WO2020116093A1 - Golf club head and method for producing golf club head - Google Patents

Golf club head and method for producing golf club head Download PDF

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Publication number
WO2020116093A1
WO2020116093A1 PCT/JP2019/043960 JP2019043960W WO2020116093A1 WO 2020116093 A1 WO2020116093 A1 WO 2020116093A1 JP 2019043960 W JP2019043960 W JP 2019043960W WO 2020116093 A1 WO2020116093 A1 WO 2020116093A1
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Prior art keywords
club head
golf club
protrusion
face surface
forging
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PCT/JP2019/043960
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French (fr)
Japanese (ja)
Inventor
博之 吉田
良平 二村
Original Assignee
ヨネックス株式会社
中央工業株式会社
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Application filed by ヨネックス株式会社, 中央工業株式会社 filed Critical ヨネックス株式会社
Priority to CN201980076276.9A priority Critical patent/CN113056339A/en
Publication of WO2020116093A1 publication Critical patent/WO2020116093A1/en

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K17/00—Making sport articles, e.g. skates

Definitions

  • the present invention relates to a golf club head and a method for manufacturing a golf club head.
  • a golf club head (hereinafter referred to as a club head) has a plurality of linear grooves called score lines on the face surface, and minute irregularities formed by minute grooves narrower and shallower than the score line.
  • minute irregularities on the face surface make it easier for the ball to spin and provide a good feel at impact.
  • the minute grooves of the club head are formed by performing laser processing on the base material of the club head or a nickel plating layer formed on the base material.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a golf club head having excellent productivity while having minute irregularities on the face surface, and to manufacture the golf club head. To provide a method.
  • a main invention for achieving the above object is a golf club head, which is characterized in that the face surface has a protrusion of 25 ⁇ m or less formed by forging. ..
  • Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.
  • the golf iron club head of the present invention it is possible to provide a golf club head having excellent productivity while having minute irregularities on the face surface, and a method for manufacturing the golf club head.
  • FIG. 4A is a diagram showing a protrusion orthogonal to the groove
  • FIG. 4B is a diagram showing a first example of the protrusion inclined with respect to the groove
  • FIG. 4C is a diagram showing the groove.
  • FIG. 4(d) is a diagram showing dot-shaped protrusions arranged in a line
  • FIG. 4(e) is a staggered dot pattern.
  • FIG. 4( f) is a diagram showing a curved protrusion
  • FIG. 4( f) is a diagram showing a protrusion formed on a curved line. It is a figure which shows the result of durability evaluation when a protrusion is shape
  • a golf club head which is characterized by having a forged protrusion of 25 ⁇ m or less on the face surface, which is a golf club head.
  • the golf club head having the protrusions of 25 ⁇ m or less provided on the face surface are formed by forging, the golf club head having the protrusions of 25 ⁇ m or less on the face surface in a shorter time can be used. It becomes possible to manufacture a club head. For this reason, it is possible to provide a golf club head having excellent productivity while having minute irregularities on the face surface.
  • the club head since the club head has a protrusion of 25 ⁇ m or less formed by forging, the surface after forging is not processed such as cutting. Therefore, the club head has higher strength than the club head manufactured by casting or the like by being formed by forging, and the surface having higher strength is not removed by processing or the like. It is possible to leave higher parts. Therefore, high durability can be provided on the face surface and the protrusions of 25 ⁇ m or less.
  • Such a golf club head is characterized in that the face surface has a groove formed by forging and having a depth deeper than 25 ⁇ m. According to such a golf club head, since a groove deeper than 25 ⁇ m is provided on the face surface, it is possible to provide a club head in which water on the face surface due to rain or the like is eliminated and the ball is more likely to be spun. Is possible. Further, since the groove deeper than 25 ⁇ m is formed by forging, it is possible to manufacture the golf club head having the groove deeper than 25 ⁇ m on the face surface in a shorter time. For this reason, it is possible to provide a golf club head having excellent productivity while having a groove deeper than 25 ⁇ m capable of removing water or the like on the face surface.
  • the protrusion has a linear shape. According to such a golf club head, since the connected projections contact the ball by the linear projections provided on the face surface, the golf club head is more likely to be spinned on the ball. It is possible.
  • the protrusion has a linear shape and is provided parallel to the groove.
  • the grooves deeper than 25 ⁇ m and the linear projections of 25 ⁇ m or less are arranged in parallel on the face surface, the grooves deeper than 25 ⁇ m and the linear shapes of 25 ⁇ m or less are formed. Since the formed projection acts to spin the ball in the same direction, it is possible to provide a golf club head that is more susceptible to spin.
  • the protrusion has a linear shape and is provided in a direction intersecting with the groove. According to such a golf club head, since the linear protrusions of 25 ⁇ m or less are arranged on the face surface in the directions intersecting with the grooves deeper than 25 ⁇ m, the direction of the grooves deeper than 25 ⁇ m is obtained. Regardless of the above, it is possible to provide a golf club head in which spin is easily applied in a desired direction by forming linear protrusions of 25 ⁇ m or less along a predetermined direction.
  • the protrusion has a curved shape. According to such a golf club head, since the curved surface-shaped projections of 25 ⁇ m or less are provided on the face surface, the balls are more likely to be spinned by the projections of 25 ⁇ m or less provided on the face surface. Further, it is possible to provide a golf club head excellent in design.
  • this golf club head a plurality of the protrusions are provided and arranged linearly. According to such a golf club head, it is also possible to provide a golf club head in which projections of 25 ⁇ m or less are linearly arranged on the face surface without being connected.
  • the protrusion amount of the protrusion is larger than the protrusion amount of the protrusion formed by sandblasting. According to such a golf club head, since the protrusion of 25 ⁇ m or less, which is larger than the protrusion of the protrusion formed by sandblasting, is provided, it is possible to clearly define the sandblasted region and the hitting region on the face surface. It is possible to provide a visually recognizable golf club head.
  • a method of manufacturing a golf club head which comprises a die preparation step of preparing a forging die having a recess having a depth of 25 ⁇ m or less in a portion forming a face surface, and a club head made of a metal material using the forging die. And a forging step of forging.
  • the method for manufacturing a golf club head is clarified.
  • a golf club head having a protrusion of 25 ⁇ m or less on the face surface can be formed in a shorter time. It is possible to manufacture. Therefore, it is possible to provide a method for manufacturing a golf club head that can manufacture a golf club head having minute irregularities on the face surface in a shorter time.
  • FIG. 1 is a front view of the golf club head of the present embodiment.
  • FIG. 2 is a sectional view taken along the line AA of FIG.
