CN101549203A - Golf club and manufacturing method thereof - Google Patents
Golf club and manufacturing method thereof Download PDFInfo
- Publication number
- CN101549203A CN101549203A CNA2009101283543A CN200910128354A CN101549203A CN 101549203 A CN101549203 A CN 101549203A CN A2009101283543 A CNA2009101283543 A CN A2009101283543A CN 200910128354 A CN200910128354 A CN 200910128354A CN 101549203 A CN101549203 A CN 101549203A
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- bar
- club head
- golf clubs
- flowline
- face portion
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- 238000004519 manufacturing process Methods 0.000 title claims description 38
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005242 forging Methods 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 21
- 238000009826 distribution Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A golf club and munufactureing method thereof. The inventive golf club includes a golf head including a face portion with a ball hitting surface and a neck portion connecting the face portion to a shaft. Grain flows are formed in the golf head, and density of grain flows inside the golf head is made comparable to density of grain flows at a surface layer portion.
Description
Technical field
The present invention relates to golf clubs and manufacture method thereof, relate in particular to club head face portion and bar neck integrally formed golf clubs and manufacture method thereof.
Background technology
The club head portion of golf clubs comprises the club head face portion with striking surface, the bar neck that connects this club head face portion and shaft.In the past, as the golf club head that utilizes the forging mode to make with club head face portion and the bar neck is integrally formed forms, but the problem that exists square stance bar neck to deform easily, for this reason, the overstriking bar neck of having to is difficult to alleviate the mass distribution to the bar neck.In addition, club head face portion utilizes different operations to be shaped respectively with the bar neck, afterwards they is engaged with each other.Therefore, the problem that exists the intensity of the bonding part of club head face portion and bar neck to descend.
At such problem, propose to have the scheme that for example discloses the golf clubs put down in writing in the WO01/056666 brochure etc. in the world.
Yet, disclose in the golf clubs of putting down in writing in the WO01/056666 brochure in the above-mentioned world, exist the flowline skewness in the club head face portion, the intensity of club head face portion that problems such as deviation are arranged because of the position is different with toughness.Be difficult to obtain the problem of good touch when in addition, having brought the golf club striking of using in the past thus.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of golf clubs and manufacture method thereof that flowline is evenly distributed and can obtain good touch in golf club head.
Golf clubs involved in the present invention comprises golf club head, golf club head has the bar neck of the club head face portion, connecting-rod cap face and the shaft that comprise striking surface, flowline is formed in the golf driver head, and the density of the flowline of the density of the flowline of golf club head inside and golf club head skin section is equal extent.
The manufacture method of golf clubs involved in the present invention comprises: thus to bar-like member draw the diameter that reduces this bar-like member drawing operation, make through drawing operation and the diameter of an end of the bar-like member after the extending pull and stretch manufacturing procedure littler, forging process that bar-like member is implemented the operation of bending machining and bar-like member implemented to forge integrally formed club head face portion of processing and bar neck after bending machining than the other end.
Above-mentioned drawing operation preferably includes when guaranteeing flowline the operation that at least a portion of the side face of bar-like member is carried out hammering.
Above-mentioned forging process preferably includes: bar-like member is implemented repeatedly rough forge shaping processing, guaranteed to make bar-like member forge manufacturing procedure near first of net shape under the situation of flowline; Thereby and the drip molding after the rough forge shaping processing is implemented precision forging process the second forging manufacturing procedure that is configured as net shape.
When adopting golf clubs involved in the present invention, flowline is roughly distributed equably in golf club head, obtain good touch.When adopting the manufacture method of golf clubs involved in the present invention, can obtain a kind of flowline roughly equally distributed golf clubs in golf club head.
Above-mentioned and other purpose of the present invention, feature, aspect and advantage will become more clear and definite with reference to following detailed of the present invention in conjunction with the drawings.
Description of drawings
Fig. 1 is the front view of the bar head of golf clubs of the present invention.
