CN1213780C - Joining method of golf club head - Google Patents

Abstract

A method for joining a golf club head comprises the following steps: firstly preparing a first main part, a second main part and a frame ring part made of metal materials, wherein the shapes of the first main part and the second main part cooperate with each other to roughly form a club head shape, and the two are made of different metal materials, and the shape of the frame ring part corresponds to the outer edge contour of the first main part on one side of the second main part, and its material is the same as that of the second main part; then heating the frame ring part to make it expand slightly, and in the expanded state, it is looped around the aforementioned outer edge portion of the first main part, and after cooling and shrinking, it is tightened and bound to join with the first main part; then the second main part is placed against the first main part, and the annular joint portion between the second main part and the frame ring part is welded to join, so as to join into a golf club head.

Description

Joining method of golf club head

technical field

The present invention is related to the manufacturing method of the golf club head, in particular to a method for joining metal components of different materials into a golf club head.

Background technique

At present, most of the golf club heads are joined by two or three pieces of metal components. The common type is like joining a ball hitting panel to the front side of a club head body, or joining together two or three pieces of shell-shaped components. A hollow club head, etc., in addition to the reasonable method of manufacturing and molding, the biggest advantage should be that different parts of the club head can have different physical properties (such as stronger body rigidity, better elasticity of the hitting panel, or heavier bottom and lighter top. etc.), based on this, the general golf club head is mostly made of different metal materials, and generally speaking, the joining method is almost all welding methods such as general welding or brazing (brazing), but the welding method is used to join When different metal components are used, due to the differences in the melting point, condensation rate, and crystal phase structure of the metals, the joint strength between the components is actually not high, and they will still be cracked and separated after multiple hits.

Contents of the invention

The object of the present invention is to provide a golf club head joining method, which can combine metal components of different materials into a club head, and the joint strength is better.

In order to achieve the above object, the present invention provides a method for joining golf club heads. First, prepare a first main part, a second main part and a frame ring part made of metal, wherein the first main part and the second main part The shapes of the two main parts cooperate with each other to roughly form a rod head shape, and the two are made of different metal materials, and the shape of the frame ring part corresponds to the outer edge contour of the side of the first main part matching the second main part, And its material is the same as that of the second main part; afterward, the frame ring part is heated to make it expand slightly, and in the expanded state, it surrounds the aforementioned outer edge of the first main part, and after cooling and contracting, it is fastened and bundled. The first main part is joined with it; then the second main part is attached to the first main part, and the annular joint part between the second main part and the frame ring part is joined by welding, so that the joint is formed A golf club head.

Wherein the shape of the first main part corresponds to the rear main part of the rod head, and its front outer edge has an annular groove; the shape of the frame ring part corresponds to the annular groove, and fits the The groove is joined to the outer edge of the front side of the first main part after cooling and shrinking; the second main part has a plate part for hitting a ball, and its outer contour corresponds to the frame part, and the back side edge Welded with the frame ring.

Wherein the first main part has a plate part for hitting the ball, and the outer edge of the back of the plate part is provided with an annular groove; the shape of the frame ring part corresponds to the annular groove, and fits in the expanded state The groove is joined to the outer edge of the back of the first main part after cooling and shrinking; the shape of the second main part corresponds to the rear main part of the rod head, and the front edge is welded to the frame ring part.

Wherein the shape of the first main part corresponds to the bottom of the golf wood club head, which is in the shape of a shell, and has a groove extending along the edge on the surface; Fit the groove, and after cooling and shrinking, the ring beam is bonded to the surface edge of the first main part; the second main part is also in the shape of a shell, and its shape corresponds to the top, neck and ball hitting of the wood club head. The panel is welded to the frame member by its edge.

Wherein the inner peripheral surface of the frame ring part and the outer peripheral surface of the first main part to be restrained are in the form of inclined surfaces that engage with each other.

Description of drawings

The present invention will be further described below with accompanying drawing and in conjunction with several preferred embodiments, wherein:

Fig. 1 is the first step of the first preferred embodiment of the present invention, schematically prepares a first main part, a second main part and a frame circle part;

Fig. 2 is the second step of the first preferred embodiment of the present invention, which schematically shows that the first main part is encircled after the frame part in Fig. 1 is heated and expanded;

Fig. 3 is the third step of the first preferred embodiment of the present invention, in the schematic diagram 2, the first main part is tightened after the frame part is cooled and shrunk;

Fig. 4 is the fourth step of the first preferred embodiment of the present invention, which schematically shows that the second main part in Fig. 3 is welded to the frame ring part on the first main part to form an iron club head;

Fig. 5 to Fig. 8 correspond to Fig. 1 to Fig. 4, respectively the first to the fourth steps of the second preferred embodiment of the present invention;

Fig. 9 is the first step of the third preferred embodiment of the present invention, schematically preparing a first main part, a second main part and a frame circle part;

Fig. 10 is a diagram showing that the frame ring part in Fig. 9 is bound to the first main part by thermal expansion and contraction; and

Fig. 11 is a schematic diagram of welding the second main part in Fig. 10 with the frame ring part on the first main part to form a wooden club head.