  • the golf club head of the present embodiment is the club head 1 of an iron club.
  • the club head 1 is formed by forging using a low carbon steel (so-called soft iron) of JIS standard S30C or lower (for example, S25C) as a material. As shown in FIG. 1, the club head 1 has a hosel portion 2 into which a shaft is inserted and a main body portion 3 having a face surface 3a.
  • soft iron low carbon steel
  • S30C JIS standard S30C or lower (for example, S25C)
  • the face surface 3a is arranged substantially horizontally in a state of being addressed by the user, and is arranged between a plurality of grooves 3b recessed from the face surface 3a and two adjacent grooves 3b among the plurality of grooves 3b. And a plurality of protrusions 3c protruding from the face surface 3a are provided.
  • three linear protrusions 3c that are arranged parallel to the groove 3b are provided between two adjacent grooves 3b at equal intervals. As shown in FIG.
  • each groove 3b from the face surface 3a is set deeper than 25 ⁇ m
  • the protrusion amount H of each protrusion 3c from the face surface 3a is set to 25 ⁇ m or less (for example, 20 ⁇ m). Has been done.
  • the club head 1 of this embodiment is formed by forging as described above.
  • the club head 1 is formed by forging a soft iron round bar material using a die.
  • a die (not shown) for forming the club head 1 by forging is manufactured (die preparation step S1).
  • This mold is composed of, for example, an upper mold and a lower mold which are divided into upper and lower parts, and when the upper mold and the lower mold are combined, a space equal to the outer shape of the club head is formed inside.
  • Either the upper mold or the lower mold has a face surface forming portion that forms a face surface, and the face surface forming portion is provided with a groove forming protrusion for forming the groove 3b and a protrusion 3c.
  • a linear recess for forming is formed.
  • a soft iron round bar material is heated to a constant temperature (for example, 1000° C. or higher), and is placed on the concave portion of the lower die which has the contour shape of the club head, and the upper die is lowered from above.
  • a constant temperature for example, 1000° C. or higher
  • the upper and lower molds are closed without a gap, the material is brought into close contact with the space inside the mold, and the club head 1 is molded.
  • the outer shape of the club head 1 as well as the groove 3b and the protrusion 3c of the face surface 3a are simultaneously molded.
  • a plurality of times of forming is performed such that a round bar material of soft iron is formed into a state close to a final shape by rough forging, and final fine finishing is performed to form the groove 3b and the protrusion 3c.
  • the process may be included.
  • the forged club head 1 has a shot peening step S3 for performing shot peening processing for removing scale (oxide film), a plating step S4 for performing plating processing on the entire club head 1, and a groove on the face surface 3a of the club head 1.
  • the club head 1 is completed through processing steps such as a sandblasting step S5 of sandblasting the score line area where the 3b and the protrusion 3c are provided. By sandblasting the score line area, the score line area after plating becomes clear and the frictional force with the ball is increased.
  • the protrusion 3c of 25 ⁇ m or less provided on the face surface 3a is formed by forging, so that the protrusion is formed by CNC milling after forming the outer shape. It is possible to manufacture the club head 1 having the protrusion 3c of 25 ⁇ m or less on the face surface 3a in a short time. Therefore, it is possible to provide the club head 1 which is excellent in productivity while having the protrusion 3c of 25 ⁇ m or less on the face surface 3a.
  • the club head 1 is formed by forging the protrusion 3c having a size of 25 ⁇ m or less, the surface after the forging is not subjected to processing such as cutting. Therefore, the club head has higher strength than the club head manufactured by casting or the like by being formed by forging, and the surface having higher strength is not removed by processing or the like, so that the face surface 3a and the protrusion 3c of 25 ⁇ m or less are used. It is possible to leave a portion having high strength. Therefore, it is possible to provide the face surface 3a and the protrusions 3c of 25 ⁇ m or less with high durability.
  • the groove 3b deeper than 25 ⁇ m is provided in the face surface 3a, it is possible to provide a club head in which water on the face surface 3a due to rain or the like is eliminated and the ball is more likely to be spun. Further, since the groove 3b deeper than 25 ⁇ m is formed by forging, it can be formed simultaneously with the protrusion 3c. Therefore, it is possible to manufacture the club head 1 having the groove 3b deeper than 25 ⁇ m on the face surface 3a in a shorter time. Therefore, it is possible to provide the club head 1 which is excellent in productivity while having a groove 3b deeper than 25 ⁇ m capable of removing water and the like and a protrusion 3c of 25 ⁇ m or less on the face surface 3a.
  • the linear protrusion 3c provided on the face surface 3a causes the connected protrusion 3c to come into contact with the ball, so that it is possible to provide the club head 1 in which the ball is more likely to be spun.
  • the linear protrusion 3c of 25 ⁇ m or less is arranged in parallel with the groove 3b deeper than 25 ⁇ m, the groove 3b deeper than 25 ⁇ m and the linear protrusion 3c of 25 ⁇ m or less form a ball. It acts to spin in the direction. Therefore, it is possible to provide the club head 1 in which spin is more likely to occur.
  • the protrusions 3c may be provided so as to intersect with the grooves 3b so as to be inclined.
  • the linear projection 3c of 25 ⁇ m or less is formed along the predetermined direction so that spin in the desired direction is easily applied. It is possible to provide 1. 4(a) to 4(f) show a projecting portion 3c provided between two adjacent grooves 3b by enlarging a part of the face surface 3a.
  • the protrusions 3c having a size of 25 ⁇ m or less are not necessarily connected to each other.
  • the dot-shaped protrusions 3c are arranged in a line, or as shown in FIG. 4(e). As described above, they may be arranged in a staggered pattern.
  • the protrusion 3c having a linear shape of 25 ⁇ m or less does not have to be a linear shape, but the protrusion 3c may be provided in a curved shape as shown in FIG. 4(f), for example. In this case, it is possible to provide the club head 1 which is more likely to be spun on the ball by the protrusion 3c of 25 ⁇ m or less provided on the face surface 3a and is excellent in design.
  • the protrusion amount H of the protrusion 3c is larger than the protrusion amount of the protrusion formed by sandblasting, it is possible to clearly visually recognize the sandblasted region and the hitting region on the face surface 3a. It is possible to provide 1.
  • the face surface 3a is formed in one forging step S2 by using the forging die having the depression having the depth of 25 ⁇ m or less in the portion forming the face surface 3a. It is possible to manufacture the club head 1 having the protrusion 3c of 25 ⁇ m or less and the groove 3b deeper than 25 ⁇ m. Therefore, it is possible to provide a method for manufacturing a golf club head which can manufacture the club head 1 having the protrusion 3c of 25 ⁇ m or less and the groove 3b deeper than 25 ⁇ m on the face surface 3a in a shorter time. Is.
