TWI855865B - Method for manufacturing golf club heads with precision forging to form bottom textures - Google Patents

Abstract

A method for manufacturing a golf club head with a bottom pattern formed by precision forging, wherein the steps are to provide a rod-shaped metal substrate made of metal material, and pre-bend the rod-shaped metal substrate, and then forge a single-tilt club head blank with a first-stage forging mold to forge the pre-bent rod-shaped metal substrate into a single-tilt club head blank, and then forge a double-tilt club head blank. , the single-angled club head blank is forged into a double-angled club head blank with the second-stage forging die, and then in the step of forging a finished club head with a bottom texture, the double-angled club head blank is forged into a finished club head with a bottom texture and a double-angle using the third-stage forging die, thereby eliminating the time-consuming and processing cost problems of the existing finished club head being machined to form the bottom texture.

Description

Method for manufacturing golf club heads with precision forging to form bottom textures

The present invention relates to a method for manufacturing a golf club head, and in particular to a method for manufacturing a golf club head capable of forming a bottom texture by precision forging.

For example, the shape of the golf club head of an iron club is special. The club head of an iron club is mostly made of metal materials through precision casting or precision forging. At present, in order to improve the hitting performance of the club head, some iron clubs have textures on the sole of the club head. The texture structure on the sole of the club head reduces the friction resistance between the sole of the club head and the ground, and improves the smoothness of the swing and hitting the ball.

The existing method of forming the bottom texture of the club head of irons and other golf clubs is to use a computer numerical control (CNC) processing machine to form it by milling after the club head is formed.

However, due to the special shape of the club head, the club head must be installed on the CNC machine platform through a fixture. Due to the dimensional error of the club head installed in the fixture, and the texture must be processed on the bottom surface of the club head with a double tilt angle, the quality of the texture formed on the bottom of the club head is difficult to control. In addition, the use of milling processing has the problem of long processing time and high cost.

The purpose of the present invention is to provide a method for manufacturing a golf club head by precision forging to form a bottom texture, so as to solve the problem that the existing method for manufacturing a golf club head by processing to form a bottom texture is time-consuming and labor-intensive.

In order to achieve the above-mentioned purpose, the present invention proposes a method for manufacturing a golf club head with a bottom texture formed by precision forging, which includes: providing a rod-shaped metal substrate made of metal material, and pre-bending the rod-shaped metal substrate; forging a single-tilt club head blank, which is to use a first-stage forging mold set in a forging machine to forge the pre-bent rod-shaped metal substrate once or several times to form a single-tilt club head blank; forging a double-tilt club head blank The first step is to use a second-stage forging mold provided in the forging machine to forge the single-tilt club head blank once or several times to form a double-tilt club head blank; and the second step is to forge a finished club head with a bottom texture, which is to use a third-stage forging mold provided in the forging machine to forge the double-tilt club head blank once or several times to form a finished club head with a striking surface and double tilt, and to form a bottom texture integrally at the bottom of the finished club head.

The invention of the aforementioned golf club head manufacturing method has at least the following effects:

1. Shorten the manufacturing time and reduce the processing cost of the golf club head with bottom texture: The method of manufacturing the golf club head with bottom texture by precision forging of the present invention utilizes a three-stage progressive precision forging method to sequentially forge a provided rod-shaped metal substrate into a single-inclination club head blank, then forge a double-inclination club head blank, and finally forge a finished club head with bottom texture, so that Under the shape control of the precision forging mold, the bottom texture can be formed at the same time as the finished club head of the predetermined shape is forged, and the manufacturing of the club head with the bottom texture formed by precision forging can be completed more effectively, overcoming the problems of the existing club head manufacturing method of first completing the forging of the finished club head and then forming the bottom texture by mechanical processing, which requires long processing time and high processing cost.

