CN1631473A - Golf club friction welded structure and method - Google Patents

Abstract

A friction welding structure of a golf club and a method thereof. In order to provide a golf sport appliance part and a manufacturing method thereof, which can improve the combination reliability, form higher combination strength, improve the yield of finished products and prolong the service life, the invention is provided, and the structure of the golf sport appliance part comprises a first part, a second part and a friction welding inclined plane; the first and second parts are made of first and second metal materials and provided with first and second butting surfaces; the friction welding inclined plane is convexly arranged on one of the first butt joint surface and the second butt joint surface and forms a rotating axis which is axially corresponding to the other butt joint surface; the method comprises forming a friction welding bevel on one of the first and second abutting surfaces; abutting the friction welding inclined plane which is convexly arranged on the abutting surface against the other abutting surface; the first and second butting surfaces on the first part and the second part are relatively rotated along the same axis to carry out friction welding to form a welding joint part; the welding parts of the first and second contact surfaces are subjected to surface processing.

Description

Golf club friction welded structure and method

technical field

The invention belongs to golf equipment components and a manufacturing method thereof, in particular to a golf club friction welding structure and a method thereof.

Background technique

Common U.S. Patent No. 5,769,307 'Iron-Type Golf Club Head and Production Method Therefor' and Patent No. 5,885,179 'Iron-Type Golf Club Head Production Method Therefor' Method Therefor)', as shown in Figure 1 and Figure 2, the golf club head usually includes a club head body 10', a sleeve neck 20' and a shaft 30'.

The club head body 10' is made of a first metal material, such as stainless steel, and its front is combined with a striking panel 11', and a heel 12' is formed on one side of the striking panel 11', and a first The extension end 13' of the abutting surface 14'.

The sleeve neck 20' is made of a second metal material, such as titanium alloy. The top of the sleeve neck 20' is provided with a coupling hole 21', and the bottom of the sleeve neck 20' has a second abutting surface 22'.

When assembling, it is to choose to use friction welding (friction welding) to combine the club head body 10' and the sleeve neck 20'. When combining, first apply force F' to make the first and second abutment surfaces 14', 22' abut against each other, and make the first abutment surface 14' (or second abutment surface 22') abut against the second abutment surface. The surface 22' (or the first abutting surface 14') rotates coaxially; then, the first and second abutting surfaces 14', 22' are solid-state bonded due to high temperature generated by friction. In this way, the collar 20' can be quickly combined with the extension end 13' of the club head body 10'.

Although the above-mentioned golf club head uses friction welding to combine the sleeve neck 20' on the club head body 10', it can simplify the manufacturing process and reduce the manufacturing cost compared with general welding or brazing.

However, the implementation of the friction welding method is still prone to the following problems:

As shown in Figures 3 and 4, after friction welding, since the first abutting surface 14' of the first metal material (the stainless steel on the left side in Figure 4) and the second metal material (the stainless steel on the right side in Figure 4) Titanium alloy) usually produces an intermetallic layer (inter metallic layer, or hardened layer, intermediate region between the first and second metal materials) between the second abutting surfaces 22 ′. Although the intermetallic layer can be used to connect the first and second abutment surfaces 14', 22', when the welding compatibility of the first and second metal materials is insufficient, the metal structure of the intermetallic layer will not be conducive to improving the bonding strength , and it is easy to cause structural fragmentation or reduce elastic deformation capacity after stretching. As a result, when the finished golf club is further adjusted to the inclination angle A of the sleeve neck 20 ′ or used for swinging a ball, the joint position of the club head body 10 ′ and the sleeve neck 20 ′ may be broken, thereby affecting the yield of the finished product or its use. life. The shot test proves that when the finished golf club is shot less than 1000 times (using a standard weight golf ball to hit the hitting panel 11' of the head body 10' at a ball speed of 50 m/sec), the head body 10' and the sleeve will not be damaged. Neck 20' is a serious fault prone to cracking or breaking off.

