JPS63109880A - Production of golf ball - Google Patents
Production of golf ballInfo
- Publication number
- JPS63109880A JPS63109880A JP25536586A JP25536586A JPS63109880A JP S63109880 A JPS63109880 A JP S63109880A JP 25536586 A JP25536586 A JP 25536586A JP 25536586 A JP25536586 A JP 25536586A JP S63109880 A JPS63109880 A JP S63109880A
- Authority
- JP
- Japan
- Prior art keywords
- golf ball
- shaft
- grinding
- end surface
- manufacturing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 10
- 239000010432 diamond Substances 0.000 claims description 10
- 239000006061 abrasive grain Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、良好な研削表面を有し、品質の均一化したゴ
ルフボールを得ることができるゴルフボ−ルの製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a golf ball, which allows golf balls with a good ground surface and uniform quality to be obtained.
従来立扱亙
ゴルフボールをモールド成形した場合、圧縮成形法、射
出成形法のいずれの場合でも金型割面パリが生じ、また
射出成形法により成形した場合には更に保持ピンパリが
発生する。Conventionally, when a standing golf ball is molded, cracks occur on the mold surface regardless of whether compression molding or injection molding is used, and retention cracks also occur when molded by injection molding.
従来、このようなゴルフボールのパリは、金型割面バリ
の場合は研削ホイールや研削ベルト等を用いて研削除去
することが行われており、保持ピンバリはナイフ等で切
削除去することが行われている。また、射出成形された
ゴルフボールに対してはセンターレス研削機を使用して
ゴルフボール全表面を研削し、金型割面バリと保持ピン
バリとを同時に除去する方法も採用されている。更に、
砥石粒とゴルフボールとを振動しているバレルに入れ、
砥石粒にてゴルフボールの全表面を同時に研削する振動
バレル法等の研削方法もある。Conventionally, such burrs on golf balls have been removed by grinding using a grinding wheel or a grinding belt in the case of burrs on the cutting surface of the mold, while burrs on the holding pin have been removed by cutting with a knife or the like. It is being said. Furthermore, for injection molded golf balls, a method has been adopted in which the entire surface of the golf ball is ground using a centerless grinder to simultaneously remove mold split surface burrs and holding pin burrs. Furthermore,
Put the grindstone grains and golf ball into a vibrating barrel,
There are also other grinding methods, such as the vibrating barrel method, in which the entire surface of the golf ball is ground simultaneously using abrasive grains.
川が ゛ しようとする間 、Ｑ
しかしながら、上述した研削ホイールや研削ベルト等を
用いて金型割面バリを除去する方法は、通常ゴルフボー
ルをその金型割面の周方向に沿って回転させなから該金
型割面を回転する研削ホイールや研削ベル１−に当て、
金型割面バリを研削除去するものであるが、このように
金型割面のみを研削する方法は、この金型割面の全周の
みが平滑化されて、ゴルフボールに帯状研削跡が形成さ
れるので、ゴルフボールの外観に問題を与える。However, the method of removing mold surface burrs using a grinding wheel or a grinding belt as described above usually involves rotating the golf ball along the circumferential direction of the mold surface. Then, apply the mold split surface to a rotating grinding wheel or grinding bell 1-,
This method involves grinding away burrs on the mold cut surface, but this method of grinding only the mold cut surface smoothes only the entire circumference of the mold cut surface, leaving band-like grinding marks on the golf ball. This creates problems with the appearance of the golf ball.
一方、センターレス研削法でゴルフボールのパリを研削
した場合には、研削機の研削砥石の溝が正確な半径を持
ち、また、研削力が強いために、研削後のゴルフボール
は非常に精度のよい直球に形成されるが、モールド成形
後のゴルフボールの直径に多少のバラツキがあっても同
一寸法に仕上がってしまい、従って直径の大きなゴルフ
ボールに対してはより表面が研削されてディンプルが浅
く、直径の小さなゴルフボールはその逆となり。On the other hand, when the centerless grinding method is used to grind the edges of a golf ball, the grooves of the grinding wheel of the grinding machine have a precise radius, and the grinding force is strong, so the golf ball after grinding has very high precision. However, even if there is some variation in the diameter of the golf ball after molding, it will end up with the same dimensions, so for golf balls with a large diameter, the surface will be ground more and the dimples will be less. The opposite is true for shallow, small diameter golf balls.