  • FIG. 5 is a diagram showing the results of durability evaluation when the protrusion is formed by forging and when it is formed by CNC milling.
  • the club head 1 in which the projection 3c of 25 ⁇ m or less is formed by forging on the face surface 3a and the projection 3c′ having the same shape by the CNC milling are formed.
  • the state of the protrusions 3c and 3c′ after performing a bunker shot of 250 balls is compared using the club head 1′.
  • the protrusion 3c′ between the two grooves 3b′ is almost worn after a 250-ball bunker shot.
  • the flat portion A without the protrusions 3c' can be seen, but the club head 1 in which the protrusions 3c are formed by forging has a portion where the three protrusions 3c remain even after performing a bunker shot of 250 balls. B is clearly confirmed.
  • the club head 1 of the above embodiment in which the protrusion 3c is formed by forging has a higher durability of the protrusion 3c than the club head 1′ in which the protrusion 3c′ is formed by CNC milling. I was able to confirm.
  • the present invention is not limited to this, and two or less or four or more between the adjacent grooves 3b are provided. You may have the protrusion part 3c.
  • the example in which the protrusions 3c are provided between the grooves 3b adjacent to each other has been described.
  • the protrusions 3c are recesses, the protrusions 3c are provided on the face surface so that they are adjacent to each other. It is possible to form minute unevenness between the matching grooves 3b.
  • an example in which soft iron is used as the material has been described, but the material is not limited to soft iron and may be any metal material.

Abstract

[Problem] To provide a golf club head that is equipped with minute recesses and protrusions on a face surface thereof and that has excellent production properties. [Solution] A golf club head in which a face surface (3a) includes protrusions (3c) of 25 µm or less formed by forging.

Description

ゴルフ用クラブヘッド、及び、ゴルフ用クラブヘッドの製造方法Golf club head and method for manufacturing golf club head
　本発明は、ゴルフ用クラブヘッド、及び、ゴルフ用クラブヘッドの製造方法に関する。 The present invention relates to a golf club head and a method for manufacturing a golf club head.
　ゴルフ用クラブヘッド（以下、クラブヘッドという）のなかには、フェース面にスコアラインと呼ばれる直線状をなす複数の溝や、スコアラインよりも幅が狭く浅い微少溝などにより微少な凹凸が設けられているものがある（例えば、特許文献１参照）。このようなフェース面における微少な凹凸は、ボールへのスピンがよりかかり易くなるとともに良好な打感が得られるとされている。また、上記クラブヘッドの微少溝は、クラブヘッドの素地、または、素地上に形成したニッケルめっき層にレーザー加工を施して形成されている。 A golf club head (hereinafter referred to as a club head) has a plurality of linear grooves called score lines on the face surface, and minute irregularities formed by minute grooves narrower and shallower than the score line. There is one (for example, refer to Patent Document 1). It is said that such minute irregularities on the face surface make it easier for the ball to spin and provide a good feel at impact. Further, the minute grooves of the club head are formed by performing laser processing on the base material of the club head or a nickel plating layer formed on the base material.
特開２０１５－１０７２２７号公報JP, 2005-107227, A
　上述したように、フェース面に微少な凹凸が設けられているクラブヘッドは、クラブヘッドの外形形状を成型した後にレーザー加工等の後加工が施されているため、成型とは別に加工に時間を要し、生産性が悪いという課題がある。
　本発明は、かかる事情に鑑みてなされたものであり、その目的とするところは、フェース面に微少な凹凸を備えつつも生産性に優れたゴルフ用クラブヘッド、及び、ゴルフ用クラブヘッドの製造方法を提供することにある。 As described above, since the club head having minute irregularities on the face surface is subjected to post-processing such as laser processing after molding the outer shape of the club head, it takes time to process the molding separately from the molding. The problem is that productivity is poor.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a golf club head having excellent productivity while having minute irregularities on the face surface, and to manufacture the golf club head. To provide a method.
　上記目的を達成するための主たる発明は、ゴルフ用クラブヘッドであって、フェース面に、鍛造で形成された２５μｍ以下の突部を有している、ことを特徴とするゴルフ用クラブヘッドである。
　本発明の他の特徴については、本明細書及び添付図面の記載により明らかにする。 A main invention for achieving the above object is a golf club head, which is characterized in that the face surface has a protrusion of 25 μm or less formed by forging. ..
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.
　本発明のゴルフ用アイアンクラブヘッドによれば、フェース面に微少な凹凸を備えつつも生産性に優れたゴルフ用クラブヘッド、及び、ゴルフ用クラブヘッドの製造方法を提供することが可能である。 According to the golf iron club head of the present invention, it is possible to provide a golf club head having excellent productivity while having minute irregularities on the face surface, and a method for manufacturing the golf club head.
本実施形態のクラブヘッドの正面図である。It is a front view of the club head of this embodiment. 本実施形態のクラブヘッドの断面図である。It is sectional drawing of the club head of this embodiment. クラブヘッドの製造方法を示す図である。It is a figure which shows the manufacturing method of a club head. 図４（ａ）は、溝と直交する突部を示す図、図４（ｂ）は、溝に対して傾斜する突部の第１例を示す図、図４（ｃ）は、溝に対して傾斜する突部の第２例を示す図、図４（ｄ）は、線状に並べて設けられたドット状の突部を示す図、図４（ｅ）は、千鳥状に配置されたドット状の突部を示す図、図４（ｆ）は、曲線上に形成されている突部を示す図である。4A is a diagram showing a protrusion orthogonal to the groove, FIG. 4B is a diagram showing a first example of the protrusion inclined with respect to the groove, and FIG. 4C is a diagram showing the groove. FIG. 4(d) is a diagram showing dot-shaped protrusions arranged in a line, and FIG. 4(e) is a staggered dot pattern. FIG. 4( f) is a diagram showing a curved protrusion, and FIG. 4( f) is a diagram showing a protrusion formed on a curved line. 突部を鍛造により成型した場合とＣＮＣミルド加工により形成した場合との耐久性評価の結果を示す図である。It is a figure which shows the result of durability evaluation when a protrusion is shape|molded by forging and when it forms by CNC milling process.
＝＝＝概要＝＝＝
　本明細書及び図面の記載により、少なくとも、以下の事項が明らかとなる。
　ゴルフ用クラブヘッドであって、フェース面に、鍛造で形成された２５μｍ以下の突部を有している、ことを特徴とするゴルフ用クラブヘッドが明らかとなる。 ===Overview===
At least the following matters will be made clear by the description of the present specification and the drawings.
