TW201819093A - Integrally-forged composite-material golf iron head having a counterweight featuring small density, being easy to adjust weight ratio of a club head, and resistance to high temperature and high pressure - Google Patents

Abstract

The invention relates to an integrally-forged composite-material golf iron head, wherein a counterweight is integrally embedded inside an iron body. The counterweight is made of a non-metallic ceramic material. The present invention allows for integral formation of a composite material of the counterweight made of ceramic material and the iron body made of a metal. The counterweight has properties of small density, being easy to adjust a weight ratio of a club head, and resistance to high temperature and high pressure, so that the physical property of the golf iron head can be further improved.

Description

One-piece forged composite golf iron head

The invention relates to a method for manufacturing a golf ball, in particular to an integrally forged composite golf iron head.

Golf has a long history, and it also has different developments in various countries. Based on the improvement of modern production technology and the improvement of consumption standards, golf has become increasingly fashionable. In golf, the player's technology and the quality of golf equipment are almost the same. It is the key factor for the victory or defeat of the game. As the players are already quite skilled, they can only turn to the improvement of the quality of the equipment. For the production requirements of the equipment, they are gradually moving towards the demand for lightweight materials and large size.

In the existing golf iron heads, in order to increase the hitting function of the iron head in order to reduce weight or volume, a weight block is provided in the iron head to appropriately adjust the overall weight ratio of the iron head so that the iron The physical properties of the head are effectively improved, and common iron heads usually have the following types:

1. Integral forging or casting iron head: This type of iron rod system can be integrally forged or cast with steel. Steel can be roughly divided into stainless steel and carbon steel. The density of stainless steel is about 7.6 g / cc ～ 7.8 g / cc, the density of carbon steel is 7.7 g / cc ～ 7.9 g / cc, the density of the overall material is too heavy to reduce the weight ratio of the ball head, and the density of the titanium alloy iron head formed by integral forging is 4.5 g / cc, which can achieve a large volume Design purpose, but due to the high material and manufacturing cost of the titanium alloy, the cost and selling price of the finished iron head are too high to be accepted by the market.

2. Aluminum alloy composite forged iron head: This type of iron head is formed by the iron body of iron and steel combined with aluminum alloy as the internal weight block and formed through the forging and compounding process. Among them, the aluminum alloy material used for the weight block The density is about 2.5 g / cc. Although the use of aluminum alloy materials can achieve the ideal density ratio, the aluminum alloy has a pier point of about 650 to 680 ° C, and the temperature during forging is usually 700 to 1200 ° C. As a result, the aluminum alloy is melted during the forging process, resulting in problems such as air bubbles and shrinkage holes, damage to the metal structure, looseness and compactness of the structure, and impact on the impact effect.

3. Titanium alloy composite forged iron head: This type of iron head is formed by the iron body of iron and steel combined with titanium alloy as the internal weight block and formed through the forging composite process. Among them, the titanium alloy used for the weight block The density of the material is about 4.5 g / cc. Although the various physical properties are excellent, the cost of the material is high and the manufacturing difficulty is high. As a result, the ball head is too expensive to be accepted by the market, and the density of titanium alloy is used. It is 4.5 g / cc. Compared with the bulk steel material's density of 7.7 g / cc, the effect of adjusting the weight ratio is not obvious.

The existing iron heads use the aforementioned materials or composite materials in the production technology, but due to the defects or deficiencies in the application of various materials, the applicant considers that the existing golf is based on a comprehensive consideration of the selection of various materials. In terms of material selection or manufacturing process, iron heads are not easy to meet consumer needs, and there is still a need for improvement.

In order to solve the existing defects in the application of the weight materials, and it is difficult to meet the needs of consumers, the main purpose of the present invention is to provide a monolithic forged composite golf iron head, which is made of non-metallic ceramic materials for the weight With the combination of integrated forging and composite forming, the weight block is integrated with the iron body. In addition to the purpose of adjusting the overall weight, the production process can also save costs and improve yield.

The technical means used in the present invention is to provide an integrally formed forged composite golf iron head, comprising: an iron body, which forms an embedded groove in the interior; a counterweight, which is arranged in the embedded groove of the iron body The material of the weight block is a ceramic material with a density of 1.3 ~ 3.5g / cc; a cover is welded with the iron body and the weight block is sealed in the groove of the iron body Inside.