ディンプルの深さが不安定となって飛行性能に与える影
響が無視できなくなるといった欠陥がある。There is a flaw in that the depth of the dimples becomes unstable, which has a non-negligible effect on flight performance.
また、振動バレル法でゴルフボールのパリを研削した場
合には、モールド成形後のゴルフボールの直径にバラツ
キがあっても、一定の研削条件下では研削量を一定とし
得るものの、パリの除去と同時にディンプルの周辺も同
時に研削されてしまうため、飛行性能に悪影響を与える
のみならず、ディンプル形状が不明瞭となり、外観上も
満足し得るゴルフボールが得られないといった問題があ
る。In addition, when grinding the paris of a golf ball using the vibrating barrel method, even if the diameter of the golf ball after molding varies, the amount of grinding can be kept constant under certain grinding conditions. At the same time, the area around the dimples is also ground, which not only adversely affects flight performance, but also makes the dimple shape unclear, making it impossible to obtain a golf ball that is satisfactory in terms of appearance.
本発明は上記事情に鑑みなされたもので、モールド成形
後のゴルフボールの直径に多少のバラツキがあってもデ
ィンプルの深さ、形状にほとんど差のないゴルフボール
が得られると共に、ゴルフボールの表面をムラなく研削
することができ、従ってボールの飛行性能等の性能を安
定して保持し得、しかも良好な研削表面を有し、優れた
外観を呈するゴルフボールが得られるゴルフボールの製
造方法を提供することを目的とする。The present invention was made in view of the above circumstances, and it is possible to obtain a golf ball with almost no difference in the depth and shape of dimples even if there is some variation in the diameter of the golf ball after molding, and the surface of the golf ball. To provide a method for manufacturing a golf ball, which can grind evenly, thereby stably maintaining performance such as ball flight performance, and which can have a good ground surface and an excellent appearance. The purpose is to provide.
丁−点を するための手
本発明は上記目的を達成するため、モールド成形後のゴ
ルフボールの表面を研削してゴルフボールを製造するに
際し、同一平面上に互に１２０゜位相をずらしてかつ中
心軸線が互にゴルフボール配置位置に配置されるゴルフ
ボールの中心点で交わるように配置され、それぞれ軸方
向移動可能かつ回転可能に配設された３個の軸体を有し
、これら軸体の先端面をそれぞれゴルフボール表面の曲
率と同じ曲率を有するゴルフボール表面と係合する凹状
球面に形成すると共に、前記軸体をそれぞれ軸方向に移
動させかつ回転させる機構を具備した研削装置を使用し
、ゴルフボール表面を前記軸体の凹状球面を有する先端
面に係合当接させ、ゴルフボールをこれら軸体で支持し
つつこれら軸体を互に同一方向に回転させて、市記軸体
の先端面でゴルフボール表面を研削するようにしたもの
である。In order to achieve the above-mentioned object, the present invention, when manufacturing a golf ball by grinding the surface of a golf ball after molding, grinds the surface of a golf ball on the same plane with a phase shift of 120 degrees and It has three shaft bodies arranged so that their central axes intersect with each other at the center points of the golf balls arranged at the golf ball arrangement positions, and each of which is disposed so as to be movable and rotatable in the axial direction. A grinding device is used, which has a concave spherical surface that engages the golf ball surface having the same curvature as the golf ball surface, and a mechanism for moving and rotating the shaft bodies in the axial direction. The surface of the golf ball is brought into engagement contact with the distal end surface having a concave spherical surface of the shaft body, and while the golf ball is supported by these shaft bodies, these shaft bodies are rotated in the same direction, thereby forming the shaft body. The surface of the golf ball is ground with the tip end surface of the golf ball.