A golf club head, which is characterized by having a forged protrusion of 25 μm or less on the face surface, which is a golf club head.
　このようなゴルフ用クラブヘッドによれば、フェース面に設けられている２５μｍ以下の突部は鍛造で形成されているので、より短時間にてフェース面に２５μｍ以下の突部を備えたゴルフ用クラブヘッドを製造することが可能となる。このため、フェース面に微少な凹凸を備えつつも生産性に優れたゴルフ用クラブヘッドを提供することが可能である。 According to such a golf club head, since the protrusions of 25 μm or less provided on the face surface are formed by forging, the golf club head having the protrusions of 25 μm or less on the face surface in a shorter time can be used. It becomes possible to manufacture a club head. For this reason, it is possible to provide a golf club head having excellent productivity while having minute irregularities on the face surface.
　また、クラブヘッドは、２５μｍ以下の突部が鍛造で形成されているので、鍛造後の表面には切削等の加工が施されていない。このため、鍛造で形成されることにより鋳造等にて製造されたクラブヘッドより高い強度を備えると共に、より強度が高い表面を加工等により除去しないので、フェース面及び２５μｍ以下の突部に強度がより高い部位を残存させることが可能である。このため、フェース面及び２５μｍ以下の突部に高い耐久性を備えることが可能である。 Also, since the club head has a protrusion of 25 μm or less formed by forging, the surface after forging is not processed such as cutting. Therefore, the club head has higher strength than the club head manufactured by casting or the like by being formed by forging, and the surface having higher strength is not removed by processing or the like. It is possible to leave higher parts. Therefore, high durability can be provided on the face surface and the protrusions of 25 μm or less.
　かかるゴルフ用クラブヘッドであって、前記フェース面に、鍛造で形成された深さが２５μｍより深い溝を有している、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に２５μｍより深い溝が設けられているので、雨等によるフェース面の水等を排除してボールにスピンがよりかかり易いクラブヘッドを提供することが可能である。また、２５μｍより深い溝は、鍛造で形成されているので、より短時間にてフェース面に２５μｍより深い溝を備えたゴルフ用クラブヘッドを製造することを可能とする。このため、フェース面に水等を排除可能な２５μｍより深い溝を備えつつも生産性に優れたゴルフ用クラブヘッドを提供することが可能である。 Such a golf club head is characterized in that the face surface has a groove formed by forging and having a depth deeper than 25 μm.
According to such a golf club head, since a groove deeper than 25 μm is provided on the face surface, it is possible to provide a club head in which water on the face surface due to rain or the like is eliminated and the ball is more likely to be spun. Is possible. Further, since the groove deeper than 25 μm is formed by forging, it is possible to manufacture the golf club head having the groove deeper than 25 μm on the face surface in a shorter time. For this reason, it is possible to provide a golf club head having excellent productivity while having a groove deeper than 25 μm capable of removing water or the like on the face surface.
　かかるゴルフ用クラブヘッドであって、前記突部は、線状をなしている、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に設けられている線状の突部により、繋がった突部がボールと接触するので、ボールにスピンがよりかかり易いゴルフ用クラブヘッドを提供することが可能である。 In this golf club head, the protrusion has a linear shape.
According to such a golf club head, since the connected projections contact the ball by the linear projections provided on the face surface, the golf club head is more likely to be spinned on the ball. It is possible.
　かかるゴルフ用クラブヘッドであって、前記突部は、線状をなし、前記溝に対して平行に設けられている、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に、２５μｍより深い溝と２５μｍ以下の線状をなす突部とが平行に配置されているので、２５μｍより深い溝と２５μｍ以下の線状をなす突部とが、ボールを同方向にスピンさせるべく作用するので、スピンが更にかかり易いゴルフ用クラブヘッドを提供することが可能である。 In such a golf club head, the protrusion has a linear shape and is provided parallel to the groove.
According to such a golf club head, since the grooves deeper than 25 μm and the linear projections of 25 μm or less are arranged in parallel on the face surface, the grooves deeper than 25 μm and the linear shapes of 25 μm or less are formed. Since the formed projection acts to spin the ball in the same direction, it is possible to provide a golf club head that is more susceptible to spin.
　また、かかるゴルフ用クラブヘッドであって、前記突部は、線状をなし、前記溝に対して交差する方向に設けられている、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に、２５μｍ以下の線状をなす突部が、２５μｍより深い溝に対して互いに交差する方向に配置されているので、２５μｍより深い溝の方向に拘わらず、所定の方向に沿わせて２５μｍ以下の線状をなす突部を形成することにより、所望の方向へのスピンがかかり易いゴルフ用クラブヘッドを提供することが可能である。 Further, in the golf club head, the protrusion has a linear shape and is provided in a direction intersecting with the groove.
According to such a golf club head, since the linear protrusions of 25 μm or less are arranged on the face surface in the directions intersecting with the grooves deeper than 25 μm, the direction of the grooves deeper than 25 μm is obtained. Regardless of the above, it is possible to provide a golf club head in which spin is easily applied in a desired direction by forming linear protrusions of 25 μm or less along a predetermined direction.
　かかるゴルフ用クラブヘッドであって、前記突部は、曲線状をなしている、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に、２５μｍ以下の曲線状をなす突部が設けられているので、フェース面に設けられた２５μｍ以下の突部によりボールにスピンがよりかかり易く、かつ、意匠性にも優れたゴルフ用クラブヘッドを提供することが可能である。 In this golf club head, the protrusion has a curved shape.
According to such a golf club head, since the curved surface-shaped projections of 25 μm or less are provided on the face surface, the balls are more likely to be spinned by the projections of 25 μm or less provided on the face surface. Further, it is possible to provide a golf club head excellent in design.
　かかるゴルフ用クラブヘッドであって、前記突部は複数設けられて線状に並べられている、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、フェース面に、繋がらずとも２５μｍ以下の突部が線状に並べられているゴルフ用クラブヘッドを提供することも可能である。 In this golf club head, a plurality of the protrusions are provided and arranged linearly.
According to such a golf club head, it is also possible to provide a golf club head in which projections of 25 μm or less are linearly arranged on the face surface without being connected.
　かかるゴルフ用クラブヘッドであって、前記突部の突出量は、サンドブラストにより形成される突部の突出量より大きい、ことを特徴とする。
　このようなゴルフ用クラブヘッドによれば、サンドブラストにより形成される突部の突出量より大きな２５μｍ以下の突部を備えているので、フェース面におけるサンドブラスト処理がなされた領域と打球領域とを明確に視認することが可能なゴルフ用クラブヘッドを提供することが可能である。 In this golf club head, the protrusion amount of the protrusion is larger than the protrusion amount of the protrusion formed by sandblasting.
