 2E, the golf club head blank 5 is forged to form a golf club head 6. The golf club head blank 5 is pressed with a die to form a golf club head 6 having a predetermined shape. In this way, at least one outer cover 4A, 4B made of the same material and the blank 2 of the golf club head main body are press-forged to become an integral one. As a result, at least one weight 3A, 3B is held firmly in the golf club head 6.

  The material rod 1 may be bent in advance by a bending device.

  In the process of forging the material rod 1 for forming the blank 2 of the golf club head body, the material rod 1 is pressed with a die to form a blank 2 of the golf club head body. After that, it is forged. Further, this forging step may include a rough forging step and a fine forging step for forging the blank 2 of the golf club head body in order.

  The above-described method for manufacturing an integrally forged golf club head has the following effects. At least one weight 3A, 3B is mounted in at least one mounting recess 2A, 2B of the golf club head body blank 2, and is made of at least one outer cover 4A, 4B made of the same material as the golf club head body blank 2. Covers at least one mounting recess 2A, 2B and is welded. Next, the at least one outer cover 4A, 4B and the golf club head body blank 2 are forged to form the golf club head 6. In this way, the at least one weight 3A, 3B is held firmly in the golf club head 6 and is not detached from the main body, and noise is generated when the golf club head 6 hits the golf ball. It does not occur. Further, the golf club head 6 is formed by welding and forging at least one outer cover 4A, 4B to the blank 2 of the golf club head body, and prevents the exposure of at least one weight 3A, 3B. No. 6 exhibits a good appearance of the intended shape and also improves the quality.

  In the above description, various features and effects of the present invention have been described, along with the detailed structure and properties of the invention, but these disclosures are merely exemplary. Details, particularly details such as matters relating to shape, size or arrangement of parts, are to be considered within the broad general meaning of the terms expressed in the appended claims and are not subject to change within the scope of the principles of the invention. It can be done.

Claims (3)

Preparing a material rod;
Forging the material rod to form a blank of the golf club head body,
The material rod is pressed with a mold to form a blank of the golf club head body,
The golf club head body blank has at least one mounting recess formed on the back of the golf club head body blank; and
Mounting at least one weight in at least one mounting recess of the blank of the golf club head body;
Each covers at least one outer cover made of the same material as the golf club head body blank and covers a corresponding mounting recess to which a corresponding weight is mounted and is mounted on the back of the golf club head body blank. Process,
Welding the at least one outer cover to a blank of the golf club head body to form a golf club head blank;
Forming a golf club head by forging a blank of the golf club head,
The golf club head blank is pressed with a mold to form a golf club head,
The at least one outer cover made of the same material and the blank of the golf club head main body are press-forged and united,
The at least one weight is securely held by the golf club head;
An integrally forged golf club head manufacturing method comprising:     2. The method of manufacturing an integrally forged golf club head according to claim 1, wherein the material rod is bent in advance by a bending device before forging and forming a blank of the golf club head main body.     3. The integrally forged according to claim 2, wherein in the step of forging the material rod, the material rod is forged through a single forging step to form a blank of the golf club head body. A method for manufacturing a golf club head.

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