この場合、各軸体の先端面を研削砥石、特にダイヤモン
ド砥粒等を用いてＪＩＳ粒度＃８ｏ〜８００の砥粒で形
成することが好ましく、また研削に当り、研削圧力（各
軸体の先端面のゴルフボールに対する加圧力）を５〜１
５ｋｇ、各軸体の回転速度を１０〜８００ ｍ ／ ｓ
とし、一の軸体の先端面のゴルフボールに対する加圧力
とこの軸体の回転数との少なくとも一つを他の軸体の先
端面のゴルフボールに対する加圧力及び他の軸体の回転
数と相違させて研削を行うようにすることが好ましい。In this case, it is preferable to form the tip end surface of each shaft body with abrasive grains having a JIS grain size of #8o to 800 using a grinding wheel, especially diamond abrasive grains. Pressure force on the surface of the golf ball) from 5 to 1
5 kg, rotation speed of each shaft body 10-800 m/s
and at least one of the pressure applied to the golf ball by the tip surface of one shaft and the rotation speed of this shaft is the pressure applied to the golf ball by the tip surface of the other shaft and the rotation speed of the other shaft. It is preferable to perform grinding by making a difference.
なお、ダイヤモンド砥粒を使用した研削砥石により研削
を行う従来方法においては、ダイヤモンド砥粒の粒度が
本発明の好適範囲と重複するＪＩＳ粒度＃８０〜２００
０の範囲の場合、研削液の使用の有無にかかわらず乾式
、湿式いずれの場合においても通常研削砥石の回転速度
は１０００〜１５００ｍ／ｓが好適であるが、本発明方
法によれば既に説明したようにこの半分程度以下の研削
が好ましく１両者の好適範囲の差異を念頭においてゴル
フボールの製造を行うことが肝要である。In addition, in the conventional method of grinding with a grinding wheel using diamond abrasive grains, the grain size of the diamond abrasive grains is JIS grain size #80 to #200, which overlaps with the preferred range of the present invention.
In the case of a range of 0, the rotational speed of the grinding wheel is preferably 1000 to 1500 m/s in both dry and wet cases, regardless of whether or not a grinding fluid is used, but according to the method of the present invention, as already explained Therefore, grinding to about half or less is preferable, and it is important to manufacture golf balls keeping in mind the difference in the preferred range between the two.
北■
本発明によれば、モールド成形後のゴルフボール表面の
パリを研削除去するための研削装置が、同一平面上に互
に１２００位相をずらしてかつ中心軸線が互にゴルフボ
ール配置位置に配置されるゴルフボールの中心点で交わ
るように配置され、それぞれ軸方向移動可能かつ回転可
能に配設された３個の軸体を有し、これら軸体の先端面
をそれぞれゴルフボール表面の曲率と同じ曲率を有する
ゴルフボール表面と係合する凹状球面に形成すると共に
、前記軸体をそれぞれ軸方向に移動させかつ回転させる
機構を具備したものであり、この研削装置を使用してゴ
ルフボール表面を研削する場合、ゴルフボール表面を前
記軸体の凹状球面を有する先端面に係合当接させ、ゴル
フボールをこれら軸体で支持しつつこれら軸体を互に同
一方向に回転させて、前記軸体の先端面でゴルフボール
表面を研削するようにしたので、ディンプル形状を損な
うことなくゴルフボールの表面をムラなく研削すること
ができ、モールド成形後のゴルフボールの直径に多少の
バラツキがあってもディンプルの深さ、形状にほとんど
差のないゴルフボールが製造される。According to the present invention, the grinding devices for removing pars on the surface of the golf ball after molding are arranged on the same plane with a phase difference of 1200 degrees and whose central axes are located at the golf ball placement positions. It has three shaft bodies arranged so as to intersect at the center point of the golf ball, each of which is movable in the axial direction and rotatable. The grinding device is formed into a concave spherical surface that engages with the golf ball surface having the same curvature, and is equipped with a mechanism for moving and rotating each of the shaft bodies in the axial direction.This grinding device is used to grind the golf ball surface. When grinding, the surface of the golf ball is brought into engagement contact with the distal end surface having a concave spherical surface of the shaft, and while the golf ball is supported by these shafts, these shafts are rotated in the same direction. Since the surface of the golf ball is ground with the tip of the body, the surface of the golf ball can be ground evenly without damaging the dimple shape, and there may be some variation in the diameter of the golf ball after molding. Golf balls with virtually no difference in dimple depth or shape are manufactured.
特に、一の軸体の先端面のゴルフボールに対する加圧力
とこの軸体の回転数との少なくとも一つを他の軸体の先
端面のゴルフボールに対する加圧力及び軸体の回転数と
相違させて研削を行うようにした場合には、ゴルフボー
ルを途中で位置換えしなくても、全表面が効果的に研削
される。In particular, at least one of the pressure applied to the golf ball by the distal end surface of one shaft and the rotation speed of this shaft is made to be different from the pressure applied to the golf ball by the distal end surface of the other shaft and the rotation speed of the shaft. When grinding is performed by grinding, the entire surface of the golf ball can be effectively ground without changing the position of the golf ball midway.
