CN1372991A

CN1372991A - Golf club and making method thereof

Info

Publication number: CN1372991A
Application number: CN01137920A
Authority: CN
Inventors: 鹤卷政卫
Original assignee: Endo Manufacturing Co Ltd
Current assignee: Endo Manufacturing Co Ltd
Priority date: 2001-03-05
Filing date: 2001-11-05
Publication date: 2002-10-09
Also published as: HK1047058A1; TW557223B; JP2002253706A; US20020123394A1

Abstract

A golf club whose position of the C.G. is easy to adjust, enabling a large-sized head. A shaft 7 is attached to a head 1 made by combining a plurality of metal shells 11, 12, 13, 14. The respective shells 11, 12, 14 are formed into a preset thickness such as the thickness 'a' by a grinding process, using shot blasting S. Thus the reduction in weight is resulted by the grinding process, thus enabling the free distribution of the weight. As a result, it becomes easier to adjust the position of the C.G., realizing a golf club head with a larger volume.

Description

Golf clubs and manufacture method thereof

Technical field

The present invention relates to golf clubs and manufacture method thereof.

Background technology

Disclose the golf clubs that is called so-called metal wood of the prior art in the spy opens Fig. 1 etc. of flat 11-19254 communique, this club is installed in handle that front shell, end shell, side face shell and top shell by the shell that separates as metal system is combined into one and on the head that forms.One of known production method of the head of this golf clubs is to form with the die-cut part of light sheet and with its bending ram after the regulation shape again with each part soldering group altogether.In this case, make each part in stamped, form roughly homogeneous thickness.For example, when as described above head part being split into front shell, end shell, side face shell and top shell and making part, thickness separately roughly is uniformly, and is needed nose heave in order to make, and its size is restricted naturally.Even in this way, material adopts titanium alloy, though can make the large-scale head that volume is the 300cc level, because weight is restricted, controls position of centre of gravity so other balance weight will be installed, and this may be unworkable.

Ways of addressing this issue will be guaranteed the thickness of the impact of anti-strikes such as front shell and periphery, bottom as far as possible, and other parts are than thin getting final product of the prior art.Specifically, be to engage with thin plate at the position of intending attenuate, or number 0008 described chemistry as the special paragraph of opening flat 8-155062 communique and wash the method for cutting, promptly surface and/or inner surface whole or at least a portion of each face are carried out chemical grinding, adjust the weight and the thickness of hollow club head material.

But this method exists following problems.At first, partly paste the method for thinner sheet material,, also when carrying out solder joints, make part deformation owing to its heat affecting meeting except increasing number of spare parts, increasing the cost.If thin plate, then easier being influenced by heat.Therefore, make the shape instability of head.On the other hand, chemical grinding, especially titanium can absorb hydrogen and become fragile when titanium is carried out pickling.The beta titanium alloy that particularly present head materials are adopted, the possibility that this situation occurs is bigger.

; shot-peening is grinding material (shot-peening material) to be ejected on the surface of material and the processing method of carrying out grinding with compressed air, centrifugal force etc., and the method that forms head with this processing method has for example known spy to open the manufacture method and the special golf clubs in the flat 9-182818 communique and the manufacture method thereof etc. opened of the sandblast imprint method of the glof club head in the flat 61-232875 communique, the glof club head in No. 2865127 communique of special permission.The prior art of described first method, be with mask layer be adjacent to head by section on, by being sprayed abrasive particle toward this by facet and on head, forming mint-mark (hurdle, second page of lower-left the 2nd～6 row).The prior art of described second method is the manufacture method that forms the glof club head of the surface at least of head and bottom surface with magnesium base alloy, and it is to clean surperficial method (paragraph 0005) by magnesium base alloy being carried out bead.The prior art of the third method is to form trickle concavo-convex method (paragraph 0005) by carry out blasting treatment etc. on the surface at least of head.

But, though the formation mint-mark in this method for making golf club head that utilizes bead, clean, trickle concavo-convex etc. be that everybody knows,, adjust the technological thought of outer casing thickness separately and but do not mention.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of golf clubs and manufacture method thereof, this club can be adjusted position of centre of gravity easily, and can have more large-scale head by controlling the wall thickness of golf club head arbitrarily.

Technical solution of the present invention 1 described golf clubs is installed handle on the head that forms being combined into one by a plurality of metal shells that separate, and makes at least a portion of the described shell that separates form specific thickness by the shot-peening grinding.

According to the structure of technical solution of the present invention 1, can adjust thickness by the shot-peening grinding.

