JP6014191B2 - Method for manufacturing face plate of golf club head - Google Patents

Description

  The present invention relates to a method for manufacturing a golf club head accessory, and more particularly to a method for manufacturing a face plate of a golf club head.

  In general, by forming an unequal thickness structure inside the face plate of a golf club head, the area of the sweet spot of the hit ball can be increased, and the hit performance of the golf club head can be further improved. A method for manufacturing a face plate of an existing golf club head includes the following steps. The material is supplied to the plate material with the same thickness by the computer typesetting method, and the workpiece is cut by laser cutting the above plate material using laser equipment to form the workpiece. By performing rough forging extrusion using a stage and a hydraulic press, the shape of the middle contour is initially formed, and the mold corresponding to the middle contour of the workpiece is formed on the mold used in the rough forging manufacturing process. By being formed, the workpiece is formed so that the middle part bends toward the back during forging, and by milling the front of the workpiece using a CNC machine, Obtaining a workpiece having the required thickness standard and preforming the workpiece using a hydraulic press, the workpiece has a curved radius range of 1 Forming a bent shape between 0 and 500 millimeters, and pressing the workpiece vertically in a vertical direction using a press machine or a hydraulic press, thereby forming a peripheral edge of the workpiece. Bending accurately to the periphery of the workpiece by later folding it into a “C” or “L” shape and pressing the workpiece in a vertical direction vertically using a hydraulic press A step of performing shaping, and a step of performing ultrasonic cleaning on the workpiece using an ultrasonic cleaner.

  Briefly, referring to FIG. 7, the steps in the method for manufacturing the face plate of the existing golf club head are performed in the order of material preparation, forging (rough forging, fine forging), milling, and bending. Is. Thus, a face plate having an unequal thickness structure is rapidly formed by a forging manufacturing process. As an example of the method of manufacturing the above-mentioned existing golf club head face plate, a patent application has already been filed in China Publication No. 102981444 “Method of Manufacturing Golf Club Head Face and Golf Club Head Face Structure” (see Patent Document 1) , And China publication No. 100586514, “Method for manufacturing face structure of golf club head with uneven distribution of thickness” (see Patent Document 2).

Chinese publication No. 102989144 Chinese public notice No. 100586514

  However, in the above-described method for manufacturing the face plate of the present golf club head, even if it is a manufacturing process of rough forging or fine forging, all of the male mold and female mold are clamped together. By applying a positive molding force to the two surfaces facing the flat plate material, one surface of the plate material is formed to correspond to the shape of the male mold and another surface facing each other Is formed so as to correspond to the shape of the female mold (as shown from the first stage to the second stage in FIG. 1), there is no obvious change in the thickness of the plate material as a whole. . As described above, in order to form the unequal thickness structure of the face plate, the maximum thickness of the unequal thickness structure that attempts to form the thickness of the flat plate material (the shortest distance between the two opposing surfaces of the plate material). In order to correspond to the numerical values, it is necessary to prepare a flat plate material having a sufficient thickness at the time of material preparation. For example, if the maximum thickness value of the unequal thickness structure to be formed is 9 mm, a flat plate thickness before forging must be prepared corresponding to 9 mm, And when the numerical value of the maximum thickness of the unequal thickness structure to be formed is 5 mm, it is necessary to prepare a flat plate material corresponding to 5 mm before forging. Furthermore, since a large amount of material is milled after the subsequent press molding, not only is the raw material wasted, but there is a problem that the milling blade is also consumed concomitantly, so it is difficult to reduce the cost. There was a problem.

  Table 1 is a list of data relating to the molding of a face plate having an unequal thickness structure using the existing manufacturing method described above. As can be seen from Table 1, there is very little material that is actually molded into the face plate product, and overall, the material acquisition rate (ie face plate weight / flat plate weight x 100) is only about Since it was 25% to 55%, it was necessary to improve effectively.