2. Improve the precision and quality of the bottom texture of the club head: As mentioned above, the golf club head manufacturing method of the present invention that forms the bottom texture by precision forging is to forge the provided rod-shaped metal substrate in sequence to form a single-inclination club head blank, then forge to form a double-inclination club head blank, and finally forge to form a finished club head with a bottom texture, so that it can be matched with the shape control of the precision forging mold and the forging temperature control at different stages, and the club head with precision forging and forming the bottom texture can be manufactured by a three-stage progressive precision forging method, and the shape and position of the bottom texture can be precisely controlled, ensuring that the club head product has high precision, high quality and good quality consistency.

3. The bottom texture can be changed by using a forging mold; As mentioned above, the golf club head manufacturing method of the present invention that forms the bottom texture by precision forging is a step of forging and forming a finished club head with a bottom texture. While forging and forming the shape of the predetermined finished club head, the bottom texture is also forged, so various shapes can be changed according to different club head products, and the finished club head with consistent quality can be produced.

10: First-stage forging mold

20: Second-level forging mold

30: The third level forging mold

A1: Single-angle rod head blank

A10: Base of the embryo

A11: Rod connection part

A12: Hitting surface

A13: Bottom

A2: Double-tilt rod head blank

A20: Base of the club head

A21: Rod connection part

A22: Hitting surface

A23: Sole of the club head

A3: Finished club head

A30: Base of the club head

A31: Rod connection part

A32: Hitting surface

A33: Sole of the club head

A34: Bottom road texture

P1: First datum plane

P2: Second reference plane

S: Reference datum surface

FIG1 is a block diagram of the process of manufacturing a golf club head with a bottom texture formed by precision forging according to the present invention.

FIG2 is a schematic side view of a single-angled bar head blank forged using a first-stage forging die in the step of forging a single-angled bar head blank of the present invention.

FIG3 is a schematic side view of another perspective of the step of forging and forming the single-angled shaft blank of the present invention, using the first-stage forging die to forge and form the single-angled shaft blank.

FIG4 is a schematic side view of a double-tilt shaft head blank forged using a second-stage forging die in the step of forging a double-tilt shaft head blank of the present invention.

FIG5 is another side view schematic diagram of the step of forging and forming the double-tilt shaft head blank of the present invention, using the second-stage forging mold to forge and form the double-tilt shaft head blank.

FIG6 is a side plan view of a finished club head with bottom textures using a third-stage forging die in the step of forging a finished club head with bottom textures of the present invention.

FIG. 7 is a schematic plan view from another perspective of the third-stage forging mold used in the step of forging a finished club head with a bottom texture of the present invention to forge and form the finished club head with a bottom texture.

FIG8 is a schematic side view of the finished forged club head with bottom texture of the present invention.

FIG. 9 is a schematic plan view from another perspective of the finished forged club head with bottom texture of the present invention.

As shown in FIG1 , the specific implementation method of the golf club head manufacturing method of the present invention forging a bottom texture includes the following steps: providing a rod-shaped metal substrate made of metal material and pre-bending the rod-shaped metal substrate; forging a single-tilt club head blank; forging a double-tilt club head blank; and forging a finished club head with a bottom texture.

In the step of providing a rod-shaped metal substrate made of metal material and pre-bending the rod-shaped metal substrate, the metal material can be carbon steel, stainless steel or other metal materials. The carbon steel can be selected from materials such as 1020C, 1025C, 1035C, 1045C, or 35CrMo of the American Iron and Steel Institute-American Society of Automotive Engineers (AISI-SAE) according to the carbon content or alloy composition. The stainless steel can be selected from materials such as SUS303, SUS304, SUS431, 17-4PH of the Japanese Industrial Standard (JIS) according to the alloy composition.

