JP2002003969A - Wood golf club - Google Patents

Wood golf club

Info

Publication number
JP2002003969A
JP2002003969A JP2001133008A JP2001133008A JP2002003969A JP 2002003969 A JP2002003969 A JP 2002003969A JP 2001133008 A JP2001133008 A JP 2001133008A JP 2001133008 A JP2001133008 A JP 2001133008A JP 2002003969 A JP2002003969 A JP 2002003969A
Authority
JP
Japan
Prior art keywords
head
golf club
aging
cold
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001133008A
Other languages
Japanese (ja)
Inventor
Kenji Kobayashi
健治 小林
Masae Tsurumaki
政衛 鶴巻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endo Manufacturing Co Ltd
Original Assignee
Endo Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endo Manufacturing Co Ltd filed Critical Endo Manufacturing Co Ltd
Priority to JP2001133008A priority Critical patent/JP2002003969A/en
Publication of JP2002003969A publication Critical patent/JP2002003969A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a wood club head enabling to thin the material of the head and to achieve a enlargement of the head while suppressing the total weight. SOLUTION: As the material for a wood club head 1, the material obtained by directly subjecting a cold worked material of a βsingle phase composed of a β type titanium alloy to aging is used. This material desirably has a structure worked at a cold working degree of >=15% as well. The aging imparts the improvement of its proof stress and surface hardness. In the case the cold worked material is directly subjected to aging without performing solution treatment, long heat treating time is not required, and the production cost can be suppressed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ウッドゴルフクラ
ブに係わり、特にヘッドの材料に関する。
[0001] 1. Field of the Invention [0002] The present invention relates to a wood golf club, and more particularly to a head material.

【0002】[0002]

【発明が解決しようとする課題】ゴルフクラブにおい
て、スイートエリア、すなわちフェースにおいて打撃し
たボールが比較的真っ直ぐによく飛ぶ領域を広くするた
めの手段の一つはヘッド自体を大型化することである。
近年、ウッドクラブにおいて体積が300ccを越えるヘッ
ドも登場している。ヘッドを大型化しても、使い勝手を
確保するにはヘッドの総重量は抑えなければならないた
め、ヘッドを中空にし、かつその外殻を薄肉化せざるを
得ない。しかし、外殻を薄肉化すればヘッドの強度が弱
くなり、ボールの打撃時の衝撃などによりヘッドが破損
するおそれがある。特に、ボールが打撃されるフェース
部は強度を確保する必要があり、従来、フェース部の板
厚は3.0mm程度が下限の限界になっている。
In a golf club, one of means for widening a sweet area, that is, an area where a ball hit in a face flies relatively straight and well, is to enlarge the head itself.
In recent years, wood clubs with heads exceeding 300 cc have appeared. Even when the size of the head is increased, the total weight of the head must be reduced to ensure ease of use. Therefore, the head must be hollow and its outer shell must be thinned. However, if the outer shell is made thinner, the strength of the head becomes weaker, and the head may be damaged by impact at the time of hitting the ball. In particular, it is necessary to ensure the strength of the face portion on which the ball is hit, and conventionally, the lower limit of the thickness of the face portion is about 3.0 mm.

【0003】また、ゴルフクラブヘッドは、近年、チタ
ンやチタン合金を素材とするヘッドが主流になってきて
いる。チタン合金は、ステンレス鋼に比べ軽く、しかも
強度が高いため、設計の自由度が増し、一般にはステン
レス鋼製ヘッドに比べてより大きなヘッドを製作するこ
とが可能である。これにより、前述のようにスイートエ
リアが広がり、安定した打球が得られるようになる。
In recent years, golf club heads made of titanium or a titanium alloy as a raw material have become mainstream. Titanium alloys are lighter and have higher strength than stainless steel, so the degree of freedom in design is increased, and it is generally possible to manufacture a larger head than a stainless steel head. As a result, the sweet area is expanded as described above, and a stable hit ball can be obtained.

【0004】従来、チタン合金の中でゴルフクラブヘッ
ドの材料として使用されているものとしては、Ti−6
Al−4V合金およびTi−4.5Al−3V−2Fe
−2Mo合金等のα+β型合金、Ti−15V−3Cr
−3Sn−3Al合金等のβ型合金などがある。Ti−
6Al−4V合金は、チタン合金の中で様々な分野で最
も多く使用されている。しかし、この合金は、冷間加工
できないため、ヘッド用材料として一般に要求される厚
さ1〜5mmの板を製造するには、非常に多くの労力を要
し、多大のコストを必要とする。そのため、例えば特開
平3−230845号公報に記載されているように、鋳
造によりTi−6Al−4V合金製ヘッドを製作してい
る。しかし、鋳造でも、チタンは酸化しやすいため大気
中で鋳造を行うことができず、さらに鋳型と反応しやす
いため非常に高度な技術を必要とし、結果的にコストが
高くつく。それに加えて、鋳造品は、圧延上がり材に比
べ組織コントロールができないため、強度的にも弱くな
る欠点を有する。これに対し、Ti−4.5Al−3V
−2Fe−2Mo合金は、超塑性加工ができるため、鋳
造品より高強度を得やすい。しかし、超塑性加工を行う
場合でも、特殊な装置を必要とし、さらに多くの時間を
要するため大量生産には不向きである。こうした中で、
Ti−15Mo−5Zr−3Al、Ti−15V−3C
r−3Sn−3Al等の冷間加工性良好なβ型合金が多
く使用されるようになってきている。これらの合金は、
冷間加工により所定の厚みとし、冷間加工の歪みをとる
目的と溶体化処理をする目的とで熱処理された後、ゴル
フクラブヘッドに組み立てられる。
[0004] Conventional titanium alloys used as a material for golf club heads include Ti-6.
Al-4V alloy and Ti-4.5Al-3V-2Fe
Α + β type alloy such as -2Mo alloy, Ti-15V-3Cr
Β-type alloys such as a -3Sn-3Al alloy. Ti-
6Al-4V alloy is most frequently used in various fields among titanium alloys. However, since this alloy cannot be cold-worked, manufacturing a plate having a thickness of 1 to 5 mm, which is generally required as a head material, requires a great deal of labor and a great deal of cost. Therefore, as described in, for example, JP-A-3-230845, a head made of a Ti-6Al-4V alloy is manufactured by casting. However, even in casting, titanium cannot easily be cast in the atmosphere because it is easily oxidized, and furthermore, it easily reacts with the mold, so that a very advanced technique is required, resulting in high costs. In addition, the cast product has a disadvantage in that the structure cannot be controlled as compared with the rolled material, so that the strength is weak. On the other hand, Ti-4.5Al-3V
Since the -2Fe-2Mo alloy can be subjected to superplastic working, it is easier to obtain higher strength than a cast product. However, even when performing superplastic working, a special device is required, and more time is required, which is not suitable for mass production. Under these circumstances,
Ti-15Mo-5Zr-3Al, Ti-15V-3C
β-type alloys having good cold workability such as r-3Sn-3Al have been increasingly used. These alloys
After being cold-worked to a predetermined thickness and subjected to a heat treatment for the purpose of removing the strain of the cold work and for the purpose of solution treatment, it is assembled into a golf club head.

