TWI611861B - One-piece forged composite golf iron head - Google Patents

Description

One-piece forged composite golf iron head

The present invention relates to a method of manufacturing a golf club, and more particularly to an integrally formed forged composite golf iron head.

The history of golf has a long history and has different appearances in various countries. Based on the improvement of modern production technology and the improvement of consumption standards, golf is also becoming more and more fashionable. In golf, the skills of players and the quality of golf equipment are almost It is the key factor in the victory or defeat of the game. Because the players' skills are quite sophisticated, they can only turn to the improvement of the quality of the ball. For the production requirements of the ball, the demand for lightweight materials and large size is gradually becoming more and more.

In addition, the iron head of the existing golf ball is generally used for weight reduction or volume enlargement to increase the hitting function of the iron head, and a weight is provided in the iron head to appropriately adjust the overall weight ratio of the iron head to make the iron rod The physical properties of the head are effectively improved, and the common iron heads are usually of the following types:

1. One-piece forged or cast iron head: This type of iron can be integrally forged or cast by steel. The steel can be roughly divided into stainless steel and carbon steel. The density of stainless steel is about 7.6g/cc~7.8g/ Cc, carbon steel density of 7.7g / cc ~ 7.9g / cc, the overall material density is too heavy, can not reduce the weight ratio of the ball head, and the integral forging shape of the titanium alloy iron head density of 4.5g / cc, can reach a large volume The design purpose, but due to the high cost of the titanium alloy itself and the manufacturing cost, the cost and price of the finished iron head is too high to be accepted by the market.

2. Aluminum alloy composite forged iron head: This type is made of iron and steel material iron body combined with aluminum alloy as internal weight, through the forging composite process forming iron head, wherein the aluminum alloy material used in the weight block The density is about 2.5g/cc, and it can be used with aluminum alloy materials. To the ideal density ratio, but because the aluminum alloy has a defect point of about 650 ~ 680 ° C, and the forging temperature is usually 700 ~ 1200 ° C, causing the aluminum alloy to be melted during the forging process, resulting in bubbles and shrinkage cavities, The metal structure is destroyed, the structure is loose and not tight, and the impact effect is affected.

3. Titanium alloy composite forged iron head: This type is made of iron and steel material iron body combined with titanium alloy as internal weight, through the forging composite process forming iron head, wherein the titanium alloy used in the weight The density of the material is about 4.5g/cc. Although the physical properties are excellent, the material cost is high and the manufacturing difficulty is high, which leads to the high cost of the ball making head, is not easily accepted by the market, and the density of the titanium alloy is used. At 4.5 g/cc, the effect of adjusting the weight ratio is not significant compared to the density of the bulk steel material of 7.7 g/cc.

In the production technology, the existing iron head adopts the above-mentioned various materials or composite materials, but since various materials have defects or deficiencies in application, the applicant considers the existing golf based on comprehensive considerations of various materials. The iron head is not easy to meet the needs of consumers in the material selection or process, and there is still a need for improvement.

In order to solve the defects in the application of the existing weight materials, it is difficult to meet the needs of consumers, and the main object of the present invention is to provide an integrally formed forged composite golf iron head which is made of a non-metallic ceramic material for the weight. With the integrated one-piece forging composite forming, the weight and the iron body are integrated, and 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 a slot in the interior; and a weighting block disposed in the slot of the iron body; The weight of the weight is a ceramic material having a density of 1.3 to 3.5 g/cc; a cover that is welded to the iron body and seals the weight in the recess of the iron body such that the weight is wrapped around the iron body and the inside of the cover Combined, and no gap is formed between the weight and the iron body.

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

The one-piece forged composite golf iron head, wherein the groove is disposed on a striking surface of the iron body, and a surface of the cover is flush with a striking surface of the iron body.

The one-piece forged composite golf iron head, wherein the groove is disposed 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 to achieve enhanced power efficiency including:

1. The weight of the present invention is made of a ceramic material of a specific ratio, and the overall density is light and the density and the volume of the ball are easily adjusted to achieve an optimal ball weight.

2. The weight of the weight of the invention is easy to form, and the weight formed by high-temperature sintering can be made in a special shape to match the center of gravity of the iron body, and the weight and the iron body are combined in a forging process. More compliant and there is no gap at all.

3. The weight of the invention can withstand high temperature and has low expansion coefficient. Therefore, when the cover is combined with the iron body by welding, the weight does not generate pores, shrinkage holes or impurities due to high heat, and the size is stable and not easy to be affected. In addition, through the welding and composite forging process, the weight forming block is tightly wrapped by the iron body, and the weight of the weight is used to make the weight and the iron body in the subsequent heat treatment process. There is no gap or peeling between them.

S1‧‧‧ provides processing materials

S2‧‧‧Processing material assembly

S3‧‧‧ cover welding

S4‧‧‧Bead grinding

S5‧‧‧Forging

10, 10A‧‧‧ hardcore body

11‧‧‧Beat surface

12, 12A‧‧‧ slotted

13‧‧‧Place

14‧‧‧ bottom

20, 20A‧‧‧ weights

30, 30A‧‧ ‧ cover

F‧‧‧Forged rough embryo

P‧‧‧Forged semi-finished products

1 is a flow chart of a first preferred embodiment of the present invention.

Figure 2 is an exploded perspective view showing the assembly process of the processed material in the first preferred embodiment of the present invention.

Fig. 3 is a schematic view showing the assembled cover of the processing material assembly step and the weight of the iron body in the first preferred embodiment of the present invention.

Figure 4 is a schematic view showing the state of the iron body and the cover after welding in the cap welding step in the first preferred embodiment of the present invention.