Furthermore, when the friction welding method is used to join any other two adjacent parts of the golf club head, as long as there is insufficient welding compatibility between the metal materials of the two adjacent parts, it may also cause the two adjacent parts Combination does not apply to friction welding process. Therefore, there is still a need to further improve the conventional friction welding structure and method of golf clubs.

Contents of the invention

The object of the present invention is to provide a golf club friction welding structure and method thereof which can improve bonding reliability, form higher bonding strength, improve product yield, and prolong service life.

The golf club friction welding structure of the present invention includes a first part, a second part and a friction welding slope; the first part constitutes a part of the golf club, which is made of a first metal material and has a first contact surface; the second part The part constitutes another part of the golf club, which is made of a second metal material and provided with a second abutment surface; the friction welding slope is protruded on the two abutment surfaces of the first abutment surface and the second abutment surface One abutment surface and form an axis corresponding to the rotation axis of the other abutment surface; the friction welding method for golf clubs of the present invention includes the following steps:

friction welding bevel

A friction welding slope is formed on one of the two abutment surfaces of the first abutment surface of the first part and the second abutment surface of the second part of the golf club;

Against the friction welded bevel

abutting the friction welding inclined surface protruding on the abutment surface against another abutment surface;

Rotate the first and second abutment surfaces

Make the first and second abutment surfaces on the first part and the second part rotate relative to each other along the same axis to perform friction welding to form a weld joint;

surface treatment

Surface processing is carried out on the welding parts of the first and second abutting surfaces.

in:

The friction welding inclined surface is a conical surface or a pyramidal surface; or it is composed of a ring convex body and a concave part; or it is composed of a ring convex body, a ring concave part and a central convex part.

The apex angle of the friction welding inclined surface in the form of a conical or pyramidal surface is between 90° and 180°; the included angle at the intersection of the tangent lines at the two ends of the ring convex body, concave portion, ring concave portion, and central convex portion is between 90° and 180° between.

The first abutting surface of the first part and the abutting surface of the second part are respectively formed on the extension end of the club head body and the sleeve neck.

The first abutting surface of the first part and the abutting surface of the second part are respectively formed in the chamber of the club head body and the counterweight.

The first and second metal materials are different from each other; the first metal material is stainless steel, carbon steel, titanium alloy, low alloy steel, cast iron, nickel-based alloy, structural steel, iron-manganese aluminum alloy or super alloy; the second metal material It is stainless steel, carbon steel, titanium alloy, low alloy steel, cast iron, nickel base alloy, structural steel, ferromanganese aluminum alloy, superalloy, tungsten iron nickel alloy, tungsten alloy, molybdenum alloy or copper alloy.

A ring groove is recessed on the outer periphery of the extension end of the rod head body adjacent to the first abutting surface.

The peripheral edge of the second abutting surface on the neck sleeve forms a ring flange for the first abutting surface of the club head body to be easily and accurately aligned with the second abutting surface.

The surface roughness of the first abutting surface and the second abutting surface is generally maintained below Ra25 μm.

In the step of forming the friction welding slope, the friction welding slope is a conical surface or a pyramid surface; or is composed of a ring convex body and a concave part; or is composed of a ring convex body, a ring concave part and a central convex part; the friction welding slope of a conical surface or a pyramid surface The apex angle is between 90° and 180°; the included angle at the intersection of the tangent lines at the two ends of the ring convex body, the concave portion, the ring concave portion and the central convex portion is between 90° and 180°.

In the step of forming the friction welding slope, the first abutting surface of the first part and the abutting surface of the second part are respectively formed on the extension end of the rod head body and the sleeve neck.

In the step of forming the friction welding slope, the first abutting surface of the first part and the abutting surface of the second part are respectively formed in the chamber of the rod head body and on the counterweight.