According to such a golf club head, since the protrusion of 25 μm or less, which is larger than the protrusion of the protrusion formed by sandblasting, is provided, it is possible to clearly define the sandblasted region and the hitting region on the face surface. It is possible to provide a visually recognizable golf club head.
　また、ゴルフ用クラブヘッドの製造方法であって、フェース面を形成する部位に深さ２５μｍ以下の窪みを備えた鍛造型を準備する型準備工程と、前記鍛造型を用いて金属材料からクラブヘッドを鍛造する鍛造工程と、を有することを特徴とするゴルフ用クラブヘッドの製造方法が明らかとなる。 A method of manufacturing a golf club head, which comprises a die preparation step of preparing a forging die having a recess having a depth of 25 μm or less in a portion forming a face surface, and a club head made of a metal material using the forging die. And a forging step of forging. The method for manufacturing a golf club head is clarified.
　このようなゴルフ用クラブヘッドの製造方法によれば、フェース面に２５μｍ以下の突部を鍛造で形成するので、より短時間にてフェース面に２５μｍ以下の突部を備えたゴルフ用クラブヘッドを製造することが可能である。このため、フェース面に微少な凹凸を備えたゴルフ用クラブヘッドをより短時間で製造することが可能なゴルフ用クラブヘッドの製造方法を提供することが可能である。 According to such a method for manufacturing a golf club head, since the protrusion of 25 μm or less is formed on the face surface by forging, a golf club head having a protrusion of 25 μm or less on the face surface can be formed in a shorter time. It is possible to manufacture. Therefore, it is possible to provide a method for manufacturing a golf club head that can manufacture a golf club head having minute irregularities on the face surface in a shorter time.
　＝＝＝実施形態＝＝＝
＜＜ヘッドの構成について＞＞
　図１は、本実施形態のゴルフ用クラブヘッドの正面図である。また、図２は、図１のＡ－Ａ断面図である。
　本実施形態のゴルフ用クラブヘッドは、アイアンクラブのクラブヘッド１である。 === Embodiment ===
<<About head configuration>>
FIG. 1 is a front view of the golf club head of the present embodiment. FIG. 2 is a sectional view taken along the line AA of FIG.
The golf club head of the present embodiment is the club head 1 of an iron club.
　クラブヘッド１は、素材としてＪＩＳ規格のＳ３０Ｃ以下（例えばＳ２５Ｃ等）の低炭素鋼（いわゆる軟鉄）を用いて鍛造で形成されている。クラブヘッド１は、図１に示すように、シャフトが挿入されるホーゼル部２と、フェース面３ａを有する本体部３と、を有している。 The club head 1 is formed by forging using a low carbon steel (so-called soft iron) of JIS standard S30C or lower (for example, S25C) as a material. As shown in FIG. 1, the club head 1 has a hosel portion 2 into which a shaft is inserted and a main body portion 3 having a face surface 3a.
　フェース面３ａには、使用者がアドレスした状態でほぼ水平に配置され、フェース面３ａより窪む複数の溝３ｂと、複数の溝３ｂのうちの互いに隣り合う２本の溝３ｂ間に各々配置され、フェース面３ａよりも突出する複数の突部３ｃと、が設けられている。本実施形態のクラブヘッド１には、互いに隣り合う２本の溝３ｂ間に、溝３ｂと平行に配置され、直線状をなす３本の突部３ｃが等間隔で設けられている。図２に示すように、各溝３ｂは、フェース面３ａからの深さが２５μｍより深く設定されており、各突部３ｃのフェース面３ａからの突出量Ｈは２５μｍ以下（例えば２０μｍ）に設定されている。 The face surface 3a is arranged substantially horizontally in a state of being addressed by the user, and is arranged between a plurality of grooves 3b recessed from the face surface 3a and two adjacent grooves 3b among the plurality of grooves 3b. And a plurality of protrusions 3c protruding from the face surface 3a are provided. In the club head 1 of the present embodiment, three linear protrusions 3c that are arranged parallel to the groove 3b are provided between two adjacent grooves 3b at equal intervals. As shown in FIG. 2, the depth of each groove 3b from the face surface 3a is set deeper than 25 μm, and the protrusion amount H of each protrusion 3c from the face surface 3a is set to 25 μm or less (for example, 20 μm). Has been done.
＜＜クラブヘッド１の製造方法について＞＞
　本実施形態のクラブヘッド１の製造方法について説明する。本実施形態のクラブヘッド１は、前述したように鍛造で形成されている。
　本実施形態では、軟鉄の丸棒材を、金型を用いて鍛造によりクラブヘッド１を成型する。 <<About manufacturing method of club head 1>>
A method of manufacturing the club head 1 of this embodiment will be described. The club head 1 of this embodiment is formed by forging as described above.
In this embodiment, the club head 1 is formed by forging a soft iron round bar material using a die.
　このため、図３に示すように、まず、クラブヘッド１を鍛造により成型するための金型（不図示）を製造する（型準備工程Ｓ１）。この金型は、例えば上下に分割される上型及び下型とで構成され、上型と下型とを合わせたときに、内部にクラブヘッドの外形形状と等しい空間が形成される。上型または下型のいずれかは、フェース面を形成するフェース面形成部を有しており、フェース面形成部には、溝３ｂを形成するための溝成型突出部と、突部３ｃを形成するための線状をなす窪みが形成されている。 Therefore, as shown in FIG. 3, first, a die (not shown) for forming the club head 1 by forging is manufactured (die preparation step S1). This mold is composed of, for example, an upper mold and a lower mold which are divided into upper and lower parts, and when the upper mold and the lower mold are combined, a space equal to the outer shape of the club head is formed inside. Either the upper mold or the lower mold has a face surface forming portion that forms a face surface, and the face surface forming portion is provided with a groove forming protrusion for forming the groove 3b and a protrusion 3c. A linear recess for forming is formed.