以下、本発明の一実施例につき図面を参照して説明する
。Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
尖巖勇
第１図は本発明の実施に用いるゴルフボール製造用研削
装置の軸体部分を例示したもので、この研削機は互に同
一構成の３個の軸体１，１’、１″を具備する。これら
軸体１．１’、１“は、互に１２０ａ位相をずらしてか
つ中心軸線が互にゴルフボール配置位置に配置されるゴ
ルフボール２の中心点０で交わるように配置され、それ
ぞれ軸方向移動可能かつ回転可能に配設されている。前
記軸体１（なお、他の軸体１′、１″はこの一の軸体１
と同一構成であるため、一の軸体１の構成のみを説明し
、他の軸体１′、１″の説明は省略する）は円柱状に形
成され、その先端面１ａはゴルフボール２の表面の曲率
と同じ曲率（通常曲率誤差＋０．１〜ＯＩ程度）を有し
、ゴルフボール２表面と係合する凹状球面に形成されて
おり、この凹状球面状の先端面１ａは研削砥石にて形成
されている。なお、研削砥石としては種々のものが用い
られるが、特にダイヤモンド砥石が砥石寿命が長い点で
推賞される。この場合、ダイヤモンド砥石の形成は軸体
先端面に対し、フェノール系樹脂中にダイヤモンド砥粒
が分散固着した層を形成したり、ダイヤモンド粒子を分
散した無電解ニッケルめっき液や電気ニッケルめっき液
等を用いてめっきを行うことにより析出金屈母相中にダ
イヤモンド粒子を分散複合させることで行われる。砥石
の粒度も適宜選定されるが、アイオノマー樹脂のカバー
のゴルフボールにはＪＩＳ規格で＃８０〜８００の粒度
のものが好ましい。また、前記先端面１ａの中央部には
、円板状凹部３が形成され、これにより先端面１ａは円
形リング状に構成されている。Figure 1 shows an example of the shaft part of a golf ball manufacturing grinding device used in the practice of the present invention. These shaft bodies 1.1', 1'' are arranged so that they are out of phase with each other by 120a and their central axes intersect at the center point 0 of the golf ball 2, which is arranged at the golf ball arrangement position. , respectively, are arranged to be axially movable and rotatable. The shaft 1 (the other shafts 1' and 1'' are the same as this one shaft 1)
Since the structure is the same as that of the golf ball 2, only the structure of the shaft 1 will be explained, and the explanation of the other shafts 1' and 1'' will be omitted. It is formed into a concave spherical surface that has the same curvature as the surface curvature (usually about curvature error +0.1 to OI) and engages with the surface of the golf ball 2, and this concave spherical tip surface 1a is polished with a grinding wheel. Various types of grinding wheels are used, but diamond grinding wheels are particularly recommended for their long lifespan.In this case, the diamond grinding wheel is formed using a phenol-based By forming a layer in which diamond abrasive grains are dispersed and fixed in a resin, or by plating with an electroless nickel plating solution or an electrolytic nickel plating solution in which diamond particles are dispersed, diamond particles can be incorporated into the precipitated gold matrix. This is done by dispersing and compounding.The grain size of the grinding wheel is also selected appropriately, but for golf balls with ionomer resin covers, it is preferable to have a grain size of #80 to #800 according to the JIS standard. A disk-shaped recess 3 is formed in the tip, and the tip end surface 1a is configured in the shape of a circular ring.
そして、前記軸体１．１’、１″を具備した研削装置に
は、図示していないがこれら軸体１．１’、１″を軸方
向に移動させる機構と回転させる機構が具備されている
。The grinding device equipped with the shaft bodies 1.1', 1'' is equipped with a mechanism for moving these shaft bodies 1.1', 1'' in the axial direction and a mechanism for rotating them, although not shown. There is.