【0005】しかし、近年、より遠くへボールを飛ばす
ため、フェースのいっそうの薄肉化が求められるように
なってきたが、従来の工程により製造されたβ型合金の
ゴルフクラブヘッド用材料では強度が不十分で、ボール
の打撃時の衝撃により割れが発生するという問題が生じ
た。3mm以上の従来の材厚ならば強度的に耐えられたの
に対して、それ以下の薄肉化により強度不足になったこ
とが割れ発生の原因と考えられる。
In recent years, however, it has been required to further reduce the thickness of the face in order to make the ball fly farther. However, a β-type alloy golf club head material manufactured by a conventional process has a high strength. Inadequately, there is a problem that the ball is cracked by the impact at the time of hitting. While the conventional material thickness of 3 mm or more was able to withstand the strength, it is considered that the cause of cracking is that the strength was insufficient due to the reduction in thickness below that.

【0006】本発明は、このような問題点を解決しよう
とするもので、耐久性に優れたヘッドを有するゴルフク
ラブを提供することを目的とする。
An object of the present invention is to solve such a problem, and an object of the present invention is to provide a golf club having a head having excellent durability.

【0007】[0007]

【課題を解決するための手段】請求項1の発明のウッド
ゴルフクラブは、前記目的を達成するために、金属製で
中空のウッドゴルフクラブであって、冷間加工度が15
%以上の加工組織であるβ型チタン合金をヘッドのフェ
ース部の材料としたものである。
According to a first aspect of the present invention, there is provided a wood golf club which is a hollow metal golf club made of metal and has a cold working degree of 15%.
% Or more is used as the material of the face of the head.

【0008】冷間加工度を大きくすることにより、冷間
加工で生じた加工硬化を残すことができ、材料の耐力、
表面硬さが向上する。
[0008] By increasing the degree of cold work, the work hardening caused by cold work can be left, and the proof stress of the material,
Surface hardness is improved.

【0009】請求項2の発明のウッドゴルフクラブは、
前記目的を達成するために、金属製で中空のウッドゴル
フクラブであって、β型チタン合金からなる冷間加工材
を直接時効した材料をヘッドのフェース部の材料とした
ものである。
The wood golf club according to the invention of claim 2 is
In order to achieve the above object, a hollow wood golf club made of metal, wherein a material obtained by directly aging a cold-worked material made of a β-type titanium alloy is used as a material for a face portion of a head.

【0010】時効により、材料の耐力、表面硬さが向上
し、フェース部の板厚を薄くすることも可能になる。ま
た、冷間加工材を溶体化処理なしで直接時効すれば、冷
間加工による加工硬化の効果と時効析出がより速く進行
する効果とにより、十分な強度を得るのに長い熱処理時
間が必要でなく、製造コストが抑えられる。
[0010] By aging, the proof stress and surface hardness of the material are improved, and the thickness of the face portion can be reduced. In addition, if the cold-worked material is directly aged without solution treatment, a long heat treatment time is required to obtain sufficient strength due to the effect of work hardening by cold working and the effect that aging precipitation proceeds faster. Therefore, the manufacturing cost can be reduced.

【0011】請求項3の発明のウッドゴルフクラブは、
前記目的を達成するために、β型チタン合金でβ単一相
からなる冷間加工材を直接時効した材料をヘッドのフェ
ース部の材料としたものである。
[0011] The wood golf club of the invention according to claim 3 is:
In order to achieve the above-mentioned object, a material obtained by directly aging a cold worked material composed of a β single phase with a β type titanium alloy is used as a material for the face portion of the head.

【0012】時効により、材料の耐力、表面硬さが向上
し、フェース部の板厚を薄くすることも可能になる。ま
た、冷間加工材を溶体化処理なしで直接時効すれば、十
分な強度を得るのに長い熱処理時間が必要でなく、製造
コストが抑えられる。すなわち、β型合金は析出硬化型
の合金であり、時効処理を行うことでβ相内にα相を析
出させ、強度を得るものであるが、冷間圧延およびプレ
スなどによってヘッドを構成する部材を加工するときに
生じる歪みを溶体化処理により解放することなく直接時
効処理すると、溶体化処理上がり材を時効した場合と比
較して、α相の析出をより促進させることが可能になる
とともに、冷間加工で生じた加工硬化を溶体化処理で取
り去ることなく、低温での時効のみの低い温度で加工硬
化を残すことが可能になる。これらのことにより、β相
の未再結晶状態よりα相を析出させると、短時間で高い
強度を得ることができる。さらに、β単一相であれば、
二層組織や脆い組織がないことにより、冷間あるいは温
間プレス加工時に割れが生じない。
By aging, the proof stress and surface hardness of the material are improved, and the thickness of the face portion can be reduced. Further, if the cold-worked material is directly aged without solution treatment, a long heat treatment time is not required to obtain sufficient strength, and the production cost can be reduced. In other words, the β-type alloy is a precipitation hardening type alloy, and the α phase is precipitated in the β phase by performing aging treatment to obtain strength. When the aging treatment is performed directly without releasing the strain generated during processing by solution treatment, the precipitation of the α phase can be further promoted, as compared with the case where the solution-treated material is aged. Without removing the work hardening generated by the cold working by the solution treatment, it is possible to leave the work hardening at a low temperature that is only aged at a low temperature. For these reasons, when the α phase is precipitated from the unrecrystallized state of the β phase, high strength can be obtained in a short time. Furthermore, if it is β single phase,
Since there is no two-layer structure or brittle structure, cracking does not occur during cold or warm pressing.

【0013】請求項4の発明は、請求項2または請求項
3の発明のウッドゴルフクラブにおいて、前記材料は、
熱間圧延でβ単一相に仕上げ、冷間加工後直接時効した
ものである。
According to a fourth aspect of the present invention, in the wood golf club of the second or third aspect, the material is:
Finished to a single β phase by hot rolling and directly aged after cold working.

【0014】これにより、低コストで製造できる。Thus, it can be manufactured at low cost.

【0015】請求項5の発明のウッドゴルフクラブは、
前記目的を達成するために、金属製で中空のウッドゴル
フクラブであって、β型チタン合金でβ単一相からなり
冷間加工度が15%以上の加工組織である冷間加工材を
直接時効した材料をヘッドのフェース部の材料としたも
のである。
The wood golf club of the invention according to claim 5 is
In order to achieve the above object, a hollow metal golf club made of a metal, which is a β-type titanium alloy, is made of a β single phase, and has a cold working material having a working structure of 15% or more of a cold worked material is directly used. The aged material is used as the material for the face of the head.

【0016】冷間加工度を15%以上にすることによ
り、冷間加工後直接時効することの効果が十分達成でき
る。
By setting the degree of cold working to 15% or more, the effect of directly aging after cold working can be sufficiently achieved.