The one-piece forged composite golf iron head, wherein the composition of the weight block is 60-70% silica, 15-25% zirconia, and 10-20% alumina.

In the one-body molded forged composite golf iron head, the caulking groove is provided on a striking surface of the iron body, and the surface of the cover is flush with the striking surface of the iron body.

The one-piece forged composite material golf iron head, wherein the insert groove is provided at a bottom of the iron body, and a surface of the cover is flush with a bottom surface of the iron body.

The present invention utilizes the provided integrally-formed forged composite golf iron head, and the efficiency enhancements that can be obtained include: 1. The weight block of the present invention is made of a specific proportion of ceramic material, and the overall density is light and the density and the ball head can be easily adjusted. Size to achieve ball head weight optimization design. 2. The weight block of the present invention is easy to form. The weight block formed through high temperature sintering can be made in a special shape to match the position of the center of gravity of the iron body. After the weight block and the iron body are combined in a forging process, It is more comfortable and there is no gap at all. 3. The counterweight of the present invention is resistant to high temperatures and has a low coefficient of expansion. Therefore, when the cover is combined with the iron body by welding, the counterweight will not generate porosity, shrinkage or impurities due to high heat, and its size is stable and difficult to suffer The effect of temperature changes, in addition, through the process of welding and composite forging, the weight block is formed in a state of being tightly enclosed by the iron body, and the material characteristics of the weight block make the weight block and the iron body in the subsequent heat treatment process. There is no gap or peeling between them.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the contents of the description, the preferred embodiment shown in the figure is further described in detail as follows:

The present invention is a one-piece forged composite golf iron head. Please refer to the preferred embodiment of FIG. 1, which includes the following steps in sequence, providing processing material S1, processing material assembly S2, cap welding S3, and bead grinding. S4 and forging S5.

Provide processing material S1: as shown in FIG. 2 and FIG. 3, an iron body 10, a weight block 20, and a cover 30 are provided. Among them, the iron body 10 is provided with an embedded groove 12 on a striking surface 11. The recessed groove 12 is stepped. A placing edge 13 is formed around the recessed groove 12 to provide the cover 30 to be placed thereon. The iron body 10 can be made of common carbon iron, stainless steel or alloy steel, such as Carbon steel can be selected from 1020C, 1025C, 1035C, 1045C, 35CrMo, or stainless steel. Depending on the composition of the alloy, SUS303, SUS304, SUS431, 17-4PH and other materials can be used, which is not limited here.

The external shape and volume of the weight block 20 are similar to the shape and volume of the recessed groove 12, and the material of the weight block 20 is ceramic material. Preferably, the density of the weight block 20 is preferably 1.3 ~ 3.5g / cc, with a composition of 60-70% silicon oxide, 15-25% zirconia, and 10-20% alumina or other chemical components. The balance can be adjusted by adjusting the proportion of various components. Effect of block density. Therefore, the weight block 20 can withstand high temperatures from 1400 ° C to 2200 ° C.

The outer shape of the cover 30 is similar to the placing edge 13 of the iron body 10. The material of the cover 30 is the same as that of the iron body 10.

Processing material assembly S2: The counterweight block 20 is correspondingly inserted into the recessed groove 12 of the iron body 10, so that the counterweight block 20 completely fills the recessed groove 12, and the cover 30 is placed on the counterweight block. 20 and above the placing edge 13, the surface of the cover 30 and the striking surface of the iron body 10 form a flat state.

Cover welding S3: As shown in FIG. 4, the gap between the cover 30 and the body of the iron body 10 is sealed by welding, so that the weight block 20 cannot be pulled out of the iron body 10 to form a Forged rough embryo F.

Bead grinding S4: Continuing the previous steps, smooth the forged bead F adjacent to the bead around the cover 30, make the cover 30 flush with the striking surface of the iron body 10, and grind the forged rough F To a predetermined weight.

Forging and forming S5: The forged rough blank F combined with the composite material completed in the previous step is preheated to 700 ° C to 1200 ° C, and then placed in a forging die (not shown) for forging, as shown in Figure 5. It is shown that one of the forged semi-finished products P after forming will form a burr of 0.5 g to 5.0 g around the iron body 10.