Detailed ways

Please refer to Fig. 1 to Fig. 4 in sequence, the joining method of the golf club head provided by the first preferred embodiment of the present invention is as follows:

As shown in Figure 1, a first main part (10), a second main part (20) and a frame ring part (30) are prefabricated by casting or forging, wherein the first main part (10) The material is stainless steel, the shape corresponds to the rear main part of the golf iron club head, a hollow (11) is recessed from the center of the front to the back (note: depending on the design, there may be no hollow or no penetration), and There is an annular groove (12) on the outer edge of the front side, and the front and rear side walls (13) of the groove (12) are inclined slightly outward (about 3°); the frame (30) The material is titanium alloy, the shape corresponds to the annular groove (12) of the first main part (10), and the inner peripheral surface also presents a slope corresponding to the side wall (13) of the groove (12), which is fine In terms of size, the inner edge of the frame part (30) is slightly smaller than the annular groove (12), so under normal conditions, the frame part (30) cannot fit in the groove (12); the The material of the second main part (20) is also titanium alloy, and the shape is the part of the batting panel on the front side of the club head, which has a plate part (21) for hitting the ball, and the part of the plate part (21) The outer contour corresponds to the frame member (30), the back has a protruding ring (22) extending along the periphery, and the rear edge of the protruding ring (21) has an annular pre-set groove (23).

As shown in Figure 2, the frame ring part (30) is heated to a predetermined high temperature, so that it expands slightly due to heat, and then fits the annular groove of the first main part (10) in the expanded state ( 12) Inside, the ring is set on the front side of the first main part (10).

As shown in Figure 3, after the frame member (30) is naturally cooled (or cooled by external force) back to normal temperature, the volume also shrinks to the original size, which will tighten the first main member (10), that is, an interference fit (interferance fit) is firmly joined to the outer edge of the front side of the first main part (10); in this embodiment, the inner peripheral surface of the frame ring part (30) and the side wall (13) of the groove (12) form a mutual hook In order to make the joint between the frame ring part (30) and the first main part (10) more firm, if the size is made accurately, even if the abutting surface is not made into a slope, after the aforementioned procedures, the two (30) ( 10) Still able to securely join.

As shown in Figure 4, finally, the second main part (20) is abutted to the front side of the first main part (10), so that the rear side edge surface of the protruding ring (21) of the second main part (20) Abut against the front end surface of the frame ring part (30), and then combine the second main part (20) and the frame ring part (30), which are also titanium metal, by welding. In this embodiment, brazing ) technology: first pre-preset creamy hard solder (brazing solders) in the preset groove (23) on the rear side of the second main part (20), and fix the relative relationship between the two main parts (20) (10) with jigs Then send it into a high-temperature furnace for heating (note: the heating temperature is lower than the temperature at which the frame ring part (30) was expanded previously), so that the solder is heated and melted to infiltrate the gap, and after cooling, the second main part (20) and the second main part (20) are welded. The ring-shaped joint surface between the frame ring parts (30); perhaps, a circle can be welded along the seam between the two (20) (30) on the surface of the club head, and then the surface is smoothed afterwards; of course, It can also be brazed first and then generally welded; in this way, the second main part (20) (ball striking panel) is welded to the frame ring part (30) on the front side of the first main part (10) (head main body). ) afterwards, promptly form an iron club head, and its main body is the stronger stainless steel of rigidity, and the hitting surface plate is the better titanium alloy of flexibility.

In short, the technical feature of the present invention is to firstly prepare two main parts that can be roughly assembled into the shape of the club head. The two main parts are made of different metal materials so that different parts of the club head have different physical properties; The outer edge of the joint part, using the principle of thermal expansion and contraction, joins a frame member of the same material as the second main part (that is, interference fit), and then welds the second main part to the frame part on the first main part, joined to form a golf club head. Since the interference fit is a negative fit, the effect is not affected by different materials and has extremely high joint strength; and the final welding operation is to weld metals with the same material, so the operation is relatively simple and the joint strength is strong .