【0017】[0017]

【発明の実施形態】以下、本発明のゴルフクラブの実施
形態について、図面を参照しながら説明する。図1およ
び図2は、本発明が適用されるゴルフクラブの一例を示
している。このゴルフクラブはウッドクラブであり、ヘ
ッド1が金属製で中空のいわゆるメタルウッドである。
そのヘッド1は、前面がボールの打撃面をなすフェース
2、後側がバック3、下側がソール4、上側がクラウン
5、左右方向一側がトウ6、他側がヒール7をなしてい
る。このヒール7の上側にはネック8が形成されてお
り、このネック8からホーゼル9が上方へ突出してい
る。このホーゼル9は、シャフト10が接続される接続部
をなすものである。そして、ヘッド1は、内部が中空部
11になっているが、この中空部11にはポリウレタンなど
の充填材を充填してもよい。また、フェース2には複数
の凹溝状のスコアーライン12が形成されている。
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an example of a golf club to which the present invention is applied. This golf club is a wood club, and is a so-called metal wood in which the head 1 is made of metal and hollow.
The head 1 has a face 2 on the front surface forming a ball hitting surface, a back 3 on the rear side, a sole 4 on the lower side, a crown 5 on the upper side, a toe 6 on one side in the left-right direction, and a heel 7 on the other side. A neck 8 is formed above the heel 7, and a hosel 9 projects upward from the neck 8. The hosel 9 forms a connection portion to which the shaft 10 is connected. The head 1 has a hollow portion inside.
11, the hollow portion 11 may be filled with a filler such as polyurethane. The face 2 is formed with a plurality of concave score lines 12.

【0018】そして、前記ヘッド1は、例えば3分割さ
れて構成されている。すなわち、ヘッド1の外殻部は、
それぞれ板状のフェース部材16とボディ部材17とクラウ
ン部材18からなっている。フェース部材16はフェース2
を形成するものであり、クラウン部材18はクラウン5を
形成するものであり、ボディ部材17はそれ以外のバック
3やソール4を形成するものである。そして、これらフ
ェース部材16、ボディ部材17およびクラウン部材18は、
溶接などの手段により互いに接合されている。なお、ヘ
ッド1の分割は上述のものに限るものではなく、フェー
ス2側とバック3側とに2分割してもよいし、4分割以
上に分割するなどしてもよい。
The head 1 is, for example, divided into three parts. That is, the outer shell of the head 1
Each comprises a plate-like face member 16, a body member 17, and a crown member 18. Face member 16 is face 2
The crown member 18 forms the crown 5 and the body member 17 forms the other back 3 and sole 4. The face member 16, the body member 17 and the crown member 18
They are joined together by means such as welding. It should be noted that the division of the head 1 is not limited to the above-described one, and the head 1 may be divided into two on the face 2 side and the back 3 side, or may be divided into four or more divisions.

【0019】前述のように従来の材料を用いた場合、ヘ
ッド1を薄肉化すると打撃時の衝撃により割れが生じや
すくなるが、割れ部を調査したところ、溶接部等の強度
的に不十分と考えられた所からの割れではなく、スコア
ーライン12底部より亀裂が生じ、それがフェース全体2
に広がり割れとなることが見出された。図3には、スコ
アーライン12とその割れ21の発生状況を示してある。さ
らに、亀裂が発生する傾向は、フェース2の中心のスコ
アーライン12底部に主に見られることも判明した。これ
を材料強度的に分析したところ、ボールの打撃時に約1
トン以上の荷重が加わり、これによってフェース全体2
が強度不足によりヘッド1内部へ湾曲し、このとき発生
する応力がスコアーライン21底部に集中し、これにより
亀裂が発生進展することが判明した。そして、この現象
を防ぐには、材料の面では、耐力の向上および表面硬さ
の向上が必要であることがわかった。耐力の向上は、薄
くなったフェース2部の強度不足を補い、ボールの打撃
時のフェース2のヘッド1内への湾曲を防ぐ。表面硬さ
の向上は、被打球部の局所的な変形を防ぎ、これによる
被打球部近傍のスコアーライン12底部への応力集中をよ
り周辺に分散させる効果がある。さらに、好都合なこと
に脆化しない範囲内での適正な耐力の向上は、材料自身
の疲労特性も向上させ、割れ21防止に効果がある。
As described above, when the conventional material is used, if the thickness of the head 1 is reduced, cracks are likely to occur due to the impact at the time of hitting. Instead of cracking from where it was supposed, a crack occurs at the bottom of the score line 12, which is the whole face 2
And it was found to be cracked. FIG. 3 shows the state of occurrence of the score line 12 and its crack 21. Further, it was also found that the tendency to crack was mainly observed at the bottom of the score line 12 at the center of the face 2. This was analyzed in terms of material strength.
Tonnes or more of load is applied to the entire face 2
Was bent into the inside of the head 1 due to insufficient strength, and the stress generated at this time was concentrated on the bottom of the score line 21, and it was found that a crack was generated and propagated. It has been found that in order to prevent this phenomenon, it is necessary to improve the proof stress and the surface hardness of the material. The improvement in the proof stress compensates for the insufficient strength of the thinned face 2 and prevents the face 2 from bending into the head 1 when the ball is hit. The improvement of the surface hardness has the effect of preventing local deformation of the hit ball portion and dispersing the stress concentration on the bottom of the score line 12 near the hit ball portion to the periphery. Further, conveniently, improvement of the appropriate proof stress within a range not causing embrittlement also improves the fatigue characteristics of the material itself, and is effective in preventing crack 21.

【0020】前記材料面での解析結果を、材料特性に反
映させるため、種々の実験を繰り返した結果、従来の製
造装置を有効に利用しながら目的を達成するためには、
フェース2部に最適な時効処理を施し、割れが発生しな
い耐力および表面硬さを得なければならないことがわか
り、薄肉なフェース2部の最適材料特性を把握すること
ができた。反面、従来よりも高い耐力を得るための時効
条件は、非常に長い熱処理時間を必要とし、製造コスト
を大幅に上昇させるという新たな問題が生じた。この新
たな問題を解決するために検討した結果、製品厚まで加
工し終わったゴルフクラブヘッドを溶体化処理すること
なく直接時効することで、上記問題を解決でき、耐久性
に優れたチタン合金製のゴルフクラブヘッドを得ること
ができた。
As a result of repeating various experiments in order to reflect the analysis results on the material in the material characteristics, it is necessary to achieve the object while effectively using the conventional manufacturing apparatus.
It was found that the optimum aging treatment had to be applied to the face 2 to obtain the proof stress and surface hardness that would not cause cracking, and the optimum material properties of the thin face 2 could be grasped. On the other hand, the aging condition for obtaining a higher yield strength than the conventional one requires an extremely long heat treatment time, which causes a new problem of significantly increasing the manufacturing cost. As a result of studying to solve this new problem, by directly aging the golf club head that has been processed to the product thickness without solution treatment, the above problem can be solved, and a titanium alloy made with excellent durability Golf club head was obtained.