Fig. 2 is the cutaway view that schematically shows bar head cross section.
Fig. 3 is the cutaway view of first operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 4 is the cutaway view of second operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 5 is the cutaway view of the 3rd operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 6 is the cutaway view of the 4th operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 7 is the cutaway view of the 5th operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 8 is another cutaway view of the 5th operation in the manufacturing process of expression golf clubs of the present invention.
Fig. 9 is the cutaway view of the 6th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 10 is another cutaway view of the 6th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 11 is the cutaway view of the 7th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 12 is another cutaway view of the 7th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 13 is the cutaway view of the 8th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 14 is another cutaway view of the 8th operation in the manufacturing process of expression golf clubs of the present invention.
Figure 15 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 16 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 17 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 18 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 19 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 20 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 21 is the raw-material cutaway view in each manufacturing process of the present invention.
Figure 22 is the photo in cross section of the club head face portion of the bar head in the related golf clubs of present embodiment.
Figure 23 is the photo in bar neck cross section.
Figure 24 is the photo in cross section of the club head face portion of the club head in the golf clubs of comparative example.
Figure 25 is the cutaway view of the bar neck in the golf clubs of comparative example.
Figure 26 is the curve map of the hardness of the related golf clubs of the hardness of the related golf clubs of expression present embodiment and above-mentioned comparative example.
Figure 27 is the cutaway view of club head face portion at the mensuration position of expression hardness shown in Figure 26.
Figure 28 is the cutaway view of bar neck at the mensuration position of expression hardness shown in Figure 26.
Figure 29 is that sound that expression produces during to the related golf clubs of trial edition embodiment carries out instrumentation and the result's that obtains curve map.
The specific embodiment
Below utilize Fig. 1 to Figure 29 that the related golf clubs of present embodiment and the manufacture method of golf clubs are described.In the embodiment of following explanation, when relating to number, amount etc., except the occasion that special record is arranged, scope of the present invention might not be confined to this number and amount etc.In addition, in the following embodiments, each element might not be necessary except the occasion that special record is arranged for purposes of the invention.
Fig. 1 is the front view of the bar head 10 of golf clubs of the present invention.As shown in Figure 1, bar head 10 comprises the bar neck 12 of club head face portion 11, connecting-rod cap facial 11 and shaft 30 with striking surface 15.
Fig. 2 is the cutaway view that schematically shows the cross section of bar head 10.As shown in Figure 2, be formed with many flowlines 13 continuously in the scope in bar head 10 from bar neck 12 to club head face portion 11.
The major part of flowline 13 extends to club head face portion 11 continuously from bar neck 12, and in club head face portion 11, flowline 13 extends continuously towards a direction.
Like this, in club head face portion 11, flowline 13 extends towards toe 14 with the connecting portion of bar neck 12 from club head face portion 11.Like this, extend continuously from bar neck 12 towards club head face portion 11, can improve the intensity of the connecting portion of club head face portion 11 and bar neck 12 by making flowline 13.
The distribution density of the flowline 13 on the striking surface 15 of club head face portion 11 is identical with the distribution density of the flowline 13 of the inside of club head face portion 11.That is, in club head face portion 11, from striking surface 15 sides to the scope of the back side 16 sides in flowline 13 basic equal distribution.
Herein, the bar head 10 of the golf clubs that present embodiment is related can be realized the homogenising of intensity and toughness, its reason can think evenly to have distributed in bar head 10 cause of flowline 13.
Observe the crystalline texture of club head face portion 11 and can find that it is not a lamellar tissue, but has passed through the good metal hammering at gamut.As seen also improved the hardness of club head face portion 11 thus.
Utilize Fig. 3 to Figure 20 that the manufacture method of the related golf clubs of present embodiment is described.As shown in Figure 3, prepare the bar-like member 21 that constitutes by carbon steel etc.The diameter of this bar-like member 21 for example is about 50mm.