本発明は、上述した如き研削装置を用い、圧縮成形、射
出成形等によりモールド成形されたバリ未除去のゴルフ
ボールの表面を研削するもので、研削操作に際しては、
まず前記研削装置の軸体移動機構を操作して３個の軸体
１，１’、１″を軸方向に後退させ、これら３個の軸体
１，１’、１″先端１ ａ、ｌ’ａ、１“８間にゴルフ
ボール２が入る空間を形成し、ゴルフボール２を該空間
に配した後、軸体１．１’、１″を軸方向に進出させ、
これら軸体１．１’、１″の先端部１ ａ、ｌ’ａ、ｌ
″ａをゴルフボール２の表面と係合当接させてゴルフボ
ール２を支持する。そして、この状態で研削装置の軸体
回転機構を操作し、各軸体１，１’、１″を互に同一方
向に回転させる。これにより、ゴルフボール２表面に軸
体先端面１ａ、ｌ’ａ、１″ａが係合当接しながら回転
すると共に、この回転によりゴルフボールも回転するた
め、ゴルフボール２の表面が研削され、パリ（金型割面
バリや保持ピンバリ）が除去される。このパリを含む研
削くずは前記円板状凹部３内に溜められる。The present invention uses the above-mentioned grinding device to grind the surface of a golf ball that has been molded by compression molding, injection molding, etc. and has not had any burrs removed.During the grinding operation,
First, the shaft moving mechanism of the grinding device is operated to move the three shafts 1, 1', 1'' back in the axial direction, and the tips 1a, l of these three shafts 1, 1', 1'' are moved back. After forming a space in which the golf ball 2 enters between 'a, 1'' and 8, and placing the golf ball 2 in the space, the shaft body 1.1', 1'' is advanced in the axial direction,
Tips 1a, l'a, l of these shafts 1.1', 1''
"a" is brought into engagement contact with the surface of the golf ball 2 to support the golf ball 2. Then, in this state, the shaft body rotation mechanism of the grinding device is operated to rotate each shaft body 1, 1', 1'' mutually. rotate in the same direction. As a result, the shaft end surfaces 1a, l'a, 1''a rotate while engaging and contacting the surface of the golf ball 2, and the golf ball also rotates due to this rotation, so that the surface of the golf ball 2 is ground. Burrs (mold splitting surface burrs and holding pin burrs) are removed. Grinding waste containing this flash is collected in the disc-shaped recess 3.
この場合、各軸体１，１’、１“の先端面１ ａ、ｌ’
ａ、１″ａのゴルフボール２に対する加圧力はそれぞれ
３〜２０ｋｇ程度とすることが好ましく、また軸体１．
１’、１”の回転速度は１０〜８００ｍ／Ｓとすること
が好ましい。ここで、軸体１，１′、１″のボールに対
する加圧力及び回転数は互に相違させることができ、軸
体１，１’、１″のボールに対する加圧力、回転数の少
なくともいずれか一つを制御することにより、軸体先端
面１ ａ、ｌ’ａ、１″ａからゴルフボールに伝達され
る加圧、回転による応力差によりゴルフボールが軌跡を
描いて動きだし、このため一定時間経過後にはゴルフボ
ールの表面が確実に万辺なく研削される。また、上記研
削装置を用いてゴルフボールを研削する場合、ゴルフボ
ールの直径に多少のバラツキがあってもゴルフボールは
回転開始から回転停止までの一定の研削時間で研削され
るため、ディンプルの深さ、形状にほとんど差がなく研
削され、全表面にムラのない品質及び外観が共に優れた
ゴルフボールが製造され、本発明方法はワンピースゴル
フボール、ツーピースゴルフボール、糸巻きゴルフボー
ル等の製造に好適に用いられる。In this case, the tip surfaces 1 a, l' of each shaft body 1, 1', 1''
It is preferable that the pressing forces of the shafts 1.
The rotational speed of the shafts 1', 1" is preferably 10 to 800 m/s. Here, the pressing force and rotational speed of the shafts 1, 1', 1" against the balls can be made different from each other. By controlling at least one of the pressing force and rotation speed of the bodies 1, 1', and 1'' on the ball, the force transmitted to the golf ball from the shaft body tip surfaces 1a, l'a, and 1''a can be controlled. The golf ball begins to move in a trajectory due to the difference in stress due to pressure and rotation, and as a result, after a certain period of time has elapsed, the surface of the golf ball is reliably ground to perfection. Furthermore, when grinding a golf ball using the above-mentioned grinding device, even if there is some variation in the diameter of the golf ball, the golf ball is ground in a constant grinding time from the start of rotation to the stop of rotation, so the depth of the dimples is The method of the present invention is suitable for manufacturing one-piece golf balls, two-piece golf balls, wound golf balls, etc. used for.
