TWI812545B - Method of manufacturing golf club head components - Google Patents

Abstract

A method for manufacturing a golf club head component includes a heating step, a shaping step, a dividing step, a post-processing step, and a combining step. In this heating step, a plurality of blanks made of high-strength aluminum alloy are heated up and subjected to solution treatment. In the forming step, a mold including a plurality of mold cavities is prepared. Each mold cavity has a plurality of forming areas. Each forming area has at least one relatively high temperature area and at least one relatively low temperature area. The blanks are respectively placed into the forming areas. In the mold cavities, the blanks are formed into a plurality of sheet parts corresponding to the mold cavities and having at least two local strengths. In this dividing step, each sheet piece is divided into multiple workpieces. In this post-processing step, each workpiece is formed into a golf club head component. These sheet parts have two different strengths and have both strength and toughness.

Description

Method of manufacturing golf club head components

The present invention relates to a manufacturing method, in particular to a manufacturing method of golf club head components.

At present, the common hollow golf club heads are mostly assembled by welding or other combination methods such as the top plate, sole plate, and impact panel. These parts are usually made of metal or composite materials through forging according to different needs. Although this multi-piece forging method can produce different plate-shaped components, it is limited by the forging characteristics and cannot produce components with more complex shapes, nor can it be forged with materials with higher strength; in addition, , there is still room for improvement in the output of one piece at a time in the general forging process. Although there are golf club heads currently on the market made of high-strength aluminum alloys, most of them are made through cold forming. Since it is difficult to achieve both strength and toughness, there is a problem of insufficient functionality.

Therefore, the object of the present invention is to provide a method that can overcome the above problems. Methods of manufacturing golf club head components.

Therefore, the manufacturing method of the golf club head component of the present invention includes a heating step, a forming step, a dividing step, a post-processing step, and a bonding step. In this heating step, a plurality of blanks made of high-strength aluminum alloy are placed in a heating furnace and the temperature is raised to 200 degrees Celsius to 560 degrees Celsius. In the forming step, a mold including a plurality of mold cavities is prepared. Each mold cavity of the mold has a plurality of interconnected forming areas. Each forming area has at least one relatively high temperature area and at least one relatively low temperature area. The blanks are transferred from the heating furnace to the mold and placed into the mold cavities respectively, so that the blanks are formed into a plurality of sheet parts corresponding to the mold cavities and having at least two local strengths. , and then through the mold holding pressure to perform in-mold quenching on the sheet parts. In the dividing step, each sheet piece is divided into a plurality of workpieces corresponding to the shapes of the forming regions, and the workpieces are trimmed so that each workpiece has at least one fitting structure. In this post-processing step, after the mold is opened, the workpieces are removed from the mold and subjected to artificial aging treatment. In the combining step, an additional sheet body is prepared, and then the at least one fitting structure of each workpiece is fitted to the secondary sheet body, and the workpieces are further joined by welding, riveting, locking or gluing. The fitting part of the auxiliary sheet body is used to obtain a golf club head component.

The effect of the present invention is that in addition to forming sheet parts with complex shapes from high-strength aluminum alloys through this manufacturing method, the same sheet piece can also have at least two different local strengths through local heating, and These two local strengths can be set according to Adjustments are made according to the design requirements so that the sheet parts have both strength and toughness and can be designed to match the functionality of the ball head. In terms of strength, taking 7075/6061 aluminum alloy as an example, the sheet parts produced by the present invention can be compared with ordinary F materials. The strength of aluminum materials is increased by about 1.5 to 1.7 times, and hot forming solves the problems of conventional high-strength aluminum alloys that are prone to cracking and deformation during cold forming. In addition, this manufacturing method can produce multiple golf club head parts at one time, greatly improving production capacity and production efficiency.