【0021】すなわち、本発明のゴルフクラブは、ヘッ
ド1を構成する部材16,17,18、特にフェース部材16の
材料として、冷間加工材、特にβ型チタン合金でβ単一
相からなる冷間加工材を直接時効した材料、さらには、
冷間加工度が15%以上の加工組織である金属材料を用
いたものである。
That is, in the golf club of the present invention, as a material of the members 16, 17, 18, particularly the face member 16, which constitute the head 1, a cold work material, in particular, a β-type titanium alloy made of Aged material directly from cold worked material,
A metal material having a working structure with a cold work degree of 15% or more is used.

【0022】前述のように、従来β型チタン合金は基本
的に再結晶状態からの時効組織で、ゴルフクラブヘッド
のフェース材料に用いられている。しかし、この従来法
では比較的均一組織である程度の強度を得るためには比
較的高い温度での長時間時効(例えば500℃で8時間
程度)を施さざるを得ない(全時効)。400〜450
℃程度の温度で数10時間時効することにより、さらに
均一な時効組織を得ることも可能であるが、均一組織が
得られた時点では極めて硬度が高くなりすぎ、均一組織
であっても、延性、なかんずく、切り欠き存在の下での
靭性は甚だ劣しい材質となる。
As described above, conventionally, β-type titanium alloy has an aging structure basically from a recrystallized state, and is used as a face material of a golf club head. However, in this conventional method, in order to obtain a certain degree of strength with a relatively uniform structure, long-term aging at a relatively high temperature (for example, about 8 hours at 500 ° C.) must be performed (all aging). 400-450
It is possible to obtain a more uniform aged structure by aging at a temperature of about 10 ° C. for several tens of hours. However, when a uniform structure is obtained, the hardness becomes extremely high. Above all, the toughness in the presence of notches is a very poor material.

【0023】また、低温時効であれ高温時効であれ、粒
界へのα相の優先析出は不可避であり、薄肉化に十分な
強靭性は得られず、耐久性を阻害する。
In addition, regardless of the low-temperature aging or high-temperature aging, preferential precipitation of the α phase at the grain boundaries is inevitable, and sufficient toughness for thinning cannot be obtained, which impairs durability.

【0024】これに対し、未再結晶組織よりα相を析出
させると粒界へのα相の優先析出は抑制され、粒界およ
び粒内がほぼ同程度に速やかにα相が析出するようにな
り、この全域に渡ってのα相析出の促進により、完全時
効状態になるまで時効させなくても均一な組織が得ら
れ、α相を完全に析出させ切らずともある程度の強度に
到達させられることにより、高延性、高靭性が維持され
る。この効果は冷間加工度数%(スキンパス圧延程度)
でも発揮されるが、より好ましくは、15%以上の加工
度で耐久性は格段に向上する。
On the other hand, when the α phase is precipitated from the unrecrystallized structure, the preferential precipitation of the α phase at the grain boundaries is suppressed, and the α phase is precipitated almost as quickly as at the grain boundaries and within the grains. By promoting the precipitation of the α phase over the entire region, a uniform structure can be obtained without aging until a completely aged state is reached, and a certain degree of strength can be reached without completely precipitating the α phase. Thereby, high ductility and high toughness are maintained. This effect is achieved by a cold working degree of several percent (skin pass rolling).
However, more preferably, the durability is significantly improved at a working ratio of 15% or more.

【0025】さらに、従来から知られているようにβ相
におけるβ粒径を細かくしておけば、特に延性において
良好な特性が得られる。
Furthermore, if the β-particle size in the β-phase is made fine as conventionally known, good characteristics, particularly in ductility, can be obtained.

【0026】本発明で、時効前のチタン合金組織をβ単
一相としたのは、α+βの二相組織やω相等の脆い組織
が存在すると、ヘッド1を構成する部材へ冷間または温
間プレス加工する際割れが生じるためである。
In the present invention, the titanium alloy structure before aging is made into a β single phase because, if a brittle structure such as α + β two phase structure or ω phase is present, the member constituting the head 1 is cold or warm. This is because cracks occur during press working.

【0027】また、時効前の材料を冷間加工組織とした
のは、最終のヘッド1の時効時に十分な強度を得るため
である。冷間加工組織ではなく溶体化処理をした組織で
は、短時間の時効では十分な強度が得られず、ボールの
打撃時の衝撃により割れなどが生じるおそれがある。さ
らに、冷間加工度を15%以上にすることにより、この
効果が十分達成できる。
The reason why the material before aging is a cold worked structure is to obtain a sufficient strength at the time of aging of the final head 1. In a structure that has been subjected to a solution treatment instead of a cold-worked structure, sufficient strength cannot be obtained by aging for a short time, and there is a possibility that a crack or the like may occur due to an impact when the ball is hit. Further, by setting the degree of cold working to 15% or more, this effect can be sufficiently achieved.

【0028】さらに、ヘッド1の熱処理において溶体化
処理することなく直接時効処理するのは、ヘッド1を直
接時効することによってより高い強度を得るためであ
る。
Further, the direct aging treatment without solution treatment in the heat treatment of the head 1 is for obtaining a higher strength by directly aging the head 1.

【0029】このように冷間加工組織を有する材料でヘ
ッド1を作製し、溶体化処理することなく時効すること
で高い強度を得られる。β型合金は析出硬化型の合金で
あり、時効処理を行うことでβ相内にα相を析出させ、
強度を得るものであるが、冷間圧延およびプレスなどに
よってヘッド1を構成する部材を加工するときに生じる
歪みを溶体化処理により解放することなく直接時効処理
すると、溶体化処理上がり材を時効した場合と比較し
て、α相の析出をより促進させることが可能になるとと
もに、冷間加工で生じた加工硬化を溶体化処理で取り去
ることなく、低温での時効のみの低い温度で加工硬化を
残すことが可能になる。そして、この2つの効果によ
り、短時間で従来よりも高い強度を得ることができる。
As described above, a high strength can be obtained by preparing the head 1 from a material having a cold work structure and aging without performing a solution treatment. The β-type alloy is a precipitation hardening type alloy, and the aging treatment is performed to precipitate the α phase in the β phase,
Although it is intended to obtain strength, when the aging treatment is performed directly without releasing the strain generated when processing the members constituting the head 1 by cold rolling and pressing without being released by the solution treatment, the material after the solution treatment is aged. Compared to the case, it is possible to promote the precipitation of α phase more, and work hardening at low temperature with only aging at low temperature without removing work hardening generated by cold working by solution treatment. It is possible to leave. And, by these two effects, it is possible to obtain a higher strength than before in a short time.

【0030】従来製法による材料でも高い強度を得るこ
とはできるが、そのためには時効処理を長時間行うこと
が必要になり、製造コストの増加や生産性の低下などの
不具合が生じる。したがって、これは課題を解決するた
めの現実的な対応とはなりにくい。
Although high strength can be obtained with a material produced by a conventional production method, it is necessary to perform aging treatment for a long time, which causes problems such as an increase in production cost and a decrease in productivity. Therefore, this is unlikely to be a realistic response for solving the problem.