  The present invention was invented in view of such problems, and its first object is to increase the material acquisition rate at which materials are converted into finished products, thereby reducing the waste of raw materials. An object of the present invention is to provide a method for manufacturing a face plate of a club head.

  A second object of the present invention is to provide a method for manufacturing a face plate of a golf club head that can extend the service life of a cutting tool for milling by keeping the consumption speed of the cutting tool for milling low.

  In order to achieve the above object, a method for manufacturing a face plate of a golf club head according to the present invention includes a material preparation step, a forming step, and a milling step. In the material preparation stage, a plate material having a thickness of 2 to 7 mm is prepared. The plate material includes one opposing first surface and one second surface, and the first surface is divided into one unequal thickness structure forming area and one peripheral area, and the peripheral area is the unequal one. Distributed on the outer periphery of the thick structure forming area. In the molding step, the plate material obtained in the material preparation step is press-molded, and the material of the plate material is concentrated on the first surface, thereby forming one unequal thickness structure in the unequal thickness structure molding area. Form. One maximum thickness is formed between the first surface and the second surface, and the maximum thickness is larger than the thickness of the plate obtained in the material preparation stage. In the milling step, one face is formed by cutting the second surface of the plate material obtained in the forming step. The weight of the plate after the milling step is 30% to 65% of the weight of the plate obtained in the material preparation step.

  Further, according to the method of manufacturing the face plate of the golf club head according to the present invention, the maximum thickness of the plate material after the molding step is 1.15 times to 1.1 times the thickness of the plate material obtained in the material preparation step. It can also be tripled. Further, at the time of forming, the material of the plate material is concentrated on the first surface, and at the same time, the plate material is also subjected to forming and is curved, and at the stage of milling, the plate material obtained at the forming step is the second one. One arc-shaped face can be formed by cutting and modifying two surfaces. The curvature radius at which the plate material appears as a face is 160 to 600 millimeters, and the center of curvature is located on the first surface side.

A method of manufacturing a face plate for a golf club head according to the present invention, sheet material obtained in the stage of the material preparation of a plate material of stainless steel, the maximum thickness of the plate material of the stainless steel is 2 millimeters, through the steps of the molding The latter maximum wall thickness can also be 2.3 millimeters. Further, in the plate material of the plate material is a titanium alloy obtained in step above material preparation, the maximum thickness of the plate material of the titanium alloy is 3 millimeters, the maximum thickness of after a stage of the molding is a 3.5 mm You can also. Further, in the plate material of the plate material is a titanium alloy obtained in step above material preparation, the maximum thickness of the plate material of the titanium alloy at 3.5mm maximum thickness of after a stage of the molding is a 4 mm You can also. Further, in the plate material of the plate material is a titanium alloy obtained in step above material preparation, the maximum thickness of the plate material of the titanium alloy is 4 millimeters, also the maximum thickness of after a stage of the molding is 5 mm it can. Further, in the plate material of the plate material is a titanium alloy obtained in step above material preparation, the maximum thickness of the plate material of the titanium alloy is 5 millimeters, the maximum thickness of after a stage of the molding is a 6.2 mm You can also. Furthermore, plate material obtained in the stage of the material preparation of a plate material of titanium alloy, the maximum thickness of the plate material of the titanium alloy is 6 millimeters, the maximum thickness of after a stage of the molding is a 7.6 mm You can also. Furthermore, plate material obtained in the stage of the material preparation of a plate material of titanium alloy, the maximum thickness of the plate material of the titanium alloy is 7 millimeters, the maximum thickness of after a stage of the molding is a 9.1 mm You can also.

  According to the method for manufacturing a face plate of a golf club head of the present invention, there is an advantage that waste of raw materials can be reduced by increasing the material acquisition rate at which the material is converted into a finished product.

  According to the method for manufacturing a face plate of a golf club head of the present invention, there is an advantage that the service life of the cutting tool for slicing can be extended by suppressing the consumption speed of the cutting tool for milling.