Based on the same technical idea, the present invention can also be shown in Fig. 5 to Fig. 8, prefabricated a first main part (40) of titanium alloy in the shape of the batting face plate, a second main part of stainless steel in the shape of the main body of the club head (50), and a stainless steel frame member (60) (Fig. 5), the back of the plate part (51) of the first main part (40) has a protruding ring (42) adjacent to the outer edge and extending along the edge ), as forming an annular groove (43) at the outer edge of the back, the shape of the frame (60) corresponds to the groove (43); afterward, the frame (60) is thermally expanded and its Fit the groove (43) (Fig. 6), make it cool and shrink, and fasten it to the back side of the first main part (40) (Fig. 7), and finally attach the second main part (50) to the first main part (50). The frame ring part (60) on the outer edge of the main part (40) is welded, so that the three (40) (50) (60) are firmly joined into an iron club head (Fig. 8).

Of course, the joining method provided by the present invention can also be applied to other types of golf club heads such as wood club heads, and the present invention is not limited to joining the front and rear opposite club head bodies and ball striking panels. Please refer to FIG. 9 again, the present invention The third preferred embodiment provides a method for assembling a hollow wooden club head, also prefabricating a first main part (70), a second main part (80) and a frame ring part (90) made of metal, Both the first main part (70) and the second main part (80) are shell-shaped, the former (70) corresponds to the bottom of the wood club head, and the latter (80) includes the top (81) of the club head , the head (82) and the ball striking panel (83), etc., the two (70) (80) can be roughly assembled into the shape of a wooden club head, wherein the second main part (80) on the top It is made of stainless steel casting or forging, and the first main part (70) below is integrally formed by powder metallurgy technology with copper-tungsten alloy, and its specific gravity is higher than that of the second main part (80); the frame part ( 90) is also made of stainless steel, and its shape presents a curved ring frame corresponding to the edge of the first main part (70). Similarly, it is heated and expanded and fitted to the surface of the first main part (70) along the edge The extended groove (71), after cooling and shrinking, the ring bundle is joined to the surface side edge of the first main part (70) (Figure 10), and then the second main part (80) is covered with the first main part (70 ), and weld the annular joint between it and the frame (90) to form a wooden club head with a low center of gravity, as shown in Figure 11.

To sum up, the method for joining metal components of different materials into a golf club head provided by the present invention has stronger joining strength than the common joining method (ie directly welding different metal materials).

Claims (5)

1. A method for joining a golf club head. First prepare a first main part, a second main part and a frame ring part made of metal, wherein the shapes of the first main part and the second main part match each other It can be roughly assembled into a rod head shape, and the two are made of different metal materials, and the shape of the frame ring part corresponds to the outer edge contour of the side of the first main part matching the second main part, and its material is the same as that of the first main part. Two main parts; then heat the frame ring part to make it expand slightly, and surround the aforementioned outer edge of the first main part under the expanded state, and after cooling and shrinking, fasten and bundle the first main part to be connected with it Joining; then the second main part is attached to the first main part, and the ring-shaped joint part between the second main part and the frame ring part is combined by welding, so as to form a golf club head. 2. The method for joining golf club heads according to claim 1, wherein the shape of the first main part corresponds to the rear body part of the club head, and an annular groove is formed on the outer edge of the front side; The shape of the frame part corresponds to the annular groove, fits the groove in the expanded state, and is joined to the outer edge of the front side of the first main part after cooling and shrinking; the second main part has a The plate part, whose outer contour corresponds to the frame ring part, is welded to the frame ring part with the back side edge. 3. The method for joining golf club heads according to claim 1, wherein the first main part has a plate portion for hitting a ball, and an annular groove is provided on the outer edge of the back surface of the plate portion The shape of the frame ring part corresponds to the annular groove, fits the groove in the expanded state, and is joined to the outer edge of the back of the first main part after cooling and shrinking; the shape of the second main part corresponds to the rod head The rear main body part of the front side edge is welded with the frame ring piece. 4. The method for joining golf club heads according to claim 1, wherein the shape of the first main part corresponds to the bottom of the golf wood club head, and is in the shape of a shell, with a surface extending along the edge the groove; the shape of the frame ring part corresponds to the groove, fits the groove in the expanded state, and is bonded to the side edge of the first main part after cooling and shrinking; the second main part is also It is shell-shaped, and its shape corresponds to the top, neck and ball-hitting faceplate of the wooden club head, and its edge is welded with the frame ring. 5 . The method for joining golf club heads according to claim 1 , wherein the inner peripheral surface of the frame member and the outer peripheral surface of the first main member at the constrained joint form an inclined surface that engages with each other. 6 .

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