なお、上述した実施例では、軸体を円柱状に形成したが
、軸体の形状はこれに限られず、例えば円筒状等に形成
し得る。更に、軸体の先端面には。In addition, in the above-mentioned embodiment, the shaft body was formed into a cylindrical shape, but the shape of the shaft body is not limited to this, and may be formed into, for example, a cylindrical shape. Furthermore, on the tip surface of the shaft body.
第３図に示したように、径方向に沿って研削くずを逃す
ための溝４を放射状に形成するなど、種々変更可能であ
る。また、軸体の先端部を着脱可能に形成し、先端面の
研削砥石の研削力が低下したら新しいものと交換するよ
うにすることもできる。As shown in FIG. 3, various modifications can be made, such as forming grooves 4 radially along the radial direction for releasing grinding waste. Further, the tip of the shaft body can be formed to be detachable, so that when the grinding force of the grinding wheel on the tip surface decreases, it can be replaced with a new one.
なおまた、上述した方法では、軸体先端面を研削砥石に
て形成したが、研削を研削砥粒が分散した研削液を軸体
先端面に供給することによりこの砥１′ｌの作用で行う
ことができ、また研削砥石と研削液とを併用して行うこ
とができ、その他の構成も本発明の要旨の範囲で種々変
更して差支えない。Furthermore, in the method described above, the tip surface of the shaft body is formed with a grinding wheel, but the grinding is performed by the action of this grinder 1'l by supplying a grinding liquid in which grinding grains are dispersed to the tip surface of the shaft body. It is also possible to use a grinding wheel and a grinding liquid in combination, and other configurations may be variously modified within the scope of the gist of the present invention.
次に実験例により本発明の効果を具体的に示す。Next, the effects of the present invention will be specifically illustrated by experimental examples.
射出成形して得られた第１表に示す２種の直径を有する
アイオノマーカバーのツーピースボールに対し、第１図
に示す如き研削装置を用いて表面研削を行った。この場
合、各軸体の先端面はＪＩＳ：２３０の粒度を有するダ
イヤモンド砥粒にて形成されており、３個の軸体にそれ
ぞれゴルフボールに６．０ｋｇ、６．０ｋｇ、６．０ｋ
ｇの力が加わるよう加圧力を調整してゴルフボールを支
持すると共に、それぞれの軸体の回転数を９０ ｍ ／
ｓ 。Two-piece balls with ionomer covers having two diameters shown in Table 1 obtained by injection molding were subjected to surface grinding using a grinding device as shown in FIG. In this case, the tip surface of each shaft is made of diamond abrasive grains having a grain size of JIS: 230, and the three shafts each have a weight of 6.0 kg, 6.0 kg, and 6.0 kg, respectively.
The golf ball is supported by adjusting the pressing force so that a force of g is applied, and the rotation speed of each shaft is set to 90 m/
s.
９０ｍ／ｓ、９０ｍ／ｓとなるよう調整して２５秒間研
削を行い、研削前後のゴルフボールの直径、ディンプル
深さを測定した。また、研削されたゴルフボールの外観
を評価すると共に、ツルーテンパー社製打撃ロボットを
用いてドライバーで４５ｍ ／ ｓのヘッドスピードに
おいて打撃した場合の飛び性能を評価した。Grinding was performed for 25 seconds with the speed adjusted to 90 m/s and 90 m/s, and the diameter and dimple depth of the golf ball before and after the grinding were measured. In addition, the appearance of the ground golf ball was evaluated, and its flight performance when hit with a driver at a head speed of 45 m/s using a hitting robot manufactured by True Temper was evaluated.
また、比較のために、従来のセンターレス研削法、振動
バレル法で研削を行い、同様のａ＋＋＋定、飛び性能試
験を行った。For comparison, grinding was performed using the conventional centerless grinding method and vibrating barrel method, and similar a+++ constant and fly performance tests were conducted.
以上の結果を第１表に示す。The above results are shown in Table 1.