FIG. 1 is a flowchart of a method for manufacturing a face plate of a golf club head according to the present invention. FIG. 2 is an explanatory diagram of a three-dimensional structure of a plate material obtained through the material preparation stage according to the first embodiment of the present invention. FIG. 3a is an explanatory diagram of a cross-sectional structure of a plate material obtained through a material preparation stage according to Embodiment 1 of the present invention. FIG. 3b is an explanatory diagram of a cross-sectional structure of a plate material obtained through the forming stage according to the first embodiment of the present invention. FIG. 3 c is an explanatory diagram of a cross-sectional structure of a plate material obtained through the milling step according to the first embodiment of the present invention. FIG. 3d is an explanatory diagram of a cross-sectional structure of a plate material obtained through a step of bending and milling according to the first embodiment of the present invention. FIG. 4 is an explanatory diagram of a cross-sectional structure of another form of plate material obtained through the forming step according to the first embodiment of the present invention. FIG. 5 is an explanatory diagram of a cross-sectional structure of another form of plate material obtained through the forming step according to the first embodiment of the present invention. FIG. 6 a is an explanatory diagram of a cross-sectional structure of a plate material obtained through a material preparation stage according to Embodiment 2 of the present invention. FIG. 6B is an explanatory diagram of a cross-sectional structure of a plate material obtained through the forming stage according to the second embodiment of the present invention. FIG. 6 c is an explanatory diagram of a cross-sectional structure of a plate material obtained through the milling step according to the second embodiment of the present invention. FIG. 7 is an implementation explanatory view of a method for manufacturing a face plate of an existing golf club head.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a flowchart of a method for manufacturing a face plate of a golf club head according to the present invention. Referring to FIG. 1, the method for manufacturing a face plate of a golf club head according to the first embodiment of the present invention mainly includes one material preparation stage S1, one molding stage S2, and one milling stage S3. . In the forming step S2, one surface of the plate 1 obtained in the material preparation step S1 is press-formed into an unequal thickness structure 13, and further in the milling step S3, another plate 1 obtained in the forming step S2 is formed. A face plate having an unequal thickness structure 13 is formed by milling one surface.

  FIG. 2 is an explanatory diagram of a three-dimensional structure of a plate material obtained through the material preparation stage in Example 1 of the present invention, and FIG. 3A is a diagram of the plate material obtained through the material preparation stage in Example 1 of the present invention. It is explanatory drawing of a cross-sectional structure. Referring to FIGS. 2 and 3a, in the material preparation stage S1 of the present invention, one plate material 1 is prepared and prepared for the subsequent processing. More specifically, in this embodiment, a single cutting device (for example, a laser cutting machine) is used to cut one base material into a plurality of plate members 1 having a shape close to the outer edge contour of the finished product, and the subsequent steps. Can be provided in the manufacturing process.

  The plate 1 includes one first surface 11 and one second surface 12 facing each other, and one thickness T1 is formed between the first surface 11 and the second surface 12. The material of the plate 1 is preferably a metal member having relatively high elastic deformation performance or vibration absorption performance, such as carbon steel, stainless steel (for example, 17-4PH stainless steel), alloy steel, nickel alloy, cast iron, superalloy steel. , Ferro-manganese-aluminum alloy, titanium alloy, copper alloy, aluminum alloy, magnesium alloy, or a combination of these metal materials, preferably stainless steel and titanium alloy. The first surface 11 is divided into one unequal thickness structure forming area A and one peripheral area B, and the peripheral area B is distributed on the outer peripheral side of the unequal thickness structure forming area A.

  In addition, the plate 1 is used for manufacturing a face plate of a golf club head. The maximum thickness of the face plate having an unequal thickness structure is generally about 2 to 9 mm. However, in the manufacturing method of the present invention, the thickness of the plate 1 increases after the processing in the forming step S2. This makes it possible to create an unequal thickness structure that is thicker than the thickness of the original plate material 1 (this will be described in detail later). Therefore, in the material preparation stage S1, a relatively thin plate material 1, for example, a plate material Can be selectively used with a thickness of 2 to 7 millimeters, and preferably the thickness of the plate is uniform.

