JP2018029760A - Method for manufacturing iron golf club head by heterogeneous metal bonding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an iron golf club head by heterogeneous metal bonding.SOLUTION: A method for manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention includes: a step of preparing a head body composed of a pre-shaped metal material; a step of preparing a face semifinished product composed of a pre-shaped metal material; a fitting step of fitting the face semifinished product in a fitting recess so as to project from a front side face of the head body; a preheating step of preheating the face semifinished product and the head body to a set forging temperature; and a step of forging the preheated face semifinished product and head body. In the forging step, when the preheated face semifinished product and head body are put in a forging die and the face semifinished product is pressed by forge processing, the face member is formed into a desired shape, and the face member and the head body are integrated so as to be closely fitted to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a golf equipment, and more particularly to a method for manufacturing an iron golf club head by heterogeneous metal bonding.

  Conventional golf club heads are made of a kind of steel and are manufactured by precision casting or forging means. Since the striking characteristics are related to the material, the mere kind of material cannot exert the desired striking characteristics when striking. Therefore, in order to improve the striking characteristics of the conventional golf club head, the foreign metal joining means Developed technology to manufacture iron heads using

  As shown in FIGS. 6 and 7, an existing iron golf club head manufacturing method includes forming a head semi-finished product 30 by casting means, forming a fitting recess 31 in the head semi-finished product 30, and then fitting the head semi-finished product 30. A convex edge 32 is provided on the periphery of the recess 31, and a face member 40 is formed by pressing, and an annular recess 41 is provided on the periphery of the face member 40. When they are assembled with each other, the face member 40 is fitted into the fitting recess 31 of the head semi-finished product 30 and subjected to press working such as a hydraulic press, and the convex edge portion 32 of the fitting recess 31 of the head semi-finished product 30 is moved to the face member 40. If the head semi-finished product 30 is combined with the face member 40 by biting into the annular recess 41, a desired face member 30A can be completed.

Taiwan Patent No. I224020

  However, in an existing method for manufacturing an iron golf club head, by performing a pressing process such as a hydraulic press, the convex edge portion 32 of the fitting concave portion 31 is bent inward so as to bite into the annular concave portion 41 of the face member 40. As a result, a gap is generated between the face member 30A and the face member 40, resulting in insufficient coupling strength. In other words, if the existing golf club is used many times over a long period of time, the face member 40 may drop off, and there is a gap between the face member 30A and the face member 40. There was a sound.

  The method of manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention includes a head portion and a hosel, a fitting recess is formed in the front side surface of the head portion, and one or more peripheral walls of the fitting recess are provided. A step of preparing a head body made of a pre-formed metal material in which a biting recess is provided and the hosel is provided on one side of the head portion; and a fitting recess in the head body that is different from the material of the head body. A face semi-finished product made of a pre-formed metal material, the face semi-finished product having a thickness greater than the depth of the fitting recess, A forging temperature of 500 ° C. to 1200 ° C. is set according to the fitting step of fitting into the fitting recess so as to protrude from the front side surface of the main body and the material of the face semi-finished product. A preheating step for preheating the semifinished product and the head body to a set forging temperature, and forging the preheated face semifinished product and head body to extrude the convex edge from the peripheral edge of the face semifinished product. The face semi-finished product and the head main body are integrated into the biting recess of the fitting concave portion of the main body to form a face member, and the pre-heated face semi-finished product and head main body are made into a forging die during the forging process. Then, when the face semi-finished product is pressed by forging, the face member has a desired shape and is integrated so that the face member and the head main body are in close contact with each other. Extruding from the peripheral edge of the face member, the convex edge is bitten into the biting recess of the fitting recess of the head body, and the front side of the face member is the head body A front side surface and a flat shape, and has a step of forging the preheated face blank and the head body.