　次に、軟鉄の丸棒材を、一定温度（例えば１０００度以上）に加熱し、下型に設けられたクラブヘッドの輪郭形状をなす凹部上に配置して、上型を上方からで降下させる(鍛造工程Ｓ２)。このとき上下の型が隙間無く閉じて金型内の空間に材料が密着されてクラブヘッド１が成形される。この鍛造工程により、クラブヘッド１の外形形状とともにフェース面３ａの溝３ｂ及び突部３ｃも同時に成型される。鍛造工程Ｓ２には、軟鉄の丸棒材を粗鍛成形加工により最終形状に近い状態に成型し、最終仕上げとして溝３ｂ及び突部３ｃを形成する精鍛成形加工を行うような複数回の成型工程が含まれていても構わない。 Next, a soft iron round bar material is heated to a constant temperature (for example, 1000° C. or higher), and is placed on the concave portion of the lower die which has the contour shape of the club head, and the upper die is lowered from above. (Forging step S2). At this time, the upper and lower molds are closed without a gap, the material is brought into close contact with the space inside the mold, and the club head 1 is molded. By this forging step, the outer shape of the club head 1 as well as the groove 3b and the protrusion 3c of the face surface 3a are simultaneously molded. In the forging step S2, a plurality of times of forming is performed such that a round bar material of soft iron is formed into a state close to a final shape by rough forging, and final fine finishing is performed to form the groove 3b and the protrusion 3c. The process may be included.
　鍛造されたクラブヘッド１は、スケール（酸化皮膜）を除去するためのショットピーニング処理を施すショットピーニング工程Ｓ３、クラブヘッド１全体にメッキ処理を施すメッキ工程Ｓ４、クラブヘッド１のフェース面３ａにおいて溝３ｂ及び突部３ｃが設けられているスコアラインエリアにサンドブラストを施すサンドブラスト工程Ｓ５などの処理工程を経てクラブヘッド１が完成する。スコアラインエリアにサンドブラストを施すことにより、メッキ後のスコアラインエリアが明確になりボールとの摩擦力が高められる。 The forged club head 1 has a shot peening step S3 for performing shot peening processing for removing scale (oxide film), a plating step S4 for performing plating processing on the entire club head 1, and a groove on the face surface 3a of the club head 1. The club head 1 is completed through processing steps such as a sandblasting step S5 of sandblasting the score line area where the 3b and the protrusion 3c are provided. By sandblasting the score line area, the score line area after plating becomes clear and the frictional force with the ball is increased.
＜＜本実施形態のクラブヘッドの効果＞＞
　本実施形態のクラブヘッド１によれば、フェース面３ａに設けられている２５μｍ以下の突部３ｃは鍛造で成型されているので、外形を形成した後にＣＮＣミルド加工により突部を形成する場合より短時間でフェース面３ａに２５μｍ以下の突部３ｃを備えたクラブヘッド１を製造することが可能となる。このため、フェース面３ａに２５μｍ以下の突部３ｃを備えつつも生産性に優れたクラブヘッド１を提供することが可能である。 <<Effects of Club Head of this Embodiment>>
According to the club head 1 of the present embodiment, the protrusion 3c of 25 μm or less provided on the face surface 3a is formed by forging, so that the protrusion is formed by CNC milling after forming the outer shape. It is possible to manufacture the club head 1 having the protrusion 3c of 25 μm or less on the face surface 3a in a short time. Therefore, it is possible to provide the club head 1 which is excellent in productivity while having the protrusion 3c of 25 μm or less on the face surface 3a.
　また、クラブヘッド１は、２５μｍ以下の突部３ｃが鍛造で形成されているので、鍛造後の表面には切削等の加工が施されていない。このため、鍛造で形成されることにより鋳造等にて製造されたクラブヘッドより高い強度を備えると共に、より強度が高い表面を加工等により除去しないので、フェース面３ａ及び２５μｍ以下の突部３ｃにより強度が高い部位を残存させることが可能である。このため、フェース面３ａ及び２５μｍ以下の突部３ｃに高い耐久性を備えることが可能である。 Also, since the club head 1 is formed by forging the protrusion 3c having a size of 25 μm or less, the surface after the forging is not subjected to processing such as cutting. Therefore, the club head has higher strength than the club head manufactured by casting or the like by being formed by forging, and the surface having higher strength is not removed by processing or the like, so that the face surface 3a and the protrusion 3c of 25 μm or less are used. It is possible to leave a portion having high strength. Therefore, it is possible to provide the face surface 3a and the protrusions 3c of 25 μm or less with high durability.
　また、フェース面３ａに２５μｍより深い溝３ｂが設けられているので、雨等によるフェース面３ａの水等を排除してボールにスピンがよりかかり易いクラブヘッドを提供することが可能である。また、２５μｍより深い溝３ｂは、鍛造で成型されているので、突部３ｃと同時に成型することが可能である。このため、更に短時間にてフェース面３ａに２５μｍより深い溝３ｂをも備えたクラブヘッド１を製造することを可能とする。このため、フェース面３ａに水等を排除可能な２５μｍより深い溝３ｂ及び２５μｍ以下の突部３ｃを備えつつも生産性に優れたクラブヘッド１を提供することが可能である。 Further, since the groove 3b deeper than 25 μm is provided in the face surface 3a, it is possible to provide a club head in which water on the face surface 3a due to rain or the like is eliminated and the ball is more likely to be spun. Further, since the groove 3b deeper than 25 μm is formed by forging, it can be formed simultaneously with the protrusion 3c. Therefore, it is possible to manufacture the club head 1 having the groove 3b deeper than 25 μm on the face surface 3a in a shorter time. Therefore, it is possible to provide the club head 1 which is excellent in productivity while having a groove 3b deeper than 25 μm capable of removing water and the like and a protrusion 3c of 25 μm or less on the face surface 3a.
　また、フェース面３ａに設けられている線状の突部３ｃにより、繋がった突部３ｃがボールと接触するので、ボールにスピンがよりかかり易いクラブヘッド１を提供することが可能である。さらに、２５μｍ以下の線状をなす突部３ｃは、２５μｍより深い溝３ｂと平行に配置されているので、２５μｍより深い溝３ｂと２５μｍ以下の線状をなす突部３ｃとが、ボールを同方向にスピンさせるべく作用する。このため、スピンが更にかかり易いクラブヘッド１を提供することが可能である。 Further, the linear protrusion 3c provided on the face surface 3a causes the connected protrusion 3c to come into contact with the ball, so that it is possible to provide the club head 1 in which the ball is more likely to be spun. Further, since the linear protrusion 3c of 25 μm or less is arranged in parallel with the groove 3b deeper than 25 μm, the groove 3b deeper than 25 μm and the linear protrusion 3c of 25 μm or less form a ball. It acts to spin in the direction. Therefore, it is possible to provide the club head 1 in which spin is more likely to occur.