  FIG. 3b is an explanatory diagram of a cross-sectional structure of a plate material obtained through the forming stage according to the first embodiment of the present invention. 1, 2 and 3b, in the molding step S2 of the present invention, the plate material 1 obtained in the material preparation step S1 is press-molded, and the material of the plate material 1 is concentrated on the first surface 11. Thus, one unequal thickness structure 13 is formed in the unequal thickness structure forming area A. One maximum thickness T2 is formed between the first surface 11 and the second surface 12, and the maximum thickness T2 is formed larger than the thickness T1 of the plate 1 obtained in the material preparation stage S1.

  More specifically, the plate material 1 obtained in the material preparation stage S1 is placed in a set of molds (not shown) and subjected to press molding on the plate material 1 through at least one press or forging. . For example, taking a forging method as an example, by limiting the plate material 1 to a mold, when the first surface 11 and the second surface 12 are pressed, the material of the plate material 1 diffuses outside. In addition, since the material of the plate 1 can be reliably concentrated on the first surface 11, the plate 1 having the unequal thickness structure 13 can be obtained.

  In addition to the form shown in FIG. 3 b, one recess can be forged at the central portion of the unequal thickness structure 13. Alternatively, by forging a protrusion as shown in FIG. 4, one flat surface is formed at a portion where the unequal thickness structure 13 is thickest. Or it can adapt to the hitting performance of various golf club heads by further forging into a ladder shape as shown in FIG.

  Table 2 is a list of data before and after press forming of the plate 1 by using the manufacturing method of the present invention. As can be seen from Table 2, by pressing the plate 1 using the manufacturing method of the present invention, the thickness of the local portion of the plate 1 can be reliably increased, and the thickness of the plate 1 after press forming is increased. The increase rate and the thickness of the plate 1 before press forming have a directly proportional relationship. In other words, the thicker the plate 1 is before press molding, the easier it is to perform press molding, and the thickness increase rate is relatively high.

  In addition to this, in order to enhance the effect of press forming on the plate material 1, in the forming step S2, one rough forming step S21 and one thin forming step S22 can be sequentially performed. In the rough mold forming step S21, the plate 1 and a pair of relatively simple curved molds are heated, the plate 1 is placed in the mold, and press molding is performed on the plate 1 with the mold. By performing the above, it is possible to initially form a form that approximates the unequal thickness structure 13 on the first surface 11 of the plate 1. Here, it can be easily understood by engineers having ordinary knowledge belonging to the technical field of the present invention that the heating temperature set for the plate 1 and the mold differs depending on the material of the plate 1. The heating temperature preferably does not exceed the crystal melting temperature of the plate 1.

  In addition, by forming a single antioxidant layer on the surface of the plate 1 selectively according to the properties of the plate 1 before heating and forming the plate 1, oxides are generated during heating and forming of the plate 1. Can be reduced. That is, when the plate 1 is made of a metal that is easily oxidized (for example, titanium metal), an antioxidant layer is preferably formed on the surface of the plate 1. On the contrary, when the plate 1 is made of a metal that is difficult to oxidize (for example, steel), there is no need to form an antioxidant layer on the surface of the plate 1. In this embodiment, the antioxidant layer can be formed by selectively spraying an antioxidant on each plate 1 and drying the antioxidant.

  Similarly, when the plate 1 is made of a metal that is easily oxidized, a further layer of antioxidant is preferably applied to the surface of the plate 1 obtained in the rough molding step S21 before the subsequent thin molding step S22. By covering first, it forms so that it may have an antioxidant effect also in the place where the board | plate material 1 deform | transforms. On the other hand, when the plate 1 is made of a metal that is difficult to oxidize, there is no need to form a single antioxidant layer on the surface of the plate 1 obtained in the rough molding step S21.