11:Heating step

12: Forming steps

13: Segmentation steps

14: Post-processing steps

15: Combining steps

2: Mold

21:Mold cavity

211: Forming area

3: Sheet parts

31:Soft zone

32:Hard area

4: Workpiece

41: Chimeric block

5: Sub-body

51: Fitting slot

6: Golf club head parts

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a flow chart illustrating an embodiment of the golf club head component of the present invention; Figure 2 is a schematic diagram, It shows that each mold cavity of the mold has multiple parts combined into one cavity; Figure 3 is a schematic diagram showing that there are four mold cavities and a total of twenty-four forming areas. This schematic diagram omits these mold cavities. The specific outline; Figure 4 is a schematic diagram illustrating two relatively high temperature areas and a relatively low temperature area of the mold cavity; Figure 5 is a schematic diagram illustrating one of the dividing steps in this embodiment; Figure 6 is a perspective view illustrating the implementation One of the workpieces produced by one of the post-processing steps in the example; and Figure 7 is a perspective view illustrating a Gower produced by one of the combining steps in the example. golf club head parts.

Referring to FIG. 1 , one embodiment of the manufacturing method of golf club head components of the present invention includes a heating step 11 , a forming step 12 , a dividing step 13 , a post-processing step 14 , and a combining step 15 . In the heating step 11, a plurality of blanks made of high-strength aluminum alloy are placed into a heating furnace respectively, and the temperature is raised to 200 degrees Celsius to 560 degrees Celsius.

Referring to Figures 1 to 4, in the forming step 12, a mold 2 including four mold cavities 21 is prepared. Each mold cavity 21 has six forming areas 211 that are connected to each other and arranged in a row. Each forming area The shape of 211 is the desired shape. The forming area 211 has two relatively high-temperature areas and a relatively low-temperature area located between the relatively high-temperature areas. (Each forming area 211 can also be at the same temperature.) After the blanks are removed from the heating furnace, they are transported to the mold 2 and placed in the mold cavities 21 respectively, and then the mold 2 is closed. The blanks are formed into a plurality of sheet parts 3 respectively corresponding to the mold cavities 21. Each sheet piece 3 will form a soft zone 31 with better toughness corresponding to the relatively high temperature area, and will form a soft zone 31 corresponding to the relatively low temperature area. A hard area 32 with higher strength is formed, so that the sheet piece 3 has two different local strengths. Then, the sheet metal parts 3 undergo a holding time in the mold 2 for in-mold quenching. The holding time varies depending on the strength of the soft and hard areas. Specifically, different time and temperature curves are used to control the interior of the material. The metallographic structure is used to control the tensile strength of the material, so that the strength of the sheet parts 3 can be adjusted and controlled. Take it out after opening the mold The sheet metal parts 3 are allowed to cool naturally to normal temperature. The sheet metal parts 3 produced through the aforementioned hot forming process can improve the extensibility and formability of the material, deepen the drawing depth and reduce the springback caused by the internal stress of the material, which can overcome the problems of conventional cold stamping. The resulting problems such as springback, wrinkles, and cracks. The local heating method used in this embodiment can produce two different local strengths on the same sheet piece 3, and the local strength can be adjusted according to design requirements, so that the sheet piece 3 can have both strength and toughness. In order to improve the yield rate and adjust it according to the required functionality of the ball head, it can adjust the hitting characteristics or feel of the ball head.