第 １ 表
なお、センターレス研削は米国ブレバー社製の装置を使
用し、回転砥石ＷＷＢ−３４８３．レギュレーティング
ホイル回転数１００〜１５０ｒｐｍ。Table 1 Centerless grinding was performed using a device manufactured by Braver Corporation in the United States, using a rotary grindstone WWB-3483. Regulating wheel rotation speed 100-150 rpm.
研削時間５秒の条件下で実施した。The grinding was carried out under conditions where the grinding time was 5 seconds.
また、振動バレル研削はチップトン・エスボ社製の装置
を使用し、この中に砥粒（ＨＧＴ−２）６０ｋｇ、ツー
ピースポール４００個、及び水ＩＱを混入し、研削時間
３０分の条件下で行った。In addition, vibration barrel grinding was performed using a device manufactured by Tipton Esbo Co., Ltd., in which 60 kg of abrasive grains (HGT-2), 400 two-piece poles, and water IQ were mixed, and the grinding time was 30 minutes. Ta.
第１表の結果から、本発明方法によれば、センターレス
研削法の場合に見られるようなモールド成形後のゴルフ
ポールの直径のバラツキによるディンプル深さの大幅な
変化や仰角差等の飛行性能の大幅な変化が生じることが
なく、また、振動バレル法の場合のようにディンプルの
輪郭が傷つけられて外観不良が生じることもなく、モー
ルド成形後のゴルフボールの直径に多少のバラツキがあ
っても性能がほとんど変化することなく、表面が良好に
研削され、性能及び外観がともに優れたゴルフボールを
製造し得ることが確認された。From the results in Table 1, it can be seen that, according to the method of the present invention, flight performance such as significant changes in dimple depth and elevation angle differences due to variations in the diameter of golf poles after molding, as seen in the case of centerless grinding, can be seen. There is no significant change in the diameter of the golf ball after molding, there is no damage to the outline of the dimples and poor appearance as in the case of the vibrating barrel method, and there is no slight variation in the diameter of the golf ball after molding. It was confirmed that it was possible to produce a golf ball with a well-ground surface and excellent performance and appearance, with almost no change in performance.
ｌ更段紘果
以上説明したように、本発明方法によれば、モールド成
形後のゴルフボールの直径に多少のバラツキがあっても
性能をほとんど変化させることなくゴルフボールを研削
し得て良好な研削表面を与え、性能及び外観がともに優
れたゴルフボールを得ることができ、ワンピースポール
、ツーピースポール、糸巻きポール等のゴルフボールを
高品質に製造することができる。As explained above, according to the method of the present invention, even if there is some variation in the diameter of the golf ball after molding, the golf ball can be ground with almost no change in performance. By providing a ground surface, golf balls with excellent performance and appearance can be obtained, and golf balls such as one-piece poles, two-piece poles, and thread-wound poles can be manufactured with high quality.
第１図は本発明の実施に用いる研削装置の軸体部分の一
例を示す概略側面図、第２図は同装置の軸体の縦断面図
、第３図は軸体の他の例を示す平面図である。
１．１’、１″・・・軸体、ｌａ、ｌ’ａ、１“ａ・・
・先端面。
２・・・ゴルフボール。Fig. 1 is a schematic side view showing an example of the shaft portion of a grinding device used in carrying out the present invention, Fig. 2 is a longitudinal sectional view of the shaft of the same device, and Fig. 3 is another example of the shaft body. FIG. 1.1', 1"... shaft body, la, l'a, 1"a...
・Tip surface. 2...Golf ball.