In the step of forming the friction welding slope, the extension end of the rod head body is adjacent to the outer periphery of the first abutting surface, and a ring groove is recessed.

In the step of forming the friction welding inclined surface, the peripheral edge of the second abutting surface on the collar forms a ring flange for the first abutting surface of the rod head body to be easily and precisely aligned with the second abutting surface.

Since the friction welding structure of the golf club of the present invention includes the first part, the second part and the friction welding slope; The inclined surface is protruded on one of the first and second abutting surfaces and forms an axial axis corresponding to the rotation axis of the other abutting surface; the golf club friction welding method of the present invention is included on the first and second abutting surfaces A friction welding slope is formed on one of the abutment surfaces; the friction welding slope protruding on the abutment surface is abutted against the other abutment surface; the first and second abutments on the first part and the second part are abutted The surfaces are relatively rotated along the same axis to perform friction welding to form a welding joint; surface processing is performed on the welding parts of the first and second abutting surfaces. Since the abutting surface of the convexly provided friction welding slope of the present invention utilizes the friction welding slope to abut against another abutting surface, there is only a small contact between the two abutting surfaces during the preliminary friction welding operation. In this way, it is beneficial to concentrate the high pressure of the force F on a small contact area, thereby obtaining a higher friction welding temperature, which can effectively avoid the formation of an intermetallic layer; and expand the bonding area, thereby making the first and second metal materials It can form a better welding combination; it can indeed improve the bonding strength and bonding reliability of the finished golf club, and relatively improve the yield rate of the finished golf club and prolong its service life. It not only improves the bonding reliability and forms a higher bonding strength, but also improves the yield rate of finished products and prolongs the service life, so as to achieve the purpose of the present invention.

Description of drawings

Fig. 1 is a schematic perspective view of the exploded structure of a conventional golf club friction welding structure.

Fig. 2 is a schematic cross-sectional view of a conventional golf club friction welding structure.

Fig. 3 is a photographic view of the first and second abutment surfaces of a conventional golf club friction welding structure.

Fig. 4 is a photomicrograph of the first and second abutting surfaces of a conventional golf club friction welding structure.

Fig. 5 is a schematic perspective view of the exploded structure of the friction welding structure of the golf club of the present invention.

Fig. 6 is a partially enlarged cross-sectional view of part A in Fig. 5 .

Fig. 7 is a schematic diagram of the steps of the friction welding method for golf clubs of the present invention.

Fig. 8 is a perspective view of the combined structure of the friction welding structure of the golf club of the present invention.

Fig. 9 is a photographic view of the combined cross-section of the first and second abutting surfaces of the friction welding structure of the golf club according to the present invention.

Fig. 10 is a photomicrograph of the combined cross-section of the first and second abutting surfaces of the friction welding structure of the golf club according to the present invention.

Fig. 11 is a schematic perspective view of the disassembled structure of the friction welding structure of the golf club of the present invention (the friction welding slope is pyramid-shaped).

Fig. 12 is a partially enlarged cross-sectional view of the friction welding structure of the golf club of the present invention (the outer peripheral edge of the friction welding slope connects to the outer friction welding slope).

Fig. 13 is a partially enlarged sectional view of the friction welding structure of the golf club of the present invention (an annular groove is recessed on the outer periphery adjacent to the first abutting surface).

Fig. 14 is a partially enlarged sectional view of the friction welding structure of the golf club of the present invention (the peripheral edge of the second abutting surface forms a ring flange).

Fig. 15 is a partially enlarged cross-sectional view of the friction welding structure of the golf club of the present invention (the outer peripheral edge of the first abutting surface forms a ring convex body).

Fig. 16 is a partially enlarged cross-sectional view of the friction welding structure of the golf club of the present invention (the first abutting surface forms a ring convex body and a concave part).

Fig. 17 is a partially enlarged cross-sectional view of the friction welding structure of the golf club of the present invention (the first abutting surface forms a ring protrusion 147, a central protrusion located in the center as a semicircular protrusion, a ring recess and a central protrusion).