【0031】本発明のゴルフクラブの製造方法の一例に
おいては、所要組成の合金材料からアーク溶接によりイ
ンゴットを作製後、熱間圧延および冷間圧延を行うこと
により所定板厚の板材を作成し、この板材を冷間プレス
あるいは温間プレスして必要な形状を備えた部材(前記
フェース部材16、ボディ部材17およびクラウン部材18な
ど)を作製し、それらを溶接により接合させてヘッド1
を作製し、得られたヘッド1を時効処理し、これにより
得られたヘッド1をシャフト10に組み付けて組み立てる
ことによりゴルフクラブが作製される。
In one example of the method for manufacturing a golf club of the present invention, an ingot is produced from an alloy material having a required composition by arc welding, and then hot-rolled and cold-rolled to produce a sheet having a predetermined thickness. This plate material is cold-pressed or warm-pressed to produce members having the required shape (such as the face member 16, the body member 17 and the crown member 18), and these are joined by welding to form the head 1
Is manufactured, the obtained head 1 is subjected to an aging treatment, and the obtained head 1 is assembled to a shaft 10 to assemble the golf club.

【0032】ただし、本発明の有効な実施のためには、
まず熱間圧延に注意を払う必要がある。熱間圧延で、β
相以外の相が析出する場合には、その後溶体化処理する
必要がある。これは、その後の冷間加工を問題なく行う
ために必要である。しかし、可能ならば熱間圧延でβ単
一相に仕上がるように温度制御をすることにより、低コ
ストで製造できる。それに加えて、熱間圧延時に歪みを
発生するようにすることにより、その後の冷間加工を十
分行わなくても、加工硬化が十分に得られ、さらに低コ
ストで製造できる。また、冷間加工にも注意を要する。
従来の方法では、最終加工後溶体化処理するため、そこ
で熱を加え同時に形状を矯正することも可能である。一
方、本発明において冷間加工後溶体化処理を行わない実
施形態では、このような矯正が行われないため、冷間加
工で十分な形状を予め得る必要がある。
However, for effective implementation of the present invention,
First, attention must be paid to hot rolling. Hot rolling, β
When a phase other than the phase is precipitated, it is necessary to perform a solution treatment thereafter. This is necessary so that subsequent cold working can be performed without any problem. However, if possible, by controlling the temperature so as to obtain a β single phase by hot rolling, it is possible to produce at low cost. In addition, by causing distortion during hot rolling, sufficient work hardening can be obtained even if subsequent cold working is not sufficiently performed, and the production can be performed at lower cost. Attention must also be paid to cold working.
In the conventional method, since the solution treatment is performed after the final processing, it is also possible to apply heat and correct the shape at the same time. On the other hand, in the embodiment in which the solution treatment after the cold working is not performed in the present invention, since such correction is not performed, it is necessary to obtain a sufficient shape in advance by the cold working.

【0033】さらには、水素吸収にも注意する必要があ
る。すなわち、一般にβ型チタン合金は、水素吸収を起
こしやすく、水素吸収が起こった場合には、真空もしく
はAr雰囲気中で高温熱処理する必要がある。従来の工
程では、溶体化処理で脱水素を行うことが可能である
が、それには困難が伴うため、本発明の方法では、工程
途中で水素吸収しないように注意を払う必要がある。特
に、酸洗工程は水素吸収が生じやすい工程なので、酸洗
液(例えば、弗酸+硝酸水溶液)、酸洗温度、酸洗時間
などを管理する必要がある。
Furthermore, attention must be paid to hydrogen absorption. That is, generally, a β-type titanium alloy easily causes hydrogen absorption, and when hydrogen absorption occurs, it is necessary to perform high-temperature heat treatment in a vacuum or Ar atmosphere. In the conventional process, it is possible to perform dehydrogenation by solution treatment, but it is difficult. Therefore, in the method of the present invention, it is necessary to pay attention so as not to absorb hydrogen during the process. In particular, since the pickling step is a step in which hydrogen absorption is likely to occur, it is necessary to control the pickling liquid (for example, aqueous solution of hydrofluoric acid and nitric acid), the pickling temperature, and the pickling time.

【0034】[0034]

【実施例】【Example】

【0035】[0035]

【表1】 [Table 1]

【0036】表1は、各種材料の時効後の硬さと耐力の
測定結果を示したものである。より詳しくは、β型合金
であるTi−15V−3Cr−3Sn−3Al合金を熱
間圧延後溶体化処理し、それを冷間圧延しない材料と冷
間圧延した材料とをそれぞれ時効処理し、硬さの変化を
調べたものである。時効処理条件は450℃×8時間で
ある。熱間圧延後溶体化処理した材料を450℃×8時
間熱処理しても硬さは341程度でとどまるのに対し、
それを冷間加工した材料を同じ条件で時効すると、硬さ
がさらに上昇するのがわかる。これは、冷間加工による
加工硬化の効果と時効析出がより速く進行する効果とが
現われたためである。また、特に冷間加工度が15%以
上になるとその効果が明白に現われる。さらには、熱間
圧延後、溶体化せず直接冷間圧延し時効処理を行うと、
さらに硬さが高くなることも判明した。本実施例は45
0℃の時効温度であるが、より低い400℃や300℃
でも同様な効果があることが確認された。さらに、45
0℃以上の温度でも同様な効果は得られるが、600℃
以上の温度では時効が進まず、また、歪みが除去された
り、再結晶化が生じるため、効果が薄れるおそれがあ
る。すなわち時効温度は、300〜600℃程度が好ま
しい。
Table 1 shows the measurement results of hardness and proof stress after aging of various materials. More specifically, a Ti-15V-3Cr-3Sn-3Al alloy, which is a β-type alloy, is subjected to a solution treatment after hot rolling, and a non-cold-rolled material and a cold-rolled material are each subjected to aging treatment to obtain a hardened material. This is a study of the change in the height. The aging condition is 450 ° C. × 8 hours. Even though the material subjected to solution treatment after hot rolling is heat treated at 450 ° C. for 8 hours, the hardness remains at about 341.
It can be seen that when the cold worked material is aged under the same conditions, the hardness further increases. This is because the effect of work hardening by cold working and the effect of aging precipitation progressing faster appear. In addition, the effect is apparent when the cold working degree is 15% or more. Furthermore, after hot rolling, when aging treatment is performed by cold rolling directly without solutionizing,
It was also found that the hardness became higher. In this embodiment, 45
Aging temperature of 0 ° C, but lower 400 ° C or 300 ° C
However, it was confirmed that a similar effect was obtained. In addition, 45
A similar effect can be obtained at a temperature of 0 ° C. or higher, but 600 ° C.
At the above temperature, aging does not proceed, and distortion is removed or recrystallization occurs, so that the effect may be weakened. That is, the aging temperature is preferably about 300 to 600 ° C.