Then, as shown in Figure 4, implement to draw processing (forging processing), thereby form the bar-like member 20 of sectional area less than bar-like member 21.The diameter of bar-like member 20 for example is about 27mm.Draw in the processing at this, except for example while make bar-like member 21 rotation utilize hammer or roll etc. to the side face approximate equality of bar-like member 21 the situation of forging, also comprise the part of the side face of bar-like member 21 do not implemented the situation of forging.
Like this,, can under the state of guaranteeing flowline 13, reduce the diameter of bar-like member 21, form bar-like member 20 by bar-like member 21 is implemented to forge.
Figure 15 is the cutaway view that schematically shows the cross section of bar-like member 21, and Figure 16 is the cutaway view that schematically shows the cross section of bar-like member 20.As Figure 15 and shown in Figure 16, the distribution density of the flowline 13 in bar-like member 20 is greater than the distribution density of the flowline in the bar-like member 21 13.The distribution density of flowline 13 is to judge by observed flowline 13 under common visual state during the cross section according to the observation.
As shown in Figure 5, pull and stretch processing is carried out so that its sectional area reduces in an end of bar-like member 20.This pull and stretch processing for example utilizes roll that one end of bar-like member 20 is implemented rolling processing and realizes.At this moment, as shown in figure 17, note keeping the continuity of the flowline 13 in the bar-like member 20.
Like this, by an end of bar-like member 20 is implemented plastic working, the sectional area of this end reduces, and as shown in figure 17, can improve the density of a distolateral flowline 13 of bar-like member 20.
At this distolateral formation bar neck 12, in another distolateral formation club head face portion 11.Thus, can infer that the density of the flowline 13 of bar neck 12 is higher than the density of the flowline 13 of club head face portion 11.
As long as can make an end plastic deformation of bar-like member 20, reduce the sectional area of bar-like member 20, also can adopt the rolling processing processing in addition.
Then, as Fig. 6 and shown in Figure 180, bar-like member 20 is implemented bending machining.After this, as Fig. 7～shown in Figure 12, the processing that is shaped of the rough forge of implementing three phases.The hammer of this rough forge shaping processing and utilization metal die and one ton is implemented.
In this rough forge is shaped processing,,, make bar-like member 20 plastic deformations by stages in order to ensure flowline complete substantially in the raw material 13 as Figure 19～shown in Figure 21.In rough forge is shaped processing, make bar-like member 20 plastic deformation by stages, flowline 13 is extended continuously from bar neck 12 to club head face portion 11, and flowline 13 also makes flowline 13 distribute equably to the scope of rear side in striking surface 15 sides of club head face portion 11 along the striking surface 15 stratiforms extension of club head face portion 11.
Rough forge shaping processing by this three phases as Figure 11 and shown in Figure 12, can be deformed into the state near net shape, processes the final golf club head that just can be shaped as long as implement precision forging described later.Therefore, need not to append machining, can avoid flowline 13 by partial cutoff in terminal stage.
Then, implementing to carry out final fine finishining after the deburring, implementing precision forging processing, as Figure 13 and shown in Figure 14, thin portion such as shaping groove.Through above operation, under the state of guaranteeing complete substantially flowline 13, can obtain the integrally formed club head 10 of club head face portion 11 and bar neck 12.Then, shaft 30 grades are installed on this bar head 10, just can obtain golf clubs.
Figure 22 is the photo in cross section of the club head face portion 11 of the bar head 10 in the related golf clubs of present embodiment.Figure 23 is the photo in the cross section of bar neck 12.
Figure 24 is the photo in cross section of the club head face portion of the club head in the golf clubs of comparative example.Figure 25 is the cutaway view of the bar neck 12 in the golf clubs of comparative example.
The related golf clubs of comparative example is not implemented the processing of drawing in the manufacture method of the related golf clubs of present embodiment, the bar-shaped carbon steel about using diameter as 27mm at the very start.