As shown in FIG. 6, the forged semi-finished product P obtained through the foregoing process is attached to the iron body 10 and the cover 30 with the weight block 20 inside, so that the weight block 20 and the iron body can be made. 10 is tightly coupled, and there is no gap at all between the weight block 20 and the iron body 10, and the high temperature resistance and low expansion coefficient material characteristics of the weight block 20 make the weight The weight 20 will not be deformed, shrinkaged or pinholed due to high temperature, and when the subsequent heat treatment process is performed, the weight 20 and the iron body will not be caused by the difference in material density and thermal expansion coefficient of the material. 10 peels or produces gaps, and thanks to the low density of the weight block 20, the forged semi-finished product P has a lighter weight in the same unit volume than the original single-material iron head, and at the same unit weight It has a larger volume and more room to play in the design of the ball head.

After the forged semi-finished product P is processed, a low density can be formed in the center of the forged semi-finished product P, and a high-density weight ratio configuration can be formed around the forged semi-finished product P, which can increase the fault tolerance rate of the ball head during the blow and increase the sweet area. The striking effect and striking sound are excellent when striking.

The second preferred embodiment of this case is shown in FIGS. 7 and 8. The manufacturing process is substantially the same as that of the first preferred embodiment of this case. The difference is that the iron body 10A forms the recess 12A at a bottom 14 (SOLE), so that The weight block 20A can be inserted into the embedded groove 12A on the bottom 14, and then the cover 30A is used to seal the embedded groove 12A, so that the cover 30A is flush with the surface of the bottom 14 for subsequent subsequent welding. , Welding bead grinding and forging, etc. The positions of the inset grooves 12 and 12A in this case are not limited to the striking surface or bottom (SOLE), but can also be located on the back of the iron body 10, 10A (BACK). effect.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any person with ordinary knowledge in the technical field may use the present invention without departing from the scope of the technical features provided by the present invention. Equivalent embodiments of partial changes or modifications made to the technical content disclosed by the invention still fall within the scope of the technical features of the present invention.

S1‧‧‧ provides processing materials

S2‧‧‧Processing material assembly

S3‧‧‧Cap welding

S4‧‧‧Bead grinding

S5‧‧‧ Forged

10, 10A‧‧‧ Iron body

11‧‧‧ strike surface

12, 12A‧‧‧ Recess

13‧‧‧ Placed margin

14‧‧‧ bottom

20, 20A‧‧‧ Counterweight

30, 30A‧‧‧Cap

F‧‧‧forged rough embryo

P‧‧‧Forged semi-finished product

FIG. 1 is a flowchart of a first preferred embodiment of the present invention. FIG. 2 is an exploded view of the first preferred embodiment of the present invention during the assembly steps of processing materials. FIG. 3 is a schematic view showing a state where an assembly cover and a weight are assembled on the iron body in the first material assembly step of the present invention. FIG. 4 is a schematic view showing a state of the iron body and the cover after welding in the step of sealing and welding of the first preferred embodiment of the present invention. FIG. 5 is a schematic diagram of the appearance of a forged semi-finished product after forging according to the first preferred embodiment of the present invention. 6 is a schematic sectional view of a forged semi-finished product after forging according to the first preferred embodiment of the present invention. FIG. 7 is an exploded view of a second preferred embodiment of the present invention in the assembly steps of processing materials. FIG. 8 is a schematic view showing a state of the iron body and the cover after the welding in the bead grinding step of the second preferred embodiment of the present invention.

Claims (4)

An integrally-formed forged composite golf iron head includes: an iron body that forms an embedded groove in the interior; a weight block disposed in the embedded groove of the iron body, and the material of the weight block is density Ceramic material at 1.3 ~ 3.5 g / cc; a cover which is welded with the iron body and seals the weight in the groove of the iron body. The one-piece forged composite golf iron head according to claim 1, wherein the weight block has a composition of 60-70% silica, 15-25% zirconia, and 10-20% alumina. The one-piece forged composite golf iron head according to claim 1 or 2, wherein the caulking groove is provided on a striking surface of the iron body, and the surface of the cover is flush with the striking surface of the iron body. The one-piece forged composite golf iron head according to claim 1 or 2, wherein the caulking groove is provided at a bottom of the iron body, and a surface of the cover is flush with a bottom surface of the iron body.