TWI765502B - A method for forming the groove of a golf club head - Google Patents

Abstract

A method for forming the groove of a golf club head is used to solve the problem that in the conventional method of forming the groove of the head, the upper die does not correspond to the position of the groove of the head correctly, which leads to the problem that the head product is defective. This method includes: cold pressing a semi-finished club with a first forming pressure by a first die and a second die, the first die has a cavity, the back of the semi-finished club is positioned in the cavity, and the second die have a groove forming protrusion, and the groove forming protrusion is used to form a rough groove-shaped part on the face of the semi-finished club; and the first die is separated from the second die, Remove the semi-finished club form the first die; after the semi-finished club is positioned on the groove forming protrusion of the second die with the rough groove-shaped part, the semi-finished club is cold pressed with a second forming pressure.

Description

Golf club head groove forming method

The present invention relates to a method for forming a groove of a club head, in particular to a method for forming a groove of a golf club head by cold pressing to form the groove.

After the golf club head is formed, the grooves must be formed on the face. The methods of forming the grooves include various processing methods such as hot pressing, washing or cold pressing. When the grooves are formed by cold pressing, an upper and lower mold is used. For pressing the golf club head, the upper mold has a protruding die cavity corresponding to the shape of the line groove, and the upper mold presses the face of the golf club head to form the corresponding line groove. When the groove is pressed, the golf club head does not heat up, so it is impossible to press the groove completely at one time. After being roughly formed, the golf club head is coined a second time with the die to form a predetermined groove. However, during the second precision pressing of the upper mold, the golf club head will be displaced due to machine vibration or improper placement by humans. The mold does not correctly correspond to the line groove position of the first rough pressing, so that the line groove is skewed or deformed after the upper mold is pressed, resulting in the formation of defective products of the head, so that the yield rate of the head product cannot be improved.

In view of this, it is still necessary to improve the conventional method of forming the head line groove.

In order to solve the above problems, the purpose of the present invention is to provide a method for forming grooves of golf club heads, which can improve the accuracy of forming grooves by die pressing.

The directional or similar terms used throughout this disclosure, such as "front", "back", "left", "right", "top (top)", "bottom (bottom)", "inside", "outside" , "side surface", etc., mainly refer to the directions of the attached drawings, each directionality or its similar terms are only used to assist the description and understanding of the various embodiments of the present invention, and are not intended to limit the present invention.

The use of the quantifier "a" or "an" for the elements and components described throughout the present invention is only for convenience and provides a general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and a single The concept of also includes the plural case unless it is obvious that it means otherwise.

Similar terms such as "combined", "combined" or "assembled" mentioned in the whole text of the present invention mainly include the components that can be separated without destroying the components after the connection, or the components can not be separated after being connected, which are common knowledge in the field. It can be selected according to the material of the components to be connected or the assembly requirements.

The golf club head line groove forming method of the present invention comprises: cold pressing a semi-finished club head by a first mold and a second mold with a first forming pressure, the first mold having a cavity, and the semi-finished club head The back of the head is positioned in the cavity, the second mold has a line groove forming convex part, and a rough groove-shaped part is formed on the face of the semi-finished club head with the line groove forming convex part; and the first mold and the first mold are formed. The two molds are separated, and the semi-finished club head is removed from the first mold; after the semi-finished club head is positioned on the groove forming convex portion of the second mold with the rough groove-shaped portion, a second forming pressure is applied to the semi-finished club head. The semi-finished club head is cold pressed.

Accordingly, in the method for forming a groove of a golf club head of the present invention, the rough groove-shaped portion is formed by cold pressing the semi-finished product of the club head, and the rough groove-shaped portion is positioned on a mold having a corresponding groove forming convex portion. , to perform secondary cold pressing on the semi-finished club head, which can ensure that the semi-finished club head is stably positioned, so that the semi-finished club head will not be displaced due to the vibration of the mold or the negligence of artificial placement. When the first semi-finished product is subjected to secondary cold pressing, the face can accurately form the predetermined groove, which can achieve the effect of improving product yield.