The golf clubs of comparative example forms by stretching process, the rough forge shaping processing of three phases, the precision forging processing postforming that the end of this carbon steel is implemented.
As seen, as shown in figure 22, on the cross section of the club head face portion 11 of the related golf clubs of present embodiment, almost do not have spot herein, be formed with uniform flowline 13 from superficial layer to the inside of club head face portion 11.That is, in the related golf clubs of present embodiment, not only in the club head face portion 11 of club head 10, at bar neck 12, flowline also evenly, form to high-density.
As seen on the other hand, as shown in figure 24, can see spot on the cross section of the club head face portion 11 of the golf clubs of comparative example, the flowline 13 that forms in the photons of club head face portion 11 is more intensive than the flowline 13 that the inside in club head face portion 11 forms.
Like this, the related golf clubs of present embodiment is compared being more evenly distributed of flowline 13 with the golf clubs of comparative example.And the related golf clubs of present embodiment is compared club head face portion 11 inside with the golf clubs of comparative example the density of flowline 13 is bigger.
As shown in figure 23, even the visible related golf clubs of present embodiment does not have spot yet on the cross section of bar neck 12, the inside from the superficial layer of bar neck 12 to bar neck 12 has formed uniform flowline 13.
On the other hand, as shown in figure 25, in the related golf clubs of comparative example, on the cross section of bar neck 12, can see the muscle portion that the density of flowline 13 on the bearing of trend of bar neck 12 becomes sparse at the central portion of bar neck 12.Therefore as seen, in comparative example, compare the central portion of bar neck 12, flowline 13 more concentrates on photons.
Like this, the bar neck 12 of the golf clubs that visible present embodiment is related is compared with the bar neck 12 of the golf clubs of comparative example, can more be formed uniformly flowline 13 from photons to the central portion of bar neck 12.
In addition, the density of the flowline 13 that forms on greater than bar neck 12 in the density of the flowline 13 that forms on the bar neck 12 of the related golf clubs of present embodiment at the golf clubs of comparative example.
Figure 26 is the curve map of the hardness of the related golf clubs of the hardness of the related golf clubs of expression present embodiment and above-mentioned comparative example.
In this Figure 26, the longitudinal axis is represented Vickers hardness (Hv).In curve map, solid line represents that (Vickers hardness of P1～P12), dotted line are represented each position (Vickers hardness of P21～P32) of the golf clubs that comparative example is related for each position of the golf clubs that present embodiment is related.
Figure 27 and Figure 28 represent each determination part bit position.Herein, as shown in figure 26, the hardness at nearly all position of the golf clubs that present embodiment is related all is higher than the hardness of the related golf clubs of comparative example.
Herein, comparatively speaking, be positioned at the position P2 of golf clubs inside, position P3, position P6, position P7, position P11, position P12 place, the difference of the hardness of the golf clubs that the hardness of the golf clubs that present embodiment is related and comparative example are related increases.
Particularly the difference of hardness at the bar neck is bigger, and 20 (Hv) are arranged approximately.
Why the hardness of the golf clubs that present embodiment is related is like this greater than comparative example, can think because the distribution density of the flowline of the related golf clubs of above-mentioned such present embodiment greater than the distribution density of the flowline of the golf clubs of comparative example, and the cause that flowline distributes more equably in the present embodiment.
As mentioned above, owing to can improve the hardness of the bar head 10 of golf clubs, thereby also can improve intensity, can realize the thinning of the thickness of club head face portion 11 and bar head 10.
As mentioned above, by realizing the thinning of club head face portion 11 and bar head 10, help the design of centre of gravity of bar head 10.
Particularly, be configured to be positioned at the back lower place, just can enlarge happy district, or make sweet spot, can design the weight balancing of bar head 10 etc. thus near intersection (Japanese: ミ one ト Port イ Application ト) by center of gravity with bar head 10.Sweet spot is meant that center of gravity from irony bar head is towards the vertical line of club head face and the intersection point of club head face.