As shown in FIG. 2 and FIG. 3, in the step of forging the single-angled club head blank A1, a first-stage forging mold 10 of a forging machine is used to forge a pre-bent rod-shaped metal substrate once or several times to form a single-angled club head blank A1, and the single-angled club head blank A1 forms a blank base A10 having a striking surface A12 and a shaft connecting portion A11 obliquely formed on one side of the blank base A10. The blank base A10 has a There is a bottom A13, the preliminary base A10 has a first reference plane P1, the first reference plane P1 is parallel to the hitting surface A12, and the first reference plane P1 has a first tilt angle θ1 and a second tilt angle θ2 respectively relative to a first axis and a second axis perpendicular to each other in a reference reference plane S of the forging machine, the first tilt angle θ1 is between 3° and 25°, and the second tilt angle θ2 is 0°. In the aforementioned step of forging and forming the single-angled bar head blank A1, the forging heating temperature is controlled between 700℃ and 1100℃. The forging heating temperature is adjusted according to the selected metal material. In this embodiment, the first inclination angle θ1 is controlled between 3° and 15°, and the forging heating temperature is controlled between 900℃ and 1100℃.

As shown in FIG. 4 and FIG. 5 , the step of forging the double-tilt club head blank A2 is to use a second-stage forging mold 20 provided in the forging machine to forge the single-tilt club head blank A1 once or several times to form a double-tilt club head blank A2, wherein the double-tilt club head blank A2 forms a club head base A20 and a club connecting portion A21 obliquely formed on one side of the club head base A20, wherein the club head base A20 includes a striking face plate portion having the striking face A22 and a and a club head bottom A23 located at the lower back section of the striking face plate portion, the club head base A20 having a second reference plane P2, the second reference plane P2 being parallel to the striking face A22, and the second reference plane P2 having a first tilt angle θ1 and a second tilt angle θ2 relative to a first axis and a second axis perpendicular to each other in the reference reference plane S, respectively, the first tilt angle θ1 being between 3° and 25°, and the second tilt angle θ2 being changed to be between 3° and 28°. In the step of forging the double-tilt rod head blank A2, the forging heating temperature is controlled between 700℃ and 1100℃. The forging heating temperature is adjusted according to the selected metal material. In this embodiment, the first tilt angle θ1 is controlled between 3° and 15°, and the forging heating temperature is controlled between 900℃ and 1100℃.

As shown in FIGS. 6 to 9, the step of forging the finished club head A3 having the bottom texture A34 is to use the third-stage forging mold 30 provided in the forging machine to forge the double-tilt club head blank A2 once or several times to form a finished club head A3 having a striking face and a double tilt. In essence, the finished club head A3 is the same as the double-tilt club head blank A2, and also has a club head base A30 and a club connecting portion A31 obliquely formed on one side of the club head base A30. The club head base A30 includes a The club head finished product A3 has a striking face plate portion with a striking face A32 and a club head bottom portion A33 located at the lower back portion of the striking face plate portion. The club head finished product A3 has a reference plane, which is the same as the second reference plane P2 of the club head base portion A20 of the double-tilted club head blank A2, and has a first tilt angle θ1 and a second tilt angle θ2 relative to the first axis and the second axis perpendicular to each other in the reference reference plane S, respectively, wherein the first tilt angle θ1 is between 3° and 25°, and the second tilt angle θ2 is between 3° and 28°. In addition, the bottom of the club head finished product A3 is further integrally formed with a bottom texture A34. In the step of forging the bottom pattern A34, the forging heating temperature is controlled between 700℃ and 1100℃. The forging heating temperature is adjusted according to the selected metal material. In this embodiment, the first tilt angle θ1 is controlled between 3° and 15°, and the forging heating temperature is controlled between 700℃ and 1000℃.

In the step of forging and forming the double-tilt club head blank A2, while forging and forming the double-tilt club head blank A2, the second-stage forging mold 20 can be used to further move the mold line of the forged double-tilt club head blank A2 from the middle line position of the lower section of the striking surface plate portion to the bottom edge adjacent to the striking surface. In the step of forging and forming the finished club head A3 having the bottom texture A34, the distribution area of the bottom texture A34 formed on the finished club head A3 can be extended to the bottom edge adjacent to the striking surface. The pattern may be a plurality of linear stripes arranged at intervals, or a plurality of circular or elliptical concave dots arranged at intervals, or a plurality of polygonal (such as triangle, quadrilateral, pentagon, hexagon, octagon...) concave dots arranged at intervals, or other geometric concave patterns, etc.