  When the plate material 1 obtained in the rough molding step S21 flows through the production line, the temperature of the plate material 1 is lowered, and the plate material 1 is severely cooled to room temperature. In principle, the molds having a relatively precise curved surface must be heated, and the heating temperature does not exceed the melting temperature of the crystals of the plate 1 in principle. Then, the unequal thickness structure corresponding to the required form is formed on the first surface 11 of the plate 1 by placing the plate 1 in the mold and press-molding the plate 1 with the mold. Can do.

  FIG. 3 c is an explanatory diagram of a cross-sectional structure of a plate material obtained through the milling step according to the first embodiment of the present invention. Referring to FIGS. 1, 3b, and 3c, in the milling step S3 of the present invention, the second surface 12 of the plate 1 obtained in the molding step S2 is milled by a single machine tool (in a virtual line in FIG. 3b). A single face 14 is formed by milling and reshaping. In this embodiment, after the plate material 1 obtained in the thin molding step S22 is lowered to a suitable temperature (for example, room temperature), the milling machine is selectively controlled using computer data, and further combined with a suitable cutting tool. Thus, the face 14 can be formed by flatly milling the second surface 12 of the plate 1.

  Table 3 is a list of data related to the formation of the unequal thickness structure face plate by the manufacturing method of the present invention. As can be seen from Table 3, after passing through the milling step S3, the weight of the plate 1 is about 30% to 65% of the weight of the plate 1 obtained in the material preparation step S1. It can be seen that the material acquisition rate in the manufacturing method of the present invention is clearly improved as compared with 25% to 55% shown in FIG.

  FIG. 3d is an explanatory diagram of a cross-sectional structure of a plate material obtained through a step of bending and milling according to the first embodiment of the present invention. Referring to FIGS. 1 and 3d, after the plate material 1 has undergone the processing of the milling step S3, one post-processing step S4 can be subsequently performed. A finished product of the face plate of the golf club head can be obtained.

  For example, if it is necessary to form the face plate 14 of the plate 1 in an arc shape, the plate 1 obtained in the milling step S3 and a mold having a set of curvatures are heated, and then the plate 1 is placed in a mold, and the plate 1 is bent using this mold. The radius of curvature that appears as the face 14 is preferably between 160 and 600 millimeters, and the center of curvature is located on the first surface 11 side, which can be useful for coupling to the body of the golf club head.

  Among them, a part of the surface of the plate material 1 on the second surface 12 is cut and removed in the milling step S3, and the antioxidant layer at the part is also removed, so that it is made of a metal that is easily oxidized. Before the plate material 1 is bent, the antioxidant is sprayed on the surface of the plate material 1 and all the portions of the surface of the plate material 1 are coated with one layer of antioxidant. It is preferable to form so as to have the above effect.

  In addition, after the milling step S3 (if the face 14 of the plate 1 needs to be formed into an arc shape, after the plate 1 is bent), selectively, silica sand, aluminum oxide, iron sand, With the granules such as aluminum particles or iron particles, the surface of the plate 1 can be sandblasted to remove oxides and / or impurities generated on the surface of the plate 1. In addition, the identification of the product can be enhanced by engraving a design such as a model number, letters, or a trademark on the surface (for example, the face 14) of the plate 1 by a method such as laser engraving as necessary.

  6A is an explanatory diagram of a cross-sectional structure of a plate material obtained through the material preparation stage according to the second embodiment of the present invention, and FIG. 6B is a cross-section of the plate material obtained through the molding stage according to the second embodiment of the present invention. FIG. 6 c is an explanatory diagram of a cross-sectional structure of a plate material obtained through the milling step according to the second embodiment of the present invention. Referring to FIGS. 1, 6a, 6b, and 6c, the golf club head face plate manufacturing method according to the second embodiment of the present invention is basically the same as the first embodiment described above. In the second embodiment of the invention, the step of selectively bending the plate material 1 in the above-described first embodiment is incorporated into the forming step S2, and the plate material 1 is bent at the same time when the unequal thickness structure 13 is formed. The effect of simplifying the manufacturing process can be achieved.