Following form 1 expression be the result that related golf clubs of ten player's trial edition embodiments and the related golf clubs (relatively part) of above-mentioned comparative example impact, wherein eight players' result is " touch is good ".
Form 1
| The player | Estimate |
| The player 1: the professional player | Compare with comparing part, ball is bitten club head face easily.Easily miss and Draw are separately hit, easily control. |
| Player 2:HC:5, H/S:46m/s | To compare touch softer with part relatively.Ball is bitten club head face easily. |
| Player 3:HC:3, H/S:44m/s | Compare square stance with the comparison part and feel more stable, the bar core is arranged. |
| Player 4:HC:6, H/S:47m/s | To compare touch softer with part relatively, and good sense of stability is arranged. |
| Player 5:HC:10, H/S:43m/s | Compare with comparing part, ball is climbed up club head face.Touch is also very soft. |
| Player 6:HC:11, H/S:40m/s | Compared sense of stability with comparing part, heavier touch has been arranged.Square stance is felt good. |
| Player 7:HC:9, H/S:42m/s | To compare touch softer with part relatively.There is ball to climb up the sensation of club head face. |
| Player 8:HC:3, H/S:46m/s | Compare with comparing part, ball is climbed up club head face, thereby sensation is controlled ball easily. |
| Player 9:HC:12, H/S:46m/s | To compare touch softer with part relatively, and it is more stable that square stance is felt. |
| Player 10:HC:14, H/S:44m/s | Compare with comparing part, ball is climbed up club head face.Touch is also very soft. |
HC represents almost, H/S indication rod head speed.Once entering the left side of flyball line after miss is represented to bat, the curved ball that bears right was gradually then once entering the right side of flyball line after Draw is represented to bat, and curved ball then gradually bears left.
Like this, as seen, the related golf clubs of present embodiment can obtain good touch.
The present inventor etc. find the touch sound of batting exactly through great efforts.That is, the touch that the player shown in the form 1 describes with various statements, but this batting sound that all comes from.Especially find that good touch is meant the batting sound of lower, the residual long period lingering sound of frequency.Figure 29 is that sound that expression produces during to the related iron type golf club of trial edition embodiment carries out instrumentation and the result's that obtains curve map.The longitudinal axis of this curve map is represented the frequency (KHz) of sound, and transverse axis is represented the time (ms).Regional P1, P2 with solid line and enclosed with dashed lines in the curve map represents the bigger zone of sound size (decibel (dB)).
As shown in figure 29, when as seen using the related golf club striking of present embodiment, produce bigger sound at the regional P1 that impales by solid line with in by the regional P2 of enclosed with dashed lines.
By the sound of the regional P2 of enclosed with dashed lines is to come from the nuzzle up sound on ground of bar head that the bar head scratches the sound of air and golf clubs, with batting sound direct relation not.And the sound of the regional P1 that is impaled by solid line is represented the bar head of golf clubs and golf collision and produce impact sound.
The sound that is somebody's turn to do the regional P1 that is impaled by solid line is distributed in the range of lower frequency, and can find lingering sound for some time.
Therefore, impact the sound that sound is lower frequency during as seen with the related golf club striking of present embodiment, leave the lingering sound of long period, this has just caused the good result of touch of the related golf clubs of present embodiment in the form 1.
In the above-described embodiment, the situation that applies the present invention to the irony club is illustrated, but thought of the present invention also is applicable to wooden club.
The present invention is applicable to the club head of golf clubs.
Provided detailed description and illustration at the present invention above, but should clearly understand, foregoing is only as illustration and example and be not construed as limiting, and scope of the present invention is explained by the term in the appending claims.