Fig. 18 is a schematic perspective view of the disassembled structure of the friction welding structure of the golf club of the present invention (the first and second parts are respectively the club head body and the counterweight).

Fig. 19 is a partially enlarged cross-sectional view of part B in Fig. 18 .

Fig. 20 is a partially enlarged cross-sectional view of the friction welding structure of the golf club of the present invention (the first and second parts are the club head body and the counterweight respectively).

Fig. 21 is a three-dimensional view of the combined structure of the friction welding structure of the golf club of the present invention (the first and second parts are the club head body and the counterweight respectively).

Detailed ways

As shown in FIG. 5 , FIG. 6 , FIG. 7 , and FIG. 8 , the friction welding structure of the golf club of the present invention includes a first part, a second part and at least one friction welding slope 140 .

The first part is the club head body 10 made of the first metal material, which constitutes a part of the golf club. The front of the club head body 10 is combined with a hitting face plate 11 for hitting a golf ball. One side of the hitting face plate 11 forms a heel portion 12, and an extension end 13 is formed upward on the heel portion 12, and a first abutment is formed on the top surface of the extension end 13. The surface 14, the first abutting surface 14 is circular.

The second part is the collar 20 made of the second metal material, which constitutes another part of the golf club. A coupling hole 21 for coupling the rod body 30 is defined at the top of the sleeve neck 20 , and a second abutting surface 22 is formed at the bottom thereof, and the second abutting surface 22 is circular. The rod body 30 is made of other metal or non-metal materials, such as carbon fiber composite materials.

The friction welding slope 140 is concentric and conical, and is preferably formed on an abutting surface with a relatively high hardness of the metal material. For example, the friction welding slope 140 can be protruded on the first abutting surface 14 and substantially axially correspond to the rotation axis of the second abutting surface 22 . Meanwhile, the apex angle θ1 of the friction welding slope 140 is preferably between 90° and 180°. Furthermore, under the premise that the first metal material and the second metal material are different from each other, the first metal material and the second metal material can be selected from stainless steel, titanium alloy, carbon steel, low alloy steel, cast iron, nickel-based Alloys, structural steels, ferromanganese aluminum alloys or superalloys.

As shown in Figure 7 and Figure 8, the golf club friction welding method of the present invention comprises the following steps:

friction welding bevel

A friction welding slope 140 is formed on the first part of the golf club, such as the first contact surface 14 of the club head body 10 . The friction welding slope 140 or 140a protruding from the first abutting surface 14 or 14a is a conical or pyramidal surface; The friction welding inclined surface 140f on the first abutting surface 14f is composed of a ring convex body 145 and a concave portion 146; 149 constitute. The apex angle of the friction welding slope 140 that is a conical surface or a pyramidal surface is between 90° and 180°; at the intersection of the tangent lines at the two ends of the ring convex body 144 (145, 147), the concave portion 146, the ring concave portion 148 and the central convex portion 149 The included angle is between 90° and 180°.

The first abutting surface 14 of the first portion and the abutting surface 22 of the second portion are respectively formed on the extension end 13 of the club head body 10 and the collar 20 .

The first abutting surface 16 of the first part and the abutting surface 41 of the second part are respectively formed in the chamber 15 of the club head body 10 and on the counterweight 40 .

A ring groove 143 is recessed on the outer periphery of the extension end 13 of the club head body 10 adjacent to the first abutting surface 14c.

The peripheral edge of the second abutting surface 22d on the collar 20 forms a ring flange 23 for the first abutting surface 140 of the club head body 10 to easily and accurately align with the second abutting surface 22d.

Against the friction welded bevel

The friction welding inclined surface 140 protruding from the first abutting surface 14 abuts against the second part of the golf club, such as the second abutting surface 22 of the collar 20 .