　上記実施形態においては、溝３ｂ間に設ける突部３ｃを、溝３ｂと平行に配置した例について説明したが、これに限らず、図４（ａ）に示すように、突部３ｃを溝３ｂに直交、または、図４（ｂ）、図４（ｃ）に示すように、突部３ｃを溝３ｂに対して傾斜するように交差させて設けてもよい。この場合には、２５μｍより深い溝３ｂの方向に拘わらず、所定の方向に沿わせて２５μｍ以下の線状をなす突部３ｃを形成することにより、所望の方向へのスピンがかかり易いクラブヘッド１を提供することが可能である。尚、図４（ａ）～図４（ｆ）は、フェース面３ａの一部を拡大し、互いに隣り合う２本の溝３ｂ間に設けられた突部３ｃを示している。 In the above-described embodiment, an example in which the protrusion 3c provided between the grooves 3b is arranged in parallel with the groove 3b has been described, but the present invention is not limited to this, and as shown in FIG. Or, as shown in FIGS. 4(b) and 4(c), the protrusions 3c may be provided so as to intersect with the grooves 3b so as to be inclined. In this case, regardless of the direction of the groove 3b deeper than 25 μm, the linear projection 3c of 25 μm or less is formed along the predetermined direction so that spin in the desired direction is easily applied. It is possible to provide 1. 4(a) to 4(f) show a projecting portion 3c provided between two adjacent grooves 3b by enlarging a part of the face surface 3a.
　また、２５μｍ以下の突部３ｃは、必ずしも繋がっていなくともよく、例えば、図４（ｄ）に示すように、ドット状の突部３ｃが線状に並ぶ、或いは、図４（ｅ）に示すように、千鳥状に配置されていても構わない。また、２５μｍ以下の線状をなす突部３ｃは、直線状をなしていなくとも、例えば、図４（ｆ）に示すように、突部３ｃが曲線状に設けられていても構わない。この場合には、フェース面３ａに設けられた２５μｍ以下の突部３ｃによりボールにスピンがよりかかり易く、かつ、意匠性にも優れたクラブヘッド１を提供することが可能である。 Further, the protrusions 3c having a size of 25 μm or less are not necessarily connected to each other. For example, as shown in FIG. 4(d), the dot-shaped protrusions 3c are arranged in a line, or as shown in FIG. 4(e). As described above, they may be arranged in a staggered pattern. Further, the protrusion 3c having a linear shape of 25 μm or less does not have to be a linear shape, but the protrusion 3c may be provided in a curved shape as shown in FIG. 4(f), for example. In this case, it is possible to provide the club head 1 which is more likely to be spun on the ball by the protrusion 3c of 25 μm or less provided on the face surface 3a and is excellent in design.
　また、突部３ｃの突出量Ｈは、サンドブラストにより形成される突部の突出量より大きいので、フェース面３ａにおけるサンドブラスト処理がなされた領域と打球領域とを明確に視認することが可能なクラブヘッド１を提供することが可能である。 Further, since the protrusion amount H of the protrusion 3c is larger than the protrusion amount of the protrusion formed by sandblasting, it is possible to clearly visually recognize the sandblasted region and the hitting region on the face surface 3a. It is possible to provide 1.
＜＜本実施形態のクラブヘッドの製造方法による効果＞＞
　本実施形態のゴルフ用クラブヘッド１の製造方法によれば、フェース面３ａを形成する部位に深さ２５μｍ以下の窪みを備えた鍛造型を用いて、１回の鍛造工程Ｓ２にてフェース面３ａに２５μｍ以下の突部３ｃと２５μｍより深い溝３ｂとを備えたクラブヘッド１を製造することが可能である。このため、フェース面３ａに２５μｍ以下の突部３ｃと２５μｍより深い溝３ｂとを備えたクラブヘッド１をより短時間で製造することが可能なゴルフ用クラブヘッドの製造方法を提供することが可能である。 <<Effects of the club head manufacturing method of the present embodiment>>
According to the method for manufacturing the golf club head 1 of the present embodiment, the face surface 3a is formed in one forging step S2 by using the forging die having the depression having the depth of 25 μm or less in the portion forming the face surface 3a. It is possible to manufacture the club head 1 having the protrusion 3c of 25 μm or less and the groove 3b deeper than 25 μm. Therefore, it is possible to provide a method for manufacturing a golf club head which can manufacture the club head 1 having the protrusion 3c of 25 μm or less and the groove 3b deeper than 25 μm on the face surface 3a in a shorter time. Is.
　鍛造により成型された突部３ｃを備えたクラブヘッド１は、上記作用効果とは別に、高い耐久性が確認された。
　図５は、突部を鍛造により成型した場合とＣＮＣミルド加工により形成した場合との耐久性評価の結果を示す図である。 It was confirmed that the club head 1 including the protrusion 3c formed by forging has a high durability, in addition to the above-described effects.
FIG. 5 is a diagram showing the results of durability evaluation when the protrusion is formed by forging and when it is formed by CNC milling.
　この評価では、本実施形態のゴルフ用クラブヘッドの製造方法により、フェース面３ａに２５μｍ以下の突部３ｃを鍛造により成型したクラブヘッド１と、ＣＮＣミルド加工により同一形状の突部３ｃ’を形成したクラブヘッド１’とを用い、２５０球のバンカーショットを行った後の突部３ｃ、３ｃ’の状態を比較している。 In this evaluation, by the golf club head manufacturing method of the present embodiment, the club head 1 in which the projection 3c of 25 μm or less is formed by forging on the face surface 3a and the projection 3c′ having the same shape by the CNC milling are formed. The state of the protrusions 3c and 3c′ after performing a bunker shot of 250 balls is compared using the club head 1′.
　図５に示すように、ＣＮＣミルド加工により突部３ｃ’を形成したクラブヘッド１’は、２５０球のバンカーショットを行った後には、２本の溝３ｂ’間の突部３ｃ’がほとんど摩耗し、突部３ｃ’がなく平坦な部位Ａが見られるが、鍛造により突部３ｃを成型したクラブヘッド１は、２５０球のバンカーショットを行った後にも３本の突部３ｃが残存する部位Ｂが明確に確認される。このように、鍛造により突部３ｃを成型した上記実施形態のクラブヘッド１の方が、ＣＮＣミルド加工により突部３ｃ’を形成したクラブヘッド１’よりも突部３ｃの耐久性が高いことを確認することができた。 As shown in FIG. 5, in the club head 1′ having the protrusion 3c′ formed by the CNC milling, the protrusion 3c′ between the two grooves 3b′ is almost worn after a 250-ball bunker shot. However, the flat portion A without the protrusions 3c' can be seen, but the club head 1 in which the protrusions 3c are formed by forging has a portion where the three protrusions 3c remain even after performing a bunker shot of 250 balls. B is clearly confirmed. As described above, the club head 1 of the above embodiment in which the protrusion 3c is formed by forging has a higher durability of the protrusion 3c than the club head 1′ in which the protrusion 3c′ is formed by CNC milling. I was able to confirm.