【0037】[0037]

【表2】 [Table 2]

【0038】本実施例のTi−15V−3Cr−3Sn
−3Al合金により作成したヘッド1の耐久性を調べた
結果を表2に示す。これは、ゴルフ用実打試験機を用い
たものである。ヘッド1のフェース2に溶体化上がり材
を用いたものや、溶体化処理後に時効処理を行った材料
では、試打時に割れや凹み等がフェース2に生じ、良好
な結果は得られていない。しかし、冷間圧延を用い、か
つ時効処理とした本実施例では、5000回の試打を行
った段階でも割れや窪みは認められず、良好な結果が得
られた。
The Ti-15V-3Cr-3Sn of the present embodiment
Table 2 shows the results of examining the durability of the head 1 made of a -3Al alloy. This uses an actual golf hitting tester. In the case of the head 2 using the material after the solution treatment for the face 2 or the material subjected to the aging treatment after the solution treatment, cracks or dents are generated in the face 2 at the time of the test hitting, and good results have not been obtained. However, in this example using cold rolling and aging treatment, no cracks or dents were observed even after 5000 trials were performed, and good results were obtained.

【0039】フェース2部の板厚t1を2.7mmとチタン
材料では従来になく薄くし、そのフェース部材16に本発
明を適用した場合としない場合とでは、明らかに割れ発
生までの試打回数が異なり、特に本発明はゴルフドライ
バーとして有効であることが本実施例により証明され
る。
In the case where the thickness of the face 2 is 2.7 mm, which is the thickness of the titanium material, which is 2.7 mm, the number of test hits before cracking is apparent between the case where the present invention is applied to the face member 16 and the case where the present invention is not applied. In contrast, this example proves that the present invention is particularly effective as a golf driver.

【0040】なお、本発明は、前記実施例に限定される
ものではなく、種々の変形実施が可能である。
It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made.

【0041】[0041]

【発明の効果】請求項1の発明のウッドゴルフクラブに
よれば、金属製で中空のウッドゴルフクラブであって、
冷間加工度が15%以上の加工組織であるβ型チタン合
金をヘッドのフェース部の材料としたので、ヘッドの耐
久性を向上させることができ、したがって、ヘッドの材
厚を薄くできることにより、総重量を抑えながらヘッド
を大型化でき、使いやすいウッドゴルフクラブを提供で
きる。
According to the wood golf club of the first aspect of the present invention, there is provided a hollow wood golf club made of metal,
Since the face portion of the head is made of a β-type titanium alloy having a working structure of a cold working degree of 15% or more, the durability of the head can be improved, and therefore, the material thickness of the head can be reduced. The head can be made large while keeping the total weight low, and an easy-to-use wood golf club can be provided.

【0042】請求項2の発明のウッドゴルフクラブによ
れば、金属製で中空のウッドゴルフクラブであって、β
型チタン合金からなる冷間加工材を直接時効した材料を
ヘッドのフェース部の材料としたので、製造コストを抑
えながら、ヘッドの耐久性を向上させることができ、し
たがって、ヘッドの材厚を薄くできることにより、総重
量を抑えながらヘッドを大型化でき、使いやすいウッド
ゴルフクラブを提供できる。
According to the wood golf club of the second aspect of the present invention, there is provided a hollow wood golf club made of metal,
As the head face material is a cold-worked material made of a titanium alloy, which is directly aged, the durability of the head can be improved while reducing the manufacturing cost. By doing so, it is possible to increase the size of the head while suppressing the total weight, and to provide an easy-to-use wood golf club.

【0043】請求項3の発明のウッドゴルフクラブによ
れば、β型チタン合金でβ単一相からなる冷間加工材を
直接時効した材料をヘッドのフェース部の材料としたの
で、製造コストを抑えながら、ヘッドの耐久性を向上さ
せることができ、したがって、ヘッドの材厚を薄くでき
ることにより、総重量を抑えながらヘッドを大型化で
き、使いやすいウッドゴルフクラブを提供できる。
According to the wood golf club of the third aspect of the present invention, a material obtained by directly aging a cold worked material consisting of a β single phase with a β type titanium alloy is used as a material for the face portion of the head. It is possible to improve the durability of the head while suppressing it, and therefore, it is possible to provide a wood golf club which is easy to use because the head can be made thinner by reducing the material thickness of the head while suppressing the total weight.

【0044】さらに、請求項4の発明のウッドゴルフク
ラブによれば、前記材料は、熱間圧延でβ単一相に仕上
げ、冷間加工後直接時効したので、低コストで製造でき
る。
Further, according to the wood golf club of the invention of claim 4, the material can be manufactured at a low cost because the material is finished to a single β phase by hot rolling and directly aged after cold working.

【0045】請求項5の発明のウッドゴルフクラブによ
れば、金属製で中空のウッドゴルフクラブであって、β
型チタン合金でβ単一相からなり冷間加工度が15%以
上の加工組織である冷間加工材を直接時効した材料をヘ
ッドのフェース部の材料としたので、製造コストを抑え
ながら、ヘッドの耐久性を向上させることができ、した
がって、ヘッドの材厚をフェース部で薄くできることに
より、総重量を抑えながらヘッドを大型化でき、使いや
すいウッドゴルフクラブを提供できる。
According to the wood golf club of the invention of claim 5, a hollow wood golf club made of metal, wherein β
A material obtained by directly aging a cold-worked material that has a work structure of 15% or more in the form of β-single-phase titanium alloy and has a degree of cold work of 15% or more. Since the durability of the golf club can be improved, and the material thickness of the head can be reduced at the face portion, the size of the head can be increased while suppressing the total weight, and an easy-to-use wood golf club can be provided.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のウッドゴルフクラブの一実施例を示す
ヘッド付近の斜視図である。
FIG. 1 is a perspective view of the vicinity of a head showing one embodiment of a wood golf club of the present invention.

【図2】同上ヘッド付近の断面図である。FIG. 2 is a cross-sectional view of the vicinity of the head.

【図3】同上図1のIII-III線断面図であり、(a)は
割れのない状態、(b)は割れの状況を示している。
FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1, wherein (a) shows a state without cracks and (b) shows a state of cracks.

【符号の説明】 1 ヘッド[Explanation of Signs] 1 Head

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 金属製で中空のウッドゴルフクラブであ
って、冷間加工度が15%以上の加工組織であるβ型チ
タン合金をヘッドのフェース部の材料としたことを特徴
とするウッドゴルフクラブ。
1. A wood golf club which is a hollow wood golf club made of metal, wherein a β-type titanium alloy having a cold working degree of 15% or more is used as a material of a face portion of a head. club.
【請求項2】 金属製で中空のウッドゴルフクラブであ
って、β型チタン合金からなる冷間加工材を直接時効し
た材料をヘッドのフェース部の材料としたことを特徴と
するウッドゴルフクラブ。
2. A wood golf club made of metal and hollow, wherein a material obtained by directly aging a cold-worked material made of a β-type titanium alloy is used as a material of a face portion of a head.
【請求項3】 β型チタン合金でβ単一相からなる冷間
加工材を直接時効した材料をヘッドのフェース部の材料
としたことを特徴とするウッドゴルフクラブ。
3. A wood golf club, wherein a material obtained by directly aging a cold worked material comprising a β single phase with a β type titanium alloy is used as a material for a face portion of a head.
【請求項4】 前記材料は、熱間圧延でβ単一相に仕上
げ、冷間加工後直接時効したことを特徴とする請求項2
または3記載のウッドゴルフクラブ。
4. The material according to claim 2, wherein the material is finished to a single β phase by hot rolling, and is directly aged after cold working.
Or the wood golf club according to 3.
【請求項5】 金属製で中空のウッドゴルフクラブであ
って、β型チタン合金でβ単一相からなり冷間加工度が
15%以上の加工組織である冷間加工材を直接時効した
材料をヘッドのフェース部の材料としたことを特徴とす
るウッドゴルフクラブ。
5. A hollow metal golf club made of metal, which is directly aged from a cold-worked material having a working structure of a β-type titanium alloy consisting of a β-single phase and a degree of cold working of 15% or more. A wood golf club, characterized in that is used as the material of the face of the head.
JP2001133008A 1999-06-08 2001-04-27 Wood golf club Pending JP2002003969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001133008A JP2002003969A (en) 1999-06-08 2001-04-27 Wood golf club