Rotate the first and second abutment surfaces 14, 22

The first and second abutting surfaces 14, 22 on the club head body 10 and the neck sleeve 20 are relatively rotated along the same axis to perform friction welding to form a welding joint.

surface treatment

Surface processing is performed on the welded parts of the first and second abutting surfaces 14, 22 to form a finished golf club.

In the above-mentioned friction welding process, the first and second abutting surfaces 14 and 22 are abutted against each other by applying force F first. At this time, the vertex of the friction welding slope 140 protruding from the first contact surface 14 is substantially in contact with the center of the second contact surface 22 . Next, the first abutting surface 14 (or the second abutting surface 22 ) is rotated relative to the second abutting surface 22 (or the first abutting surface 14 ) along the axis. In this way, the first abutting surface 14 and the second abutting surface 22 can generate high temperature due to friction to form a solid connection, so that the collar 20 is quickly combined with the extension end 13 of the club head body 10 . Finally, after the club head body 10 and the collar 20 are preliminarily combined into one body, proper surface processing is performed on the joint position to remove the remaining material of plastic deformation. In this way, the finished golf club can be obtained.

As shown in Fig. 9 and Fig. 10, since the first abutting surface 14 of the present invention abuts against the second abutting surface 22 by the conical apex of the friction welding inclined surface 140, therefore, when performing the preliminary friction welding operation, the first There is only a small contact area between the first abutment surface 14 and the second abutment surface 22, which is beneficial to concentrate the high-pressure force F on a small contact area, thereby obtaining a higher friction welding temperature, which can Effectively avoid the formation of an intermetallic layer; and enlarge the bonding area, so that the first and second metal materials can form better welding bonding.

Table 1. The structure of the shelling test after friction welding the stainless steel club head body and the titanium alloy sleeve neck: Contact surface diameter Butt joint surface condition Tensile strength(kg/mm ² ) Shelling Test Results 13.11mm general plane 16.85 easy to break 13.09mm general plane 14.18 easy to break 13.06mm Curvature radius 50mm 24.81 slightly breakable 13.09mm Curvature radius 30mm 38.51 slightly breakable 12.80mm Curvature radius 20mm 48.20 unbroken 12.95mm Curvature radius 20mm 45.57 unbroken 6.09mm Curvature radius 20mm 54.44 slightly broken S20C Not friction welded 56.34 unbroken

As shown in Table 1 below, it has been proved by the shot test that the finished golf club of the present invention can be shot 3,000 times under the condition of properly controlling the radius of curvature of the friction-welded joint surface (using a golf ball of standard weight to impact at a ball speed of 50 m/sec) The striking panel 11 of the club head body 10). After the test, the first part, such as the club head body 10 and the second part, such as the sleeve neck 20 have relatively high tensile strength, and tend not to be separated, cracked or broken. Therefore, the friction welding slope 140 can indeed improve the bonding strength and bonding reliability of the finished golf club. With sufficient bonding strength reliability, the collar 20 allows further adjustment of the inclination A, and the finished golf club can also prolong the service life relatively.

In addition, the surface roughness of the first and second abutting surfaces 14 and 22 is generally maintained at Ra25 μm or less. Thereby, when the first and second abutting surfaces 14, 22 are in contact with each other, the present invention can use the surface roughness to remove the oxide layer on each contact surface at the initial stage of friction welding, so as to prevent the oxide layer from affecting the combination of friction welding strength and reliability.

As shown in FIG. 11 , the friction welding slope 140a protruding from the first abutting surface 14a is in the shape of a concentric pyramid. Thus, during friction welding, the friction welding slope 140a can also relatively increase the abutment pressure, increase the friction welding temperature, form a better welding structure, avoid the formation of an intermetallic layer, expand the joint area, and then improve the joint strength of friction welding and reliability.