Figure 5 is a schematic view showing the appearance of a forged semi-finished product after forging in a first preferred embodiment of the present invention.

Figure 6 is a schematic cross-sectional view showing a forged semi-finished product after forging in a first preferred embodiment of the present invention.

Figure 7 is an exploded perspective view showing the assembly process of the processed material in the second preferred embodiment of the present invention.

Figure 8 is a schematic view showing the state of the iron body and the cover after welding in the bead grinding step of the second preferred embodiment of the present invention.

In order to be able to understand the technical features and practical functions of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further illustrated in the preferred embodiment as illustrated in the following:

The present invention is an integrally formed forged composite golf iron head. Referring to the preferred embodiment of FIG. 1, the method includes the following steps, including processing material S1, processing material assembly S2, cap welding S3, bead grinding S4 and forging form S5.

The processing material S1 is provided as shown in FIG. 2 and FIG. 3, and an iron body 10, a weight 20 and a cover 30 are provided. The iron body 10 is provided with a slot 12 in a striking surface 11 . The slot 12 is stepped, and a receiving edge 13 is formed around the slot 12 to provide the cover 30. The iron body 10 can be made of carbon iron, stainless steel or alloy steel. Carbon steel can be selected from 1020C, 1025C, 1035C, 1045C, 35CrMo, etc., or stainless steel, depending on The alloy composition may be selected from materials such as SUS303, SUS304, SUS431, and 17-4PH, and is not limited herein.

The shape and volume of the weight 20 are similar to the shape and volume of the slot 12. The weight of the weight 20 is ceramic. Preferably, the weight of the weight 20 is preferably 1.3~. 3.5g / cc, composition of 60-70% yttrium oxide, 15-25% zirconia and 10-20% of alumina or other chemical composition, through the adjustment of the proportion of various components, can adjust the weight The effect of the block density. Therefore, the weight 20 can withstand high temperatures from 1400 ° C to 2200 ° C.

The outer shape of the cover 30 is similar to the placement edge 13 of the iron body 10, and the material is the same material as the iron body 10.

The processing material assembly S2: the weight 20 is correspondingly placed into the slot 12 of the iron body 10, so that the weight 20 completely fills the slot 12, and the cover 30 is placed on the weight 20 and above the placement edge 13, the surface of the cover 30 is placed in a flat state with the striking surface of the iron body 10.

Cover welding S3: as shown in FIG. 4, the gap between the cover 30 and the main body of the iron body 10 is sealed by welding means, so that the weight 20 can not be removed from the iron body 10, thereby forming a Forging coarse embryo F.

The bead grinding S4: the pre-continuation step smoothes the forged rough blank F adjacent to the bead around the cover 30, so that the cover 30 is flush with the striking surface of the iron body 10, and the forged rough embryo F is ground. To the predetermined weight.

Forging shape S5: The forged rough embryo F combined with the composite material prepared 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 Fig. 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 covered with the weight 20 in the interior of the iron body 10 and the cover 30, so that the weight 20 and the iron can be The body 10 is tightly coupled, and no gap is formed between the weight 20 and the iron body 10, and the material property of the high temperature and low expansion coefficient of the weight 20 makes the welding process The weight 20 does not deform, shrink, or pinhole due to high temperature, and the weight portion 20 and the iron rod are not caused by the material density and the thermal expansion coefficient of the material during the subsequent heat treatment process. The body 10 is peeled off or creates a gap, and the low density of the weight 20 is utilized, so that the forged semi-finished P has a lighter weight at the same unit volume than the original single-piece iron head, and the same unit weight. At that time, it has a larger volume and has more room for play on the ball head design.

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 is formed around the ball, thereby increasing the fault tolerance of the ball head during the impact and increasing the sweet spot. Both the hitting and percussion sounds have a great effect when hitting.

The second preferred embodiment of the present invention is as shown in FIG. 7 and FIG. 8. The process is substantially the same as the first preferred embodiment of the present invention. The difference is that the iron body 10A forms the recess 12A at a bottom portion 14 (SOLE). The weight 20A can be placed in the recess 12A of the bottom portion 14, and the cover 12A is sealed by the cover 30A, and the cover 30A is flush with the surface of the bottom portion 14 for subsequent welding. , the bead grinding and forging process, the position of the cavities 12, 12A in this case is not limited to the striking surface or the bottom (SOLE), or the back of the iron body 10, 10A (BACK), can also obtain the aforementioned good effect.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the local changes or modifications made by the disclosed technology are still within the scope of the technical features of the present invention.

10‧‧‧ iron body

11‧‧‧Beat surface

12‧‧‧Inlay

13‧‧‧Place

20‧‧‧weights

30‧‧‧ Cover

Claims (4)

The utility model relates to an integrally formed forged composite golf iron head, comprising: an iron body, which forms a groove in the interior; a weighting block is arranged in the groove of the iron body, and the weight of the weight is density a ceramic material of 1.3 to 3.5 g/cc; a cover that is welded to the body of the iron body, and the weight is sealed in the groove of the iron body, so that the weight is covered The iron body and the inside of the cover are tightly coupled, and no gap is formed between the weight and the iron body. A body formed forged composite golf iron head according to claim 1, wherein the weight component comprises 60-70% yttrium oxide, 15-25% zirconia and 10-20% alumina. A one-piece forged composite golf iron head according to claim 1 or 2, wherein the groove is disposed on a striking surface of the iron body, and a surface of the cover is flush with a striking surface of the iron body. A one-piece forged composite golf iron head according to claim 1 or 2, wherein the groove is disposed at a bottom of the iron body, and a surface of the cover is flush with a bottom surface of the iron body.