Wherein, the semi-finished product of the club head is made of carbon steel material with a carbon weight percentage of 0.18-0.48. In this way, the semi-finished club head can have better plasticity, which can reduce the loss generated when the mold and the semi-finished club head are cold-pressed.

The semi-finished club head is cold-pressed for 3-10 seconds at a first forming pressure of 150-350 tons, and the semi-finished club head is cold-pressed for 3-10 seconds at a second forming pressure of 150-350 tons. In this way, the system has the effect of forming the predetermined groove on the face.

The semi-finished club head is cold-pressed for 3-10 seconds at a first forming pressure of 175-225 tons, and the semi-finished club head is cold-pressed for 3-10 seconds at a second forming pressure of 230-290 tons. In this way, the system has the effect of accurately shaping the predetermined groove on the face.

The rough groove-shaped portion has a plurality of grooves having a depth of 0.2 to 0.5 mm and a width of 0.5 to 0.9 mm. In this way, the function of substantially forming the predetermined groove on the face can be performed.

Wherein, the second forming pressure cold-presses the semi-finished rod head, so that the thick groove portion is formed into a predetermined line groove, and the depth change rate of the predetermined line groove relative to the thick groove portion is ≦17.5%. In this way, the predetermined line groove can be precisely formed.

Wherein, the second forming pressure is greater than the first forming pressure. In this way, the second forming pressure can more easily form the rough groove portion to a predetermined depth, which has the effect of improving the forming yield of the predetermined line groove.

Here, after grinding or milling the face on which the rough groove portion is formed, the rough groove portion is positioned on the groove forming convex portion. In this way, the club face can be kept flat, which has the effect of enhancing the aesthetics of the club face.

Wherein, the amount of grinding or milling of the face is 0.03 to 0.15 mm. In this way, the club face can be kept flat, which has the effect of enhancing the aesthetics of the club face.

The semi-finished club head is cold-pressed with a second forming pressure after positioning the semi-finished club head with the rough groove-shaped portion on another mold having the groove forming convex portion. In this way, the semi-finished club head can be quickly positioned, which has the effect of improving production efficiency.

Wherein, after the first mold and the second mold are reversed, the semi-finished club head is positioned on the second mold with the rough groove portion, and the semi-finished club head is cold-pressed with a second forming pressure. In this way, it is possible to avoid the slight difference in matching between the line groove forming convex portion and the thick groove-shaped portion caused by the manufacturing tolerance of different molds, which has the effect of improving the predetermined line groove forming yield.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings:

Referring to Figures 1 and 3, the method for forming a groove for a golf club head according to the present invention includes cold pressing a semi-finished club head H with a first forming pressure to form a face H1 of the semi-finished club head H. The rough groove-shaped portion H2, and after the rough groove-shaped portion H2 is positioned in a mold, the semi-finished club head H is cold-pressed with a second forming pressure.

Specifically, the semi-finished rod head H can be cold-pressed by a first mold 1 and a second mold 2. The first mold 1 has a cavity 11, and the cavity 11 can have a corresponding rod. The back of the head semi-finished product H is shaped so that the back of the head semi-finished product H can be positioned on the first mold 1, and the face H1 (face) of the head semi-finished product H faces the second mold 2, and the first mold The two molds 2 have a line groove forming convex portion 21, and the line groove forming convex portion 21 has a plurality of convex ribs arranged side by side, and the plurality of convex ribs are used to form a predetermined line groove. In this embodiment, the semi-finished product H of the club head can be made of carbon steel with a carbon weight percentage of 0.18-0.48. In this way, the semi-finished product H of the club head can have better plasticity, which can reduce the mold and the rod. The loss caused by the cold pressing of the first semi-finished product H.