As shown in FIG. 12 , the friction welding bevel 140 protruding from the first abutting surface 14b is in the shape of a concentric cone or pyramid, and extends outward from the outer periphery of the friction welding bevel 140 to form a connection with the outer periphery of the friction welding bevel 140 The outer friction welding bevel 142. The apex angle θ1 of the friction welding slope 140 is preferably between 90° and 180°. The included angle θ2 between the outer friction welding slope 142 and the friction welding slope 140 is preferably between 120° and 180°. Thereby, during friction welding, the friction welding bevel 140 and the outer friction welding bevel 142 can also relatively increase the contact pressure, increase the friction welding temperature, form a better welding bond, avoid the formation of an intermetallic layer, expand the bonding area, and then improve Joint strength and reliability of friction welding.

As shown in FIG. 13 , the first part of the friction welding slope 140 protruding from the first abutting surface 14c, such as the extension end 13 of the rod head body 10 adjacent to the outer periphery of the first abutting surface 14, is recessed with a ring groove 143, so that The outer peripheral edge adjacent to the first abutting surface 14 has higher plastic deformation capacity. Thereby, during the friction welding process, when the first abutting surface 14 and the second abutting surface 22 are friction-welded to the outer peripheral edge of the first abutting surface 14 , the ring groove 143 allows adjacent to the first abutting surface The outer peripheral edge of 14 is more likely to be solid-state bonded due to the high heat of friction, thereby increasing the reliability of the bonding of the outer peripheral edges of the first and second abutting surfaces 14 and 22 .

As shown in FIG. 14 , the second portion, such as the peripheral edge of the second abutting surface 22 d of the collar 20 forms a ring flange 23 . In this way, the ring flange 23 can make the first part, such as the first abutting surface 14 of the club head body 10 , easily and precisely align with the second abutting surface 22d. After the friction welding is completed, the present invention can choose to keep the ring flange 23, or remove the ring flange 23 by using a suitable surface processing method, so as to obtain the finished golf club as shown in FIG. 8 .

As shown in FIG. 15 , the first part, such as the outer peripheral edge of the first abutting surface 14 e of the extension end 13 of the club head body 10 , forms a ring convex body 144 in the form of a semicircular convex portion. And the included angle θ3 at the intersection of the tangent lines between the two ends of the ring protrusion 144 is preferably between 90° and 180°. In this way, during friction welding, the abutment pressure is relatively increased by the ring convex body 144, the friction welding temperature is increased, a better welding joint is formed, the formation of an intermetallic layer is avoided, and the joint area is enlarged, thereby improving the joint strength of friction welding and reliability.

As shown in Figure 16, the first part, such as the first abutment surface 14f of the extension end 13 of the club head body 10, forms a semicircular convex ring 145 located on the outer periphery of the first abutment surface 14f and a semicircular convex body located in the center. Semicircular recess 146 . The angle θ4 at the intersection of the tangent lines between the two ends of the ring protrusion 145 is preferably between 90° and 180°. The angle θ5 at the intersection of the tangent lines between the two ends of the concave portion 146 is preferably between 90° and 180°. Thereby, when performing friction welding, the abutment pressure can be relatively increased by means of the ring convex body 145 and the concave portion 146, the friction welding temperature can be increased, a better welding joint can be formed, the formation of an intermetallic layer can be avoided, the joint area can be enlarged, and the friction can be improved. Bonding strength and reliability of welding.

As shown in Figure 17, the first part, such as the first abutment surface 14g of the extension end 13 of the club head body 10, forms a semicircular convex ring convex body 147 located on the outer peripheral edge of the first abutment surface 14g, and a ring convex body 147 in the center. The central convex body 149 of the semicircular convex part and the ring concave part 148 connected between the ring convex body 147 and the central convex body 149 form a semicircular concave part. The included angles θ6 , θ7 , and θ8 at the intersections of the tangent lines at the two ends of the ring protrusion 147 , the central protrusion 149 , and the ring recess 148 are preferably between 90° and 180°. Thereby, during the preliminary friction welding, the abutment pressure can be relatively increased by the ring protrusion 147, the ring recess 148 and the central protrusion 149, the friction welding temperature can be increased, a better welding combination can be formed, and the formation of an intermetallic layer can be avoided. Expand the bonding area, thereby improving the bonding strength and reliability of friction welding.