Claims (5)
1. a golf clubs is characterized in that, comprises golf club head, and described golf club head has: comprise the club head face portion of striking surface and the bar neck that connects described club head face portion and shaft,
Flowline is formed in the described golf club head, and the density of the density of the described flowline of described golf club head inside and the described flowline of described golf club head skin section is equal extent.
2. golf clubs as claimed in claim 1 is characterized in that, in described club head face portion, described flowline extends along the face parallel with described striking surface.
3. the manufacture method of a golf clubs is characterized in that, comprising:
Bar-like member is drawn the drawing operation of the diameter that reduces this bar-like member;
Make through described drawing operation and the diameter pull and stretch manufacturing procedure littler of an end of the described bar-like member after extending than the other end;
Described bar-like member is implemented the operation of bending machining; And
Thereby after described bending machining, described bar-like member is implemented to forge the forging process of integrally formed club head face portion of processing and bar neck.
4. the manufacture method of golf clubs as claimed in claim 3 is characterized in that, described drawing operation is included in when guaranteeing described flowline the operation that at least a portion of the side face of described bar-like member is carried out hammering.
5. the manufacture method of golf clubs as claimed in claim 3 is characterized in that,
Described forging process comprises:
Described bar-like member is implemented repeatedly rough forge shaping processing, guaranteed to make bar-like member forge manufacturing procedure near first of net shape under the situation of flowline; And
Thereby the drip molding that rough forge is shaped after processing is implemented the second forging manufacturing procedure that precision forging processing is configured as net shape.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008093428 | 2008-03-31 | ||
| JP2008093428 | 2008-03-31 | ||
| JP2009059146 | 2009-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101549203A true CN101549203A (en) | 2009-10-07 |
Family
ID=41153838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101283543A Pending CN101549203A (en) | 2008-03-31 | 2009-03-30 | Golf club and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101549203A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989143A (en) * | 2012-12-14 | 2013-03-27 | 黄荣贤 | Method for manufacturing golf club head |
| CN103692150A (en) * | 2012-09-27 | 2014-04-02 | 苏基宏 | Method for manufacturing integrally formed forged golf club head |
| KR20190004334A (en) * | 2017-03-31 | 2019-01-11 | 미즈노 가부시키가이샤 | Iron Golf Club Head Manufacturing Method, Iron Golf Club Head, and Iron Golf Club |
| CN111001750A (en) * | 2019-12-25 | 2020-04-14 | 艾诺克(成都)机械制造有限公司 | Forging process for iron club head of golf club |
-
2009
- 2009-03-30 CN CNA2009101283543A patent/CN101549203A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692150A (en) * | 2012-09-27 | 2014-04-02 | 苏基宏 | Method for manufacturing integrally formed forged golf club head |
| CN102989143A (en) * | 2012-12-14 | 2013-03-27 | 黄荣贤 | Method for manufacturing golf club head |
| KR20190004334A (en) * | 2017-03-31 | 2019-01-11 | 미즈노 가부시키가이샤 | Iron Golf Club Head Manufacturing Method, Iron Golf Club Head, and Iron Golf Club |
| KR102077417B1 (en) | 2017-03-31 | 2020-02-13 | 미즈노 가부시키가이샤 | Manufacturing Method of Iron Golf Club Head, Iron Golf Club Head, and Iron Golf Club |
| US10688354B2 (en) | 2017-03-31 | 2020-06-23 | Mizuno Corporation | Method for manufacturing iron golf club head, iron golf club head, and iron golf club |
| US11007411B2 (en) | 2017-03-31 | 2021-05-18 | Mizuno Corporation | Method for manufacturing iron golf club head, iron golf club head, and iron golf club |
| CN111001750A (en) * | 2019-12-25 | 2020-04-14 | 艾诺克(成都)机械制造有限公司 | Forging process for iron club head of golf club |
| CN111001750B (en) * | 2019-12-25 | 2021-09-17 | 艾诺克(成都)机械制造有限公司 | Forging process for iron club head of golf club |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091007 |