Technical solution of the present invention 2 described golf clubs are to utilize at least a portion on the same one side of the described shell that separates of shot-peening grinding to form the technical scheme 1 described golf clubs of different-thickness.

According to the structure of technical scheme 2, can adjust same thickness to carrying out grinding with at least a portion on the one side.

The manufacture method of technical solution of the present invention 3 described golf clubs, this golf clubs is combined into one at the shell that is separated by a plurality of metal systems and on the head that forms handle is installed, and carries out the thickness adjustment by at least a portion of the described shell that separates of shot-peening grinding.

According to the structure of technical scheme 3, with the shot-peening grinding shell that separates is carried out grinding and can form specific thickness at the regulation position.

Description of drawings

Fig. 1 is the partial cut-out axonometric drawing of expression one embodiment of the invention.

Fig. 2 is the axonometric drawing of expression one embodiment of the invention.

Fig. 3 is partly cut-away's front elevation of expression one embodiment of the invention.

Fig. 4 is the decomposition axonometric drawing of expression one embodiment of the invention.

Fig. 5 is the rearview of the front shell of expression one embodiment of the invention.

Fig. 6 is the end shell of expression one embodiment of the invention, the ground plan of all shells of side.

Fig. 7 is the plane of the top shell of expression one embodiment of the invention.

The specific embodiment

Below, with reference to a description of drawings example of the present invention.Titanium alloy club head (calling head in the following text) 1 comprises that the handle 7 that clamping device (not shown) is installed is connected with the upper end of recess (ホ one ゼ Le) 6 as front shell 2, the top shell 3 as top, end housing department 4 and the side perimembranous 5 of the face of playing ball.Described head 1, welds with the corresponding top shell 12 of end face 3, with the corresponding end shell 13 in bottom 4 and with each edge parts of the corresponding all shells 14 of side of side perimembranous 5 and to be bonded into one and to form at the shell that a plurality of metal systems are separately separated, the front shell 11 corresponding with the surface element opened in 3 minutes 2 among the embodiment.Described front shell 11, top shell 12, end shell 13 and side week shell 14, be again its bending ram to be formed titanium-alloy thin-plate is die-cut, each edge is welded be combined into one and form.In addition, method manufacturings such as each also available heat forging of

shell

11,12,13,14, casting.

Be provided with in a side of top shell 12 form recess (ホ one ゼ Le) half half lack recess (ホ one ゼ Le) shell 15.Described side week shell 14 a side be provided with form recess (ホ one ゼ Le) 6 half half lack recess (ホ one ゼ Le) shell 16.And, lack the edge part of recess (ホ one ゼ Le) shell 15,16 and described front shell 11 etc. with welding method with described half and be bonded into one.In the recess (ホ one ゼ Le) 6 that forms by described half scarce recess (ホ one ゼ Le) shell 15,16, be inserted with the pipe 17 that handle 7 usefulness are installed.

Each

shell

11,12,13,14 is adjusted thickness by the bead of carrying out grinding on the surface that grinding material (shot-peening material) is ejected into material with compressed air, centrifugal force etc.That is to say, utilize the grinding of bead, be with the injection of 0.5MPa for example press, with at a high speed with the grinding material S of compositions such as metals such as iron, silicon carbide, oxide, be surface specifically with striking works such as green silicon carbide GC#80, grinding is carried out on its surface, and its grinding face is the outer surface or the inner surface of

shell

11,12,13,14.By this grinding, the central portion thickness A that for example establishes front shell 11 is that the thickness a that is surrounded the periphery of representing with chain-dotted line after 2.6mm, the grinding is 1.8mm, makes central part form thicklyer.Top shell 12, the thickness B of establishing periphery be after 1.0mm, the grinding to be surrounded the central portion thickness b that represents with chain-dotted line be 0.8mm, make periphery form thicklyer.In addition, form one end shell 13 and side week shell 14, the thickness C of establishing end shell 13 be after 1.15mm, the grinding with chain-dotted line be surrounded represent side week shell 14 thickness c be 0.8mm, make end shell 13 form thicklyer.

After carrying out the thickness adjustment like this and forming each

shell

11,12,13,14, as required with after the processing method for stamping punch process established practice setting shape, again each edge part is welded, lack recess (ホ one ゼ Le) shell 15,16 by described half simultaneously and form recess (ホ one ゼ Le) 6, and will install with pipe and 17 be inserted in the recess (ホ one ゼ Le) 6, handle 7 is inserted in this installations with managing in 17.