As shown in FIG. 18 , FIG. 19 , FIG. 20 , and FIG. 21 , the friction welding structure of the golf club of the present invention includes a first part, a second part and at least one friction welding slope 160 .

The first part is the club head body 10 made of the first metal material, which constitutes a part of the golf club. An appropriate part of the club head body 10 , such as the bottom, is provided with a chamber 15 , and a first abutting surface 16 is formed in the chamber 15 .

The second part is a weight 40 made of a second metal material, which constitutes another part of the golf club. The counterweight 40 forms a second abutment surface 41 corresponding to the first abutment surface 16 .

The friction welding inclined surface 160 is selected to be formed on the abutting surface with a higher hardness of the metal material. For example, the friction welding slope 160 is protruded on the first abutting surface 16 (or the second abutting surface 41 ), and its axial direction corresponds to the rotation axis of the first abutting surface 16 (or the second abutting surface 41 ). Heart. Thereby, under the applied force, the club head body 10 and the counterweight 40 can relatively increase the abutment pressure through the friction welding slope 160, increase the friction welding temperature, form a better welding joint, avoid the formation of an intermetallic layer, and expand the joint area, thereby improving the bonding strength and reliability of friction welding. After the friction welding is completed, the protruding part of the counterweight is removed by using a suitable surface processing method, and the finished golf club as shown in FIG. 8 can be obtained. Furthermore, the first part, such as the first metal material of the club head body 10 is selected from stainless steel, titanium alloy, low alloy steel, cast iron, nickel-based alloy, structural steel, iron-manganese-aluminum alloy or superalloy. The second part, such as the second metal material of the counterweight 40 is selected from tungsten-iron-nickel alloy, tungsten alloy, molybdenum alloy, copper alloy or metal or alloy with a specific gravity greater than 7.6g/cm ³ .

As mentioned above, compared with the conventional golf club head shown in Fig. 1 and Fig. 2, which has the disadvantage that an interlayer metal layer is easily formed at the friction welding position and affects the bonding strength, the present invention forms the second metal layer on the first abutting surface The friction welding slope on the abutment surface can indeed improve the bonding strength, bonding reliability, finished product yield and prolong the service life of the first part and the second part, and when the first part is the club head body 10 and the second part is the sleeve When the neck is 20, it is also possible to make the finished golf club easy to adjust the angle of the sleeve neck 20.

The friction welding structure of the golf club of the present invention is to make at least one friction welding slope be formed on the abutting surfaces of any two adjacent parts of the golf club, so that when performing friction welding, the friction welding slope can relatively increase the distance between the two abutting surfaces. The abutment pressure between them, the expansion of the joint area, and the increase of the friction welding temperature can avoid the formation of interlayer metal layers with unfavorable structural strength between adjacent parts. Therefore, the present invention can indeed improve the bonding strength and reliability of each part of the club, relatively improve the yield of finished products of the club and prolong its service life.

Claims (15)

1, a kind of golf clubs friction welding structure, it comprises first position and second position; First position constitutes the part of golf clubs, and it makes and be provided with first bearing surface by first metal material; Second position constitutes another part of golf clubs, and it makes and be provided with second bearing surface by second metal material; It is characterized in that being convexly equipped with on the bearing surface in two bearing surfaces of described first bearing surface and second bearing surface friction welding inclined-plane that forms axially corresponding to another bearing surface axis of rotation.

2, golf clubs friction welding structure according to claim 1 is characterized in that described friction welding inclined-plane is taper seat or pyramidal surface; Or constitute by ring raised body and recess; Or constitute by ring raised body, circular rabbet and central spud.