  Regarding the method of manufacturing an iron golf club head by such heterogeneous metal joining, in the step of preparing a head body made of a preformed metal material, the head body is pre-formed by casting or forging, and can be cast or forged SUS304. SUS303, SUS17-4, SUS431, SUS15-5 stainless steel, castable or forgeable 1020C, 1025C, 1035C, 1045 carbon steel, castable or forgeable 4140, 4130, 4340 In the step of preparing a face semi-finished product made of any one of alloy steel, titanium, aluminum bronze, and manganese bronze and made of the pre-formed metal material, the face semi-finished product is press-worked or forged. Formed by It is preferably composed of any one of titanium alloy, aluminum alloy, copper, copper alloy, stainless steel, and carbon steel.

  In the method of manufacturing an iron golf club head by such heterogeneous metal bonding, in the step of preparing the head body made of the pre-formed metal material, four peripheral walls are formed in the fitting recesses of the head part in the head body, An inclined biting recess is formed in each of the two peripheral walls, and the inclined biting recess is provided so as to be inclined obliquely toward the outer peripheral edge from the front side surface to the rear side surface of the head portion. In the peripheral wall, a straight wall portion is formed between the front side surface of the head body and the front side edge of the inclined biting recess, and the face semi-finished product fitted in the fitting recess is formed from the front side surface of the head body. It is preferable to protrude about 0.1 mm to 3.0 mm.

  In the method for manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention, one or a plurality of biting recesses are formed in the fitting recess of the pre-formed head body, and the shape of the pre-formed face semi-finished product is that of the head body. Corresponds to the shape of the mating recess, and the thickness of the face semi-product is thicker than the depth of the mating recess, so when the face semi-product is fitted in the mating recess of the head body The face semi-finished product is fitted into the fitting recess so as to protrude from the front side surface of the head main body, whereby the face semi-finished product forms a face member integrated with the head main body by forging means. At this time, the face semi-finished product The golf club head is completed by extruding from the outer periphery of the face member using the part protruding from the head body as a surplus material and then biting into the recess in the fitting recess in the head body That.

  According to this configuration, there is no gap between the face member and the head main body, and the face member and the head main body are integrated so that the face member and the head main body are in close contact with each other. The bonding strength can be improved, the impact feeling is excellent, and no abnormal noise is generated.

It is a flowchart of this invention. It is a plane explanatory view of the head body of the present invention. It is sectional explanatory drawing of the head main body of this invention. FIG. 6 is a cross-sectional explanatory view showing a state in which the face semi-product of the present invention is fitted in the fitting recess of the head body. Cross-sectional explanatory drawing which shows the state with which the face member was united with the head main body by pushing the convex edge part which extruded the semifinished face product of this invention from the periphery by the forging process in the biting recessed part of the fitting recessed part of a head main body. It is. In the existing iron golf club head manufacturing method, the face member is a cross-sectional explanatory view showing a state in which the face member is fitted in the fitting recess of the head semi-finished product. FIG. 10 is a cross-sectional explanatory view showing a state in which the convex edge portion of the fitting concave portion of the semifinished head product is pushed into the annular concave portion of the face member in the existing method for manufacturing an iron golf club head.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the accompanying drawings.
The method of manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention includes the following steps as shown in FIGS.

  A step of preparing a preformed metal head body. As shown in FIGS. 2 and 3, it has a head portion 11 and a hosel 12, of which a fitting recess 13 is formed in the front side surface of the head portion 11, and one or more are provided on the peripheral wall of the fitting recess 13. The hosel 12 is provided with a head main body 10 provided on one side of the head portion 11.

  Preparing a pre-formed metal face semi-finished product 20; As shown in FIG. 4, a face semi-finished product 20 is prepared which is different from the material of the head body 10 and whose shape corresponds to the shape of the fitting recess 13 of the head body 10 and whose thickness is thicker than the depth of the fitting recess 13. To do.

  A step of fitting the face semi-finished product 20 into the fitting recess 13 of the head body 10; As shown in FIG. 4, the face semi-finished product 20 is fitted into the fitting recess 13 so as to protrude from the front side surface of the head body 10. In the present embodiment, the face semi-finished product 20 is preferably protruded from the front side surface of the head body 10 by about 0.1 mm to 3.0 mm.