Referring to Figures 1, 3, 5, and 6, in the dividing step 13, each sheet piece 3 is divided into six workpieces 4 corresponding to the shapes of the forming areas 211 by laser cutting. The method can be full-circumcision cutting or partial cutting-free according to the process requirements. Due to the high strength of high-strength aluminum alloy, cutting with ordinary tools will cause greater wear and tear on the tools, so it is better to use laser cutting; then The workpieces 4 are trimmed, so that each workpiece 4 has a plurality of fitting structures. The workpiece 4 can be the bottom plate or the top plate of the golf club head, and the fitting structure can be the fitting block 41 (see Figure 7) or fitting groove. In the post-processing step 14, after the mold is opened, the workpieces 4 are removed from the mold 2 and subjected to artificial aging treatment. Taking 7075 aluminum alloy as an example, the workpieces 4 can be continuously aged at 120 degrees Celsius for 6 to 24 hours. Artificial aging treatment, aging time and temperature will vary depending on the mechanical strength required. Referring to Figures 1 and 7, in the combining step 15, an auxiliary sheet body 5 having a fitting structure matching the workpiece 4 is additionally prepared. 5 can be made by the same method and material as the workpiece 4, or can be made by general cold forming, or made of composite materials. The fitting structures of the workpiece 4 and the auxiliary sheet body 5 are fitted into each other in pairs, and the fitting parts of the workpiece 4 and the auxiliary sheet body 5 are joined by welding, riveting, locking or gluing, thereby A golf club head component 6 is produced. Taking FIG. 7 as an example, the fitting block 41 on the workpiece 4 is fitted into a fitting groove 51 on the auxiliary sheet body 5. Of course, the arrangement can also be reversed, or other fitting designs can be adopted. When the joining method is welding, spot welding, interval arc welding or full circumferential arc welding can be used. This embodiment improves the accuracy of welding and ball head by fitting parts into each other, and can reduce the cost of the process and the development of the jig. In addition, the workpiece 4 has the soft areas 31 and the hard areas 32 with different local strengths according to design requirements, so that the golf club head component 6 can produce corresponding functionality.

To sum up, unlike the general processing of high-strength aluminum alloys by cold stamping, the present invention can make plate-shaped parts with relatively complex shapes from high-strength aluminum alloys that are difficult to process, so that the golf club head part 6 has High-strength aluminum alloys are lightweight and high-strength (tensile strength can reach 543MPa). Taking 7075/6061 aluminum alloy as an example, the strength can be increased by about 1.5 to 1.7 times compared with ordinary F-material aluminum materials. In addition, through this The embodiment can produce twenty-four or other numbers of golf club head components 6 at one time, greatly improving the output and efficiency, so the purpose of the present invention can indeed be achieved.

However, the above are only examples of the present invention and should not be used to limit the scope of the present invention. Any application for patent scope and patent specification based on the present invention Simple equivalent changes and modifications to the content are still within the scope of the patent of the present invention.

11:Heating step

12: Forming steps

13: Segmentation steps

14: Post-processing steps

15: Combining steps

Claims (5)

A method of manufacturing a golf club head component, including: In a heating step, a plurality of blanks made of high-strength aluminum alloy are placed in a heating furnace and heated to 200 degrees Celsius to 560 degrees Celsius; A forming step, preparing a mold including a plurality of mold cavities. Each mold cavity of the mold has a plurality of interconnected forming areas. Each forming area has at least one relatively high temperature area and at least one relatively low temperature area. These are After the blanks are removed from the heating furnace, they are transferred to the mold and placed into the mold cavities respectively, so that the blanks are formed into a plurality of sheet parts corresponding to the mold cavities and having at least two local strengths, and then In-mold quenching is performed on the sheet parts by maintaining pressure in the mold; A dividing step is to divide each sheet piece into a plurality of workpieces corresponding to the shapes of the forming areas, and trim the edges of the workpieces so that each workpiece has at least one fitting structure; A post-processing step, after the mold is opened, the workpieces are removed from the mold and subjected to manual aging treatment; and In a combining step, an additional sheet body is prepared, and then the at least one fitting structure of each workpiece is fitted to the secondary sheet body, and the workpiece and the secondary sheet body are further joined by welding, riveting, locking or gluing. The fitting parts of the sheet bodies are used to obtain a golf club head component. The manufacturing method of golf club head parts as described in claim 1, wherein in the forming step, the sheet parts undergo a holding time in the mold for in-mold quenching, and after the mold is opened, the sheet parts are taken out and Cool to room temperature naturally. The method of manufacturing a golf club head component according to claim 1, wherein in the heating step, the mold includes four mold cavities, each mold cavity having six forming areas. The method of manufacturing a golf club head component according to claim 1, wherein the workpieces are one of the top plate or the bottom plate of the golf club head. The manufacturing method of golf club head parts according to claim 1, wherein in the forming step, the sheet parts are subjected to artificial aging treatment at 120 degrees Celsius for 6 to 24 hours.

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