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP16091399 1999-06-08
JP11-160913 1999-06-08
JP2001133008A JP2002003969A (en) 1999-06-08 2001-04-27 Wood golf club

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2000153101A Division JP2001054595A (en) 1999-06-08 2000-05-24 Golf club

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2003036239A Division JP2003226952A (en) 1999-06-08 2003-02-14 Titanium alloy for golf club face

Publications (1)

Publication Number Publication Date
JP2002003969A true JP2002003969A (en) 2002-01-09

Family

ID=26487242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001133008A Pending JP2002003969A (en) 1999-06-08 2001-04-27 Wood golf club

Country Status (1)

Country Link
JP (1) JP2002003969A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8430763B2 (en) 2010-12-28 2013-04-30 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US8591353B1 (en) 2008-01-10 2013-11-26 Taylor Made Golf Company, Inc. Fairway wood golf club head
US8663029B2 (en) 2007-12-31 2014-03-04 Taylor Made Golf Company Golf club
US8821312B2 (en) 2010-06-01 2014-09-02 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US8827831B2 (en) 2010-06-01 2014-09-09 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US8888607B2 (en) 2010-12-28 2014-11-18 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
USD731606S1 (en) 2014-06-23 2015-06-09 Taylor Made Golf Company, Inc. Iron club head
USD735284S1 (en) 2014-06-23 2015-07-28 Taylor Made Golf Company, Inc. Iron club head
US9089749B2 (en) 2010-06-01 2015-07-28 Taylor Made Golf Company, Inc. Golf club head having a shielded stress reducing feature
USD737913S1 (en) 2014-06-23 2015-09-01 Taylor Made Golf Company, Inc. Iron club head
USD737912S1 (en) 2014-06-23 2015-09-01 Taylor Made Golf Company, Inc. Iron club head
US9168428B2 (en) 2010-06-01 2015-10-27 Taylor Made Golf Company, Inc. Hollow golf club head having sole stress reducing feature
US9220953B2 (en) 2010-12-28 2015-12-29 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
USD772996S1 (en) 2015-07-16 2016-11-29 Taylor Made Golf Company, Inc. Golf club head
US9707457B2 (en) 2010-12-28 2017-07-18 Taylor Made Golf Company, Inc. Golf club
US9943734B2 (en) 2004-11-08 2018-04-17 Taylor Made Golf Company, Inc. Golf club
US10065082B2 (en) 2014-07-22 2018-09-04 Taylor Made Golf Company, Inc. Golf club
US10639524B2 (en) 2010-12-28 2020-05-05 Taylor Made Golf Company, Inc. Golf club head
US10653926B2 (en) 2018-07-23 2020-05-19 Taylor Made Golf Company, Inc. Golf club heads
US11406881B2 (en) 2020-12-28 2022-08-09 Taylor Made Golf Company, Inc. Golf club heads
US11759685B2 (en) 2020-12-28 2023-09-19 Taylor Made Golf Company, Inc. Golf club heads