  Preheating the face semi-finished product 20 and the head body 10 to a forging temperature; The forging temperature is set according to the material of the face semi-finished product 20, and the face semi-finished product 20 and the head body 10 are preheated to the set forging temperature. The forging temperature is always set between 500 ° C and 1200 ° C.

Forging the preheated face semi-finished product 20 and the head body 10; When forging the pre-heated face semi-finished product 20 and the head main body 10, the face semi-finished product 20 is forged so that the convex edge 21 is pushed out from the peripheral edge of the face semi-finished product 20 and the fitting recess 13 of the head main body 10 is A face member 20A in which the semi-finished face product 20 and the head main body 10 are integrated is formed by biting into the dent recess 14, and an integrated golf club head is completed.
As shown in FIGS. 4 and 5, in this step, the preheated face semi-finished product 20 and the head body 10 are combined and then put into a forging die (not shown), and the face semi-finished product 20 is pressed by forging. The face member 20 </ b> A is brought into close contact with the fitting recess 13 of the head body 10. During the forging process, the forging pressure and temperature are appropriately set according to the material of the face semi-finished product 20.
When the face semi-finished product 20 is pressed by applying a pressure to an appropriate temperature by forging, the face member 20A has a desired shape, and the face member 20A and the head body 10 are integrated so as to be in close contact with each other. At this time, the convex edge 21 is further extruded from the peripheral edge of the face member 20A by forging, and the convex edge 21 is formed so that the front side surface of the face member 20A is flat with the front side surface of the head body 10. The head main body 10 is pushed out into the biting recess 14 of the fitting recess 13.

In the step of preparing the preformed metal head body, the head body 10 is preformed by casting or forging, and at this time, castable or forgeable stainless steel, castable or forgeable. It is composed of any one of colored alloys such as carbon steel, castable or forgeable alloy steel, titanium, aluminum bronze, manganese bronze. Among them, castable or forgeable stainless steel is any stainless steel such as SUS304, SUS303, SUS17-4, SUS431, or SUS15-5 of Japanese Industrial Standards (JIS), which can be cast or The alloy that can be forged is any carbon steel of 1020C, 1025C, 1035C, and 1045 of Japanese Industrial Standard (JIS), or any alloy steel of 4140, 4130, and 4340.
Furthermore, when the head body 10 is cast with a mold, one or a plurality of biting recesses 14 are formed on the peripheral wall of the fitting recess 13 of the head body 10 by the casting mold. On the other hand, when the head body 10 is forged with a die, the head body 10 is constituted by the forging die, but one or a plurality of biting depressions 14 are formed by machining on the peripheral wall of the fitting recess 13. To do.

  In the step of preparing the pre-molded metal head body, four peripheral walls are formed in the fitting concave portion 13 of the head portion 11 in the head main body 10, and inclined biting concave portions 14 are respectively formed on the four peripheral walls. The inclined biting recess 14 is formed so as to be gradually inclined toward the outer peripheral edge from the front side surface to the rear side surface of the head portion 11 in the head body 10. Further, a linear wall portion is formed between the front side surface of the head main body 10 and the front side edge of the inclined biting recess 14 in the peripheral wall of the fitting recess 13. In addition, it is preferable to form a through-hole penetrating the head portion 11 in the fitting recess 13 of the head body 10.

  In the step of preparing the pre-formed metal face semi-finished product 20, the face member 20 </ b> A made of the face semi-finished product 20 formed by pressing or forging a plate material is made of a titanium alloy different from the material of the head body 10. Or an alloy such as aluminum alloy, copper, copper alloy, stainless steel, and carbon steel.

  After manufacturing the golf club head using the method for manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention, it is necessary to perform surface treatment again. Then, when the shaft is attached to the hosel 12 of the head body 10, the golf club is completed.