In the golf club head manufacturing method of the present invention, after the step of forging the finished club head A3 having the bottom texture A34, the finished club head A3 formed by forging is further ground to remove the mold line and burrs of the finished club head A3, and then a surface treatment step is performed to form a predetermined shape of the club head.

As can be seen from the above description, the golf club head manufacturing method of the present invention that forms the bottom texture A34 by precision forging mainly utilizes a three-stage progressive precision forging method, and the provided rod-shaped metal substrate is sequentially forged to form a single-inclination club head blank, then forged to form a double-inclination club head blank A2, and finally forged to form a club head finished product A3 with the bottom texture A34, so that it can be matched with the shape control of the precision forging mold to produce a golf club head with the bottom texture A34 by precision forging. The bottom texture A34 can be made into various shapes according to different club head products, and its shape and position can be precisely controlled to ensure that the mass-produced club head products have high quality and good quality consistency.

Claims (5)

A method for manufacturing a golf club head with a bottom texture formed by precision forging includes: providing a rod-shaped metal substrate made of metal material and pre-bending the rod-shaped metal substrate; forging a single-tilt club head blank by using a first-stage forging die set in a forging machine to forge the pre-bent rod-shaped metal substrate once or several times to form a single-tilt club head blank; forging a double-tilt club head blank by using a first-stage forging die set in a forging machine to forge the pre-bent rod-shaped metal substrate once or several times to form a double-tilt club head blank. A second-stage forging mold of the forging machine forges the single-tilt club head blank once or several times to form a double-tilt club head blank; and a step of forging a finished club head with a bottom texture, which is to use a third-stage forging mold provided in the forging machine to forge the double-tilt club head blank once or several times to form a finished club head with a striking surface and double tilt, and to integrally form a bottom texture at the bottom of the finished club head. A method for manufacturing a golf club head with a bottom texture formed by precision forging as described in claim 1, wherein in the step of forging a single-tilt club head blank, the base of the forged blank has a first reference plane, and the first reference plane has a first tilt angle and a second tilt angle relative to a first axis and a second axis perpendicular to each other in a reference reference plane of the forging machine, respectively, the first tilt angle is between 3° and 25°, and the second tilt angle is 0°; the forging step is performed to form a double-tilt club head blank. In the step of forging a double-tilt club head blank, the forged double-tilt club head blank includes a club head base, the club head base includes a striking face plate portion having the striking face and a club head bottom portion located at the lower back portion of the striking face plate portion, the club head base has a second reference plane, the first tilt angle of the second reference plane relative to the first axis of the reference reference plane is between 3° and 25°, and the second tilt angle of the second reference plane relative to the second axis of the reference reference plane is between 3° and 28°. A method for manufacturing a golf club head with bottom texture formed by precision forging as described in claim 2, wherein, in the step of forging and forming a double-tilted club head blank, the second-stage forging mold moves a parting line of the forged double-tilted club head blank forward from the middle line position of the lower section of the striking face plate portion to adjacent to the bottom edge of the striking face; in the step of forging and forming a finished club head with bottom texture, the bottom texture distribution area forged and formed on the finished club head is adjacent to the bottom edge of the striking face. A method for manufacturing a golf club head with a bottom texture formed by precision forging as described in any one of claims 1 to 3, wherein in the step of forging a single-tilt club head blank, the forging heating temperature is controlled between 700°C and 1100°C; in the step of forging a double-tilt club head blank, the forging heating temperature is controlled between 700°C and 1100°C; in the step of forging a finished club head with a bottom texture, the forging heating temperature is controlled between 700°C and 1100°C. A method for manufacturing a golf club head with a bottom texture formed by precision forging as described in claim 4, wherein the bottom texture is a plurality of linear stripes arranged at intervals, or a plurality of circular, elliptical or polygonal concave dots arranged at intervals.

Images