Cited By (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9943734B2 (en) 2004-11-08 2018-04-17 Taylor Made Golf Company, Inc. Golf club
US10610747B2 (en) 2004-11-08 2020-04-07 Taylor Made Golf Company, Inc. Golf club
US9220956B2 (en) 2007-12-31 2015-12-29 Taylor Made Golf Company, Inc. Golf club
US8663029B2 (en) 2007-12-31 2014-03-04 Taylor Made Golf Company Golf club
US10058747B2 (en) 2008-01-10 2018-08-28 Taylor Made Golf Company, Inc Golf club
US10335649B2 (en) 2008-01-10 2019-07-02 Taylor Made Golf Company, Inc. Golf club
US9687700B2 (en) 2008-01-10 2017-06-27 Taylor Made Golf Company, Inc. Golf club head
US11491376B2 (en) 2008-01-10 2022-11-08 Taylor Made Golf Company, Inc. Golf club
US9586103B2 (en) 2008-01-10 2017-03-07 Taylor Made Golf Company, Inc. Golf club head and golf club
US10974106B2 (en) 2008-01-10 2021-04-13 Taylor Made Golf Company, Inc. Golf club
US8591353B1 (en) 2008-01-10 2013-11-26 Taylor Made Golf Company, Inc. Fairway wood golf club head
US10625125B2 (en) 2008-01-10 2020-04-21 Taylor Made Golf Company, Inc. Golf club
US9168431B2 (en) 2008-01-10 2015-10-27 Taylor Made Golf Company, Inc. Fairway wood golf club head
US11364421B2 (en) 2010-06-01 2022-06-21 Taylor Made Golf Company, Inc. Golf club head having a shaft connection system socket
US11478685B2 (en) 2010-06-01 2022-10-25 Taylor Made Golf Company, Inc. Iron-type golf club head
US9168434B2 (en) 2010-06-01 2015-10-27 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9168428B2 (en) 2010-06-01 2015-10-27 Taylor Made Golf Company, Inc. Hollow golf club head having sole stress reducing feature
US9089749B2 (en) 2010-06-01 2015-07-28 Taylor Made Golf Company, Inc. Golf club head having a shielded stress reducing feature
US9174101B2 (en) 2010-06-01 2015-11-03 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US10843050B2 (en) 2010-06-01 2020-11-24 Taylor Made Golf Company, Inc. Multi-material iron-type golf club head
US10792542B2 (en) 2010-06-01 2020-10-06 Taylor Made Golf Company, Inc Golf club head having a stress reducing feature and shaft connection system socket
US11351425B2 (en) 2010-06-01 2022-06-07 Taylor Made Golf Company, Inc. Multi-material iron-type golf club head
US10245485B2 (en) 2010-06-01 2019-04-02 Taylor Made Golf Company Inc. Golf club head having a stress reducing feature with aperture
US9265993B2 (en) 2010-06-01 2016-02-23 Taylor Made Golf Company, Inc Hollow golf club head having crown stress reducing feature
US9011267B2 (en) 2010-06-01 2015-04-21 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
US9566479B2 (en) 2010-06-01 2017-02-14 Taylor Made Golf Company, Inc. Golf club head having sole stress reducing feature
US11045696B2 (en) 2010-06-01 2021-06-29 Taylor Made Golf Company, Inc. Iron-type golf club head
US9610482B2 (en) 2010-06-01 2017-04-04 Taylor Made Golf Company, Inc Golf club head having a stress reducing feature with aperture
US9610483B2 (en) 2010-06-01 2017-04-04 Taylor Made Golf Company, Inc Iron-type golf club head having a sole stress reducing feature
US9656131B2 (en) 2010-06-01 2017-05-23 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
US11771964B2 (en) 2010-06-01 2023-10-03 Taylor Made Golf Company, Inc. Multi-material iron-type golf club head
US10556160B2 (en) 2010-06-01 2020-02-11 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US10369429B2 (en) 2010-06-01 2019-08-06 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
US8827831B2 (en) 2010-06-01 2014-09-09 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US8821312B2 (en) 2010-06-01 2014-09-02 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9950222B2 (en) 2010-06-01 2018-04-24 Taylor Made Golf Company, Inc. Golf club having sole stress reducing feature
US9950223B2 (en) 2010-06-01 2018-04-24 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9956460B2 (en) 2010-06-01 2018-05-01 Taylor Made Golf Company, Inc Golf club head having a stress reducing feature and shaft connection system socket
US11865416B2 (en) 2010-06-01 2024-01-09 Taylor Made Golf Company, Inc. Golf club head having a shaft connection system socket
US10300350B2 (en) 2010-06-01 2019-05-28 Taylor Made Golf Company, Inc. Golf club having sole stress reducing feature
US9186560B2 (en) 2010-12-28 2015-11-17 Taylor Made Golf Company, Inc. Golf club
US10639524B2 (en) 2010-12-28 2020-05-05 Taylor Made Golf Company, Inc. Golf club head
US8753222B2 (en) 2010-12-28 2014-06-17 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US9707457B2 (en) 2010-12-28 2017-07-18 Taylor Made Golf Company, Inc. Golf club
US9700769B2 (en) 2010-12-28 2017-07-11 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US10434384B2 (en) 2010-12-28 2019-10-08 Taylor Made Golf Company, Inc. Golf club head
US10478679B2 (en) 2010-12-28 2019-11-19 Taylor Made Golf Company, Inc. Golf club head
US9700763B2 (en) 2010-12-28 2017-07-11 Taylor Made Golf Company, Inc. Golf club
US10603555B2 (en) 2010-12-28 2020-03-31 Taylor Made Golf Company, Inc. Golf club head
US8888607B2 (en) 2010-12-28 2014-11-18 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US9220953B2 (en) 2010-12-28 2015-12-29 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US11298599B2 (en) 2010-12-28 2022-04-12 Taylor Made Golf Company, Inc. Golf club head
US11654336B2 (en) 2010-12-28 2023-05-23 Taylor Made Golf Company, Inc. Golf club head
US9211447B2 (en) 2010-12-28 2015-12-15 Taylor Made Golf Company, Inc. Golf club
US8900069B2 (en) 2010-12-28 2014-12-02 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US8430763B2 (en) 2010-12-28 2013-04-30 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US10898764B2 (en) 2010-12-28 2021-01-26 Taylor Made Golf Company, Inc. Golf club head
US10905929B2 (en) 2010-12-28 2021-02-02 Taylor Made Golf Company, Inc. Golf club head
US10974102B2 (en) 2010-12-28 2021-04-13 Taylor Made Golf Company, Inc. Golf club head
US10252119B2 (en) 2010-12-28 2019-04-09 Taylor Made Golf Company, Inc. Golf club
US8956240B2 (en) 2010-12-28 2015-02-17 Taylor Made Golf Company, Inc. Fairway wood center of gravity projection
US11202943B2 (en) 2010-12-28 2021-12-21 Taylor Made Golf Company, Inc. Golf club head
US11148021B2 (en) 2010-12-28 2021-10-19 Taylor Made Golf Company, Inc. Golf club head
US11426639B2 (en) 2013-12-31 2022-08-30 Taylor Made Golf Company, Inc. Golf club
USD737912S1 (en) 2014-06-23 2015-09-01 Taylor Made Golf Company, Inc. Iron club head
USD735284S1 (en) 2014-06-23 2015-07-28 Taylor Made Golf Company, Inc. Iron club head
USD731606S1 (en) 2014-06-23 2015-06-09 Taylor Made Golf Company, Inc. Iron club head
USD737913S1 (en) 2014-06-23 2015-09-01 Taylor Made Golf Company, Inc. Iron club head
US10806976B2 (en) 2014-07-22 2020-10-20 Taylor Made Golf Company, Inc. Golf club
US10065082B2 (en) 2014-07-22 2018-09-04 Taylor Made Golf Company, Inc. Golf club
USD772996S1 (en) 2015-07-16 2016-11-29 Taylor Made Golf Company, Inc. Golf club head
US11400350B2 (en) 2018-07-23 2022-08-02 Taylor Made Golf Company, Inc. Golf club heads
US11013965B2 (en) 2018-07-23 2021-05-25 Taylor Made Golf Company, Inc. Golf club heads
US10653926B2 (en) 2018-07-23 2020-05-19 Taylor Made Golf Company, Inc. Golf club heads
US11771963B2 (en) 2018-07-23 2023-10-03 Taylor Made Golf Company, Inc. Golf club heads
US11406881B2 (en) 2020-12-28 2022-08-09 Taylor Made Golf Company, Inc. Golf club heads
US11759685B2 (en) 2020-12-28 2023-09-19 Taylor Made Golf Company, Inc. Golf club heads

Similar Documents

Publication Publication Date Title
JP2001054595A (en) Golf club
JP2002003969A (en) Wood golf club
JP2003226952A (en) Titanium alloy for golf club face
US6558273B2 (en) Method for manufacturing a golf club
US6902497B2 (en) Golf club head with a face insert
US6994636B2 (en) Golf club head
JP4058998B2 (en) Golf club head
US6929566B2 (en) Golf club head and method of manufacturing the same
JP3779531B2 (en) Golf club
JP4256668B2 (en) Golf club
JP2007307143A (en) Golf club head
JP2004337445A (en) Golf club head, and its production method
JP4184749B2 (en) Golf club head
US6719643B1 (en) Golf club head with a face insert
JP2004065660A (en) Golf club head
JP2003003224A (en) High-strength titanium alloy material, method of manufacturing for the same and golf club head using the alloy material
US20020016216A1 (en) Golf club
JP3860095B2 (en) Golf club and method for manufacturing the same
JP2001029518A (en) Titanium alloy material for golf club head
JP2002360747A (en) Golf club head and method for manufacturing the same
JP2004267630A (en) Golf club head
JP2003129154A (en) Golf club head
JP2008006305A (en) Golf club head
JP3853727B2 (en) Golf club head manufacturing method and golf club head manufactured by the manufacturing method
JP2002143354A (en) Golf club head and its manufacturing method

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060612

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060810

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20070409

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070601

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20070607

A912 Removal of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20070803