  In the method for manufacturing an iron golf club head by heterogeneous metal bonding according to the present invention, one or a plurality of biting recesses 14 are formed in the fitting recess 13 of the preformed head body 10, and the preformed face semi-product 20 is formed. Since the shape corresponds to the shape of the fitting recess 13 of the head main body 10 and the thickness of the face semi-finished product 20 is thicker than the depth of the fitting recess 13, the face semi-finished product 20 is made to be the head main body 10. The face semi-finished product 20 is fitted into the fitting recess 13 so as to protrude from the front side surface of the head body 10. Further, the face semi-finished product 20 constitutes a face member 20A that is integrated with the head main body 10 by forging means. At this time, a portion protruding from the head main body 10 of the face semi-finished product 20 is used as a surplus material from the outer peripheral edge of the face member 20A. The golf club head is completed when it is pushed into the biting recess 14 of the fitting recess 13 of the head body 10.

  According to this configuration, there is no gap between the face member 20A and the head main body 10, and the face member 20A and the head main body 10 are integrated so as to be in close contact with each other. Therefore, the bonding strength can be improved, and when hitting using the face member 20A, the hit feeling is excellent and no abnormal noise is generated.

DESCRIPTION OF SYMBOLS 10 Head main body 11 Head part 12 Hosel 13 Fitting recessed part 14 Eating recessed part 20 Face semi-finished product 20A Face member 30 Head semi-finished product 30A Face member 31 Fitting recessed part 32 Convex edge part 40 Face member

Claims (3)

A head portion and a hosel, and a fitting recess is formed in the front side surface of the head portion, and one or a plurality of biting recesses are provided in a peripheral wall of the fitting recess, and the hosel is formed on one side of the head portion. Providing a pre-formed head body made of a pre-formed metal material;
It is different from the material of the head body, and includes a face semi-product corresponding to the shape of the fitting recess of the head body, and the thickness of the face semi-product is thicker than the depth of the fitting recess. Preparing a semi-finished face product,
A fitting step of fitting the semifinished face product into a fitting recess so as to protrude from the front side surface of the head body;
A preheating step of setting a forging temperature of 500 ° C. to 1200 ° C. according to the material of the face semi-finished product, and preheating the face semi-finished product and the head body to the set forging temperature;
By forging the pre-heated face semi-finished product and the head body, the convex edge portion is pushed out from the peripheral edge of the face semi-finished product so as to bite into the biting recess of the fitting concave portion of the head body. When the face semi-finished product and the head main body are put into a forging die and the face semi-finished product is pressed by forging during the forging process, the face member is In addition, the face member and the head body are integrated so as to be in close contact with each other, and the convex edge portion is extruded from the peripheral edge of the face member by the forging process, and the convex edge portion is inserted into the fitting concave portion of the head main body. Forging the pre-heated face semi-finished product and the head body in which the front side surface of the face member is flat with the front side surface of the head body. And having a step,
A method of manufacturing an iron golf club head by heterogeneous metal bonding.   In the step of preparing the head body made of the pre-formed metal material, the head body is pre-formed by casting or forging, and can be casted or forged from any of SUS304, SUS303, SUS17-4, SUS431, and SUS15-5. Stainless steel, castable or forgeable carbon steel of 1020C, 1025C, 1035C, 1045, castable or forgeable alloy steel of any of 4140, 4130, 4340, titanium, aluminum bronze, manganese bronze In the step of preparing a face semi-finished product made of a pre-formed metal material, the face semi-finished product is formed by pressing or forging a plate material, titanium alloy, aluminum alloy, copper, From copper alloy, stainless steel, or carbon steel The method of manufacturing an iron golf club head by heterogeneous metal bonding according to claim 1, wherein the iron golf club head is formed.   In the step of preparing the head main body made of the pre-formed metal material, four peripheral walls are formed in the fitting concave portion of the head portion in the head main body, and an inclined biting concave portion is formed in each of the four peripheral walls, The inclined dent recess is obliquely recessed toward the outer peripheral edge from the front side surface to the rear side surface of the head portion, and the front side surface of the head body and the inclined dent recess portion on the peripheral wall of the fitting recess A straight wall portion is formed between the front side edge and the face semi-finished product fitted in the fitting recess protrudes from the front side surface of the head body by about 0.1 mm to 3.0 mm. A method of manufacturing an iron golf club head by heterogeneous metal bonding according to claim 1 or 2.

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