Referring to Figures 2 and 3, the first mold 1 and the second mold 2 can be used for the first cold pressing of the semi-finished rod head H. The first mold 1 can be used as a lower mold, and the second mold 2 can be used as an upper mold, so that the second mold 2 is cold-pressed toward the first mold 1, and the first mold 1 and the second mold 2 can be formed with a first forming pressure of 150-350 tons (ton), After cold-pressing the semi-finished club head H for 3-10 seconds, preferably, the first mold 1 and the second mold 2 can press the semi-finished club head H with a pressure of 175-225 tons (ton). The second cold pressing, so that after the first mold is separated from the second mold, the face H1 of the semi-finished head H can form the rough groove H2, and the rough groove H2 is connected with the second mold 2. The line groove forming convex portion 21 corresponds to. In this embodiment, the thick groove portion H2 has a plurality of grooves with a depth of 0.2 to 0.5 mm and a width of 0.5 to 0.9 mm, so that the predetermined line grooves on the face H1 can be roughly formed. .

Please refer to FIG. 4, it is worth noting that the groove forming convex portion 21 exerts an external force on the face H1 to perform the first cold pressing. Therefore, after the rough groove portion H2 is formed, the rough groove portion H2 is formed The groove opening of the groove portion H2 is likely to form a collapsed portion T due to structural changes, and the collapsed portion T will cause the club face H1 between the two adjacent rough grooved portions H2 to be uneven. Preferably, The face H1 forming the two adjacent rough groove portions H2 may be ground or milled, that is, the face H1 between the two adjacent rough groove portions H2 may be ground or milled. In this embodiment, the grinding or milling amount of the face H1 can be 0.03-0.15 mm, so that the face H1 can be kept flat, which has the effect of improving the aesthetics of the face H1.

Referring to FIG. 5 , after removing the semi-finished club head H forming the rough groove H2 from the first mold 1 , then positioning the semi-finished club H from the rough groove H2 on the second The groove of the mold 2 forms the convex portion 21 to perform the second cold pressing on the semi-finished product H of the head. The second mold 2 may be another mold having the groove forming protrusions 21, or the first mold 1 and the second mold 2 may be reversed, so that the second mold 2 can be used as a lower mold, and The first mold 1 can be used as an upper mold, and then the rough groove-shaped portion H2 of the semi-finished head H is combined with the groove forming convex portion 21 of the second mold 2, so that the back of the semi-finished head H faces the first A mould 1 for cold pressing the first mould 1 towards the second mould 2 . In the present embodiment, the rough groove-shaped portion H2 of the semi-finished club head H can be positioned on the original second mold 2, so as to avoid the possibility of locating the semi-finished club head H in another second mold 2, which may result in different mold manufacturing processes. A slight difference in matching between the line groove forming convex portion 21 of the other second mold 2 and the thick groove-shaped portion H2 caused by the tolerance can improve the forming yield of the predetermined line groove. Since the rough groove-shaped portion H2 has a shape corresponding to the wire groove forming convex portion 21 of the mold (second mold 2 ), the plurality of rib structures of the wire groove forming convex portion 21 can be respectively aligned with each other. The plurality of grooves of the rough groove-shaped portion H2, thereby, can make the semi-finished product H of the club head firmly positioned on the groove forming convex portion 21 of the second mold 2 without displacement.

The first mold 1 and the second mold 2 can cold-press the semi-finished club head H for 3 to 10 seconds at a second forming pressure of 150-350 tons. Preferably, the first mold 1 and the The second die 2 can perform a second cold pressing on the semi-finished club head H with a pressure of 230-290 tons, so that the rough groove-shaped portion H2 can be extruded and shaped to form the predetermined line groove. In this embodiment, the face H1 is ground or milled to change the depth of the rough groove portion H2. Accordingly, the first mold 1 and the second mold 2 can use a second mold greater than the first molding pressure. The second forming pressure performs the second cold pressing on the semi-finished rod head H, so that the second forming pressure can more easily form the rough groove-shaped portion H2 to a predetermined depth, preferably, the depth of the predetermined line groove The thickness is 0.2 to 0.5 mm, the width is 0.5 to 0.9 mm, and the depth change rate of the predetermined line groove with respect to the thick groove-shaped portion H2 is ≦17.5%.