Claims (1)
ルフボールを製造するに際し、同一平面上に互に１２０
°位相をずらしてかつ中心軸線が互にゴルフボール配置
位置に配置されるゴルフボールの中心点で交わるように
配置され、それぞれ軸方向移動可能かつ回転可能に配設
された３個の軸体を有し、これら軸体の先端面をそれぞ
れゴルフボール表面の曲率と同じ曲率を有するゴルフボ
ール表面と係合する凹状球面に形成すると共に、前記軸
体をそれぞれ軸方向に移動させかつ回転させる機構を具
備した研削装置を使用し、ゴルフボール表面を前記軸体
の凹状球面を有する先端面に係合当接させ、ゴルフボー
ルをこれら軸体で支持しつつこれら軸体を互に同一方向
に回転させて、前記軸体の先端面でゴルフボール表面を
研削するようにしたことを特徴とするゴルフボールの製
造方法。 ２、各軸体の先端面が研削砥石にて形成された特許請求
の範囲第１項記載の製造方法。 ３、研削砥石がダイヤモンド砥粒である特許請求の範囲
第２項記載の製造方法。 ４、各軸体の先端面のゴルフボールに対する加圧力がそ
れぞれ３〜２０ｋｇであり、各軸体の回転速度が１０〜
８００ｍ／ｓである特許請求の範囲第１項乃至第３項い
ずれか記載の製造方法。 ５、一の軸体の先端面のゴルフボールに対する加圧力と
この軸体の回転数との少なくとも一つを他の軸体の先端
面のゴルフボールに対する加圧力及び他の軸体の回転数
と相違させて研削を行うようにした特許請求の範囲第１
項乃至第４項いずれか記載の製造方法。[Claims] 1. When producing a golf ball by grinding the surface of the golf ball after molding, 120 mm
Three shaft bodies are arranged so that they are out of phase and that their central axes intersect at the center point of the golf ball placed at the golf ball placement position, and are each movable and rotatable in the axial direction. The shaft bodies each have a distal end surface formed into a concave spherical surface that engages with the golf ball surface having the same curvature as the golf ball surface, and a mechanism for moving and rotating the shaft bodies in the axial direction. Using the equipped grinding device, the surface of the golf ball is brought into engagement and contact with the distal end surface having a concave spherical surface of the shaft, and while the golf ball is supported by these shafts, the shafts are rotated in the same direction. A method for manufacturing a golf ball, characterized in that the surface of the golf ball is ground by the tip end surface of the shaft. 2. The manufacturing method according to claim 1, wherein the tip end surface of each shaft body is formed by a grinding wheel. 3. The manufacturing method according to claim 2, wherein the grinding wheel is a diamond abrasive grain. 4. The pressing force of the tip surface of each shaft body against the golf ball is 3 to 20 kg, and the rotation speed of each shaft body is 10 to 20 kg.
The manufacturing method according to any one of claims 1 to 3, wherein the speed is 800 m/s. 5. Substitute at least one of the pressure applied to the golf ball by the distal end surface of one shaft and the rotation speed of this shaft with the pressure applied to the golf ball by the distal end surface of the other shaft and the rotation speed of the other shaft. Claim 1 in which grinding is performed by making a difference
4. The manufacturing method according to any one of Items 4 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255365A JP2666259B2 (en) | 1986-10-27 | 1986-10-27 | Golf ball manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255365A JP2666259B2 (en) | 1986-10-27 | 1986-10-27 | Golf ball manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63109880A true JPS63109880A (en) | 1988-05-14 |
| JP2666259B2 JP2666259B2 (en) | 1997-10-22 |
Family
ID=17277759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61255365A Expired - Lifetime JP2666259B2 (en) | 1986-10-27 | 1986-10-27 | Golf ball manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2666259B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6129611A (en) * | 1998-05-28 | 2000-10-10 | Bridgestone Sports Co., Ltd | Golf ball buffing apparatus and method |
| US6165049A (en) * | 1998-06-26 | 2000-12-26 | Bridgestone Sports Co., Ltd. | Golf ball deburring method |
| KR20160070705A (en) * | 2014-12-10 | 2016-06-20 | 진샨 피아오 | Method for producing golf ball with two colors and device thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088694A (en) * | 1973-09-28 | 1975-07-16 |
-
1986
- 1986-10-27 JP JP61255365A patent/JP2666259B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088694A (en) * | 1973-09-28 | 1975-07-16 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6129611A (en) * | 1998-05-28 | 2000-10-10 | Bridgestone Sports Co., Ltd | Golf ball buffing apparatus and method |
| US6165049A (en) * | 1998-06-26 | 2000-12-26 | Bridgestone Sports Co., Ltd. | Golf ball deburring method |
| KR20160070705A (en) * | 2014-12-10 | 2016-06-20 | 진샨 피아오 | Method for producing golf ball with two colors and device thereof |
| JP2016106984A (en) * | 2014-12-10 | 2016-06-20 | 金山 朴 | Method and apparatus for manufacturing two color golf ball |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2666259B2 (en) | 1997-10-22 |
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