  More specifically, as shown in FIGS. 1 and 6a, in the present embodiment as well, in the material preparation stage S1, one plate material 1 is prepared and prepared for the subsequent processing. Subsequently, as shown in FIGS. 1 and 6b, in the forming step S2 of the present embodiment, the plate material 1 is folded by press-forming the plate material 1 obtained in the material preparation step S1, and the material is changed to the first material. By concentrating on one surface 11, the plate material 1 having a predetermined curvature can be obtained, and an unequal thickness structure 13 is formed on the first surface 11 of the plate material 1.

  Further, since the curvature at which the plate 1 is bent can be formed in the rough molding step S21, only the unequal thickness structure 13 can be molded in the thin molding step S22. That is, in the rough mold forming step S21, the plate material 1 and a pair of molds having a relatively simple curved surface are heated, and then the plate material 1 is placed in the mold. By performing press molding, a curved plate 1 can be obtained, and an initial unequal thickness structure 13 can be formed on the first surface 11 of the plate 1.

  Subsequently, in the thin mold forming step S22, the plate 1 is press-molded again with another set of molds having a relatively precise curved surface, thereby matching the first surface 11 of the plate 1 with a predetermined form. Unequal thickness structures can be formed. Alternatively, it is possible to initially form the curvature of the plate 1 and the shape of the unequal thickness structure 13 in the rough mold forming step S21, and then accurately forming the plate 1 again in the thin mold forming step S22. As a result, a bending curvature and unequal thickness structure 13 matching the predetermined form is formed on the plate 1.

  Referring to FIGS. 1, 6b, and 6c, in the milling step S3 of the present invention, the second surface 12 of the plate 1 obtained in the molding step S2 by one machine tool is milled (imaginary line in FIG. 6b). A single arcuate face 14 is formed by milling along and cutting. Subsequently, the finished product of the face plate of the golf club head can be obtained immediately by simply performing the post-processing step S4 including the steps of cleaning and engraving the design on the surface of the plate 1. As described above, according to the method for manufacturing the face plate of the golf club head of the present invention, the step of the manufacturing process can be simplified by bending the plate 1 at the same time when the unequal thickness structure 13 is formed. Therefore, it is possible to achieve the effect of further progressing and improving the production efficiency.

  In summary, according to the method for manufacturing a face plate of a golf club head of the present invention, an uneven thickness structure larger than the original plate thickness can be created by increasing the thickness of the local portion of the plate after press molding. Therefore, it is possible to effectively reduce the amount of material removed that must be milled after press forming the plate material, and to further increase the material acquisition rate at which the material is converted into a finished product. Therefore, by selectively using a relatively thin plate material in the material preparation stage, waste of raw materials can be reduced, which can help to lower the manufacturing cost.

  According to the method for manufacturing the face plate of the golf club head of the present invention, the amount of material removed that must be milled after press molding of the plate material can be reduced. The consumption speed of the cutting tool for milling can be kept low, thereby achieving the effect of extending the service life of the cutting tool for slicing.

  The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are exemplary and not intended to be limiting.

DESCRIPTION OF SYMBOLS 1 Plate body 11 1st surface 12 2nd surface 13 Unequal thickness structure 14 Face A Unequal thickness structure molding area B Peripheral area S1 Material preparation stage S2 Molding stage S21 Rough molding stage S22 Narrow molding stage S3 Milling Cutting stage S4 Post-processing stage T1 Wall thickness T2 Maximum wall thickness

Claims (9)