As mentioned above, in described embodiment, golf clubs is that handle 7 is installed on the head 1 that forms being combined into one by a plurality of shells that separate 11,12,13,14, it is the specific thickness portion of a, b, c that the grinding of shot S by bead makes the described shell that separates 11,12,13,14 form thickness, so the

shell

11,12,13,14 that for example respectively separates can alleviate the weight about 5g respectively, because the weight that can freely distribute it to alleviate, so adjust position of centre of gravity easily, also can provide more large-scale head.And, to compare with chemical treatment, the maintenance aspect of the stability of its shape, cost, intensity also can be more superior.In addition, be thickness a, b, the c of head 1 by the thickness of adjusting the

shell

11,12,13,14 that respectively separates, not only adjustable bulk wight heart position, but also can adjust the moment of inertia etc. according to the position of grinding.

In addition, front shell 11 carries out grinding to periphery like that as described, make its thickness a thinner than central portion thickness A, then make at least a portion form different thickness portions with one side by the shot-peening grinding, even also can carry out the thickness adjustment being called on the same one side of surface element 2, except weight reduction, can make the distribution of weight precise treatment, also can improve the free degree of design.

And, handle 7 is installed in by a plurality of metal sheets that separate 11,12,13,14 is combined into one and the manufacture method of golf clubs on the head 1 that forms, by grinding with the shot S of bead, at least a portion thickness to the described shell that separates 11,12,13,14 is adjusted, even titanium alloy etc. also can stably make reduced thickness.Again because of utilizing the shot-peening grinding grinding material S can be collided on the regulation position, so make the regulation position of the

shell

11,12,13,14 that respectively separates form specific thickness easily.And, with chemical treatment and paste thin plate and compare, more superior aspect the maintenance of the stability of shape, cost, intensity etc.

In described embodiment,,, can handle continuously so can realize automation owing to be that the

shell

11,12,13,14 that will separate is arranged on and carries out grinding on the turntable T.

The present invention is not limited to described embodiment, can carry out various modification in main idea scope of the present invention.Be the situation of expression hollow metal head in an embodiment, still, also can use the iron head or touch the head of handle.In addition, be 3 the examples that position carried out grinding of expression among the embodiment, but also can carry out grinding at least 1 shell in front shell 11, top shell 12, end shell 13, all shells 14 of side to all shells 14 of side in all shells 14 of front shell 11, top shell 12, end shell 13 and side.In addition, be under part status, to carry out grinding among the embodiment, still, also can carry out the shot-peening grinding with state or the finished product state that methods such as welding engage in blank state, part.And, also can stay a part and carry out grinding from thicker metallic plate, will stay part as balance weight.The one-piece type head of this balance weight can not produce the phenomenon that balance weight comes off.

Technical solution of the present invention 1, handle is located at that the shell that is separated by a plurality of metal systems is combined into one and golf clubs on the head that forms, be to make at least a portion of the described shell that separates form the golf clubs of specific thickness, the thickness of freely adjusting the shell that separates can be provided, adjust the golf clubs of the more large-scale head of having of position of centre of gravity easily by the shot-peening grinding.

Technical solution of the present invention 2, be to utilize the shot-peening grinding to make at least a portion of the same one side of the described shell that separates form the technical scheme 1 described golf clubs of different thickness, even on, by thickness is adjusted with one side, except weight reduction, dispensed weight critically also.

The manufacture method of technical solution of the present invention 3 described golf clubs, be on the head that forms forming one handle to be installed by a plurality of metal shells that separate, the manufacture method of this golf clubs is to utilize the shot-peening grinding that at least a portion of the described shell that separates is carried out the thickness adjustment, because being carried out grinding, the shell that separates to form specific thickness at the regulation position, so compare with chemical treatment, the maintenance aspect of the stability of its shape, cost, intensity is more superior.

Claims

1. a golf clubs is installed handle on the head that forms in that a plurality of metallic casing of separating are combined into one, and it is characterized in that, makes at least a portion of the described shell that separates form specific thickness by the shot-peening grinding.

2. golf clubs as claimed in claim 1 is characterized in that, makes at least a portion on the same one side of the described shell that separates form different thickness with the shot-peening grinding.

3. the manufacture method of a golf clubs, this golf clubs is combined into one at the piece that a plurality of metal systems are separated and on the head that forms handle is installed, and it is characterized in that, makes at least a portion of the described shell that separates carry out the thickness adjustment with the shot-peening grinding.