3, golf clubs friction welding structure according to claim 2, the drift angle that it is characterized in that the described friction welding inclined-plane that is taper seat or pyramidal surface is between 90 ° to 180 °; The angle at ring raised body, recess, circular rabbet and central spud two-end-point point of intersection of tangents place is between 90 ° to 180 °.

4, golf clubs friction welding structure according to claim 1 is characterized in that first bearing surface at described first position and the bearing surface at second position are formed at respectively on rod head noumenon elongated end and the cover neck.

5, golf clubs friction welding structure according to claim 1, the bearing surface that it is characterized in that first bearing surface at described first position and second position are formed in the rod head noumenon room respectively and on the balancing weight.

6, golf clubs friction welding structure according to claim 1 is characterized in that described first and second metal material unlike material each other; First metal material is stainless steel, carbon steel, titanium alloy, low-alloy steel, cast iron, nickel-base alloy, structural steel, ferrimanganic aluminium alloy or superalloy; Second metal material is stainless steel, carbon steel, titanium alloy, low-alloy steel, cast iron, nickel-base alloy, structural steel, ferrimanganic aluminium alloy, superalloy, tammite nickel alloy, tungsten alloy, molybdenum alloy or copper alloy.

7, golf clubs friction welding structure according to claim 4 is characterized in that the periphery of contiguous first bearing surface of elongated end of described rod head noumenon is arranged with annular groove.

8, golf clubs friction welding structure according to claim 4 is characterized in that described neck puts the formation of the second bearing surface periphery and is easy to precisely being positioned at the ring flange of second bearing surface for rod head noumenon first bearing surface.

9, golf clubs friction welding structure according to claim 1 is characterized in that the surface roughness of described first bearing surface and second bearing surface remains on below the Ra25 μ m usually.

10, a kind of golf clubs friction welding method is characterized in that it comprises the following step:

Form the friction welding inclined-plane

Form the friction welding inclined-plane on the bearing surface in two bearing surfaces of first bearing surface at first position of golf clubs and second position, second bearing surface;

Against the friction welding inclined-plane

The friction welding inclined-plane that is convexly set on the bearing surface is resisted against on another bearing surface;

Rotate first and second bearing surface

First and second bearing surface on first position and second position is relatively rotated along same axle center,, form welded joint to carry out friction welding;

Surface treatment

Carry out Surface Machining handles in the welding position of first and second bearing surface.

11, golf clubs friction welding method according to claim 10 is characterized in that the friction welding inclined-plane is taper seat or pyramidal surface in the described formation friction welding inclined-plane step; Or constitute by ring raised body and recess; Or constitute by ring raised body, circular rabbet and central spud; The drift angle on friction welding inclined-plane that is taper seat or pyramidal surface is between 90 ° to 180 °; The angle at ring raised body, recess, circular rabbet and central spud two-end-point point of intersection of tangents place is between 90 ° to 180 °.

12, golf clubs friction welding method according to claim 10 is characterized in that first bearing surface at first position in the described formation friction welding inclined-plane step and the bearing surface at second position are formed at respectively on rod head noumenon elongated end and the cover neck.

13, golf clubs friction welding method according to claim 10, the bearing surface that it is characterized in that first bearing surface at first position in the described formation friction welding inclined-plane step and second position are formed in the rod head noumenon room respectively and on the balancing weight.

14,, it is characterized in that the periphery of contiguous first bearing surface of elongated end of rod head noumenon in the described formation friction welding inclined-plane step is arranged with annular groove according to claim 10 or 12 described golf clubs friction welding methods.

15,, it is characterized in that in the described formation friction welding inclined-plane step that neck puts the second bearing surface periphery and forms for rod head noumenon first bearing surface and be easy to precisely being positioned at the ring flange of second bearing surface according to claim 10 or 12 described golf clubs friction welding methods.

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