To sum up, the method for forming a groove of a golf club head of the present invention is to form the rough groove-shaped portion by cold pressing the semi-finished product of the golf club head, and position the thick groove-shaped portion on a groove having a corresponding groove forming convex portion. It can be used for secondary cold pressing on the mold, which can ensure that the semi-finished club head can be stably positioned, so that the semi-finished club head will not be displaced due to mold vibration or artificial placement. When the semi-finished product is subjected to secondary cold pressing, the face system can accurately form the predetermined groove, which can achieve the effect of improving the product yield.

Although the present invention has been disclosed by the above-mentioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the patent application attached hereto.

1: The first mold 11: Mold cavity 2: Second mold 21: Wire groove forming convex part H: Semi-finished club head H1: club face H2: Rough groove T: collapsed part

[Figure 1] A perspective view of a mold according to a preferred embodiment of the present invention. [Fig. 2] A schematic diagram of the first cold pressing of a preferred embodiment of the present invention. [FIG. 3] A schematic diagram of the forming of the rough groove-shaped portion in a preferred embodiment of the present invention. [FIG. 4] A partial enlarged view of the rough groove-shaped portion of a preferred embodiment of the present invention. [Fig. 5] A schematic diagram of the second cold pressing of a preferred embodiment of the present invention.

1: The first mold

11: Mold cavity

2: Second mold

21: Wire groove forming convex part

H: Semi-finished club head

H1: club face

Claims (11)

A golf club head line groove forming method, comprising: A first mold and a second mold are cold-pressed to a semi-finished club head with a first forming pressure, the first mold has a mold cavity, the back of the semi-finished club head is positioned in the mold cavity, and the second mold has a line groove forming convex portion, and a rough groove-shaped portion is formed on the face of the semi-finished club head with the line groove forming convex portion; and separating the first mold from the second mold, and removing the semi-finished club head from the first mold; The semi-finished club head is cold-pressed with a second forming pressure after the rough groove-shaped portion is positioned on the groove-forming convex portion of the second mold. As claimed in claim 1, the golf club head line groove forming method, wherein the semi-finished product of the club head is made of carbon steel material with a carbon weight percentage of 0.18-0.48. The method for forming grooves of golf club heads according to claim 1, wherein the semi-finished club head is cold-pressed for 3 to 10 seconds at a first forming pressure of 150-350 tons, and the second forming pressure is 150-350 tons, This semi-finished club head is cold-pressed for 3 to 10 seconds. The golf club head line groove forming method of claim 3, wherein the semi-finished club head is cold-pressed for 3-10 seconds with a first forming pressure of 175-225 tons, and the second forming pressure is 230-290 tons, This semi-finished club head is cold-pressed for 3 to 10 seconds. The method for forming a golf club head line groove according to claim 1, wherein the thick groove-shaped portion has a plurality of grooves having a depth of 0.2 to 0.5 mm and a width of 0.5 to 0.9 mm. The method for forming a line groove of a golf club head according to claim 1, wherein the second forming pressure is cold-pressed on the semi-finished club head, so that the thick groove-shaped portion is formed into a predetermined line groove, and the predetermined line groove is opposite to the rough line groove. The depth change rate of the groove portion is ≦17.5%. The method for forming a line groove of a golf club head according to claim 1, wherein the second forming pressure is greater than the first forming pressure. The method for forming a groove of a golf club head according to claim 1, wherein after grinding or milling the face on which the rough groove portion is formed, the rough groove portion is positioned on the groove forming convex portion. The method for forming a groove of a golf club head according to claim 8, wherein the grinding or milling amount of the face is 0.03-0.15 mm. The method for forming a groove for a golf club head according to claim 1, wherein after positioning the semi-finished club head with the rough groove-shaped portion on another mold having the groove forming convex portion, a second forming pressure is applied to the golf club. The first semi-finished product is cold pressed. The golf club head line groove forming method of claim 1, wherein after the first mold and the second mold are reversed, the semi-finished club head is positioned on the second mold with the rough groove-shaped portion, and a first The second forming pressure is cold pressing on the semi-finished product of the head.

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