In a method for manufacturing a face plate of a golf club head, including a material preparation step (S1), a molding step (S2) and a milling step (S3),
In the material preparation stage (S1), a plate material (1) having a thickness of 2 to 7 mm is prepared, and the plate material (1) has one first surface (11) and one second surface (12) facing each other. The first surface (11) is divided into one unequal thickness structure forming area (A) and one peripheral area (B), and the peripheral area (B) is the unequal thickness structure forming area ( Distributed on the outer circumference of A),
In the molding step (S2), the plate material (1) obtained in the material preparation step (S1) is press-molded, and the material of the plate material (1) is concentrated on the first surface (11), thereby preventing the above-described problem. One unequal thickness structure (13) is formed in the equal thickness structure forming area (A), and one maximum thickness (T2) is formed between the first surface (11) and the second surface (12). And the maximum thickness (T2) is larger than the thickness (T1) of the plate (1) obtained in the material preparation stage (S1),
In the milling step (S3), one face (14) is formed by cutting the second surface (12) of the plate (1) obtained in the molding step (S2), and the milling step (S3) the weight of the plate (1) after undergoing the Ri 65% der 30% of the weight of the plate (1) obtained in step (S1) of the material preparation,
In the forming step (S2), the material of the plate material (1) is concentrated on the first surface (11), and at the same time, the plate material (1) is also shaped and curved, and in the milling step (S3). The second surface (12) of the plate (1) obtained in the forming step (S2) is cut and modified to form one arcuate face (14), and the plate (1) is a face. the radius of curvature appearing as (14) is 600 mm to 160 millimeters, and the curvature of the central manufacturing method of the face plate of the golf club head, wherein the form der Rukoto located the first surface (11) side .   The maximum thickness (T2) of the plate (1) after the molding step (S2) is 1.15 times the thickness (T1) of the plate (1) obtained in the material preparation step (S1). 2. The method of manufacturing a face plate of a golf club head according to claim 1, wherein the ratio is 1.3 times. The above material preparation step plate obtained in (S1) (1) is a plate material of stainless steel, with 2 mm maximum wall thickness of the plate material of the stainless, the maximum thickness of after a step (S2) of the molding 3. The method of manufacturing a face plate of a golf club head according to claim 1, wherein is 2.3 millimeters. The material resulting sheet in step (S1) of Preparation (1) is a plate of titanium alloy, the largest after undergoing maximum thickness of the plate material of the titanium alloy is 3 millimeters, of the molding stage (S2) 3. The method for manufacturing a face plate of a golf club head according to claim 1, wherein the thickness is 3.5 millimeters. Plate (1) obtained in the above material preparation step (S1) is a plate of titanium alloy, in the maximum wall thickness 3.5mm sheet of the titanium alloy, after passing through the molding stage (S2) 3. The method of manufacturing a face plate for a golf club head according to claim 1, wherein the maximum thickness of the golf club head is 4 millimeters. The material resulting sheet in step (S1) of Preparation (1) is a plate of titanium alloy, the largest after undergoing maximum thickness of the plate material of the titanium alloy is 4 millimeters, the molding step a (S2) 3. The method for manufacturing a face plate of a golf club head according to claim 1, wherein the thickness is 5 millimeters. The material resulting sheet in step (S1) of Preparation (1) is a plate of titanium alloy, the largest after undergoing maximum thickness of the plate material of the titanium alloy is 5 millimeters, of the molding stage (S2) 3. The method of manufacturing a face plate for a golf club head according to claim 1, wherein the wall thickness is 6.2 millimeters. The material resulting sheet in step (S1) of Preparation (1) is a plate of titanium alloy, the largest after undergoing maximum thickness of the plate material of the titanium alloy is 6 millimeters, of the molding stage (S2) 3. The method of manufacturing a face plate for a golf club head according to claim 1, wherein the thickness is 7.6 millimeters. Plate (1) obtained in the above material preparation step (S1) is a plate of titanium alloy, the largest after undergoing at the maximum thickness of 7 mm plate of said titanium alloy, in the molding stage (S2) 3. The method of manufacturing a face plate for a golf club head according to claim 1, wherein the wall thickness is 9.1 millimeters.

Images