＝＝＝その他の実施形態＝＝＝
　上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明は、その趣旨を逸脱することなく、変更、改良され得ると共に、本発明にはその等価物が含まれることはいうまでもない。 === Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof and that the present invention includes equivalents thereof.
　上記実施形態においては、互いに隣り合う溝３ｂ間に３本の突部３ｃを設けた例について説明したが、これに限らず、互いに隣り合う溝３ｂ間に２本以下、または，４本以上の突部３ｃを有していても構わない。
　本実施形態においては、互いに隣り合う溝３ｂ間に突部３ｃを設けた例について説明したが、突部３ｃの間は、窪みとなるので、フェース面に突部３ｃを設けることにより、互いに隣り合う溝３ｂ間に微少な凹凸を形成することが可能である。
　上記実施形態においては、材料として軟鉄を用いた例について説明したが、軟鉄に限らず金属材料であれば構わない。 In the above embodiment, the example in which the three protrusions 3c are provided between the grooves 3b adjacent to each other has been described. However, the present invention is not limited to this, and two or less or four or more between the adjacent grooves 3b are provided. You may have the protrusion part 3c.
In the present embodiment, the example in which the protrusions 3c are provided between the grooves 3b adjacent to each other has been described. However, since the protrusions 3c are recesses, the protrusions 3c are provided on the face surface so that they are adjacent to each other. It is possible to form minute unevenness between the matching grooves 3b.
In the above-described embodiment, an example in which soft iron is used as the material has been described, but the material is not limited to soft iron and may be any metal material.
　１　クラブヘッド、２　ホーゼル部、３　本体部、
３ａ　フェース面、３ｂ　溝、３ｃ　突部、
　Ｈ　突出量 1 club head, 2 hosel part, 3 body part,
3a face surface, 3b groove, 3c protrusion,
H protrusion amount

Claims (9)

  1. 　ゴルフ用クラブヘッドであって、
    　フェース面に、鍛造で形成された２５μｍ以下の突部を有している、
    ことを特徴とするゴルフ用クラブヘッド。     A golf club head,
    The face has a protrusion of 25 μm or less formed by forging,
    A golf club head characterized by the above.
  2. 　請求項１に記載のゴルフ用クラブヘッドであって、
    　前記フェース面に、鍛造で形成された深さが２５μｍより深い溝を有している、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 1, wherein
    The face surface has a groove formed by forging with a depth of more than 25 μm,
    A golf club head characterized by the above.
  3. 　請求項１または２に記載のゴルフ用クラブヘッドであって、
    　前記突部は、線状をなしている、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 1 or 2, wherein
    The protrusion has a linear shape,
    A golf club head characterized by the above.
  4. 　請求項２に記載のゴルフ用クラブヘッドであって、
    　前記突部は、線状をなし、
    　前記溝に対して平行に設けられている、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 2, wherein
    The protrusion has a linear shape,
    Provided parallel to the groove,
    A golf club head characterized by the above.
  5. 　請求項２に記載のゴルフ用クラブヘッドであって、
    　前記突部は、線状をなし、
    　前記溝に対して交差する方向に設けられている、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 2, wherein
    The protrusion has a linear shape,
    Provided in a direction intersecting with the groove,
    A golf club head characterized by the above.
  6. 　請求項１または２に記載のゴルフ用クラブヘッドであって、
    　前記突部は、曲線状をなしている、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 1 or 2, wherein
    The protrusion has a curved shape,
    A golf club head characterized by the above.
  7. 　請求項１または２に記載のゴルフ用クラブヘッドであって、
    　前記突部は複数設けられて線状に並べられている、
    ことを特徴とするゴルフ用クラブヘッド。     The golf club head according to claim 1 or 2, wherein
    A plurality of the protrusions are provided and arranged linearly,
    A golf club head characterized by the above.
  8. 　請求項１乃至７のいずれかに記載のゴルフ用クラブヘッドであって、
    　前記突部の突出量は、サンドブラストにより形成される突部の突出量より大きい、
    ことを特徴とするゴルフ用クラブヘッド。     A golf club head according to any one of claims 1 to 7, wherein:
    The protrusion amount of the protrusion is larger than the protrusion amount of the protrusion formed by sandblasting,
    A golf club head characterized by the above.
  9. 　ゴルフ用クラブヘッドの製造方法であって、
    　フェース面を形成する部位に深さ２５μｍ以下の窪みを備えた鍛造型を準備する型準備工程と、
    　前記鍛造型を用いて加熱した金属材料を加圧してクラブヘッドを形成する鍛造工程と、
    を有することを特徴とするゴルフ用クラブヘッドの製造方法。     A method of manufacturing a golf club head, comprising:
    A die preparing step of preparing a forging die having a recess having a depth of 25 μm or less in a portion forming a face surface;
    A forging step of forming a club head by pressurizing a metal material heated using the forging die;
    A method for manufacturing a golf club head, comprising:
PCT/JP2019/043960 2018-12-03 2019-11-08 Golf club head and method for producing golf club head WO2020116093A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09271546A (en) * 1996-04-04 1997-10-21 Takefu Tokushu Kozai Kk Golf club head with toughened hard face and manufacture thereof
JP2013176510A (en) * 2012-02-29 2013-09-09 Dunlop Sports Co Ltd Golf club head
JP2013230280A (en) * 2012-04-30 2013-11-14 Dunlop Sports Co Ltd Golf club head
US20170065857A1 (en) * 2015-09-04 2017-03-09 Callaway Golf Company Golf club head manufacturing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4917414B2 (en) * 2006-11-28 2012-04-18 ブリヂストンスポーツ株式会社 Golf club head
JP5172587B2 (en) * 2008-10-08 2013-03-27 ブリヂストンスポーツ株式会社 Golf club head
JP5349277B2 (en) * 2009-12-18 2013-11-20 ブリヂストンスポーツ株式会社 Golf club head and manufacturing method thereof
JP5866969B2 (en) * 2011-10-27 2016-02-24 ブリヂストンスポーツ株式会社 Golf club head and manufacturing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09271546A (en) * 1996-04-04 1997-10-21 Takefu Tokushu Kozai Kk Golf club head with toughened hard face and manufacture thereof
JP2013176510A (en) * 2012-02-29 2013-09-09 Dunlop Sports Co Ltd Golf club head
JP2013230280A (en) * 2012-04-30 2013-11-14 Dunlop Sports Co Ltd Golf club head
US20170065857A1 (en) * 2015-09-04 2017-03-09 Callaway Golf Company Golf club head manufacturing method

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